Mayfield V

Mayfield V, established in 1969, is a global venture capital firm based in Menlo Park, California, with over $2.5 billion under management. The firm specializes in early-stage investments, focusing on technology companies in the enterprise and consumer sectors. Mayfield V seeks to partner with founders from inception, providing extensive experience and resources to build impactful companies. It invests in a broad range of technology subsectors, including artificial intelligence, semiconductors, and human & planetary health, with a typical investment size between $1 and $15 million. The firm also participates in follow-on financing rounds and assists in finding co-investors. Mayfield V has a strong track record, having invested in over 500 companies resulting in 117 IPOs and more than 200 mergers or acquisitions.

Rajeev Batra

Partner

Tim Chang

Venture Partner

Vikram Godse

Partner and Managing Director, India

Nikhil Khattau

Managing Director

Paul Kohli

Vice President of Investment Operations

Tejas Maniar

Operating Partner

Guru Pangal

Venture Partner

Sri Pangulur

Partner

Zareer Shroff

Principal

Vaneeta Varma

CFO

Past deals in Telecommunications

Retym

Series D in 2025
Retym is a semiconductor startup focused on developing innovative technologies for the data center and telecommunications sectors. The company brings together a team of experienced ASIC designers and optical communications specialists to create semiconductor solutions that enhance optical networking and digital signal processing capabilities. By prioritizing the identification and development of disruptive technologies, Retym aims to empower businesses with advanced tools for deep learning and artificial intelligence. Through its efforts, the company seeks to facilitate the construction of next-generation data centers, positioning itself as a key player in the evolution of these critical industries.

Sawmills

Seed Round in 2025
Sawmills is a technology company that specializes in AI-driven telemetry data management. Its platform, designed for enterprises, processes and monitors data from engineering teams, enhancing reliability and quality. By identifying cost reduction opportunities and improving critical monitoring capabilities, Sawmills helps businesses manage their telemetry data efficiently and securely.

Sawmills

Seed Round in 2024
Sawmills is a technology company that specializes in AI-driven telemetry data management. Its platform, designed for enterprises, processes and monitors data from engineering teams, enhancing reliability and quality. By identifying cost reduction opportunities and improving critical monitoring capabilities, Sawmills helps businesses manage their telemetry data efficiently and securely.

Knowlarity

Series C in 2016
Knowlarity is a leading provider of cloud-based business communication solutions. It offers a range of services, including virtual phone numbers, interactive voice response (IVR) systems, toll-free numbers, and call center software. The company also specializes in AI-driven products such as speech recognition, chatbots, and voicebots, along with video and messaging solutions. Knowlarity's platforms enable businesses to streamline communication processes, enhance customer interactions, and improve overall operational efficiency.

MIPS

Venture Round in 2016
MIPS Technologies, Inc. specializes in developing compute processors and related intellectual property (IP) that cater to AI-driven markets, including automotive, data centers, and both wired and wireless communications. The company focuses on RISC-V instruction set architectures (ISA), offering designs that are applicable to various sectors through licensing agreements with semiconductor firms and original equipment manufacturers. MIPS provides a range of embedded processors that can be tailored for standard, custom, semi-custom, and application-specific products, facilitating the creation of advanced deep learning applications. Its solutions enhance performance and power efficiency, enabling clients to meet stringent requirements and distinguish their products in competitive markets. MIPS operates sales offices in California, Japan, and Israel, supporting its global reach and client base.

Netsil

Seed Round in 2015
Netsil Inc. specializes in monitoring solutions for distributed cloud applications. Founded in 2012 and based in San Francisco, the company offers an observability platform that enables DevOps teams to ensure application uptime and performance. Its innovative Application Operations Center (AOC) automatically maps the entire application ecosystem, discovering both internal and external services while capturing their dependencies. This tool provides real-time metrics on service health, allowing Site Reliability Engineers (SREs) and DevOps professionals to gain comprehensive visibility into critical services. By leveraging a content-driven analytics engine, Netsil’s solution derives insights from API calls without the need for code modifications, facilitating quick deployment and troubleshooting of performance issues. As of 2018, Netsil operates as a subsidiary of Nutanix, Inc.

ServiceMax

Series F in 2015
ServiceMax, Inc. is a leading provider of cloud-based field service software solutions, specializing in Service Execution Management, which encompasses both Field Service Management and Asset Service Management. Founded in 1999 and headquartered in Pleasanton, California, with additional offices across the globe, ServiceMax offers a comprehensive platform designed to enhance the productivity of equipment-centric service operations for various sectors, including life sciences, industrial manufacturing, oil and gas, telecommunications, and more. The company's offerings include advanced features such as work order management, scheduling and dispatch, inventory and contract management, and analytics, all aimed at improving efficiency and customer service. ServiceMax also provides tailored solutions like ServiceMax Linx for automated scheduling and workforce optimization, as well as ServicePulse for enhanced collaboration. By leveraging its cloud-based technology, ServiceMax enables enterprises to optimize their service processes, increase revenue, and ensure compliance while delivering superior customer experiences.

Knowlarity

Series B in 2014
Knowlarity is a leading provider of cloud-based business communication solutions. It offers a range of services, including virtual phone numbers, interactive voice response (IVR) systems, toll-free numbers, and call center software. The company also specializes in AI-driven products such as speech recognition, chatbots, and voicebots, along with video and messaging solutions. Knowlarity's platforms enable businesses to streamline communication processes, enhance customer interactions, and improve overall operational efficiency.

ServiceMax

Series E in 2014
ServiceMax, Inc. is a leading provider of cloud-based field service software solutions, specializing in Service Execution Management, which encompasses both Field Service Management and Asset Service Management. Founded in 1999 and headquartered in Pleasanton, California, with additional offices across the globe, ServiceMax offers a comprehensive platform designed to enhance the productivity of equipment-centric service operations for various sectors, including life sciences, industrial manufacturing, oil and gas, telecommunications, and more. The company's offerings include advanced features such as work order management, scheduling and dispatch, inventory and contract management, and analytics, all aimed at improving efficiency and customer service. ServiceMax also provides tailored solutions like ServiceMax Linx for automated scheduling and workforce optimization, as well as ServicePulse for enhanced collaboration. By leveraging its cloud-based technology, ServiceMax enables enterprises to optimize their service processes, increase revenue, and ensure compliance while delivering superior customer experiences.

ServiceMax

Series D in 2012
ServiceMax, Inc. is a leading provider of cloud-based field service software solutions, specializing in Service Execution Management, which encompasses both Field Service Management and Asset Service Management. Founded in 1999 and headquartered in Pleasanton, California, with additional offices across the globe, ServiceMax offers a comprehensive platform designed to enhance the productivity of equipment-centric service operations for various sectors, including life sciences, industrial manufacturing, oil and gas, telecommunications, and more. The company's offerings include advanced features such as work order management, scheduling and dispatch, inventory and contract management, and analytics, all aimed at improving efficiency and customer service. ServiceMax also provides tailored solutions like ServiceMax Linx for automated scheduling and workforce optimization, as well as ServicePulse for enhanced collaboration. By leveraging its cloud-based technology, ServiceMax enables enterprises to optimize their service processes, increase revenue, and ensure compliance while delivering superior customer experiences.

Zenprise

Series E in 2011
Zenprise is a leading provider of secure mobile device management solutions, founded in 2003 and headquartered in Redwood City, California. The company specializes in protecting all layers of the mobile enterprise, ensuring organizations remain secure and compliant while embracing mobile device choice. Zenprise offers its solution via on-premise, public cloud, or hybrid cloud deployments, safeguarding sensitive corporate data, shielding networks from mobile threats, and maintaining regulatory compliance. With a diverse global customer base spanning various industries such as aerospace, finance, healthcare, and government, Zenprise empowers IT departments to say "yes" to employee device preferences while preserving security and compliance. The company's executive team brings extensive enterprise software experience from companies like Mercury, EDS, Symantec, and McAfee.

ServiceMax

Series C in 2011
ServiceMax, Inc. is a leading provider of cloud-based field service software solutions, specializing in Service Execution Management, which encompasses both Field Service Management and Asset Service Management. Founded in 1999 and headquartered in Pleasanton, California, with additional offices across the globe, ServiceMax offers a comprehensive platform designed to enhance the productivity of equipment-centric service operations for various sectors, including life sciences, industrial manufacturing, oil and gas, telecommunications, and more. The company's offerings include advanced features such as work order management, scheduling and dispatch, inventory and contract management, and analytics, all aimed at improving efficiency and customer service. ServiceMax also provides tailored solutions like ServiceMax Linx for automated scheduling and workforce optimization, as well as ServicePulse for enhanced collaboration. By leveraging its cloud-based technology, ServiceMax enables enterprises to optimize their service processes, increase revenue, and ensure compliance while delivering superior customer experiences.

Zenprise

Series D in 2010
Zenprise is a leading provider of secure mobile device management solutions, founded in 2003 and headquartered in Redwood City, California. The company specializes in protecting all layers of the mobile enterprise, ensuring organizations remain secure and compliant while embracing mobile device choice. Zenprise offers its solution via on-premise, public cloud, or hybrid cloud deployments, safeguarding sensitive corporate data, shielding networks from mobile threats, and maintaining regulatory compliance. With a diverse global customer base spanning various industries such as aerospace, finance, healthcare, and government, Zenprise empowers IT departments to say "yes" to employee device preferences while preserving security and compliance. The company's executive team brings extensive enterprise software experience from companies like Mercury, EDS, Symantec, and McAfee.

Narus

Venture Round in 2009
Narus, an independent subsidiary of The Boeing Company, specializes in cybersecurity, focusing on advanced analytics to detect cyber threats from both insiders and external sources. The company offers a range of products, including NarusInsight, a traffic intelligence system designed to capture, analyze, and correlate Internet protocol traffic. Additionally, the NarusInsight Secure Suite helps service providers and governments identify network attacks, abuse, or behavioral anomalies. By leveraging big data analytics, Narus empowers organizations to predict and characterize sophisticated security threats, enhancing their ability to safeguard critical assets. With a diverse clientele that includes governments, carriers, and enterprises globally, Narus continues to innovate at the intersection of the semantic web and cybersecurity.

Borqs Technologies

Series B in 2009
Borqs Technologies, Inc. is a high-tech company headquartered in Beijing, China, specializing in the development of software and hardware solutions for Android-based smart connected devices. Established in 2007, the company operates through two main segments: Mobile Virtual Network Operator Services and Connected Solutions. Borqs provides a range of services, including 2G/3G/4G voice and data services, cloud solutions, and commercial-grade Android platform software tailored for mobile chipset manufacturers, device OEMs, and operators. Additionally, it manufactures customizable hardware products such as smart trackers, ruggedized handsets, tablets, and mobile connectivity modules. The company primarily generates revenue through hardware sales, with a significant portion derived from its operations in the United States, China, and India. Borqs Technologies employs a skilled workforce, predominantly consisting of technical personnel, many of whom possess advanced degrees and extensive research and development experience in the telecommunications and software industries.

Zenprise

Venture Round in 2009
Zenprise is a leading provider of secure mobile device management solutions, founded in 2003 and headquartered in Redwood City, California. The company specializes in protecting all layers of the mobile enterprise, ensuring organizations remain secure and compliant while embracing mobile device choice. Zenprise offers its solution via on-premise, public cloud, or hybrid cloud deployments, safeguarding sensitive corporate data, shielding networks from mobile threats, and maintaining regulatory compliance. With a diverse global customer base spanning various industries such as aerospace, finance, healthcare, and government, Zenprise empowers IT departments to say "yes" to employee device preferences while preserving security and compliance. The company's executive team brings extensive enterprise software experience from companies like Mercury, EDS, Symantec, and McAfee.

Ubicom

Series E in 2009
Ubicom specializes in developing communications and media processor (CMP) and software platforms tailored for real-time interactive applications and multimedia content delivery in the digital home. The company offers optimized system-level solutions for original equipment manufacturers (OEMs), supporting a variety of products such as wireless routers, access points, VoIP gateways, streaming media devices, and print servers. Ubicom's advanced multithreaded processor design, along with its real-time operating system and application-level solutions, ensures a high-quality user experience characterized by ease of use. Headquartered in Sunnyvale, California, Ubicom is a privately held, venture-backed company.

WiChorus

Series C in 2008
WiChorus specializes in developing software solutions for network management in the telecommunications sector. The company offers a smartcore platform designed for 4G packet core infrastructure, which supports the deployment of WiMAX and LTE networks. Its products include tools for service and subscriber management, content management, and network optimization. By focusing on enhancing network intelligence, WiChorus enables service providers to achieve superior performance and effectively monetize internet services.

WiChorus

Series B in 2007
WiChorus specializes in developing software solutions for network management in the telecommunications sector. The company offers a smartcore platform designed for 4G packet core infrastructure, which supports the deployment of WiMAX and LTE networks. Its products include tools for service and subscriber management, content management, and network optimization. By focusing on enhancing network intelligence, WiChorus enables service providers to achieve superior performance and effectively monetize internet services.

Jaxtr

Series A in 2007
Jaxtr, Inc. is a social communications company based in Mountain View, California, established in 2005. It provides a range of services that blend global calling, SMS, and social networking. Jaxtr allows users to receive calls through a VOIP connection while keeping their personal phone numbers private. The company offers global SIM cards for travelers, a mobile app, and the Jaxtr Voice app. Users can bypass expensive international phone charges by obtaining free local numbers in the countries they call, with a nominal fee for connection. Jaxtr also promotes interaction through its social network, Cafe Jaxtr, where users can engage in conversations based on shared interests. This platform enhances user activity and generates advertising revenue. Jaxtr distinguishes itself from competitors by enabling calls from any phone, whether mobile or landline, without requiring additional software or Internet access, thus simplifying the calling process. Since June 2009, Jaxtr has operated as a subsidiary of Sabse Technologies Inc.

Hammerhead Systems

Series D in 2007
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

Jaxtr

Seed Round in 2007
Jaxtr, Inc. is a social communications company based in Mountain View, California, established in 2005. It provides a range of services that blend global calling, SMS, and social networking. Jaxtr allows users to receive calls through a VOIP connection while keeping their personal phone numbers private. The company offers global SIM cards for travelers, a mobile app, and the Jaxtr Voice app. Users can bypass expensive international phone charges by obtaining free local numbers in the countries they call, with a nominal fee for connection. Jaxtr also promotes interaction through its social network, Cafe Jaxtr, where users can engage in conversations based on shared interests. This platform enhances user activity and generates advertising revenue. Jaxtr distinguishes itself from competitors by enabling calls from any phone, whether mobile or landline, without requiring additional software or Internet access, thus simplifying the calling process. Since June 2009, Jaxtr has operated as a subsidiary of Sabse Technologies Inc.

Zenprise

Series C in 2007
Zenprise is a leading provider of secure mobile device management solutions, founded in 2003 and headquartered in Redwood City, California. The company specializes in protecting all layers of the mobile enterprise, ensuring organizations remain secure and compliant while embracing mobile device choice. Zenprise offers its solution via on-premise, public cloud, or hybrid cloud deployments, safeguarding sensitive corporate data, shielding networks from mobile threats, and maintaining regulatory compliance. With a diverse global customer base spanning various industries such as aerospace, finance, healthcare, and government, Zenprise empowers IT departments to say "yes" to employee device preferences while preserving security and compliance. The company's executive team brings extensive enterprise software experience from companies like Mercury, EDS, Symantec, and McAfee.

Casabi

Series B in 2007
Casabi offers an end-to-end solution for telecommunications carriers, enabling them to deliver web-based content and services to a variety of connected devices, including cordless phones and smart home technology. The company's software supports a range of features such as visual voicemail, Yellow Pages search, SMS, email, and more, optimizing the user experience across devices like DVRs, refrigerators, and digital clocks. Central to its offerings is CasaCenter, an integrated suite of cloud-based services designed for family organization and communication. This platform includes features like a family dashboard, messaging, shared task lists, and a network address book, facilitating seamless interaction among family members. Casabi aims to enhance the functionality of low-cost devices by leveraging the growing prevalence of broadband and connected home devices, ensuring that all technology works together effectively.

Tejas Networks

Venture Round in 2007
Tejas Networks Limited is an Indian company that specializes in designing, developing, and manufacturing optical and data networking products. Established in 2000 and headquartered in Bengaluru, the company serves a diverse clientele, including telecommunications service providers, internet service providers, utility companies, defense organizations, and government entities, both domestically and internationally. Tejas Networks offers a wide range of products, including converged packet optical solutions, enterprise Ethernet switches, and high-density metro core platforms. Their offerings also encompass multi-service provisioning platforms, LTE solutions, and advanced GPON elements for optical access networks. Additionally, Tejas Networks provides software solutions for network management and optimization, along with services such as network planning, installation, and customer support. The company's products are utilized in various applications, including access networks and wireless backhaul, contributing significantly to its revenue primarily from the Indian market.

Narus

Venture Round in 2006
Narus, an independent subsidiary of The Boeing Company, specializes in cybersecurity, focusing on advanced analytics to detect cyber threats from both insiders and external sources. The company offers a range of products, including NarusInsight, a traffic intelligence system designed to capture, analyze, and correlate Internet protocol traffic. Additionally, the NarusInsight Secure Suite helps service providers and governments identify network attacks, abuse, or behavioral anomalies. By leveraging big data analytics, Narus empowers organizations to predict and characterize sophisticated security threats, enhancing their ability to safeguard critical assets. With a diverse clientele that includes governments, carriers, and enterprises globally, Narus continues to innovate at the intersection of the semantic web and cybersecurity.

Ubicom

Series C in 2006
Ubicom specializes in developing communications and media processor (CMP) and software platforms tailored for real-time interactive applications and multimedia content delivery in the digital home. The company offers optimized system-level solutions for original equipment manufacturers (OEMs), supporting a variety of products such as wireless routers, access points, VoIP gateways, streaming media devices, and print servers. Ubicom's advanced multithreaded processor design, along with its real-time operating system and application-level solutions, ensures a high-quality user experience characterized by ease of use. Headquartered in Sunnyvale, California, Ubicom is a privately held, venture-backed company.

Fultec Semiconductor

Series C in 2006
Fultec Semiconductor is a circuit protection semiconductor company based in Mountain View, California, founded in 2001. It specializes in transient blocking devices designed to protect telecommunication and data communication systems from over-voltage and over-current incidents. The company's products provide wide bandwidth circuit protection against various electrical disturbances, including lightning, power induction, power cross, and short circuit events. Fultec's solutions serve multiple applications across sectors such as telecommunications, data communications, sensors, automotive, and power distribution. As of October 2008, Fultec Semiconductor operates as a subsidiary of Bourns, Inc.

PingCo

Series A in 2006
PingCo.com designs, develops, and provides online cell phone software that enables text messaging over data channel. The company is based in China.

Hammerhead Systems

Series C in 2006
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

Pure Networks

Series B in 2006
Pure Networks, Inc. is a provider of networking software and services primarily catering to home users, small businesses, original equipment manufacturers, and broadband and Internet service providers in the United States. Founded in 2002 and based in Seattle, Washington, the company offers a range of products designed to simplify network management and enhance security. Notable offerings include Network Magic Pro, which enables users to set up and manage their networks easily, and Speed Meter Pro, a utility for diagnosing network connections. For corporate clients, Pure Networks provides platforms such as Networks Platform Technology, which helps manufacturers create customizable installations, and Pure Networks Support Solutions, aimed at reducing service providers' support costs. The company focuses on delivering tools that facilitate efficient network setup and maintenance, supporting various client needs in the ever-evolving networking landscape.

Casabi

Series A in 2005
Casabi offers an end-to-end solution for telecommunications carriers, enabling them to deliver web-based content and services to a variety of connected devices, including cordless phones and smart home technology. The company's software supports a range of features such as visual voicemail, Yellow Pages search, SMS, email, and more, optimizing the user experience across devices like DVRs, refrigerators, and digital clocks. Central to its offerings is CasaCenter, an integrated suite of cloud-based services designed for family organization and communication. This platform includes features like a family dashboard, messaging, shared task lists, and a network address book, facilitating seamless interaction among family members. Casabi aims to enhance the functionality of low-cost devices by leveraging the growing prevalence of broadband and connected home devices, ensuring that all technology works together effectively.

Inphi

Series D in 2005
Inphi Corporation is a provider of high-speed analog and mixed-signal semiconductor solutions, primarily serving the communications, data center, and computing markets in the United States. The company specializes in products that enhance data transmission capabilities, including amplifiers, encoders, multiplexers, and clock recovery devices, operating at speeds up to 100 Gbps. These solutions are integral to the functionality of servers, routers, switches, and storage systems, addressing bandwidth bottlenecks and optimizing throughput while minimizing latency. Inphi collaborates with system vendors to create proprietary simulation models that predict performance prior to semiconductor fabrication. The company's extensive product line also supports applications in test and measurement equipment and military radar systems. Inphi sells its products directly to original equipment manufacturers and indirectly through module manufacturers and original design manufacturers. Founded in 2000 and based in Sunnyvale, California, Inphi was previously known as TCom Communications, Inc. before rebranding in 2001.

Sunrocket

Series B in 2005
Sunrocket is a US-based company that specializes in redeveloping brand equity in underperforming and distressed assets. Founded in early 2004 by former MCI executives Joyce Dorris and Paul Erickson, the company has undergone a management overhaul aimed at creating a customer-focused online platform. Sunrocket.com aspires to be a comprehensive resource for home and business communication services, equipment, and products. The company offers access to industry-leading communication technologies and mobile entertainment, emphasizing cost-effective solutions. Additionally, Sunrocket is expanding its market presence to include international customers, further enhancing its service offerings and reach.

LGC Wireless

Series B in 2005
LGC Wireless, Inc. specializes in developing solutions for in-building wireless voice and data coverage, focusing on compact GSM and CDMA networks. The company provides distributed antenna systems and wireless LAN solutions, along with network systems tailored for public operators and equipment manufacturers. Its product offerings include modular services such as base station subsystems, network switching solutions, and wireless data support. LGC Wireless also delivers professional services that encompass needs assessment, design, site surveys, installation, project management, and maintenance. The company's solutions cater to a diverse range of sectors, including hospitality, corporate environments, government, healthcare, and sporting events. Founded in 1996 and headquartered in San Jose, California, LGC Wireless operates across North America, Latin America, Europe, and parts of Asia.

Zenprise

Series B in 2005
Zenprise is a leading provider of secure mobile device management solutions, founded in 2003 and headquartered in Redwood City, California. The company specializes in protecting all layers of the mobile enterprise, ensuring organizations remain secure and compliant while embracing mobile device choice. Zenprise offers its solution via on-premise, public cloud, or hybrid cloud deployments, safeguarding sensitive corporate data, shielding networks from mobile threats, and maintaining regulatory compliance. With a diverse global customer base spanning various industries such as aerospace, finance, healthcare, and government, Zenprise empowers IT departments to say "yes" to employee device preferences while preserving security and compliance. The company's executive team brings extensive enterprise software experience from companies like Mercury, EDS, Symantec, and McAfee.

T-RAM Semiconductor

Series C in 2005
T-RAM Semiconductor is a fabless semiconductor company that specializes in memory products utilizing its proprietary Thin-Capacitively-Coupled-Thyristor (TCCT) technology. This innovative approach enables the production of memory cells that are significantly smaller—one-fourth to one-eighth the size—compared to traditional 6T-SRAM technology. By leveraging its TCCT technology, T-RAM Semiconductor aims to deliver higher density and lower-cost High Performance Synchronous SRAM solutions. These products are designed to meet the discrete and embedded memory requirements of high-performance computer servers, networking, and telecommunications sectors.

Bevocal

Series E in 2005
BeVocal, Inc. specializes in providing hosted customer automated self-service solutions tailored for communications service providers and enterprise call centers. Founded in 1999 and headquartered in Mountain View, California, the company focuses on the mobile communications market by offering a range of speech-based customer care solutions. Its services include an integrated suite of voice and data applications, such as speech-enabled call routing and destination applications, designed to enhance customer interactions and streamline service processes. The self-service system enables users to perform various tasks like service activation and purchases without the need for live agents, thereby reducing operational costs and improving customer satisfaction. BeVocal operates as a subsidiary of Nuance Communications, Inc. as of April 2007.

Inphi

Series C in 2004
Inphi Corporation is a provider of high-speed analog and mixed-signal semiconductor solutions, primarily serving the communications, data center, and computing markets in the United States. The company specializes in products that enhance data transmission capabilities, including amplifiers, encoders, multiplexers, and clock recovery devices, operating at speeds up to 100 Gbps. These solutions are integral to the functionality of servers, routers, switches, and storage systems, addressing bandwidth bottlenecks and optimizing throughput while minimizing latency. Inphi collaborates with system vendors to create proprietary simulation models that predict performance prior to semiconductor fabrication. The company's extensive product line also supports applications in test and measurement equipment and military radar systems. Inphi sells its products directly to original equipment manufacturers and indirectly through module manufacturers and original design manufacturers. Founded in 2000 and based in Sunnyvale, California, Inphi was previously known as TCom Communications, Inc. before rebranding in 2001.

Orative Corporation

Series B in 2004
Orative Corporation develops mobile software solutions that improve voice communications for business mobile phone users. Its Orative Enterprise Software, a client-server solution, provides users to coordinate conversations, collaborate with colleagues, screen unwanted calls and interruptions, and access personal and corporate phone books. Orative was founded in 2002 and is headquartered in San Jose, California. Orative Corporation operates as a subsidiary of Cisco Systems, Inc.

Tasman Networks

Venture Round in 2004
Tasman Networks is a manufacturer of Multi-service edge router.

Pure Networks

Series A in 2004
Pure Networks, Inc. is a provider of networking software and services primarily catering to home users, small businesses, original equipment manufacturers, and broadband and Internet service providers in the United States. Founded in 2002 and based in Seattle, Washington, the company offers a range of products designed to simplify network management and enhance security. Notable offerings include Network Magic Pro, which enables users to set up and manage their networks easily, and Speed Meter Pro, a utility for diagnosing network connections. For corporate clients, Pure Networks provides platforms such as Networks Platform Technology, which helps manufacturers create customizable installations, and Pure Networks Support Solutions, aimed at reducing service providers' support costs. The company focuses on delivering tools that facilitate efficient network setup and maintenance, supporting various client needs in the ever-evolving networking landscape.

Ubicom

Series B in 2004
Ubicom specializes in developing communications and media processor (CMP) and software platforms tailored for real-time interactive applications and multimedia content delivery in the digital home. The company offers optimized system-level solutions for original equipment manufacturers (OEMs), supporting a variety of products such as wireless routers, access points, VoIP gateways, streaming media devices, and print servers. Ubicom's advanced multithreaded processor design, along with its real-time operating system and application-level solutions, ensures a high-quality user experience characterized by ease of use. Headquartered in Sunnyvale, California, Ubicom is a privately held, venture-backed company.

MobileWay

Series D in 2004
MobileWay is a provider of mobile services that focuses on delivering direct and secure connections to wireless operator networks globally. The company operates through two primary sectors: mobile marketing and entertainment services for brands and media firms, as well as network services for operators and content companies. With a network of 150 direct operator connections, MobileWay manages the deployment of wireless data applications, facilitating businesses in offering wireless multimedia messaging solutions.

Mobile 365

Series D in 2004
Mobile 365 is the new company formed from the merger of the two leaders in the mobile messaging world: InphoMatch, the leader in interoperable data and messaging services for mobile operators, and Mobileway, the leader in messaging solutions for brands and content providers. It is the global leader in the delivery, billing, and settlement of mobile messaging services. Their extensive footprint enables us to reach more mobile users—with more types of mobile data—than anyone else on the globe. They reliably deliver messages, premium content, and value-added services for the leading mobile operators, content providers, brands, and media companies worldwide.

Hammerhead Systems

Series B in 2004
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

MobileWay

Series C in 2003
MobileWay is a provider of mobile services that focuses on delivering direct and secure connections to wireless operator networks globally. The company operates through two primary sectors: mobile marketing and entertainment services for brands and media firms, as well as network services for operators and content companies. With a network of 150 direct operator connections, MobileWay manages the deployment of wireless data applications, facilitating businesses in offering wireless multimedia messaging solutions.

Peribit Networks

Series D in 2003
Peribit Networks specializes in WAN optimization solutions designed to enhance network performance for enterprise customers. Founded in 2000 and based in Santa Clara, California, the company provides platforms and software that increase WAN capacity, accelerate application performance, and offer prioritized application delivery along with comprehensive visibility into network and application performance. Through its innovative Molecular Sequence Reduction technology, Peribit identifies and eliminates redundant data that occupies a significant portion of WAN capacity, improving overall efficiency. With products deployed in over 900 enterprises globally, Peribit Networks effectively enables applications to operate more efficiently over existing network infrastructures.

Sylantro

Series D in 2003
Sylantro Systems specializes in providing software solutions for telecommunications service providers, enabling them to deliver hosted Voice over Internet Protocol (VoIP) applications and services to a variety of customers, including businesses and consumers. Its flagship platform, Synergy, is designed for carriers, allowing them to quickly launch a range of high-value telephony services, such as IP Trunking and hosted PBX solutions. In addition to its core software offerings, Sylantro also provides maintenance services, training, installation, and consulting to support telecom carriers and application service providers in delivering outsourced business communication services.

PostX

Series B in 2003
PostX ensures the secure electronic delivery of information vital to business and customer relationships. PostX delivers significant cost savings and benefits from an increase in effective communications with employees, partners, and customers. They enable secure delivery via Email, the Web, and Wireless networks to your customers, partners and employees.

Hammerhead Systems

Series A in 2003
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

Orative Corporation

Series A in 2003
Orative Corporation develops mobile software solutions that improve voice communications for business mobile phone users. Its Orative Enterprise Software, a client-server solution, provides users to coordinate conversations, collaborate with colleagues, screen unwanted calls and interruptions, and access personal and corporate phone books. Orative was founded in 2002 and is headquartered in San Jose, California. Orative Corporation operates as a subsidiary of Cisco Systems, Inc.

Bevocal

Series D in 2003
BeVocal, Inc. specializes in providing hosted customer automated self-service solutions tailored for communications service providers and enterprise call centers. Founded in 1999 and headquartered in Mountain View, California, the company focuses on the mobile communications market by offering a range of speech-based customer care solutions. Its services include an integrated suite of voice and data applications, such as speech-enabled call routing and destination applications, designed to enhance customer interactions and streamline service processes. The self-service system enables users to perform various tasks like service activation and purchases without the need for live agents, thereby reducing operational costs and improving customer satisfaction. BeVocal operates as a subsidiary of Nuance Communications, Inc. as of April 2007.

SkyStream Networks

Venture Round in 2003
SkyStream Networks develops market-leading networking solutions for advanced video and IP services. Our solutions enable our service provider, enterprise and federal customers to deliver enhanced video and IP services cost-effectively over wired and wireless networks. SkyStream's customers and partners include BT, Clear Channel Worldwide, Convergent Media, EchoStar Communications Corporation, Gilat, New Skies Satellites, Safeway, Telefonica and Telespazio.

Leapstone Systems

Series B in 2003
Leapstone Systems, Inc. specializes in communication software solutions tailored for network operators in the United States. The company offers the Communications Convergence Engine, a versatile software platform that allows operators to design, package, deploy, and manage a variety of content and services. This includes the CCE serviceBROKER, which facilitates the integration of diverse services such as voice and IPTV across multiple networks and devices. By providing a unified platform for creating and managing converged service bundles, Leapstone Systems enables wireline, wireless, and cable operators to enhance their service offerings and improve customer experiences.

Packet Design

Series A in 2003
Packet Design, LLC specializes in performance analytics technology for network operators, enterprises, and government agencies. Founded in 2003 and based in San Jose, California, the company offers an integrated suite of IP traffic and route analysis solutions, prominently featuring its Route Explorer system. This system is tailored for network engineers and operators, providing real-time monitoring, application path analysis, and advanced diagnostic tools. Key modules include Traffic Explorer for traffic flow insights, Layer 2 and Layer 3 routing analysis, and Multicast Explorer for visibility into services like market trading data and multimedia distribution. With capabilities in network simulation, troubleshooting, and cloud management, Packet Design enables clients to enhance service delivery, reduce churn, and optimize network performance. As of July 2018, the company operates as a subsidiary of Ciena Corporation.

Tasman Networks

Venture Round in 2002
Tasman Networks is a manufacturer of Multi-service edge router.

Inphi

Series B in 2002
Inphi Corporation is a provider of high-speed analog and mixed-signal semiconductor solutions, primarily serving the communications, data center, and computing markets in the United States. The company specializes in products that enhance data transmission capabilities, including amplifiers, encoders, multiplexers, and clock recovery devices, operating at speeds up to 100 Gbps. These solutions are integral to the functionality of servers, routers, switches, and storage systems, addressing bandwidth bottlenecks and optimizing throughput while minimizing latency. Inphi collaborates with system vendors to create proprietary simulation models that predict performance prior to semiconductor fabrication. The company's extensive product line also supports applications in test and measurement equipment and military radar systems. Inphi sells its products directly to original equipment manufacturers and indirectly through module manufacturers and original design manufacturers. Founded in 2000 and based in Sunnyvale, California, Inphi was previously known as TCom Communications, Inc. before rebranding in 2001.

Moxi Digital

Venture Round in 2002
Moxi Digital, Inc. is a home-entertainment platform company, designs software and hardware for cable and satellite set-top boxes. Founded in January 2000 by WebTV(R) creator Steve Perlman, Moxi Digital, Inc. is focused delivering a total home entertainment solution that enhances and simplifies the consumer experience, while providing new revenue opportunities for broadband operators. The Company will fulfill this promise by providing advanced platforms, products and enabling technologies to broadband network operators such as cable, satellite and DSL providers. Moxi can provide a complete end-to-end solution including both hardware and software or specific components that are integrated into existing cable and satellite systems. The Company's first all-in-one home entertainment platform, the Moxi Media Center, is a combination digital set-top box, video and music jukebox, media server, and Internet gateway and firewall. Through this device, which costs about the same as a basic digital set-top box in a typical home configuration, operators can deliver revenue-generating video, music and data applications to subscribers. Headquartered in Palo Alto, California, the privately-held start-up has attracted $67 million in Series A financing from America Online, Cisco Systems, EchoStar Communications, Mayfield, Vulcan Ventures, The Barksdale Group, The Washington Post Company and Macromedia Ventures.

Voxeo

Series C in 2002
Voxeo offers hosting and premise platform solutions designed to enhance communication for businesses of varying sizes. The company specializes in automating and connecting common phone calls through Interactive Voice Response (IVR) and Voice over Internet Protocol (VoIP) technology. By leveraging next-generation communication applications, Voxeo aims to improve customer service while reducing operational costs. Their services also integrate with mobile devices and social networks, allowing enterprises to better engage with their customers.

Peribit Networks

Series C in 2002
Peribit Networks specializes in WAN optimization solutions designed to enhance network performance for enterprise customers. Founded in 2000 and based in Santa Clara, California, the company provides platforms and software that increase WAN capacity, accelerate application performance, and offer prioritized application delivery along with comprehensive visibility into network and application performance. Through its innovative Molecular Sequence Reduction technology, Peribit identifies and eliminates redundant data that occupies a significant portion of WAN capacity, improving overall efficiency. With products deployed in over 900 enterprises globally, Peribit Networks effectively enables applications to operate more efficiently over existing network infrastructures.

Wavesplitter

Venture Round in 2002
WaveSplitter Technologies, Inc. specializes in the development, manufacturing, and distribution of both active and passive optical components for broadband networks catering to enterprise and residential markets. The company offers a diverse product range, including passive pump laser combiners, isolators, wavelength division multiplexers, and transceivers designed for various network types such as LANs, metro, access, and long haul. Additionally, it provides HDMI optical extender cables, fused fiber and planar light guide circuit products, and various optical modules. WaveSplitter's offerings aim to enhance the performance and capacity of optical networks while reducing infrastructure costs for its customers. Founded in 1996 and originally known as Applied Fiber Optics, the company is headquartered in Fremont, California, with additional facilities in Taipei, Taiwan, and Shenzhen, China.

Monet Mobile Networks

Venture Round in 2002
Headquartered in Seattle, Monet Mobile Networks Inc. (formerly Burst Wireless Inc.) was founded by telecommunications industry veterans in mid-1999. Monet is a wireless Internet service provider, offering users fast, mobile access to the complete Internet, email, corporate intranet applications, data and customer support. The Monet service can be purchased online at www.monetmobile.com, at Wireless Retail, Inc., Blockbuster Video, Best Buy stores and other authorized dealers in Sioux Falls, S.D., Fargo, N.D. and Moorhead, MN for $49.95 per month. The company's investors include Mayfield, Soros Private Equity Partners, Qualcomm, Intel Capital and Hook Partners. For more information, please visit www.monetmobile.com.

Bevocal

Series C in 2002
BeVocal, Inc. specializes in providing hosted customer automated self-service solutions tailored for communications service providers and enterprise call centers. Founded in 1999 and headquartered in Mountain View, California, the company focuses on the mobile communications market by offering a range of speech-based customer care solutions. Its services include an integrated suite of voice and data applications, such as speech-enabled call routing and destination applications, designed to enhance customer interactions and streamline service processes. The self-service system enables users to perform various tasks like service activation and purchases without the need for live agents, thereby reducing operational costs and improving customer satisfaction. BeVocal operates as a subsidiary of Nuance Communications, Inc. as of April 2007.

White Rock Networks

Series C in 2002
White Rock Networks, Inc. is a technology company that specializes in transport and switching, Ethernet service delivery, and Internet Protocol (IP) aggregation solutions targeted at carriers. Founded in 1999 and headquartered in Richardson, Texas, the company provides an array of transport and switching solutions, including SONET transport, Ethernet and TDM access, integrated ADM/DCS, standalone mini DCS, DWDM, and wireless backhaul systems. Additionally, White Rock Networks offers services related to dispersion compensation and various amplification techniques, enhancing signal quality and transmission reliability. The company's IP aggregation services encompass router port aggregation, backhaul solutions, and carrier-grade Voice over IP (VoIP) services, enabling efficient data transmission and communication for telecommunications providers.

QuantumShift Communications

Series C in 2001
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

Voxeo

Series C in 2001
Voxeo offers hosting and premise platform solutions designed to enhance communication for businesses of varying sizes. The company specializes in automating and connecting common phone calls through Interactive Voice Response (IVR) and Voice over Internet Protocol (VoIP) technology. By leveraging next-generation communication applications, Voxeo aims to improve customer service while reducing operational costs. Their services also integrate with mobile devices and social networks, allowing enterprises to better engage with their customers.

PostX

Series B in 2001
PostX ensures the secure electronic delivery of information vital to business and customer relationships. PostX delivers significant cost savings and benefits from an increase in effective communications with employees, partners, and customers. They enable secure delivery via Email, the Web, and Wireless networks to your customers, partners and employees.

MobileWay

Series B in 2001
MobileWay is a provider of mobile services that focuses on delivering direct and secure connections to wireless operator networks globally. The company operates through two primary sectors: mobile marketing and entertainment services for brands and media firms, as well as network services for operators and content companies. With a network of 150 direct operator connections, MobileWay manages the deployment of wireless data applications, facilitating businesses in offering wireless multimedia messaging solutions.

TeraLogic

Venture Round in 2001
TeraLogic designs integrated circuits, software and platforms for digital TV.

Clearwater Networks

Series B in 2001
Clearwater Networks (formerly XStream Logic) is developing the industry’s first single-processor packet processing solution capable of performing 7-layer packet processing at 10-Gigabit data rates. XStream’s family of network processors is targeted at solving the critical bottleneck in next-generation network infrastructure equipment: layers 4-7 packet processing. Edge and core routers, content-aware web switches, network attached storage devices, and other networking appliances all require the need to implement advanced services that are beyond the capability of existing semiconductor solutions. XStream ’s products are able to solve a wide variety of applications and advanced services using a simple, single-processor architecture that reduces system complexity and improves customers’ time to market.

Inphi

Series A in 2001
Inphi Corporation is a provider of high-speed analog and mixed-signal semiconductor solutions, primarily serving the communications, data center, and computing markets in the United States. The company specializes in products that enhance data transmission capabilities, including amplifiers, encoders, multiplexers, and clock recovery devices, operating at speeds up to 100 Gbps. These solutions are integral to the functionality of servers, routers, switches, and storage systems, addressing bandwidth bottlenecks and optimizing throughput while minimizing latency. Inphi collaborates with system vendors to create proprietary simulation models that predict performance prior to semiconductor fabrication. The company's extensive product line also supports applications in test and measurement equipment and military radar systems. Inphi sells its products directly to original equipment manufacturers and indirectly through module manufacturers and original design manufacturers. Founded in 2000 and based in Sunnyvale, California, Inphi was previously known as TCom Communications, Inc. before rebranding in 2001.

Lightbit

Venture Round in 2000
Lightbits Labs, Inc., established in 2015, specializes in data storage solutions for enterprise private clouds, Software-as-a-Service, and Infrastructure-as-a-Service providers. Headquartered in San Jose, California, with additional offices in Israel and New York, the company offers LightOS, a Software Defined Storage solution that integrates with existing datacenter infrastructure, and LightField, a Storage Acceleration Card supporting the LightOS stack. Lightbits' innovative NVMe/TCP protocol enables high-performance block storage, simplifying scalability and reducing costs for cloud-native applications in diverse environments.

Wavesplitter

Venture Round in 2000
WaveSplitter Technologies, Inc. specializes in the development, manufacturing, and distribution of both active and passive optical components for broadband networks catering to enterprise and residential markets. The company offers a diverse product range, including passive pump laser combiners, isolators, wavelength division multiplexers, and transceivers designed for various network types such as LANs, metro, access, and long haul. Additionally, it provides HDMI optical extender cables, fused fiber and planar light guide circuit products, and various optical modules. WaveSplitter's offerings aim to enhance the performance and capacity of optical networks while reducing infrastructure costs for its customers. Founded in 1996 and originally known as Applied Fiber Optics, the company is headquartered in Fremont, California, with additional facilities in Taipei, Taiwan, and Shenzhen, China.

Sylantro

Series C in 2000
Sylantro Systems specializes in providing software solutions for telecommunications service providers, enabling them to deliver hosted Voice over Internet Protocol (VoIP) applications and services to a variety of customers, including businesses and consumers. Its flagship platform, Synergy, is designed for carriers, allowing them to quickly launch a range of high-value telephony services, such as IP Trunking and hosted PBX solutions. In addition to its core software offerings, Sylantro also provides maintenance services, training, installation, and consulting to support telecom carriers and application service providers in delivering outsourced business communication services.

Voxeo

Venture Round in 2000
Voxeo offers hosting and premise platform solutions designed to enhance communication for businesses of varying sizes. The company specializes in automating and connecting common phone calls through Interactive Voice Response (IVR) and Voice over Internet Protocol (VoIP) technology. By leveraging next-generation communication applications, Voxeo aims to improve customer service while reducing operational costs. Their services also integrate with mobile devices and social networks, allowing enterprises to better engage with their customers.

Sphera Optical Networks

Venture Round in 2000
Sphera Optical Networks, Inc. specializes in designing and developing optical metropolitan networks tailored for internet service providers (ISPs), application service providers (ASPs), and global service providers. The company offers a range of services, including point-to-point connections, HUB services, optical virtual private networks, and comprehensive network management solutions. Additionally, Sphera provides resources such as metrohub white papers to support its clients in optimizing their network infrastructures.

Comstellar Technologies

Series A in 2000
Comstellar Technologies, Inc. specializes in the development of communications infrastructure, concentrating on creating network components and subsystems for both optical and wireless communication industries. The company's innovative operating model positions it to address the growing demand for high-quality communication solutions, which are becoming increasingly essential in today’s technology landscape. By focusing on these critical areas, Comstellar aims to capitalize on the vast opportunities available in the global market for communication technologies.

QuantumShift Communications

Series C in 2000
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

T-RAM Semiconductor

Series A in 2000
T-RAM Semiconductor is a fabless semiconductor company that specializes in memory products utilizing its proprietary Thin-Capacitively-Coupled-Thyristor (TCCT) technology. This innovative approach enables the production of memory cells that are significantly smaller—one-fourth to one-eighth the size—compared to traditional 6T-SRAM technology. By leveraging its TCCT technology, T-RAM Semiconductor aims to deliver higher density and lower-cost High Performance Synchronous SRAM solutions. These products are designed to meet the discrete and embedded memory requirements of high-performance computer servers, networking, and telecommunications sectors.

Ubicom

Venture Round in 2000
Ubicom specializes in developing communications and media processor (CMP) and software platforms tailored for real-time interactive applications and multimedia content delivery in the digital home. The company offers optimized system-level solutions for original equipment manufacturers (OEMs), supporting a variety of products such as wireless routers, access points, VoIP gateways, streaming media devices, and print servers. Ubicom's advanced multithreaded processor design, along with its real-time operating system and application-level solutions, ensures a high-quality user experience characterized by ease of use. Headquartered in Sunnyvale, California, Ubicom is a privately held, venture-backed company.

Excess Bandwidth

Series B in 2000
Excess Bandwidth Corp. specializes in developing algorithms that facilitate the connection of Internet voice and data services across multiple devices using copper twisted-pair wires. The company is recognized for creating technology that complies with the G.shdsl/HDSL2 high-speed symmetric DSL specification, which allows for the efficient transmission of high-speed voice and data over a single pair of wires. Established in 1998, Excess Bandwidth is a privately held company that focuses on designing symmetrical digital subscriber line physical-layer chips and mixed signal semiconductors for communications processors. Through its innovative solutions, the company aims to enhance high-bandwidth communications.

Bevocal

Series B in 2000
BeVocal, Inc. specializes in providing hosted customer automated self-service solutions tailored for communications service providers and enterprise call centers. Founded in 1999 and headquartered in Mountain View, California, the company focuses on the mobile communications market by offering a range of speech-based customer care solutions. Its services include an integrated suite of voice and data applications, such as speech-enabled call routing and destination applications, designed to enhance customer interactions and streamline service processes. The self-service system enables users to perform various tasks like service activation and purchases without the need for live agents, thereby reducing operational costs and improving customer satisfaction. BeVocal operates as a subsidiary of Nuance Communications, Inc. as of April 2007.

NewPort Communications

Series B in 2000
NewPort Communications is a supplier of mixed-signal integrated circuits for the high-speed communications market. The Company's business objective is to develop highly integrated single-chip solutions that enable economic scaling of the existing bandwidth capacity of today's fiber-based networks.

Avanex

Series D in 1999
Avanex was an optical components company designing and manufacturing optical components primarily for fiber-optic communication networks.

Tasman Networks

Venture Round in 1999
Tasman Networks is a manufacturer of Multi-service edge router.

QuantumShift Communications

Series B in 1999
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

Wavesplitter

Venture Round in 1999
WaveSplitter Technologies, Inc. specializes in the development, manufacturing, and distribution of both active and passive optical components for broadband networks catering to enterprise and residential markets. The company offers a diverse product range, including passive pump laser combiners, isolators, wavelength division multiplexers, and transceivers designed for various network types such as LANs, metro, access, and long haul. Additionally, it provides HDMI optical extender cables, fused fiber and planar light guide circuit products, and various optical modules. WaveSplitter's offerings aim to enhance the performance and capacity of optical networks while reducing infrastructure costs for its customers. Founded in 1996 and originally known as Applied Fiber Optics, the company is headquartered in Fremont, California, with additional facilities in Taipei, Taiwan, and Shenzhen, China.

Clearwater Networks

Series A in 1999
Clearwater Networks (formerly XStream Logic) is developing the industry’s first single-processor packet processing solution capable of performing 7-layer packet processing at 10-Gigabit data rates. XStream’s family of network processors is targeted at solving the critical bottleneck in next-generation network infrastructure equipment: layers 4-7 packet processing. Edge and core routers, content-aware web switches, network attached storage devices, and other networking appliances all require the need to implement advanced services that are beyond the capability of existing semiconductor solutions. XStream ’s products are able to solve a wide variety of applications and advanced services using a simple, single-processor architecture that reduces system complexity and improves customers’ time to market.

Ubicom

Series B in 1999
Ubicom specializes in developing communications and media processor (CMP) and software platforms tailored for real-time interactive applications and multimedia content delivery in the digital home. The company offers optimized system-level solutions for original equipment manufacturers (OEMs), supporting a variety of products such as wireless routers, access points, VoIP gateways, streaming media devices, and print servers. Ubicom's advanced multithreaded processor design, along with its real-time operating system and application-level solutions, ensures a high-quality user experience characterized by ease of use. Headquartered in Sunnyvale, California, Ubicom is a privately held, venture-backed company.

Qtera

Series B in 1999
Qtera Corporation, founded in 1988 by Fahri Diner and based in Boca Raton, Florida, specializes in the development of photonic transport systems aimed at telecommunication service providers. The company serves both new IP-based carriers and traditional long-distance carriers, offering solutions that enable low-cost bandwidth by eliminating the need for opto-electronic regeneration in ultra-high-capacity networks. Through its innovative technology, Qtera addresses the growing demands of the telecommunications industry for efficient and scalable data transport.

PostX

Series A in 1999
PostX ensures the secure electronic delivery of information vital to business and customer relationships. PostX delivers significant cost savings and benefits from an increase in effective communications with employees, partners, and customers. They enable secure delivery via Email, the Web, and Wireless networks to your customers, partners and employees.

Calico Commerce

Debt Financing in 1998
Calico Commerce specializes in developing business software solutions for e-commerce, offering a range of products designed to facilitate online sales. Their suite includes tools like Calico Advisor, Calico Network Advisor, MarketMaker, Price Point, and Loyalty Builder, which assist companies in selling complex goods and services over the internet. Founded in 1994 and based in Burlingame, California, Calico Commerce serves various industries including telecommunications, financial services, retail, and manufacturing. Its eSales Suite supports businesses by guiding customers through the buying process across multiple selling channels, such as online platforms, resellers, and call centers, thereby enhancing sales efficiency.

Assured Access Technology

Series A in 1997
Assured Access Technology specializes in the development and manufacture of networking equipment aimed at carriers and service providers. The company offers a range of products, including multi-service access concentrators and network management systems, which facilitate both data and voice over IP (VoIP) services. Their LAN and WAN access technologies empower service providers to deliver a comprehensive portfolio of networking solutions, enhancing connectivity and management capabilities for their clients.

Packet Engines

Funding Round in 1997
Packet Engines is a developer and manufacturer specializing in Gigabit Ethernet and routing-switch technology. The company creates networking solutions by designing and producing a range of products, including switches, hubs, and network interface cards. In addition to hardware, Packet Engines also offers intellectual property licenses related to its networking innovations. Through its focus on Gigabit Ethernet systems, the company aims to enhance the performance and efficiency of network communications.

Calico Commerce

Venture Round in 1997
Calico Commerce specializes in developing business software solutions for e-commerce, offering a range of products designed to facilitate online sales. Their suite includes tools like Calico Advisor, Calico Network Advisor, MarketMaker, Price Point, and Loyalty Builder, which assist companies in selling complex goods and services over the internet. Founded in 1994 and based in Burlingame, California, Calico Commerce serves various industries including telecommunications, financial services, retail, and manufacturing. Its eSales Suite supports businesses by guiding customers through the buying process across multiple selling channels, such as online platforms, resellers, and call centers, thereby enhancing sales efficiency.

Redback Networks

Seed Round in 1996
Redback Networks, Inc. provides advanced telecommunications networking equipment in North America, Europe, the Middle East, Africa, and Asia-Pacific. It offers SmartEdge service gateway that combines scalable carrier-class edge routing, Ethernet aggregation, and advanced subscriber management; SMS product families, which enable service providers and carriers to provide, aggregate, and manage broadband and dialup subscribers, and services through a single and unified platform; and the NetOp policy manager, a software platform that allows policy management and control across the SmartEdge and SMS product families. The company’s products enable service providers to build Internet protocol-based broadband networks to deliver high-speed access and services to consumers and businesses. It has collaboration agreements with DSL Forum, Broadband Services Forum, TIA, United States Telecom Association, and Isocore.

Nuance Communications

Series C in 1995
Nuance Communications, Inc. specializes in conversational and cognitive artificial intelligence solutions that enhance everyday work and life by amplifying human intelligence. The company provides a range of technologies that understand, analyze, and respond to user inputs, thereby increasing productivity and security. Its Healthcare segment focuses on improving clinical documentation and patient record management through innovations like cloud-based speech solutions and voice-enabled applications. In the Enterprise segment, Nuance delivers automated customer engagement solutions utilizing speech and natural language understanding across various channels, including voice, mobile, web, and messaging. The company also offers services such as voicemail transcription. With a diverse clientele in sectors such as healthcare, financial services, telecommunications, government, and retail, Nuance Communications has established itself as a leader in the field, leveraging decades of expertise in AI and customer engagement. Founded in 1992 and headquartered in Burlington, Massachusetts, the company was formerly known as ScanSoft, Inc. before rebranding in 2005.

Crescendo Communications

Venture Round in 1991
Crescendo Communications, Inc. provides FDDI-speed LAN over unshielded copper twisted pair wires.

Cypress Semiconductor

Venture Round in 1983
Cypress Semiconductor Corporation is a global leader in designing, developing, manufacturing, and marketing embedded system solutions with a focus on high-performance, mixed-signal, and programmable technologies. The company operates in two primary segments: the Microcontroller and Connectivity Division, which offers a wide range of solutions including microcontrollers, wireless connectivity, USB controllers, and capacitive sensing technologies; and the Memory Products Division, which specializes in various memory products such as NOR flash memories, SRAM, and specialty memory devices. Cypress Semiconductor serves diverse markets including automotive, industrial, consumer electronics, telecommunications, and medical applications. Its products facilitate the creation of innovative, differentiated electronic systems, helping engineers to accelerate their time to market. Cypress sells its offerings through a combination of direct sales, distributors, and manufacturing representative firms. Founded in 1982 and headquartered in San Jose, California, Cypress Semiconductor Corporation is a subsidiary of Infineon Technologies AG.
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