CommWorks Corporation

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CommWorks Corporation was a subsidiary of 3Com Corporation, based in Rolling Meadows, Illinois. It was sold to UTStarcom, Inc. of Alameda, California in 2003.

[edit] Products and Technology

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CommWorks Corporation was a wholly-owned subsidiary company of 3Com Corporation. It was formerly the Carrier Network Business unit of 3Com, comprised of several acquired companies: US Robotics (Rolling Meadows, Illinois)^[1], Call Technologies (Reston, Virginia)^[2], and LANsource (Toronto, Canada),^[3]. CommWorks was able to use technology from each company to create IP softswitch and IP communications software. US Robotics provided media gateways (the Total Control 1000 product line, formerly used for dial-modem termination) and softswitch technology. Call Technologies provided Unified Messaging software. LANsource provided fax-over-IP software that was integrated with the Unified Messaging platform.

CommWorks/3Com co-developed an H.323-based softswitch with AT&T in 1998 for use in a "transparent trunking" application for AT&T's residential long-distance customers^[4]. In this solution, long distance telephone calls were redirected from the LEC's ingress CLASS 5 switch to the Total Control 1000 media gateway, where it was converted from TDM to IP and transported across AT&T's WorldNet IP backbone. When it reached the destination, it was passed to the egress LEC's CLASS 5 switch as an untariffed data call.

CommWorks modified the gateway and softswitch software to support SIP for MCI/WorldCom's hosted business offering in 2000. ^[5]

Although 3Com sold CommmWorks to UTStarcom^[6], they retained intellectual property rights to the softswitch technology. After modifying the software to enable enterprise PBX features, 3Com released this technology as VCX, the industry's first pure SIP PBX, in 2003.^[7]