Five modems, one CMTS first to get nod for DOCSIS 2.0

Wed, 12/18/2002 - 7:00pm
Jeff Baumgartner

Digital television agreements aside, the cable industry reached another significant milestone Thursday when CableLabs announced that five cable modems and one cable modem termination system were awarded passing grades for DOCSIS 2.0 specification following the completion of certification wave 24.

On the modem front, CableLabs certified the following vendors and products for DOCSIS 2.0: Motorola Broadband's SURFboard SB5100, Scientific-Atlanta's SPX2100, Texas Instruments (reference design), Terayon Communication Systems ' TJ715, and Xrosstech's XCM3800. Motorola's and S-A's models are powered by silicon from Broadcom Corp., TI's reference design uses the company's own silicon, and Terayon's new certified modem uses silicon from the company's spin-off chipmaker, Imedia Semiconductor.

Terayon also proved to be the big winner on the CMTS side of the fence, as CableLabs awarded 2.0 qualification to its BW3500, which also is powered by an Imedia chipset. Com21 Inc. also submitted its DOXController 1000XB CMTS for DOCSIS 2.0 testing, but it was not qualified in certification wave 24.

The end of CW 24 makes Terayon the only vendor to have both a cable modem and a CMTS okayed for DOCSIS 2.0. Terayon could hold that distinction until April 2003. CableLabs kicks off CW 25 on Jan. 27, 2003, but the wave will be broken down into four segments: CW25, CW25A, CW25B and CW25C. CW25A is slated to end on Feb. 19, the earliest crest of the wave, but the entire wave won't be completed until April 4.

"We completed the 2.0 specifications at the beginning of this year, and now have certified product by year end," said Rouzbeh Yassini, executive consultant to CableLabs and head of its Broadband Access group. "That kind of efficiency for getting products into a marketplace shows how effective the cable industry's DOCSIS process, which brings vendors, members and CableLabs together, has become."

Completing a banner day for DOCSIS 2.0, the International Telecommunications Union-Telecommunications Sector approved the specification as a standard, now known as Recommendation J.222. The ITU-T has already approved DOCSIS 1.1 as a standard under Rec. J.112.

During CW 24, CableLabs also certified 21 modems and qualified and three CMTSs for DOCSIS 1.1, and four cable modems for DOCSIS 1.0.

Parallel to those efforts, CableLabs also tested during the wave five embedded multimedia terminal adapters (eMTAs) and three CMTSs for PacketCable 1.0, and two cable modem gateways for CableHome 1.0. CableLabs said it will release results from those tests on Friday, Dec. 20.


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