CastleNet's CBC381 model for Docsis 3.0 is just one of the products approved by CableLabs during Certification Wave 71, according to data from the Louisville, Colo.-based cable R&D house.
According to a CastleNet specification sheet, the model supports up to eight downstream channels (double the base level requirements of the spec) and four upstream channels. In a full configuration, the model supports downstream bursts up to 320 Mbit/s using 6MHz-wide channels, or up to 400 Mbit/s in EuroDocsis mode, which uses 8MHz-wide channels.
CastleNet was not immediately available for comment, but an industry source believes the device uses Broadcom Corp. (Nasdaq: BRCM) silicon.
Broadcom and Texas Instruments Inc. (NYSE: TXN) have both developed Docsis 3.0 silicon that enables cable modems to flexibly set aside tuners for managed video services, a technique some MSOs, including some in the U.S., are eager to use for IPTV. That same technique is expected to grace an upcoming line of next-gen transport gateways that can handle both QAM- and IP-based video services. (See Harmonic Goes Lite for Cable IPTV, Cable Curious About IPTV Possibilities , Iowa Cabler Gets Wired for IPTV, QAM-IP Boxes: Cable's Gateway to Video Heaven?, and TI Flexes Docsis 3.0 Muscle .)
With the CableLabs stamp, CastleNet becomes the 13th vendor to win Docsis 3.0 certification. However, it wasn't the only one to gain CableLabs's wideband blessing following certification wave 71. Here's a roundup of the other five products to get passing grades:
Netgear's CMD31B, meanwhile, is a standalone Docsis 3.0 with an 8x4 channel bonding configuration. The modem comes equipped with a mode to support EuroDocsis 3.0 network environments.
The final Certification Wave of 2009 got underway last month. Results from that process, number 72, are expected to be released on or around Feb. 2, 2010. Products for Certification Wave 73, the first for 2010, are due to CableLabs by January 14.
Here's a rundown of modem and cable modem termination system (CMTS) gear to obtain Docsis 3.0 certification or qualification from CableLabs thus far:
Table 1: Docsis 3.0-Certified Modems, E-MTAs, and Gateways
|Vendor||Product||Silicon partner||Cert wave approved|
|Arris||Touchstone 702G (E-MTA)||TI||58, 59*, 63**, 67****|
|Arris||WBM750A||TI||59, 63**, 67****|
|Cisco||DPC3000||TI||58, 63**, 65***|
|Motorola||SB6120||TI||58, 63**, 67****|
|Motorola||SBV6220||TI||58, 59*, 63**|
|Netgear||CMD31T||TI||60, 63**, 65***|
|SMC||SMCD3CM||TI||58, 63**, 65***|
|Ubee Interactive||U10C035||TI||58, 63**, 65***|
|Ubee Interactive||DVM3200 (E-MTA)||Broadcom||65|
|Ubee Interactive||DVW3200 (E-MTA)||Broadcom||71|
|*Device re-certified for Docsis 3.0 and obtained initial PacketCable 1.5 certification in Wave 59.|
**Device re-certified for Docsis 3.0 in Wave 63.
***Device re-certified for Docsis 3.0 in Wave 65.
****Device re-certified for Docsis 3.0 in Wave 67.
Source: CableLabs, the companies, and Cable Digital News research.
Table 2: Docsis 3.0-Qualified Cable Modem Termination Systems (CMTSs)
|Vendor||Product||Wave qualified||Highest level of 3.0 qualification achieved*|
|Casa Systems||C2200 CMTS**||58||Full|
|Casa Systems||C3200 CMTS||58||Full|
|* CableLabs currently uses a tiered CMTS qualification system, awarding "Bronze," "Silver," and "Full" designations based on the product's supported features. |
** Casa's C2200 CMTS won Silver qualification in Wave 56.
Source: The companies, CableLabs, and Cable Digital News research.
— Jeff Baumgartner, Site Editor, Cable Digital News