Motorola announced commercial availability of a high-density card for its BSR 64000 cable modem termination system—which supports the channel-bonding features of DOCSIS 3.0—increasing the CMTS’s downstream capacity more than fivefold.
The TX32 Decoupled Downstream Module supports 32 quadrature amplitude modulation (QAM) channels in a single slot in the Motorola BSR 64000. The module also incorporates IPv6 and Advanced Encryption Services (AES).
When it originally announced plans for the TX32 in June 2007, Motorola expected to ship the module by the end of the year.
The TX32’s downstream QAMs can be coupled with the downstream and upstream channels on existing 2:8 CMTS modules to provide up to 138 downstream channels in a single BSR 64000, for up to 5 Gigabits per second of aggregate downstream capacity. Without the TX32, the BSR 64000 supports a maximum of 24 downstream QAM channels.
CableLabs earlier this month granted DOCSIS 3.0 certification for the Motorola SurfBoard SB6120 and SBV6220 cable modems and DOCSIS 3.0 bronze qualification for the Motorola BSR 64000. The bronze certification reflects support for a baseline set of DOCSIS 3.0 features, including downstream channel bonding.