x
?– Coexisting on the same channel as DOCSIS 1.x
?– Including interoperable silicon from multiple suppliers
The latest revision of the DOCSIS standard, DOCSIS 3.0, also provided a number of
enhancements, most notably
?– Channel bonding (both downstream and upstream)
?– Full support for IPv6
?– Support for source-specific multicast and multicast QoS
?– Enhanced encryption and authentication
Table 6.1 shows the data rates provided by the different versions of the DOCSIS
standard.
DOCSIS Standards
The four successive versions of the DOCSIS cable modem specifications provide increasing
capabilities and sophistication, while maintaining multi-vendor interoperability
Hybrid Fiber-Coax 149
and full backward and forward compatibility. As important enabling technologies for
worldwide deployment of residential and commercial broadband data services, they
have been standardized both in the U.S. and internationally.
Version Standard
DOCSIS 1.0 ITU-T J.112-B (03/98), ANSI/SCTE-22
DOCSIS 1.1 ITU-T J.112-B (03/01), ANSI/SCTE-23
DOCSIS 2.0 ITU-T J.122 (12/02), ANSI/SCTE-79
DOCSIS 3.0 ITU-T J.222 (07/07)
All DOCSIS specification versions contain two technology options in order to comply
with regional frequency planning practices.
Pages:
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385