Octal-Port DMT ATU-C Line Card Feature Overview
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Cisco IOS Release 12.1(6)DA
Note The original option, which generates a minor alarm when configured minimum bit rates are
not met, is configured by default in DSL profiles. The default configuration isno dmt
minrate-blocking.
•dmt rate-adaptation
The dmt rate-adaptation command monitors the signal-to-noise ratio (SNR) on DSL lines. When
enabled, software monitors the upstream and downstream DMT ports for low SNR margins.When
the actual upstream or downstream margin falls below thedmt rate-adaptation margin for the
duration of the configured rate-adaptation interval, the line drops and attempts to retrain. If the
line is able to retrain, it trains to a lower bit rate with improved SNR margins.
Restrictions
The 8xDMT card is not spectrally compatible with SDSL, G.shdsl, or IDSL. Place these cards in a
separate chassis half when using them in the same chassis as 8xDMT line cards.
Related Features and Technologies
The 8xDMT line card is an upgrade of the 4xDMT (6260) and 4xFlexi (6160, 6260, 6015) line cards.
Related Documents
Hardware Documents
A complete list of all DSL hardware product related documentation is availableon the World Wide Web
at http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/index.htm.
Software Documents
A complete list of all DSL IOS software product related documentation is available on the WorldWide
Web at http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/ios_dsl/index.htm.
In the ATM software product related documentation, look for information pertaining to the
Cisco LightStream 1010, which uses the same software base as the NI-2 DSL systems. This
documentation is available on the World Wide Web at
http://www.cisco.com/univercd/cc/td/doc/product/atm/index.htm.