HDSL721T2-MIB

Description: Manages HDSL 721T2 modem units, providing loop performance, alarm, and configuration objects for DSL access.

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HDSL721T2-MIB is a vendor-specific MIB from General DataComm (GDC) that models a subset of the broader GDCHDSL-MIB scoped to the 721T2 HDSL modem product. It defines a single versioning scalar (gdc721T2SystemMIBversion) and a tree of OBJECT IDENTIFIER alarm points under hdsl721T2Alarms — covering no-response, diagnostic-receive-error, power-up, unit-failure, and checksum-corruption conditions, plus line-level alarms for loss of signal, loss of sync word, out-of-frame, all-ones (AIS), remote alarm indication, unavailable/errored seconds, and major/minor bit-error-rate thresholds. Because the alarm nodes are bare OBJECT IDENTIFIERs rather than polled OBJECT-TYPE counters, this MIB is primarily consumed as a set of trap/alarm identifiers rather than a table of gettable performance data. It is useful for correlating HDSL line-quality events (signal loss, BER threshold crossings) with modem hardware faults on DSL access circuits. It is deployed on GDC 721T2 HDSL modem units providing DSL access, and the HDSL721T2-MIB MIB is what an administrator loads to decode these alarm OIDs in a network management system.

An operator watches for the hdsl721T2LossofSignal and hdsl721T2MajorBER alarm identifiers being raised against a given modem; a major-BER alarm accompanied by an unavailable-seconds indication would point to a degrading HDSL loop that is close to dropping the circuit.

Manages HDSL 721T2 xDSL modems including alarms, version information, and signal performance metrics.