With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
sigChanBchOperTable
sig Chan Bch Operational Table
1.3.6.1.4.1.562.2.4.1.115.7.4
*** THIS TABLE CURRENTLY NOT IMPLEMENTED *** This group contains various operational attributes of a B-channel serviced by a Signalling Channel.
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IPHost Network monitor allows you to monitor sigChanBchOperTable on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel secure routers right now.