With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDlciVcSendSequenceNumber
appn Dlci Vc Send Sequence Number
This attribute displays the Vc internal packet's send sequence number. Note that a 'packet' in this context, may be either a user data packet, or an OAM frame.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnDlciVcSendSequenceNumber 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 speech servers right now.