With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DteLcnOriginalCalledAddress
x25 Dte Logical Channel Number Original Called Address
1.3.6.1.4.1.562.2.4.1.90.4.12.1.6
This attribute indicates the X.25 address of the originally called DTE to which the call was attempted. This could be different from the value of the calledAddress attribute in the case where the original call was redirected.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DteLcnOriginalCalledAddress 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.