With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vsrActiveFaxRelayChannels
VoiceRoute Active Fax Relay Channels
1.3.6.1.4.1.562.2.4.1.117.16.1.10
This attribute indicates the number of B-channels that are currently performing fax relay.
Back to Nortel-Magellan-Passport-VoiceNetworkingMIB MIB page.
IPHost Network monitor allows you to monitor vsrActiveFaxRelayChannels 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.