With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DtePeerProposeReverseCharging
x25 Dte Peer Propose Reverse Charging
1.3.6.1.4.1.562.2.4.1.90.2.12.1.6
This attribute specifies whether local/reverse charging is signalled in a call request packet. A value of default indicates the use of the value from the proposeReverseCharging attribute of the X25Dte component.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DtePeerProposeReverseCharging 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 modems right now.