With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DteChargingInformation
x25 Dte Charging Information
1.3.6.1.4.1.562.2.4.1.90.23.1.13
This attribute specifies whether the charging information facility is to be signalled in a call request packet. A value of notSpecified means the facility is not signalled. A value of notRequested means the facility is signalled but charging information is not requested (that is, the charging info field of the facility is set Off). A value of requested means the facility is signalled to explicitly request charging information.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DteChargingInformation 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.