With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vRouteAcctServiceExchange
v Route Acct Service Exchange
1.3.6.1.4.1.562.2.4.1.116.5.2.1.4
This attribute specifies a user defined value, Data Service Exchange, as entered by the network operator and reported in the accounting record.
Back to Nortel-Magellan-Passport-VoiceNetworkingMIB MIB page.
IPHost Network monitor allows you to monitor vRouteAcctServiceExchange 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 multiplexers right now.