With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
trkUnAckedFramerRepeatedFrm
trk Un Acked Framer Repeated Frm
1.3.6.1.4.1.562.2.4.1.60.2.2.13.1.13
This attribute is the total number of repeated frames (frames with the same sequence number) in interrupting mode that have been received from the link.
Back to Nortel-Magellan-Passport-UnackTrunksMIB MIB page.
IPHost Network monitor allows you to monitor trkUnAckedFramerRepeatedFrm 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.