With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
tdmaCsV42N400RetransLimit
tdma Cs V42 N400 Retrans Limit
This attribute specifies the maximum number of times the IWF retransmits a frame upon expiry of t401AckTimer before appropriate recovery action is taken. Information about N400 (Retransmission Limit) is not carried in the Exchange Identification (XID) negotiation at call setup time so both sides operate with different N400 values. Changes to this attribute do not affect existing calls.
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IPHost Network monitor allows you to monitor tdmaCsV42N400RetransLimit 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 secure routers right now.