With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmCsRlpMsToIwfWindowSize
gsm Cs Rlp Ms To Iwf Window Size
This attribute specifies the maximum number of sequentially numbered Information (I) frames that may be outstanding (that is, unacknowledged) at any given time from the mobile station to IWF. GSM specification 4.22 defines the range as 0-61. During the Exchange Information (XID) negotiation, both Radio Link Protocol (RLP) entities (mobile station and IWF) can agree to use a specific window size. The IWF attempts to negotiate to the value specified by this attribute. The negotiated value can be viewed in the component GsmIwfRlpOp attribute msToIwfWindowSize. Changes to this attribute do not effect existing calls.
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmCsRlpMsToIwfWindowSize 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.