With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmCsFaxT1CalledToneTimer
gsm Cs Fax T1 Called Tone Timer
This attribute specifies the delay to generate a Called (CED) tone at the IWF after the called station is connected to the line for mobile terminated calls. Changes to this attribute do not effect existing calls.
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmCsFaxT1CalledToneTimer 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.