Happy 2009 my friend! Just a guess here (sorry) :)
The Supervisory Disconnect feature provides a disconnect indication to the remote party in a two-party call after one side disconnects. This enables external applications connected to the Cisco voice gateway to promptly clear a call after receiving the disconnect indication. This feature triggers a power denial on FXS ports with loop-start signaling when a voice call disconnects. The power denial is only generated in a two-party call scenario when one party disconnects. Power denial is not generated if a call is on hold and either the active party or the on-hold party hangs up. Power denial is also not generated for a three-way conference call when one party hangs up. This feature is enabled and disabled on a voice port basis. The remote party receives the power denial signal for the duration that is set on the analog FXS port.
This may be something the fax machine does. The fax machine may just not actually go on-hook until 45 seconds later. I would use a combination of 'show voice call summary' and 'show voice port summary'. You'll see there whether or not the fax machine is actually back on-hook or not.
My guess is that you'll see that the fax machine is actually off-hook and it's a guard-out mechanism of the fax machine itself. On something like this FXS port I wouldn't expect a timer to keep it for 45 seconds.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...