try deassociate and reassociate the phone from the JTAPI user monitoring in the Call Manager administration, it seems that when JTAPI GW is looking for the extension it is not finding it the monitored ones.
If that is not enough try restarting the CTI Manager service on the Call Manager.
It could be, the extension information is not populated in JGW/PG, you could check by 'procmon' over jgw1, and see if extensions shows up with right status. If not, recycle 'cti manager' of CCM, or dis-associate and associate extension with JTAPI user in CCM.
Here is my secret!!! If you change the MAC Address on any phone that is associate to PG User. It gets locked up in the PG, and you either need to restart the PG Server, OR delete the agent / device target in Configuration manager, and re-add it to force the PG to update. The proper procedure for switching a phone out is to disassociate it from pguser before, or this typically always happen, always see it when people are moving around phones for training.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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clear text, these texts can be gibberish unless you understand fully
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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
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involving TAC. This document discusses the bas...