In this system there are callmanager 3.3 in production, two 3550 central switches in HSRP, 16 other switches which are connected with optical links to 3550 central switches.
It was cluster of 15 switches (cluster group) configured on WS-C3550-12G - central + 14 other switches. There are two existing switches which are not members of the cluster, but devices which are connected work correctly.
I had to connect 3 new WS-C2960-24PC-L switches in system, and to move exsiting pnones and computers in new part of the building.
Problem which I describe was happened when I connected first switch in system, and this problem was never happened in other parts of the system. I configured this switch as a part of cluster group (like last member of cluster - I saw that 16 is maximum number of switches in cluster). In some part of the day everithing work correctly, but occasionally local and calles over PSTN (only with phones on this switch) were interupted after several seconds,1-2 minutes, PCs (only on this switch) lose file transfer connection. In callmanager ip phones didn't lose registration.
Situation was worse when I tried to configure new switches independent from cluster group. Haw I can debug this problem?
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
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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...
[toc:faq]CUCM Database Replication is an area in which Cisco customers
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