You're on the right track. Currently, TCP keepalives are enabled for established h225 sessions. When the WAN goes down, TCP keepalives will be lost between the SRST GWY and the CCM, the SRST gwy will terminate active calls after about 4 minutes.
Fix for this requires a new CLI which make this timer a configurable h323 parameter.
I had same issue when use MGCP. The reason for that is Cisco use Q931 haulback to CCM, when wan lost Q931 can't be maintained through GW. Call drops. Having said that, from call preservation point MGCP even worse than H323?Any other comment?
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...
[toc:faq]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 discusse...