Yes Silence suppression does work. Sounds to me like you are not matching the correct voip dial peer when you are going out. Try doing the incoming called-number command on the dial-peer with the no vad on it.
I had the same problem with you before. Let me share to you some procedure that I did to elimanate that problem.
Now, don't change the settings of silence suppression under CCM. Always set it to false. On your voip dial-peer, configure it with "no vad". Also add this command in your voip dial-peer "incoming called-number ."
This will solve your problem. You can make an experiment with this. Try removing the "incoming called-number ." command in the voip dial-peer and then make an outside call then monitor it with show voice call summary. You will notice that the under enable vad column it will display "y" meaning vad is enabled. After that configure your voip dial-peer again with "incoming called number ." The make an outside call and perform same monitoring steps. You will notice that under enable vad column it will display "n" meaning your outgoing call is vad disabled.
It is an issue of lacking comfort noise. So if A stops talking and B hears no noise in the background level, B thinks A is cut off but actually A is here. Check whether the comfort noise parm is enabled. Also I'm not sure whether 7960 and VG200 send SID to generate comfort noise. This is one direction you can look at.
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...