10-13-2008 08:38 AM - edited 03-13-2019 05:43 PM
I have two locations and I am testing the following
- Sip trunk between them
Both locations have a CCM of 4.1.3
Both locations are connected via a VPN tunnel
--- The Tunnel is set to allow traffic from both voice networks. it is setup to allow tcp/up (all ports)
I created the sip trunk in ccm on both servers. I created the CCS and route pattern to test between both sides.
I can call each side, it answers. But I cannot hear any voice
I can hear DTMF tones when pressed but no audio.
I also see some werid issues with call hold and stuff but i am assuming thats the Limited SIP compat in the verison of call manager
Remote site - PIX 515
Main site - ASA 5520
10-13-2008 01:23 PM
seems SCCP traffic is routing correctly but not RTP, i'd suggest you to check any ACL config you have in there and also to verify the routing between the endpoints, sounds like a routing or blocking issue
HTH
java
if this helps, please rate
10-14-2008 04:05 AM
its conencted via a tunnel. all traffic from 10.10.10.1 can reach 10.10.11.1 and back.
The weird thing, I uninstalled my ip communicator and reinstalled it and now it works.
I dont believe there was an ACL since its a tunnel and I am protecting the entire subnet on both sides
10-14-2008 01:24 AM
could be, but try restarting CM service on both sides to test.
10-15-2008 02:16 AM
I was also facing same problem in my network.
Calling signal was passing properly but RTP packets are blocked. after open the UDP port no 16834 to 32767 on firewall it's working fine.
You can test on IP Phone (79XX) whether RTP Packet blocked or not. Make a call between clusters and press the ? Button twice on IP Phone.
And check RX and TX statics.
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