One way Voice

Unanswered Question
Sep 10th, 2009

I am getting one way voice but only from calls where there has been a call forward has been set

I have this problem too.
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antonio.vazquez Thu, 09/10/2009 - 02:37


have you revised if there is any firewall between the endpoint and tht CUCM? If there is a firewall between them it's possibly that it is blocking some ports.


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AZaburdyayev Sun, 01/09/2011 - 07:12

You should check full ip path. How packed following. Ie in my case was similar problem.

My case was following :

             ISDN Pri                             h323

Cell GW --------------- Cisco GW(3725) ---------- Softswitch --- user

And between Cisco GW and Softswitch was router wich perfom nat for packets following to softswitch and I had problems.

In your case you should carefully check out connectivity and all network elements. Most often existing problem is firewall. Is it exists in your scheem ?


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