RE: CCM with NAT

Alberto,

You might get more traction on the puck.nether.net [cisco-voip] forum, but you could create a site to site tunnel or use phone proxy. Other than, I'm not sure of a way to control or signal the phones. Broadworks has an option for phones that are behind NAT, but I don't know of one natively for CUCM.

-ryan

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Alberto Santos
Sent: Monday, August 24, 2009 10:54 AM
To: ccielab_at_groupstudy.com
Subject: CCM with NAT

Hey GS,

I have question how I can handle the VoIP with NAT like the topology below.
A and B are registered to the same CCM.
When A calls B, A can't reach B, because A has no knowledge of B's Network

Does CCM have any feature which could fix this case?

                                                          Phone B
                                                          (IP Phone) (
172.16.0.10/24)

|
Phone A |
(IP Phone)----------------| Firewal(NAT)l |---------|-------CCM
(192.168.0.10/24)

BR,

-- 
Alberto
Blogs and organic groups at http://www.ccie.net