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kdotzoltan_2004
Beginner

IP to IP gateway

I have an IP telephony network, with a CCM 4.1(2)sr1 - inside the LAN of course, and three remote sites, with a FXS card equipped router each. There existed a simple VoIP interconnection between sites before CCM deployement in this site.

Now I'd like to interconnect my CCM to the remote sites.

Just having the remote sites as H323 gateways does not work, probably because of NAT, H323 and RTP(UDP) issues.

So I wanted to use my 2801 voice gateway as an IP to IP gateway, as described in this document: http://www.cisco.com/en/US/products/sw/voicesw/ps5640/products_configuration_guide_book09186a0080409b6d.html

The call setup goes through, I can see activity from my gw on the remote site debugging voice ccapi inout, but then the call fails with either

Disconnect cause 47 - if I have my GW set up as a h323 gateway, or with

cause 65 (??) - if I try to use the gateway as an IC trunk.

Any ideas would be appreciated.

TIA,

Zoltan

p.s.: VPN-ing the remote routers does work, but I'd like to figure out what am I doing wrong with the ip-to-ip gateway.

1 REPLY 1
thomas.chen
Frequent Contributor

Try changing the gateway address in CCM to an external address.

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