[SIPForum-discussion] Alcatel Omni Office Integration

[Se-gun]

Hi Guys,

I am trying to integrate a Splicecom 5100 Callserver with an Alcatel Omni PBX over SIP.

The SIP trunks are configured on both ends to register using IP addresses and no username or password for registration. All of this works fine.

When the Splicecom makes a call to Alcatel, it rings normally and when picked up, theres a clear audio path for conversation.

However, when the Alcatel rings the Splicecom. it rings as well, but when picked up, theres no audio path and nothing can be heard. In some cases, it hangs up after picking.

The two pbx are configured to communicate over a VPN link. The Splicecom has an IP address of 192.168.110.50 and is connected to router with 192.168.110.1 as the gateway.  On the other end, the Alcatel has an IP address of 192.168.90.2 and is connected to a router with an IP address of 192.168.130.1. Theres some form of NATTing going on at the Alcatel end.

Does anyone have any ideas what could be wrong?

Cheers

Segun