- Red, 2250 points or more
I have a one way audio issue while calling the PSTN from the Avaya PBX. I have the following topology:
Avaya PBX --- Cisco GW --- CPE Service Provider
192.168.108.100 : Router Cisco (Gateway)
192.168.108.1 : Avaya Extreme (Switch)
192.168.109.2 : Media GW Avaya
192.168.108.3 : PBX Avaya
192.168.108.11: IP Phone
220.127.116.11 : IP Address for Signaling of CPE SP
18.104.22.168 : IP Address for Media of CPE SP
So the main problem is we can ONLY receive the service of the SP on our Cisco GW since Avaya does not support that interface. Since the Cisco GW loopback0 (22.214.171.124) is the one registered with the Service Provider, they only accept calls from that IP Address.
I made a NAT to announce everything with the loopback, the call is completed since the h.323 signaling is done with the loopback but the media is connected using the IP address of the avaya, so there is no audio.
Is there something that can be done on the Cisco GW to announce only the Loopback and avoid that one way audio? I'm not quite a Routing guru so any help will be appreciated.
Attached are the Sh run of the Cisco GW, a trace on the Service Provider CPE and a sniffer trace on the phone (eventhouhg is saved as a txt it needs to be open with ethereal or any other sniffer program)