I’m new to Asterisk and am having a bit of a problem. I have an Avaya system that connects to the PSTN. I have an Asterisk system in which I have a few SIP clients with both softphones (Zoiper) and actual physical phones (Aastra 6731i). I have established an H323 trunk between Asterisk and Avaya and from the SIP clients I can call the Avaya extensions and vice versa with no trouble. The problem begins when I try to make an external call from Asterisk.
If I make an external call from Asterisk, the external side can hear the voice from Asterisk, but on this side there’s no audio. There’s just one way audio and I don’t know why.
Both Asterisk and Avaya are on the same subnets. I have tried three diferent audio codecs (G729, G711 ulaw and G711 alaw) and all work the same.
I hope you can help me out with this.