Drop SIP Calls in IAX2 Tunnel

FreePBX
1

Hello everyone
I have two Server and I join them through IAX2 Trunk and now theire extentions can to dial the other extention on the other server.
So I have a problem when the ip phones is abswers the sound is onway and after 10 seconds is call drop.

Please advise me to fix this problem
Thank you.

2

Make an intra company outbound route and as a dial pattern put the pattern that the remote extensions use e.g. the remote extensions are from 101 to 109 then the pattern is 10X.
At the trunk sequence put the iax trunk that connects the two boxes.