one way audio when transfering calls to PSTN

[abdou9]

Hi Mates,
We have an avaya aura setup, the issue is as follow.
When making a unattendant tranfer to an external number, we randomly have one way audio.When i trace the call, i see that after the transfer is completed, we still be part of the call path and the rtp is still going through our sbc back to original caller.
Any insighits?

 

[avayaguy23]

Check your rtp udp port range between your carrier to the SBC to make sure they match. Then do the same with your inside leg.