We use an UCM6301 as our PBX. We have multiple GXP2135 and some GXP2170 behind the pbx. When doing an initial setup we also checked if the Callforwarding was working and I guess we concluded that it is working once hearing that the forwarded destination rang. Guess noone checked if there was media.
Now we noticed that the signaling part of the Forwarded call does work, the media however does not.
We have the following users:
userA external user
userB GXP phone behind the PBX
userC mobile phone of the userB
On the PBX we turned on userB call forward if no answer towards userC. Once the call is made from userA towards userB the call rings and after the set period jumps over to userC. If userC answers the call he does not hear userA.
Just to make something clear. If userA calls userC (both being external) they hear each other. If userB calls userC they can also talk. The only problem is that the media fails if the call from A to C goes through the PBX (following the CFWD logic).
Is there something I can check quickly or does the problem require a trace?