Call dropped on freePBX

[dot250]

Good day Folk,
I got my freePBX connected on Mweb Talk with Telkom number been ported.
The PBX work fine except that some numbers like 087 700 9XXX work but some have a call dropped when the callerID picks the call
Number like 087 700 5000 (Mweb) call dropped after someone pick.
Can someone direct me here on have to address the matter?
I used alaw as codec.
Kind regards

 

[Prawnapple]

Good day Folk,
I got my freePBX connected on Mweb Talk with Telkom number been ported.
The PBX work fine except that some numbers like 087 700 9XXX work but some have a call dropped when the callerID picks the call
Number like 087 700 5000 (Mweb) call dropped after someone pick.
Can someone direct me here on have to address the matter?
I used alaw as codec.
Kind regards

Try adding A-law as well as U-law together. PCMU/PCMA should be together. You can also try to add G729 at the top of the list if you have G729.