Public SIP Trunk outgoing calls Issue

[Dilashan_Vajira72]

Any one can support

I have facing an issue with Public SIP outgoing calls in one of my cooperate Customer equipped with 03 Nodes.

Node Numbers are Node 1,6 and 7

STC SIP trunk connecting with Node 1, All the outgoing call of Node 1,6 and 7 going through the STC SIP trunk.

Node 1 outgoing/incoming and transfer calls working fine. (Outgoing calls for iPhone working fine due to SIP INVITE SDP with G711 and G729)
If G729 stop, outgoing calls for iPhone not working from Node 1 as well.

Node 6 & 7 outgoing/incoming and transferring calls working fine except outgoing calls for iPhones.

Difference of the SIP invite between Node 1 & 6/7 mention as in sketch.
(No G729 of Node 6 and 7 in the Sip INVITE SDP message)

I have tried out most of the available options it can be effect to the issue, except creating new IP Domain in main Node 1


Any one have an idea how to activate G729 for Node 6 and 7 outgoing calls.

Thanks

[frank]

Under IP / Domain / Compression

[Dilashan_Vajira72]

Hi Frank
thanks for your update.
Does this changes should do in remote nodes or main node?

Thanks

[frank]

INTRA is local
EXTRA is toward outside