tipsytopsy
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- Joined
- May 8, 2016
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Hi there,
PBXIAF with IncrediblePBX on Centos was a very simple process to setup, but I'm somehow struggling to figure out a small issue. I've tried many combinations of NAT, Firewall, etc. but no luck so far.
I'm trying to setup Twilio Elastic SIP as my trunk provider and for the most part, the setup is correct and also validated according to Twilio guides. Below is the my current status of system and the issue:
Inbound (PSTN Originating) - Works very well for UDP and TCP.
Outbound (Extension Trunking to PSTN) - The call goes through fine and voice from PBX to PSTN is heard fine. But I cannot hear the PSTN voice on the PBX extension.
The only difference I can see between these two scenarios is: Inbound origination - everything is handled using my static IP address and all my firewall rules are working fine. For outbound, my trunk is setup to call host {mytwilioorg}.pstn.twilio.com. So outbound voice to PSTN goes out fine, but I cannot hear their voice (receive RTP packets?).
Can anyone help me with this issue? Or what other things/ settings could I look at? Something in NAT (force_rport,comedia)? Thank you for any help in advance.
PBXIAF with IncrediblePBX on Centos was a very simple process to setup, but I'm somehow struggling to figure out a small issue. I've tried many combinations of NAT, Firewall, etc. but no luck so far.
I'm trying to setup Twilio Elastic SIP as my trunk provider and for the most part, the setup is correct and also validated according to Twilio guides. Below is the my current status of system and the issue:
Inbound (PSTN Originating) - Works very well for UDP and TCP.
Outbound (Extension Trunking to PSTN) - The call goes through fine and voice from PBX to PSTN is heard fine. But I cannot hear the PSTN voice on the PBX extension.
The only difference I can see between these two scenarios is: Inbound origination - everything is handled using my static IP address and all my firewall rules are working fine. For outbound, my trunk is setup to call host {mytwilioorg}.pstn.twilio.com. So outbound voice to PSTN goes out fine, but I cannot hear their voice (receive RTP packets?).
Can anyone help me with this issue? Or what other things/ settings could I look at? Something in NAT (force_rport,comedia)? Thank you for any help in advance.