Hi,
I'm sure everyone is tired of NAT related questions, but I am really struggling here :(
I have freeswitch configured on an EC2 instance, with an elastic IP address. I've followed all of the NAT configuration instructions on the EC2 wiki (
http://wiki.freeswitch.org/wiki/Amazon_ec2) and have researched widely on other possible solutions to no avail. Most scenarios work fine, but I'm having issue with one particular call path (see scenario 4 below). Firewall is correctly configured on the EC2 machine.
Scenario 1: x-lite to x-lite
- Both clients running behind firewall/NAT
- Voice path in both directions
Scenario 2: x-lite to PSTN
- x-lite running behind firewall/NAT
- PSTN is connected via SIP-trunk from Freeswitch to VoIPon ITSP
- Voice path in both directions
Scenario 3: PSTN to PSTN
- Both endpoints connected via SIP-trunk (VoIPon ITSP) via Freeswitch
- Voice path in both directions
Scenario 4: PSTN to x-lite
- Exact reverse of scenario 2
- Voice path one way (PSTN to x-lite)
Is there something obvious that would prevent this specific scenario from working? I've dumped a SIP trace for the fourth scenario onto pastebin...
I'd really appreciate some assistance and guidance!
Kind regards,
Sara