Hi All,
I am having this annoying problem with setting up SIP friends in A2Billing. I have an extension in FreePBX that has perfect 2 way audio. I am also putting in the account number from A2B in the accountcode section of the extension in FreePBX for it to make outgoing calls and that works fine.
However, when I put in the credentials for the SIP friend created in A2Billing into an ATA, this is what happens:
1. nat=yes - SIP Friend will not ring - Can make outgoing call - There is two way audio between caller and callee
2. nat=no - SIP friend will not ring - Can make outgoing call - Caller can hear callee - Callee can't hear call
3. nat=force_rport,comedia - SIP friend will not ring - Can make outgoing call - Caller can hear callee - Callee can't hear call
4. nat=never - SIP friend will not ring - One way audio
This has been frustrating me for a week now, and the client is truly upset. I can register an extension on FreePBX fine and get two way audio when calls are made to the PSTN and from the PSTN to the extension, but with A2Billing in the mix, no dice!
I am using A2B 2.0, Asterisk 11.3, FreePBX 2.10, Linksys PAP2T ATA, Grandstream HT502 ATA
Any help would be appreciate. And no, upgrading is not an option!
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