404 Not Found with Voiceflex

[MartinC]

Has anyone got any ideas on this one? I have just set up the trial version of 3CX and registered a SIP trunk with Voiceflex. I can receive calls with no problem, but cannot make outgoing calls.

In the logs I get a '404 Not found' error, so I contacted Voiceflex support to ask if they had any guides to configuring their SIP trunks on 3CX, or why I was getting this error. The response I got was:

How it works;
You send us an outbound call, we reply with 404 not found, you send the invite to us again then the call goes through.

Does anyone know how to get 3CX to send the invite again after the 404?

 

[craigreilly]

I thought 3cx did this by design up to 3 times... Maybe I am thinking of something else.

What country are you in?

 

[MartinC]

I'm in the UK. Here's the log of what's happening:

13-Nov-2014 09:31:43.309 NAT/ALG check:L:7.1[Extn] REQUEST 'INVITE' - basic check passed. No information for extended checks
13-Nov-2014 09:31:43.310 [CM503001]: Call(C:7): Incoming call from Extn:1874 to <sip:[email protected]:5060>
13-Nov-2014 09:31:43.311 Call(C:7): Call from Extn:1874 to 02037351878 matches outbound rule 'Route Via VoiceFlex'
13-Nov-2014 09:31:43.311 Line limit check: Current # of calls for line Lc:10000(@VoiceFlex[<sip:[email protected]:5060>]) is 0; limit is 1
13-Nov-2014 09:31:43.311 [CM503004]: Call(C:7): Route 1: from L:7.1[Extn] to T:Line:10000>>2037351878@[Dev:sip:[email protected]:5060]
13-Nov-2014 09:31:43.311 [CM503027]: Call(C:7): From: Extn:1874 ("Martin Test" <sip:[email protected]:5060>) to T:Line:10000>>2037351878@[Dev:sip:[email protected]:5060]
13-Nov-2014 09:31:43.381 [CM503025]: Call(C:7): Calling T:Line:10000>>2037351878@[Dev:sip:[email protected]:5060] for L:7.1[Extn]
13-Nov-2014 09:31:43.623 [CM503003]: Call(C:7): Call to <sip:[email protected]:5060> has failed; Cause: 404 Not Found/INVITE from 93.95.124.20:5060
13-Nov-2014 09:31:43.623 Call to T:Line:10000>>2037351878@[Dev:sip:[email protected]:5060] from L:7.1[Extn] failed, cause: Cause: 404 Not Found/INVITE from 93.95.124.20:5060
13-Nov-2014 09:31:43.623 Leg L:7.2[Line:10000>>2037351878] is terminated: Cause: 404 Not Found/INVITE from 93.95.124.20:5060
13-Nov-2014 09:31:43.623 L:7.1[Extn] failed to reach Line:10000>>2037351878, reason Not Found
13-Nov-2014 09:31:43.623 [CM503020]: Call(C:7): Normal call termination. Call originator: Extn:1874. Reason: Not found
13-Nov-2014 09:31:43.674 Leg L:7.1[Extn] is terminated: Cause: BYE from PBX

 

[craigreilly]

I do not see that they are an approved provider in 3cx. Not saying it will not work - but there are reasons that certain providers are listed.
A wireshark of the call will give you much more detail than the 3cx logs.

Perhaps install x-lite and use the credentials there, just to ensure you have the correct information as well.