I've posted another message yesterday about the same problem. I will try to be more detailed to get some help from the list:
I am connecting two PBX (PBX-A and PBX-B) using two * (*-A and *-B). Asterisks are connected via IAX2. The PBXs area connected to each * using an E1.
PBX-A <-- E1 --> *-A <-- IAX2 --> *-B <-- E1 --> PBX-B
When an extension from PBX-A calls an extension at PBX-B, PBX-A calls *-A that calls *-B and then PBX-B. The problem is: if extension at B is busy, *-A returns Normal Call Clear to PBX-A and PBX-A bills the call normally. I contacted PBX support and they said me *-A should return a different value to PBX-A (I think it is busy detected).
######### iax.conf at PBX-A:
[pbxb] type=friend auth=md5 secret=secret bandwidth=low disallow=all allow=speex
######### extensions.conf at PBX-A:
[default]
exten => _.,1,Dial(IAX2/[EMAIL PROTECTED]/${EXTEN})I tried to insert "|r" for ringback-only at Dial command and there is no difference.
I search the mailing list and I found some emails about Call Signalling and IAX protocol.
Any clue?
Daniel
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