Dear all,
I have a problem using SFLPhone with an Alcatel OXE v10 IPBX. When I receive a
call on SFLPhone from an other telephone, the communication hang up
automaticaly when I accept the call in SFLPhone. The other telephone get the
communication cut, but not SFLPhone.
I did a frame capture (eventually, I can send the Wireshark file). The
exchanged frames are :
>From IPBX : INVITE with SDP
>From SFL : Status 180 Ringing
>From SFL : Status OK with SDP
>From SFL : Status OK with SDP
>From SFL : Status OK with SDP
>From SFL : Status OK with SDP
>From SFL : Request BYE
>From IPBX : Status 404
When going deeper in the INVITE and in the Status OK, I saw this :
- In the incoming INVITE from the IPBX, the SDP contains :
v=0
o=OXE 123456 123456 IN IP4 192.168.20.36
s=abs
c=IN IP4 192.168.20.41
t=0 0
m=audio 32048 RTP/AVP 8 97
a=sendrecv
a=rtpmap:8 PCMA/8000
a=ptime:20
a=maxptime:30
a=rtpmap:97 telephone-event/8000
- In the OK response from the SFLPhone, the SDP contains :
v=0
o=sflphone 123456 1 IN IP4 192.168.40.43
s=sflphone
c=IN IP4 192.168.40.43
t=0 0
m=audio 26562 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=sendrecv
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
It does send the "200 OK" several time without getting any answer. I compared
with an other softphone, and the differences I saw were that this other
softphone send the telephone-event as 97 and not as 101.
Is there a way to use the code "97" in SFLPhone for the telephone-event
instead of 101 ?
Also, is it possible in the "m=" line to add the telephone-event as a
secondary audio codec ?
In advance, thank you for your answer.
Simon MORIN
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