[Freeswitch-users] Phone spontaneously going into Hold when a call is established?
Nathan Neulinger
nneul at mst.edu
Fri Sep 7 03:48:09 UTC 2018
Finally managed to get a reproducible failure on this, but don't understand SIP enough to know where it's going wrong. I
have two local numbers that I can call via my local telco over a SIP trunk (MetaSwitch) - one reliably demonstrates the
behavior, the other reliably works normal:
The call that is working normally (leg w/ provider):
INVITE w/ neither sendonly nor sendrecv
100 Trying
183 Progress w/ a=sendrecv
200 OK w/ a=sendrecv
The call that is going into on-hold immediately (leg w/ provider):
INVITE w/ neither sendonly nor sendrecv
100 Trying
180 Ringing
200 OK w/ a=sendonly
INVITE w/ a=sendrecv
100 Trying
200 OK w/ neither sendonly nor sendrecv
Call that goes into on hold immediately (leg w/ device):
INVITE w/ neither, but has sdp
407
INVITE w/ neither, but has sdp
100
183 w/ neither
200 w/ neither
UPDATE w/ sendonly (which is after the second 200 OK above)
200 OK w/ recvonly
I'm going to try and do some more digging on this tomorrow, but if someone has any insights here on what the
proper/expected behavior is, I sure would love to hear it.
It seems like this may be somewhat related to FS-9765 - however there is no invite w/o an SDP. Also similar sounding to
FS-11234. I'm happy to take this forward to provider (I'm inquiring with them as well) but would be helpful to have some
more details on which piece is behaving incorrectly.
-- Nathan
-------- Original Message --------
From: Nathan Neulinger
Sent: Tue, Sep 4, 2018 2:45 PM CDT
To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Subject: Phone spontaneously going into Hold when a call is established?
I had seen this symptom a few times randomly, and just got a couple of reports from users where a call to an outside
number was going immediately to 'On Hold' when the person answered.
Is there anything in the SIP/RTP stream that could be expected to trigger that sort of behavior? I've seen it from a
polycom, and I believe one of the user reports today was with a yealink. User report was with a recently upgraded 1.6 ->
1.8 deployment. I believe the previous times I've seen it would have been on git builds of 1.8, but not certain.
-- Nathan
------------------------------------------------------------
Nathan Neulingernneul at mst.edu
Missouri S&T Information Technology (573) 612-1412
System Administrator - Architect
--
------------------------------------------------------------
Nathan Neulinger nneul at mst.edu
Missouri S&T Information Technology (573) 612-1412
System Administrator - Architect
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