[Freeswitch-users] Phone spontaneously going into Hold when a call is established?

[Nathan Neulinger]

Went through a git bisect on this, and tracked the behavior change to this commit;



commit 40bfe0fff566476ff95242581f391f5b5b1c7e32
Author: Anthony Minessale <anthm at freeswitch.org>
Date:   Mon Jan 16 15:27:36 2017 -0600

     FS-9154: [freeswitch-core] Add & remove video on re-invites #resolve


Note that these calls do NOT have any video.

I've added this info to FS-9983 jira issue which looks highly related, but will go ahead and file a new jira issue as well.

-- Nathan


*
*
*From:* Nathan Neulinger <nneul at mst.edu>
*Sent:* Thu, Sep 6, 2018 10:48 PM CDT
*To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
*Subject:* Phone spontaneously going into Hold when a call is established?

> 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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