[SR-Users] Request Timeouts

Wilkins, Steve swwilkins at mitre.org
Wed Feb 7 13:59:01 CET 2018

Hi Alex,

Thank you again for looking at this.  

I am including a snippet of the last part of the Wireshark dump that occurs right before the dropped call.  There are many of the very same INFO Request going from Asterisk to Kamailio; there is also another INFO request in the middle that was different (but only occurs a few times).  The INFO Requests do have ;tag in the To header.

I noticed that Asterisk replies '200 OK' to INFO request from Kamailio but Kamailio does not send '200 OK' for INFO requests from Asterisk.  I did try forcing Kamailio to send a '200 OK' when it gets an INFO request, but that did not work.

You will see that there are a bunch of INFO request to Kamailio from Asterisk, then Kamailio sends a 408 Request Timeout , then Asterisk send a BYE and call drops shortly after.

Thank you!!,

-----Original Message-----
From: sr-users [mailto:sr-users-bounces at lists.kamailio.org] On Behalf Of Alex Balashov
Sent: Tuesday, February 6, 2018 8:34 PM
To: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: Re: [SR-Users] Request Timeouts

On Wed, Feb 07, 2018 at 01:31:43AM +0000, Wilkins, Steve wrote:

> Hi Alex Thank you!, there is so much to learn.
> As you suggested, I looked at the CSeq and the Timeout is from an INFO 
> message going from Kamailio to Asterisk.  Asterisk immediately sends 
> "BYE" back to Kamailio and then the call drops.  This is why I was 
> wondering if I needed to do anything for INFO messages.  "I think"
> this is why some calls are dropping. Does this make any since?

It does. Is the INFO message in-dialog[1] or out-of-dialog?

[1] Does it have a ;tag attribute in the To header?

Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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