[SIPForum-discussion] No Bye Message Generated By the PBX.

[Matt Vlasach]

Randy,

Check to see if authentication is failing.  I have run into an issue  
where the pbx sends a bye to the carrier but the carrier challenges  
the bye with an Authorization Required response. The pbx I was using  
didn't know how to authorize a BYE so it would just dumbly terminate  
it's rtp stream.

Check you sip traces if this is the case. If so, enable bye  
authorization on your pbx (if possible) otherwise tell the carrier  
that your system cannot authorize bye messages.

If absolutely no BYE is being generated by the pbx, it sounds like a  
pbx issue because the pbx should always send a bye to request to  
terminate the session.

Good luck!

Matt Vlasach (mobile)
Pacific Swell Networks, Inc.
http://pacificswell.com

email | matt.vlasach at pacificswell.com
tel | 310.598.3017
fax | 877.531.6463

On Sep 22, 2009, at 6:59 AM, Ranjith Kumar <feddy006 at gmail.com> wrote:

> Hi All,
>
> I am encountering a Problem when we are connecting our PBX to our  
> Public Sip Trunk.  The call flow is as follows
>
> Invite  <--
> 100 Trying -->
> 180 Ringing -->
> 200 Ok / SDP <--
> ACK -->
>
> RTP <---->
>
>
> After this The Extention on the PbX side Hangs up but the PBX does  
> not generate a Bye Request Is there something that I have to check  
> in the Previous Packets that is causing this Behaviour from the PBX.
>
> Regards,
> Randy
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