[Freeswitch-users] No sip BYE from gateway at hangup

[Michael Collins]

On Thu, Dec 9, 2010 at 6:26 PM, Fraser Redmond <fraserredmond at gmail.com>wrote:

> I've got a gateway that seems to be sending the sip BYE really late.
>
> If the local (softphone) party hangs up then everything happens as normal
> as I'd expect it to. If the end terminated through the gateway hangs up then
> it's another 15-40 sec before Freeswitch finds out it's hung up and
> processes the end of the call.
>
> I did a "sofia profile external siptrace on" and during that 15-40 sec
> there was no activity until the end when the BYE turned up.
>
> I had the gateway run a sip trace their end and they said everything looked
> normal to them, and they said:
> "We have reviewed all of the calls specified both on the SIP signaling side
> and the SS7 side.  Under certain circumstances, some calls can take longer
> to fully tear from the PSTN than others.  "
> Which I interpret as a polite shrug of the shoulders :-)
>
I would ask which conditions cause calls to take longer to fully tear down
so I could do my best to avoid those conditions.
-MC
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