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

[Fraser Redmond]

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 :-)

Any ideas of what I could look at? Or is it just one of those things that
happens?

The other gateways I have registered don't have the same problem.

Cheers,
Fraser
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