On Apr 8, 12:54 pm, Tim <nutn...@kooky.org> wrote:[color=blue]
> Dave Saville wrote:[color=green]
> > I have a Siemens S450IP and it normally dials out on one of my VOIP
> > connections (Voiptalk.org). If my wife calls our doctor's, which has
> > some fancy pbx, after a few seconds of talking to the receptionist it
> > drops out to an engaged tone. This is very repeatable, and is somewhat
> > anoying. Today she was getting *really* cross so I said to force it
> > out over BT. She did this and of course it was perfect. Now I realise
> > that this is a typical example of one, to assume that BT will always
> > work, but has anyone any ideas what might be going on? It drops out in
> > the middle of sentences so can't be any silence detection thing.[/color]
>
> There are 2 ways to diagnose this problem
>
> 1) run wireshark locally and see whether the phone is sending a hangup
> (BYE) message or not.
>
> 2) AskVoiptalkto look in their logs and see what is going on.
>
> You could also try a call with another SIP provider to see if that makes
> any difference (although interesting, this doesn't rule out a phone problem)[/color]

Me and my housemates have seen similar behaviour with the S450 when
dialing numbers answered by PBXes. I've been meaning speak to
VoIPtalk about it because it's a repeatable problem.

Next time this happens, I'll make a note of the number and raise it
with support.

Tim: do you think this is a VoIPtalk issue or a handset issue (or some
combination)? It's so repeatable that I can't beleive it's affecting
all S450 users or all VT users...

alex
(ex VoIPtalk staff)