On Jan 10, 10:31 pm, Linker3000 <linker3...@goo-nohyphens-glemail.com>
wrote:[color=blue]
> Maybe I am not getting the entire picture here - or maybe its an IAX
> thing - but why do you need to specify port forwarding to every phone?
>
> Lots of our sites have multiple (SIP) phones connected via ADSL to a
> central Asterisk server and STUN takes care of 'what goes where' -
> there's no specific SIP (in your case IAX) forwarding setup on the
> site's router. Remember, the phones initiate the connection/registration
> to the Asterisk server and so the setup is outbound with the help of
> NAT/STUN- nothing unexpected is initially going to be inbound and thus
> needs help getting past the firewall/NAT routing.
>
> Worse case (and I still can't see why you'd need it), why not have a
> local Asterisk server to which all the phones register and tie this
> server to the remote one?
>
> Fill me in, or tell me to shut up, if I'm missing something here!?[/color]

<grin>

I wouldn't dream of telling you to shut up :-)

The phones are SIP and the problem is incoming connections -
specifically the RTP ports
that a VoIP call uses for voice traffic. There seems to be no way of
telling this router to let
traffic through from outside unless you do it on a per device basis.
I can register the handsets, and initiate and receive calls, but I get
either one-way audio or none at all.

I don't really want to have to go to the trouble of having another
asterisk at this office just for seven phones
- particularly as this office is in Somerset and I (as the only IT
bod) am based in Derbyshire.

We already run two Asterisk servers - one in Derbyshire and one in
Warwickshire, and I would rather these phones
used one or other of these. We run an office in France which uses the
Warwickshire asterisk with no problems.

My problem is just this bl***y BT Business Hub, which is designed to
be user friendly and consequently seems impossible
to configure for anything other than web browsing or e-mail.

Do you use BT Broadband at all? and if so what router have you got on
the end of it?

Cheers

Alister