> Before I start trying to get the bridge approach to work,
> I'll try to finish the IP forwarding method. Currently
> working only on outgoing calls. The destination phone rings,
> but I hear no ringing tone in my SIP phone, and, once the
> call is answered, I get no audio either way.
> Any ideas about that? I know SIP with no audio often points
> towards a NAT issue, but figuring out what is going on in
> this scenario, and whether it qualifies as NAT, makes my head hurt.

OK, I guess this is to do with Asterisk taking itself out of the media
path. I am seeing packet2packet bridging appearing on the console when
I pick up the call, but the dialling handset has no route to the
Berofix. I've tried adding canreinvite=no to both the handset and
Berofix entries in sip.conf, and I've tried adding a route to the
handset's gateway pointing requests for the Berofix at the Astlinux
box, but I still have no audio.

Any ideas?

UPDATE: V odd. I changed everything from GSM to alaw, and it now seems
to work. A puzzle for Monday, methinks.

Thanks

Tom

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