damn-it wrote:[color=blue]
> Tim wrote:[color=green]
>> ian wrote:[color=darkred]
>>> On your SNOM 300, I wonder if you have an inappropriate setting for
>>> the "Presence Inactivity Timeout" (under Preferences > Privacy
>>> Settings)?[/color]
>>
>> That setting isn't anything to do with audio. It is to do with presence.
>>
>>
>> I'm wondering now if the original poster has a SIP ALG in his router
>> which is killing the call. That the router can't cope with one way
>> RTP(audio).
>>
>> Tim
>>[/color]
> Good idea Tim
>
> Router is Draytek 2600. Not sure if there is anything to keep the RTP
> connection alive.... VoIP phone is plugged directly into the router.
>
> Thanks for the hint. fill fish around....
>
> JM[/color]

aha! We get a lot of problems with the SIP ALG in these routers. You
need to telnet into it to turn it off:

telnet (ip address of router)

enter username & password as you would to login to it's web interface.

Then issue the command:

sys sip_alg 0

Which should disable it.

Type in:

sys sip_alg

and it'll tell you if it's enabled or not.

If it comes up with an error something along the lines of "command not
found", you'll probably need to upgrade the firmware on the router,
should be available on the Draytek website.

cheers,
Paul.