Paul Hayes wrote:
> damn-it wrote:
>> Tim wrote:
>>> ian wrote:
>>>> On your SNOM 300, I wonder if you have an inappropriate setting for
>>>> the "Presence Inactivity Timeout" (under Preferences > Privacy
>>>> Settings)?
>>>
>>> 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
>>>
>> 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
>
> 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.

All,

On the draytek promt:
> sys sip_alg ?
usage: sys sip_alg [value]
0 - disable SIP ALG
1 - enable SIP ALG
current SIP ALG is disabled


So after this last test using voip.co.uk, I think I am going to blame
voipfone rather than draytek or snom....

Any other suggestion, just lst me know...

Thanks

JM