Maybe interworking *is* compromised, but this this situation *shouldn't*
compromise interworking. The UAC should just report what it is told. If
it is told BUSY, then report it, etc.
The only interworking problem is that the UAC can't accurately report
"DND" to the caller. This is only because there isn't one DND, but many,
all useful. The real problem is thinking that there is *one* DND.
Paul
Attila Sipos wrote:
>>> do all the SIP phones reply a "480" when DND?
>
> Apparently not.
>
> some use 486 (which seems to be used for evertyhing such a "no
> line or channel available"), some use 480 and even 603 is considered.
>
> as it says in the draft...
> http://www.ietf.org/internet-drafts/draft-elwell-bliss-dnd-01.txt
>
> The problem at present, with no standardized means of indicating DND
> and a variety of different implementations, is that interworking is
> compromised.
>
> Regards,
>
> Attila
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Iñaki Baz
> Castillo
> Sent: 04 April 2008 11:24
> To: [email protected]
> Subject: Re: [Sip-implementors] Does Don'tDisturm mode always return
> "480NotAvailable"
>
> El Friday 04 April 2008 10:07:38 Attila Sipos escribió:
>> "480 Not Available" is ok but normally 480 has the text "Temporarily
>> Unavailable".
>>
>> You can't rely on the text being shown as "Not Available" to determine
>> it was rejected for the DND reason.
>
> Yes, I just mind the status code (480) not the phrase error. My question is:
> do all the SIP phones reply a "480" when DND?
>
> Thanks a lot.
>
> --
> Iñaki Baz Castillo
> [EMAIL PROTECTED]
>
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