[SIPForum-discussion] Unknown User

[gurudatt balaji]

Hi all

Thanks for the response.


 Reg
Balaji



On 7/11/07, Singh, Indresh (SNL US) <indresh.singh at nsn.com> wrote:
>
>  I would assume the place where the translation failure occured will be
> the first element which can play the announcement.
>
> In this case I think the call reached the IMS and while translating it
> could not find the terminating user, so it is generating a "404 Not Found"
> response, but before sending the 404 response it can connect to media server
> by sending 18x with SDP and play the announcement and then after
> announcement is over it can send the final error response ( 404 ).
>
> Think of it from other functionality perspective like serial ringing etc.
> IMS will try few terminating DNs ( as present in SR List ), but before each
> forwarding it has to play an announcement "call is being forwarded to " ...
>
> Regards,
>
> Indresh K Singh
>
>
>
>  ------------------------------
> *From:* discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org]
> *On Behalf Of *gurudatt balaji
> *Sent:* Wednesday, July 11, 2007 9:59 AM
> *To:* discussion at sipforum.org
> *Subject:* [SIPForum-discussion] Unknown User
>
>
>  Hi All,
>
> I've one query....
>
> When PSTN user makes a call to IMS (unknown user), who is going to play
> the announcement (saying wrong number/user) is it terminating switch (IMS)
> or originating switch (PSTN switch)?
>
> If it's PSTN, IMS will respond with 404-NON_FOUND and based on the
> response PSTN will play with announcement
>
> If it's IMS, how and what would be the logic?
>
> Thanks in advance
>
> Reg
> Balaji
>
>
>
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