[SIPForum-discussion] 403-404 Response

[Peili Xu]

more cases for 403:

1: Interworking with ISUP mapping to cause code 21 call
rejected
2: unaurthorized service
3: requests from an untrusted domain (interconnection
case)

Peili

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of
Syed K
Sent: Friday, September 07, 2007 10:48 PM
To: discussion at sipforum.org
Cc: Syed K
Subject: Re: [SIPForum-discussion] 403-404 Response


Balaji,

403 means "we understand who you are and you are not
allowed to do this".

      In the following cases 403 reponse will be sent


1) The To header field identifies the original recipient
of the request designated by the user identified in the
>From field. The original recipient may or may not be the
UAS processing the request, due to call forwarding or
other proxy operations. If the UAS decides to reject the
request, it SHOULD generate a response with a
403(Forbidden) status code and pass it to the server
transaction for transmission

2) As the Caller A can terminate the ringing call i.e.,
before it is answered by sending Cancel, similarly
callee B can terminate the ringing call by sending 403
response.

3) UAC can locate credentials that are associated with
the proper realm, the potential exists that these
credentials may no longer be valid or that the
challenging server will not accept these credentials for
whatever reason (especially when "anonymous" with no
password is submitted). In this instance a server may
repeat its challenge, or it may respond with a 403
Forbidden. A UAC MUST NOT re-attempt requests with the
credentials that have just been rejected  

Thanks & Regards
  Syed Nazir

>Date: Fri, 7 Sep 2007 19:01:32 +0530
>From: "gurudatt balaji" <gurudattbalaji at gmail.com>
>Subject: [SIPForum-discussion] 403-404 Response
>To: "discussion at sipforum.org" <discussion at sipforum.org>
>Message-ID:
>
<85ddb520709070631s4434135egacb5608b650c0045 at mail.gmail.
com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Hi All,
>
>I have query in which call (failure) scenario do we get
following
response
>(pls note not during the registration)
>
>-    403 Forbidden
>
>-    404 Not Found
>
>Wrt 404, one reason could be user calling..unregistered
(in directory 
>server for ex. HSS) user.
>
>Pls let me know other call scenarios, thanks in
advance.
>
>Reg
>Balaji

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