[asterisk-users] SIP response code 603

[Alex Balashov]

The problem is with your provider, unless there is something wrong 
with about 1/4th of your calls - i.e. the destination is unroutable by 
that provider.

DHAVAL INDRODIYA wrote:

> thanks Alex,
> 
> thanks for your reply,
> 
> is there any changes needed for resolving this issue , in sip.conf or 
> need to change any dial parameter
> i currently Use IP-to-IP Dialing with option 'm' , also sometimes i  got 
> 503 "Service Unavailable",
> is there any eay to resolve it , if anything then please tell me .out of 
> 100 calls i got these errors in 25 calls.
> 
> regards
> 
> 
> On Wed, Nov 11, 2009 at 10:55 AM, Alex Balashov 
> <abalashov at evaristesys.com <mailto:abalashov at evaristesys.com>> wrote:
> 
>     DHAVAL INDRODIYA wrote:
> 
>      > dear all,
>      >
>      > what is the meaning of this
>      >
>      > *Got SIP response 603 "Declined" back from XXX.XXX.XXX.XXX*
>      >
>      > is it asterisk related issue , because sometimes my outgoing calls
>      > working fine , and in a day for 2 to 3 hours it gives me this
>      >
>      > my provider says its all fine there any one know meaning of this
> 
>     It is a SIP failure reply that your provider is sending you
>     periodically.  Either there is a legitimate reason that they are
>     denying some of your calls, or there is a problem on their end that
>     they are not aware of and/or themselves do not understand.
> 
>     According to RFC 3261, the precise intended meaning of the 603
>     Declined error message is:
> 
>     ---
> 
>     21.6.2 603 Decline
> 
>        The callee's machine was successfully contacted but the user
>        explicitly does not wish to or cannot participate.  The response MAY
>        indicate a better time to call in the Retry-After header field.  This
>        status response is returned only if the client knows that no other
>        end point will answer the request.
> 
>     ---
> 
>     In practice, 603s are often sent instead of 503 Service Unavailable
>     because, strictly, 6xx-class final responses indicate that no further
>     call attempts should be made by the sending user agent to that
>     destination.  This is not true of 4xx and 5xx-class errors.
> 
>     Also, why is your name rendered in all-capital letters?  Have you
>     considered becoming "Dhaval Indrodiya" instead of "DHaVAL INDRODIYA?"
> 
>     -- Alex
> 
>     --
>     Alex Balashov - Principal
>     Evariste Systems
>     Web     : http://www.evaristesys.com/
>     Tel     : (+1) (678) 954-0670
>     Direct  : (+1) (678) 954-0671
> 
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-- 
Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671