Comments inline...

Thanks,
Nataraju A B

> -----Original Message-----
> From: [EMAIL PROTECTED]
[mailto:sip-implementors-
> [EMAIL PROTECTED] On Behalf Of Siddhardha Garige
> Sent: Wednesday, September 27, 2006 8:35 AM
> To: [email protected]
> Subject: [Sip-implementors] Contact field in Cancel and 603 Decline.
> 
> Hello all,
> 
> I looked in RFC and i did not find any info regarding this.
> 
> I guess its alright to add contact field in cancel and Decline
messages.
> 
> Polycom includes this field and Cisco does not.
> 
> Can anyone tell me if there is any advantage in not including contact
> field?
> 
[ABN] its clearly mentioned in 3261 that contact in CANCEL is clearly
not applicable...

      Header field          where   proxy ACK BYE CAN INV OPT REG
      Contact                 R            o   -   -   m   o   o
      Contact                1xx           -   -   -   o   -   -
      Contact                2xx           -   -   -   m   o   o
      Contact                3xx      d    -   o   -   o   o   o
      Contact                485           -   o   -   o   o   o

I really don't find any reason for including contact header in any of
the call termination requests in general...

Even if it is included the receiving entity can safely ignore it and go
on....

> Thanks in advance
> 
> -Sid
> 
> 
> 
> 
> ---------------------------------------------------------
> Siddhardha N. Garige
> Tampa, FL.
> Ph: (813)-298-4236.
> www.luminepixels.com
> ---------------------------------------------------------
> 
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