Hi,
Remove me form this mailing list.

Regards,
Amit
-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Sreejith 
Sadaasivan
Sent: Friday, March 21, 2014 9:57 PM
To: [email protected]; Paul Kyzivat
Subject: Re: [Sip-implementors] Query on Contact header parameter

Hello,

Please remove me from this mailing list.

Regards,
SREE
--------------------------------------------
On Fri, 21/3/14, Paul Kyzivat <[email protected]> wrote:

 Subject: Re: [Sip-implementors] Query on Contact header parameter
 To: [email protected]
 Date: Friday, 21 March, 2014, 8:43 AM

 You have now received answers to the
 question you asked.
 But not to the one you should have asked: how can you do  this in a way that 
doesn't violate standards?

 The procedure for managing new header field parameters was  updated by RFC 
3968. There is an IANA registry, and you need  an RFC to define a new one. I 
assume you haven't published  an RFC to define your proprietary parameter.

 An alternative that is open to you is a feature tag, as  defined in RFC 3840. 
In particular you can use feature tags  from the "URI tree" to express 
vendor-specific features.

 UAs are expected to ignore parameters they don't understand,  so you can "get 
away" with using an illegal unregistered  parameter, but you may run into 
trouble if the name you  choose is later chosen as the name of some standard 
option.
 Or if you do interop testing, someone may identify you as  non-complying for 
using a non-standard option.

     Thanks,
     Paul

 On 3/21/14 6:33 AM, J C Sunil Kumar Reddy wrote:
 > Hi All,
 >
 > I need to send a proprietary parameter in contact  header in an INVITE  > 
 > message to other end.
 > Something like this:
 >
 > Contact: "Sunil"
 <sip:[email protected];transport=tcp>;category:strvalue
 >
 > Here "category:strvalue" is my proprietary parameter.
 Where "category" is a
 > param name and "strvalue" is the value.
 >
 > What does the SIP standard specify? whether it should  be colon(:) or  > 
 > Equals(=)?
 > I mean according to SIP standards, which is the correct  one?
 >
 > category:strvalue
 > or
 > category=strvalue
 > or something else?
 >
 > Regards,
 > Sunil
 > _______________________________________________
 > Sip-implementors mailing list
 > [email protected]
 > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
 >

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