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Re: [sip-clf] draft-ietf-sipclf-problem-statement-05 Reason-Phrase

Anders Nygren <anders.nygren@gmail.com> Tue, 15 March 2011 21:30 UTC

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Date: Tue, 15 Mar 2011 15:32:01 -0600
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From: Anders Nygren <anders.nygren@gmail.com>
To: Peter Musgrave <peter.musgrave@magorcorp.com>
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Subject: Re: [sip-clf] draft-ietf-sipclf-problem-statement-05 Reason-Phrase
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On Tue, Mar 15, 2011 at 3:23 PM, Peter Musgrave
<peter.musgrave@magorcorp.com> wrote:
> I think as a predefined option field Reason Phrase makes sense.
>
> It may be worth thinking about other optional header fields people might want...Refer, History-Info, Session-ID - might become a bit of a long list. Would this be viewed as useful?
>

I don't have a list of header fields that I want to add, but I think
it may be good
to define most SIP headers as optional field just to prevent too many
vendors from
defining their own extensions for standard sip headers.

/Anders

> Peter (as individual)
>
> On 2011-03-15, at 5:10 PM, Anders Nygren wrote:
>
>> Hi
>> The list of mandatory fields includes Status-Code but not Reason-Phrase.
>> Wouldn't it be useful to have Reason-Phrase also since RFC3261
>>
>> 21.1.5 183 Session Progress
>>
>>   The 183 (Session Progress) response is used to convey information
>>   about the progress of the call that is not otherwise classified.  The
>>   Reason-Phrase, header fields, or message body MAY be used to convey
>>   more details about the call progress.
>>
>> 21.4.1 400 Bad Request
>>
>>   The request could not be understood due to malformed syntax.  The
>>   Reason-Phrase SHOULD identify the syntax problem in more detail, for
>>   example, "Missing Call-ID header field".
>>
>> So at times Reason-Phrase gives some additional information that can not be
>> obtained from just the Status-Code. Maybe as an optional field.
>>
>> /Anders
>> _______________________________________________
>> sip-clf mailing list
>> sip-clf@ietf.org
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>
>

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