Hi,

yes, fixing registry issues are orthogonal to progressing this draft.

Cheers,

Gonzalo

On 26/04/2013 2:09 AM, Cullen Jennings (fluffy) wrote:
> 
> On Apr 25, 2013, at 11:58 AM, Adam Roach <[email protected]> wrote:
> 
>> On 4/24/13 09:19, Peter Saint-Andre wrote:
>>> Hi Elwyn, thanks for the review.
>>>
>>> On Apr 23, 2013, at 2:12 PM, Elwyn Davies wrote:
>>>> Generic comment about SIP Header Field Parameters registry: For the 
>>>> uninitiated this registry is rather opaque.  Some parameters, such as the 
>>>> Call-Info purpose parameter for which an extra value is defined here, have 
>>>> predefined values.  However the predefined values themselves are not in 
>>>> the registry and just giving a whole RFC reference for places where values 
>>>> are defined is not very helpful. For example, in the case of Call-Info, 
>>>> the initial predefined values of purpose are buried in the Call-Info rule 
>>>> in the ABNF in Section 25.1 of RFC 3261;  also, Section 20.9 describes the 
>>>> predefined values (such as "icon") as 'parameters' rather than values of 
>>>> 'purpose'.  It would probably be helpful to either improve the references 
>>>> in the registry table or actaully quote the possible predefined values in 
>>>> the table.
>>>>
>>>
>>> I agree, but as you say that's an issue with the SIP Header Field 
>>> Parameters registry in general. I started to go down the path of fixing the 
>>> registry as a whole, but I think I'd rather leave that for 3261bis to 
>>> tackle (sometime before the heat death of the universe).
>>
>> Yes, the registry is a mess, largely due to the rather whimsical preferences 
>> -- which would vary from year to year -- of the SIP community regarding 
>> which fields needed a registry and which did not. It's grown to be the way 
>> it is somewhat organically, and I agree that the overall SIP registry is 
>> something of a mess.
>>
>> I'm not sure we need to wait for a 3261bis to fix things, as I doubt we 
>> could find someone with the fortitude to take on an effort that large. It 
>> might be worth finding someone to work on a "registry overhaul" document 
>> that attempts to make the whole thing more coherent. I'll be keeping this in 
>> mind as a potential SIPCORE item.
>>
>> /a
> 
> +1
> 
> More importantly, I don't think this draft could reasonably take on cleaning 
> up that mess. 
> 
> 

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