Re: [Sip] Early media as an endpoint application

[Henry Sinnreich <[e-mail]>]

> I would prefer the phrase "media before Answer". In SIP, translates to
> media before 200 OK.

Yes, "Media Before Answer" would be a more accurate description.
It would also help to make the distinction with existing Early Media
definitions and/or interpretations.

Henry


On 8/21/08 1:09 PM, "DOLLY, MARTIN C, ATTLABS" <[e-mail]> wrote:

> I would prefer the phrase "media before Answer". In SIP, translates to
> media before 200 OK.
> 
> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]] On Behalf Of
> Henry Sinnreich
> Sent: Thursday, August 21, 2008 11:17 AM
> To: Dean Willis; Dan Wing
> Cc: [e-mail]; [e-mail]
> Subject: [Sip] Early media as an endpoint application
> 
> I have changed the Subject title
> 
> Early media should just be an endpoint application when the SIP endpoint
> is
> a PSTN gateway. This seems logical, or does it?
> 
> ===================
> 
> I agree that early media has no role in pure/clean IP-IP communications,
> but
> only when connecting to the PSTN. Should early media support not be
> localized in the respective SIP endpoints, that is in the SIP-PSTN
> gateway?
> 
> Support of early media in the SIP-PSTN gateway would resolve this issue.
> 
> What do you think?
> 
> Henry
> 
> 
> On 8/20/08 5:40 PM, "Dean Willis" <[e-mail]> wrote:
> 
>> 
>> On Aug 20, 2008, at 2:22 PM, Dan Wing wrote:
>>> 
>>> There are some apparently-legitimate uses of early media,
>> 
>> No there aren't, IMHO.
>> 
>>> at least
>>> from the perspective of some network operators, to deliver things
>>> like "Than you for using <operator>", advertisements, colorful
>>> ringback
>>> (music as ringback), and so on.  Brian did a great write-up of many
>>> scenarios in the (now expired)
>>> draft-stucker-sipping-early-media-coping-03.txt.
>> 
>> Well, if you caveat it that way., then your statement is correct. One
>> might reasonably ask if those operators don't simply have their
>> requirements confused.
>> 
>> My take, however, is that "early media" is a cop-out for coping with a
>> fundamentally broken PSTN-interworking model, coupled with Bad Ideas
>> about charging based on signaling rather than content.
>> 
>> But like forking, this genie has left the bottle, and we have to deal
>> with the consequences of that failing as long as we have SIP 2.0.
>> 
>> ---
>> Dean
>> 
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