[Sip] Early media as an endpoint application

[Henry Sinnreich <hsinnrei at adobe.com>]

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" <dean.willis at softarmor.com> 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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