RE: [EME] EME charter

Melinda Shore wrote:

>For example,
>relays are, unfortunately, increasingly common in VoIP networks
>and while they're effectively transparent to the application
>peers they are being addressed directly.

VoIP back to back user agents (B2BUA) are anything but transparent and
they will break SIP routing and security completely. B2BUA will most
likely also break SIP endpoint applications that they don't understand.

It took quite a number of years to develop ICE for NAT traversal, so now
how many hears will it take to traverse B2BUA?

The is the worst form of job security :-)

Thanks, Henry

-----Original Message-----
From: Melinda Shore [mailto:mshore@cisco.com] 
Sent: Monday, November 13, 2006 9:59 AM
To: Fergie
Cc: eme@irtf.org
Subject: Re: [EME] EME charter

On 11/13/06 1:10 AM, "Fergie" <fergdawg@netzero.net> wrote:
> Having said that, I would tend to think that endpoints can defined
> as the source (originator) & destination addresses in any IP
> packet.

One layer's endpoint is another layer's middlebox.  For example,
relays are, unfortunately, increasingly common in VoIP networks
and while they're effectively transparent to the application
peers they are being addressed directly.

Melinda

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