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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session PEERing for Multimedia INTerconnect Working Group of the IETF.


	Title           : SPEERMINT Peering Architecture
	Author(s)       : R. Penno, S. Khan
	Filename        : draft-ietf-speermint-architecture-08.txt
	Pages           : 18
	Date            : 2009-03-02

This document defines the SPEERMINT peering architecture, its functional 
components and peering interface functions. It also describes the steps
taken 
to establish a session between two peering domains in the context of the 
functions defined.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-speermint-architecture-08.txt

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From jason_livingood@cable.comcast.com  Wed Mar  4 09:35:04 2009
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>> 7. Section 5.1.2.3 SIP Redirect Server
>> I am not at all certain this section adds value.  I would delete it.
> 
> I think the reason why this is in here is that a SIP Redirect is a very
> viable alternative to ENUM.  One of the challenges this and several
> Speermint documents face is placing too much emphasis on the use of ENUM
> in peering.  While I believe this is a very efficient way for SSPs to
> peer, not all SSPs are ready or plan to utilize ENUM.  What is a better
> recommendation for documenting a very valid approach to peering simply
> by using the constructs in SIP?
> 
> [jmce] Fair enough - I'm happy to leave it.  My hesitation was that the
> trick is how you set up the magic database that the SIP Redirect Server
> uses to find the route.  But I guess you could say exactly the same
> about the magic used to populate ENUM.  So I'm fine with it as is.

In my experience, the SIP Redirect Server is often doing the lookup to an
ENUM database anyway...  But, importantly, not all VoIP servers (using
"servers" very generally) have an ENUM client.  Thus, the only way to really
peer effectively is to send the call to the SIP Redirect Server, which can
then consult either ENUM and/or some table of records to make a decision on
how to route the session.

Jason


From D.Malas@cablelabs.com  Wed Mar  4 15:37:18 2009
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All,

We have submitted a new draft beginning a process for defining a SIP
interconnect guideline for peering.   Of the operators I have spoken with
regarding their experiences with peering, SIP interworking is the most
challenging process to work through.  Establishing a guideline will be a
fundamental step in enabling SSPs to peer quickly, efficiently, and
dynamically.

A New Internet-Draft is available from the on-line Internet-Drafts
directories.

    Title           : draft-hancock-sip-interconnect-guidelines-00
    Author(s)       : D. Hancock, D. Malas
    Filename        : draft-hancock-sip-interconnect-guidelines-00.txt
    Pages           : 25
    Date            : 2009-03-04

As Session Initiation Protocol (SIP) peering becomes more widely
accepted by service providers the need to define an interconnect
guideline becomes of greater value.  This document takes into
consideration the SIP and commonly used SIP extensions, and it
defines a fundamental set of requirements for SIP Service Providers
(SSPs) to implement within their signaling functions (SFs) or
Signaling Path Border Elements (SBEs) for peering.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect-guideline
s-00.txt

Regards,

Daryl

-----------------
Daryl Malas
CableLabs
(o) +1 303 661 3302
(f) +1 303 661 9199
mailto:d.malas@cablelabs.com



--B_3319029472_9411446
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<HTML>
<HEAD>
<TITLE>[Speermint] New Draft: SIP Interconnect Guideline</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>All,<BR>
<BR>
We have submitted a new draft beginning a process for defining a SIP interc=
onnect guideline for peering. &nbsp;&nbsp;Of the operators I have spoken wit=
h regarding their experiences with peering, SIP interworking is the most cha=
llenging process to work through. &nbsp;Establishing a guideline will be a f=
undamental step in enabling SSPs to peer quickly, efficiently, and dynamical=
ly.<BR>
<BR>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<BR>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Title &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;: draft-hancock-sip-interconnect-guidelines-00<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Author(s) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: D. =
Hancock, D. Malas<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Filename &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
: draft-hancock-sip-interconnect-guidelines-00.txt<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Pages &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;: 25<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Date &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;: 2009-03-04<BR>
<BR>
As Session Initiation Protocol (SIP) peering becomes more widely<BR>
accepted by service providers the need to define an interconnect<BR>
guideline becomes of greater value. &nbsp;This document takes into<BR>
consideration the SIP and commonly used SIP extensions, and it<BR>
defines a fundamental set of requirements for SIP Service Providers<BR>
(SSPs) to implement within their signaling functions (SFs) or<BR>
Signaling Path Border Elements (SBEs) for peering.<BR>
<BR>
A URL for this Internet-Draft is:<BR>
<a href=3D"http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect=
-guidelines-00.txt">http://www.ietf.org/internet-drafts/draft-hancock-sip-in=
terconnect-guidelines-00.txt</a><BR>
<BR>
Regards,<BR>
<BR>
Daryl<BR>
</SPAN></FONT><FONT SIZE=3D"2"><FONT FACE=3D"Consolas, Courier New, Courier"><S=
PAN STYLE=3D'font-size:10pt'><BR>
-----------------<BR>
Daryl Malas<BR>
CableLabs<BR>
(o) +1 303 661 3302<BR>
(f) +1 303 661 9199<BR>
<FONT COLOR=3D"#0000FF"><U><a href=3D"mailto:d.malas@cablelabs.com">mailto:d.ma=
las@cablelabs.com</a><BR>
</U></FONT></SPAN></FONT></FONT><FONT FACE=3D"Calibri, Verdana, Helvetica, Ar=
ial"><SPAN STYLE=3D'font-size:11pt'><BR>
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From john.elwell@siemens.com  Thu Mar  5 06:36:41 2009
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From: "Elwell, John" <john.elwell@siemens.com>
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Daryl, David,
=20
I like the initiative, and I was wondering whether it could apply
between two enterprise networks as well as between two service provider
networks. However, I think it might be too restrictive (e.g., limiting
just to a single audio medium).
=20
One particular concern is that it is specified in terms of "networks",
whatever that might mean, whereas endpoints (SIP UAs) will be
responsible for many aspects, e.g., anything to do with SDP, provision
of local ringback tone, etc..
=20
One item of interest is section 5.1.2.3 "Early media with multiple
terminating endpoints". The correct way of achieving this in SIP is the
third method (5.1.2.3.3), i.e., using multiple early dialogs. Another
way, not mentioned here, is to use redirection as a means of creating a
new dialog. I am concerned about the media anchor method (5.1.2.3.1),
because that would constrain the call to using whatever attributes
(e.g., codec) are negotiated between the calling UA and the anchor, and
would deny the possibility of using a superior codec end-to-end if
supported by both UAs. Also it would prevent end-to-end security using
security descriptions (say), since the security context negotiated with
the anchor would be used throughout the call. The early answer method
(5.1.2.3.2) is likely to mislead the calling side as to what is actually
happening.
=20
There seems to be a whole lot missing in the area of transport,
authentication, etc..
=20
John
=20


________________________________

	From: speermint-bounces@ietf.org
[mailto:speermint-bounces@ietf.org] On Behalf Of Daryl Malas
	Sent: 04 March 2009 23:38
	To: speermint@ietf.org
	Cc: David Hancock
	Subject: [Speermint] New Draft: SIP Interconnect Guideline
=09
=09
	All,
=09
	We have submitted a new draft beginning a process for defining a
SIP interconnect guideline for peering.   Of the operators I have spoken
with regarding their experiences with peering, SIP interworking is the
most challenging process to work through.  Establishing a guideline will
be a fundamental step in enabling SSPs to peer quickly, efficiently, and
dynamically.
=09
	A New Internet-Draft is available from the on-line
Internet-Drafts directories.
=09
	    Title           :
draft-hancock-sip-interconnect-guidelines-00
	    Author(s)       : D. Hancock, D. Malas
	    Filename        :
draft-hancock-sip-interconnect-guidelines-00.txt
	    Pages           : 25
	    Date            : 2009-03-04
=09
	As Session Initiation Protocol (SIP) peering becomes more widely
	accepted by service providers the need to define an interconnect
	guideline becomes of greater value.  This document takes into
	consideration the SIP and commonly used SIP extensions, and it
	defines a fundamental set of requirements for SIP Service
Providers
	(SSPs) to implement within their signaling functions (SFs) or
	Signaling Path Border Elements (SBEs) for peering.
=09
	A URL for this Internet-Draft is:
=09
http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect-guide
lines-00.txt
=09
	Regards,
=09
	Daryl
=09
	-----------------
	Daryl Malas
	CableLabs
	(o) +1 303 661 3302
	(f) +1 303 661 9199
	mailto:d.malas@cablelabs.com
=09
=09


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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session PEERing for Multimedia INTerconnect Working Group of the IETF.


	Title           : Use of DNS SRV and NAPTR Records for SPEERMINT
	Author(s)       : T. Creighton, J. Livingood
	Filename        : draft-ietf-speermint-srv-naptr-use-05.txt
	Pages           : 13
	Date            : 2009-03-05

The objective of this document is to specify the Best Current
Practice (BCP) adopted by a service provider or other organization
providing multimedia communication services such as Voice over
Internet Protocol(VoIP) in order to locate another service provider
to peer with in the context of Session PEERing for Multimedia
INTerconnect.  This document attempts to fill the gaps in information
from RFC 3261, RFC 3263, and other documents, in order to more assist
service providers in more easily performing SIP peering.

[EDITORIAL NOTE: XREF ERROR GENERATED IN ABSTRACT, XREFS REMOVED]

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From jason_livingood@cable.comcast.com  Thu Mar  5 08:34:22 2009
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I have posted a new version.  This captures several open items, all
identified with the text [EDITORIAL NOTE: <wg question here>].  Please take
a look at these when you have a chance and provide any feedback.

Thanks
Jason


A new version of I-D, draft-ietf-speermint-srv-naptr-use-05.txt has been
successfuly submitted by Jason Livingood and posted to the IETF repository.

Filename:        draft-ietf-speermint-srv-naptr-use
Revision:        05
Title:           Use of DNS SRV and NAPTR Records for SPEERMINT
Creation_date:   2009-03-04
WG ID:           speermint
Number_of_pages: 13

Abstract:
The objective of this document is to specify the Best Current
Practice (BCP) adopted by a service provider or other organization
providing multimedia communication services such as Voice over
Internet Protocol(VoIP) in order to locate another service provider
to peer with in the context of Session PEERing for Multimedia
INTerconnect.  This document attempts to fill the gaps in information
from RFC 3261, RFC 3263, and other documents, in order to more assist
service providers in more easily performing SIP peering.


--B_3319097662_2553766
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/TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>I have posted a new version. &nbsp;This captures several open items, all i=
dentified with the text [EDITORIAL NOTE: &lt;wg question here&gt;]. &nbsp;Pl=
ease take a look at these when you have a chance and provide any feedback.<B=
R>
<BR>
Thanks<BR>
Jason<BR>
<BR>
<BR>
A new version of I-D, draft-ietf-speermint-srv-naptr-use-05.txt has been su=
ccessfuly submitted by Jason Livingood and posted to the IETF repository.<BR=
>
<BR>
Filename: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;draft-ietf-speermint-sr=
v-naptr-use<BR>
Revision: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;05<BR>
Title: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Use of D=
NS SRV and NAPTR Records for SPEERMINT<BR>
Creation_date: &nbsp;&nbsp;2009-03-04<BR>
WG ID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speermin=
t<BR>
Number_of_pages: 13<BR>
<BR>
Abstract:<BR>
The objective of this document is to specify the Best Current<BR>
Practice (BCP) adopted by a service provider or other organization<BR>
providing multimedia communication services such as Voice over<BR>
Internet Protocol(VoIP) in order to locate another service provider<BR>
to peer with in the context of Session PEERing for Multimedia<BR>
INTerconnect. &nbsp;This document attempts to fill the gaps in information<=
BR>
from RFC 3261, RFC 3263, and other documents, in order to more assist<BR>
service providers in more easily performing SIP peering.<BR>
</SPAN></FONT>
</BODY>
</HTML>


--B_3319097662_2553766--


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References: <C5D45EE0.270E%d.malas@cablelabs.com>
From: "PFAUTZ, PENN L, ATTCORP" <ppfautz@att.com>
To: "Daryl Malas" <d.malas@cablelabs.com>, <speermint@ietf.org>
Cc: David Hancock <D.Hancock@cablelabs.com>
Subject: Re: [Speermint] New Draft: SIP Interconnect Guideline
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Daryl:
David:
=20
I took a quick look at the I-D and want to be sure I understand what's
being said about  called user identification. In Section 4.2.1 is the
identification of the rn in  the case of a ported number just for sub
subsequent interworking back to SS7/circuit switched networks or
something else? I tend to think of ENUM-based routing mechanisms as
being portability corrected to begin with so number portability info
should only be required where subsequent interworking has to take place.

 thanks,
=20
Penn Pfautz
AT&T Access Management
+1-732-420-4962
=20

________________________________

From: speermint-bounces@ietf.org [mailto:speermint-bounces@ietf.org] On
Behalf Of Daryl Malas
Sent: Wednesday, March 04, 2009 6:38 PM
To: speermint@ietf.org
Cc: David Hancock
Subject: [Speermint] New Draft: SIP Interconnect Guideline


All,

We have submitted a new draft beginning a process for defining a SIP
interconnect guideline for peering.   Of the operators I have spoken
with regarding their experiences with peering, SIP interworking is the
most challenging process to work through.  Establishing a guideline will
be a fundamental step in enabling SSPs to peer quickly, efficiently, and
dynamically.

A New Internet-Draft is available from the on-line Internet-Drafts
directories.

    Title           : draft-hancock-sip-interconnect-guidelines-00
    Author(s)       : D. Hancock, D. Malas
    Filename        : draft-hancock-sip-interconnect-guidelines-00.txt
    Pages           : 25
    Date            : 2009-03-04

As Session Initiation Protocol (SIP) peering becomes more widely
accepted by service providers the need to define an interconnect
guideline becomes of greater value.  This document takes into
consideration the SIP and commonly used SIP extensions, and it
defines a fundamental set of requirements for SIP Service Providers
(SSPs) to implement within their signaling functions (SFs) or
Signaling Path Border Elements (SBEs) for peering.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect-guide
lines-00.txt

Regards,

Daryl

-----------------
Daryl Malas
CableLabs
(o) +1 303 661 3302
(f) +1 303 661 9199
mailto:d.malas@cablelabs.com



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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>[Speermint] New Draft: SIP Interconnect =
Guideline</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Dus-ascii">
<META content=3D"MSHTML 6.00.2900.3492" name=3DGENERATOR></HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D967414016-05032009><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Daryl:</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D967414016-05032009><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>David:</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN =
class=3D967414016-05032009></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D967414016-05032009><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>I took a quick look at the I-D and want to be =
sure I=20
understand what's being said about&nbsp; called user identification. In =
Section=20
4.2.1 is the identification of the rn in&nbsp; the case of a ported =
number just=20
for sub subsequent interworking back to SS7/circuit switched networks or =

something else? I tend to think of ENUM-based routing mechanisms as =
being=20
portability corrected to begin with so number portability info should =
only be=20
required where subsequent interworking has to take place. =
</FONT></SPAN></DIV>
<DIV><SPAN class=3D967414016-05032009><FONT face=3DArial color=3D#0000ff =

size=3D2>&nbsp;thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D967414016-05032009><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Penn Pfautz</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>AT&amp;T Access =
Management</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial =
size=3D2>+1-732-420-4962</FONT></DIV>
<DIV>&nbsp;</DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> speermint-bounces@ietf.org=20
[mailto:speermint-bounces@ietf.org] <B>On Behalf Of </B>Daryl=20
Malas<BR><B>Sent:</B> Wednesday, March 04, 2009 6:38 PM<BR><B>To:</B>=20
speermint@ietf.org<BR><B>Cc:</B> David Hancock<BR><B>Subject:</B> =
[Speermint]=20
New Draft: SIP Interconnect Guideline<BR></FONT><BR></DIV>
<DIV></DIV><FONT face=3D"Calibri, Verdana, Helvetica, Arial"><SPAN=20
style=3D"FONT-SIZE: 11pt">All,<BR><BR>We have submitted a new draft =
beginning a=20
process for defining a SIP interconnect guideline for peering. =
&nbsp;&nbsp;Of=20
the operators I have spoken with regarding their experiences with =
peering, SIP=20
interworking is the most challenging process to work through. =
&nbsp;Establishing=20
a guideline will be a fundamental step in enabling SSPs to peer quickly, =

efficiently, and dynamically.<BR><BR>A New Internet-Draft is available =
from the=20
on-line Internet-Drafts =
directories.<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;Title=20
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:=20
draft-hancock-sip-interconnect-guidelines-00<BR>&nbsp;&nbsp;&nbsp;&nbsp;A=
uthor(s)=20
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: D. Hancock, D.=20
Malas<BR>&nbsp;&nbsp;&nbsp;&nbsp;Filename=20
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:=20
draft-hancock-sip-interconnect-guidelines-00.txt<BR>&nbsp;&nbsp;&nbsp;&nb=
sp;Pages=20
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:=20
25<BR>&nbsp;&nbsp;&nbsp;&nbsp;Date=20
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:=20
2009-03-04<BR><BR>As Session Initiation Protocol (SIP) peering becomes =
more=20
widely<BR>accepted by service providers the need to define an=20
interconnect<BR>guideline becomes of greater value. &nbsp;This document =
takes=20
into<BR>consideration the SIP and commonly used SIP extensions, and=20
it<BR>defines a fundamental set of requirements for SIP Service=20
Providers<BR>(SSPs) to implement within their signaling functions (SFs)=20
or<BR>Signaling Path Border Elements (SBEs) for peering.<BR><BR>A URL =
for this=20
Internet-Draft is:<BR><A=20
href=3D"http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnec=
t-guidelines-00.txt">http://www.ietf.org/internet-drafts/draft-hancock-si=
p-interconnect-guidelines-00.txt</A><BR><BR>Regards,<BR><BR>Daryl<BR></SP=
AN></FONT><FONT=20
size=3D2><FONT face=3D"Consolas, Courier New, Courier"><SPAN=20
style=3D"FONT-SIZE: 10pt"><BR>-----------------<BR>Daryl =
Malas<BR>CableLabs<BR>(o)=20
+1 303 661 3302<BR>(f) +1 303 661 9199<BR><FONT color=3D#0000ff><U><A=20
href=3D"mailto:d.malas@cablelabs.com">mailto:d.malas@cablelabs.com</A><BR=
></U></FONT></SPAN></FONT></FONT><FONT=20
face=3D"Calibri, Verdana, Helvetica, Arial"><SPAN=20
style=3D"FONT-SIZE: 11pt"><BR></SPAN></FONT></BODY></HTML>

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From jason_livingood@cable.comcast.com  Thu Mar  5 09:53:47 2009
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Date: Thu, 05 Mar 2009 12:53:22 -0500
From: "Livingood, Jason" <Jason_Livingood@cable.comcast.com>
To: Daryl Malas <d.malas@cablelabs.com>, <speermint@ietf.org>
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Thread-Topic: [Speermint]  New Draft: SIP Interconnect Guideline
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Subject: Re: [Speermint] New Draft: SIP Interconnect Guideline
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We=B9re planning to set aside time on our agenda to have the authors present
this draft.  We will also be gauging WG interest in making this an official
WG item.

Thanks
Jason


On 3/4/09 6:37 PM, "Daryl Malas" <d.malas@cablelabs.com> wrote:

> All,
>=20
> We have submitted a new draft beginning a process for defining a SIP
> interconnect guideline for peering.   Of the operators I have spoken with
> regarding their experiences with peering, SIP interworking is the most
> challenging process to work through.  Establishing a guideline will be a
> fundamental step in enabling SSPs to peer quickly, efficiently, and
> dynamically.
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>=20
>     Title           : draft-hancock-sip-interconnect-guidelines-00
>     Author(s)       : D. Hancock, D. Malas
>     Filename        : draft-hancock-sip-interconnect-guidelines-00.txt
>     Pages           : 25
>     Date            : 2009-03-04
>=20
> As Session Initiation Protocol (SIP) peering becomes more widely
> accepted by service providers the need to define an interconnect
> guideline becomes of greater value.  This document takes into
> consideration the SIP and commonly used SIP extensions, and it
> defines a fundamental set of requirements for SIP Service Providers
> (SSPs) to implement within their signaling functions (SFs) or
> Signaling Path Border Elements (SBEs) for peering.
>=20
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect-guidel=
ines-
> 00.txt
>=20
> Regards,
>=20
> Daryl
>=20
> -----------------
> Daryl Malas
> CableLabs
> (o) +1 303 661 3302
> (f) +1 303 661 9199
> mailto:d.malas@cablelabs.com
>=20
>=20
>=20
> _______________________________________________
> Speermint mailing list
> Speermint@ietf.org
> https://www.ietf.org/mailman/listinfo/speermint


--B_3319102402_2880413
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	charset="ISO-8859-1"
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<HTML>
<HEAD>
<TITLE>Re: [Speermint] &nbsp;New Draft: SIP Interconnect Guideline</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>We&#8217;re planning to set aside time on our agenda to have the authors p=
resent this draft. &nbsp;We will also be gauging WG interest in making this =
an official WG item.<BR>
<BR>
Thanks<BR>
Jason<BR>
<BR>
<BR>
On 3/4/09 6:37 PM, &quot;Daryl Malas&quot; &lt;<a href=3D"d.malas@cablelabs.c=
om">d.malas@cablelabs.com</a>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><=
SPAN STYLE=3D'font-size:11pt'>All,<BR>
<BR>
We have submitted a new draft beginning a process for defining a SIP interc=
onnect guideline for peering. &nbsp;&nbsp;Of the operators I have spoken wit=
h regarding their experiences with peering, SIP interworking is the most cha=
llenging process to work through. &nbsp;Establishing a guideline will be a f=
undamental step in enabling SSPs to peer quickly, efficiently, and dynamical=
ly.<BR>
<BR>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<BR>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Title &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;: draft-hancock-sip-interconnect-guidelines-00<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Author(s) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: D. =
Hancock, D. Malas<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Filename &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
: draft-hancock-sip-interconnect-guidelines-00.txt<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Pages &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;: 25<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Date &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;: 2009-03-04<BR>
<BR>
As Session Initiation Protocol (SIP) peering becomes more widely<BR>
accepted by service providers the need to define an interconnect<BR>
guideline becomes of greater value. &nbsp;This document takes into<BR>
consideration the SIP and commonly used SIP extensions, and it<BR>
defines a fundamental set of requirements for SIP Service Providers<BR>
(SSPs) to implement within their signaling functions (SFs) or<BR>
Signaling Path Border Elements (SBEs) for peering.<BR>
<BR>
A URL for this Internet-Draft is:<BR>
<a href=3D"http://www.ietf.org/internet-drafts/draft-hancock-sip-interconnect=
-guidelines-00.txt">http://www.ietf.org/internet-drafts/draft-hancock-sip-in=
terconnect-guidelines-00.txt</a><BR>
<BR>
Regards,<BR>
<BR>
Daryl<BR>
</SPAN></FONT><FONT SIZE=3D"2"><FONT FACE=3D"Consolas, Courier New, Courier"><S=
PAN STYLE=3D'font-size:10pt'><BR>
-----------------<BR>
Daryl Malas<BR>
CableLabs<BR>
(o) +1 303 661 3302<BR>
(f) +1 303 661 9199<BR>
<FONT COLOR=3D"#0000FF"><U><a href=3D"mailto:d.malas@cablelabs.com">mailto:d.ma=
las@cablelabs.com</a><BR>
</U></FONT></SPAN></FONT></FONT><FONT FACE=3D"Calibri, Verdana, Helvetica, Ar=
ial"><SPAN STYLE=3D'font-size:11pt'><BR>
<BR>
<HR ALIGN=3DCENTER SIZE=3D"3" WIDTH=3D"95%"></SPAN></FONT><FONT SIZE=3D"2"><FONT FA=
CE=3D"Consolas, Courier New, Courier"><SPAN STYLE=3D'font-size:10pt'>___________=
____________________________________<BR>
Speermint mailing list<BR>
<a href=3D"Speermint@ietf.org">Speermint@ietf.org</a><BR>
<a href=3D"https://www.ietf.org/mailman/listinfo/speermint">https://www.ietf.=
org/mailman/listinfo/speermint</a><BR>
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From john.elwell@siemens.com  Fri Mar  6 09:06:41 2009
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Date: Fri, 06 Mar 2009 17:07:07 +0000
From: "Elwell, John" <john.elwell@siemens.com>
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Subject: Re: [Speermint] New Draft: SIP Interconnect Guideline
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=20

> -----Original Message-----
> From: David Hancock [mailto:D.Hancock@CableLabs.com]=20
> Sent: 05 March 2009 21:29
> To: Elwell, John; Daryl Malas; speermint@ietf.org
> Subject: RE: [Speermint] New Draft: SIP Interconnect Guideline
>=20
> Thanks for the comments, John.
>=20
> Additional comments inline below.
>=20
> David
>=20
> > -----Original Message-----
> > From: Elwell, John [mailto:john.elwell@siemens.com]
> > Sent: Thursday, March 05, 2009 7:37 AM
> > To: Daryl Malas; speermint@ietf.org
> > Cc: David Hancock
> > Subject: RE: [Speermint] New Draft: SIP Interconnect Guideline
> >=20
> > Daryl, David,
> >=20
> > I like the initiative, and I was wondering whether it could apply
> > between two enterprise networks as well as between two service
> provider
> > networks. However, I think it might be too restrictive=20
> (e.g., limiting
> > just to a single audio medium).
>=20
> [dch] I think the scope of this work is open to discussion.=20
> The idea was
> to start smaller rather than larger in terms of scope; provide
> guidelines for basic voice services as a doable first step, and then
> layer on more advanced capabilities as a future activity.
>=20
> >=20
> > One particular concern is that it is specified in terms of=20
> "networks",
> > whatever that might mean, whereas endpoints (SIP UAs) will be
> > responsible for many aspects, e.g., anything to do with=20
> SDP, provision
> > of local ringback tone, etc..
>=20
> [dch] Our intention was to use the terminology and=20
> architecture already
> defined for speermint. Although I notice that
> draft-ietf-speermint-terminology doesn't define the term "networks" so
> we may need to tighten up the terms in our draft to ensure there's no
> ambiguity in what we're talking about. As far as what entities must
> comply with these guidelines, I've been thinking of it like=20
> this - these
> guidelines define the SIP signaling procedures as they appear on the
> interface between two peering networks. In other words, this draft
> places requirements on a peer network (using speermint terminology).
> Whether this requirements are met by a SIP endpoint served by that
> network, or an SBE (speermint term) at the peer interface point, is
> out-of-scope.=20
>=20
> >=20
> > One item of interest is section 5.1.2.3 "Early media with multiple
> > terminating endpoints". The correct way of achieving this in SIP is
> the
> > third method (5.1.2.3.3), i.e., using multiple early=20
> dialogs. Another
> > way, not mentioned here, is to use redirection as a means=20
> of creating
> a
> > new dialog. I am concerned about the media anchor method=20
> (5.1.2.3.1),
> > because that would constrain the call to using whatever attributes
> > (e.g., codec) are negotiated between the calling UA and the anchor,
> and
> > would deny the possibility of using a superior codec end-to-end if
> > supported by both UAs. Also it would prevent end-to-end=20
> security using
> > security descriptions (say), since the security context negotiated
> with
> > the anchor would be used throughout the call. The early=20
> answer method
> > (5.1.2.3.2) is likely to mislead the calling side as to what is
> actually
> > happening.
>=20
> [dch] I agree that the forking option in 5.1.2.3.3 is the preferred
> option. We added the other media-anchor and early-answer options to
> reflect what's happening in the field today. Should these=20
> other options
> be ruled out as not supported, or allowed as long as operators are
> willing to live with their inherent limitations?=20
>=20
> I hadn't thought of the using redirect in this context, but I agree it
> would work for some use cases (like call-forwarding=20
> no-answer, where the
> called user identity changes). But I think there are some use cases
> where it wouldn't work (where the called user identity=20
> doesn't change);
> e.g., user-A in peer network-1 calls user-b in peer network-2, and
> user-B has solicitor call blocking with pin override. The=20
> call is first
> routed to a media server in network-2 to prompt for and=20
> collect the PIN
> from user A (via a 2-way early-media session), and then delivered to
> user B which sends a 180 response with no SDP (on a new dialog) to
> instruct user-A's endpoint to provide local ringback tone. Does this
> line up with your understanding?
[JRE] I think it could be made to cover that situation too, by including
some sort of cookie in the 3xx contact URI or an embedded Route header
field, so that the new INVITE request can be linked to state in the
downstream SP.

John


>=20
> >=20
> > There seems to be a whole lot missing in the area of transport,
> > authentication, etc..
>=20
> [dch] Agreed, am open to expanding the scope of this initial draft to
> cover other common interworking issues, as long we're pragmatic about
> what can be accomplished in a reasonable timeframe.
>=20
> >=20
> > John
> >=20
> >=20
> >=20
> > ________________________________
> >=20
> > 	From: speermint-bounces@ietf.org
> > [mailto:speermint-bounces@ietf.org] On Behalf Of Daryl Malas
> > 	Sent: 04 March 2009 23:38
> > 	To: speermint@ietf.org
> > 	Cc: David Hancock
> > 	Subject: [Speermint] New Draft: SIP Interconnect Guideline
> >=20
> >=20
> > 	All,
> >=20
> > 	We have submitted a new draft beginning a process for defining a
> > SIP interconnect guideline for peering.   Of the operators I have
> spoken
> > with regarding their experiences with peering, SIP=20
> interworking is the
> > most challenging process to work through.  Establishing a guideline
> will
> > be a fundamental step in enabling SSPs to peer quickly, efficiently,
> and
> > dynamically.
> >=20
> > 	A New Internet-Draft is available from the on-line
> > Internet-Drafts directories.
> >=20
> > 	    Title           :
> > draft-hancock-sip-interconnect-guidelines-00
> > 	    Author(s)       : D. Hancock, D. Malas
> > 	    Filename        :
> > draft-hancock-sip-interconnect-guidelines-00.txt
> > 	    Pages           : 25
> > 	    Date            : 2009-03-04
> >=20
> > 	As Session Initiation Protocol (SIP) peering becomes more widely
> > 	accepted by service providers the need to define an interconnect
> > 	guideline becomes of greater value.  This document takes into
> > 	consideration the SIP and commonly used SIP extensions, and it
> > 	defines a fundamental set of requirements for SIP Service
> > Providers
> > 	(SSPs) to implement within their signaling functions (SFs) or
> > 	Signaling Path Border Elements (SBEs) for peering.
> >=20
> > 	A URL for this Internet-Draft is:
> >=20
> >
> http://www.ietf.org/internet-drafts/draft-hancock-sip-intercon
> nect-guide
> > lines-00.txt
> >=20
> > 	Regards,
> >=20
> > 	Daryl
> >=20
> > 	-----------------
> > 	Daryl Malas
> > 	CableLabs
> > 	(o) +1 303 661 3302
> > 	(f) +1 303 661 9199
> > 	mailto:d.malas@cablelabs.com
> >=20
> >=20
>=20
>=20

From HKaplan@acmepacket.com  Sun Mar  8 23:31:05 2009
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From: Hadriel Kaplan <HKaplan@acmepacket.com>
To: Daryl Malas <d.malas@cablelabs.com>, "speermint@ietf.org" <speermint@ietf.org>
Date: Mon, 9 Mar 2009 02:31:34 -0400
Thread-Topic: [Speermint]  New Draft: SIP Interconnect Guideline
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Subject: Re: [Speermint] New Draft: SIP Interconnect Guideline
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Howdy,
I read the draft and I have some comments (oh, and I support the idea of th=
is being a WG item, BTW):

1) Section 4.1 on Extension Negotiation - the wording here is weird - a Sup=
ported header lists the extensions the specific calling UA can do for a par=
ticular request/dialog, not the whole "network".  For example one should ne=
ver add a 100rel option tag (for PRACK) to a SIP request unless the UAC act=
ually inserted it - even if both operators wish to use PRACK.  This is an i=
mportant distinction because using extensions when the UAC cannot support i=
t causes more interop problems than it solves, imo.

2) Same goes for the Allow header statement in section 4.1 - the peering pa=
rtner may reduce the set allowed if the profile doesn't support it (e.g., R=
EGISTER), but the list itself must not contain method names the UAC did not=
 include itself.  Otherwise you'd be inserting UPDATE, for example, even if=
 the UAC couldn't do UPDATE, and that would be bad mojo.

3) Section 4.2 - "SIP:" should be lower-case.  You should add in here that =
visual-separators MUST NOT be included. (they cause all sorts of issues, an=
d were frankly a protocol layer violation to begin with, imho)

4) Section 4.2.1 - it says the receiving provider must retrieve the LNP dat=
a based on the npdi and rn parameters in the request-uri.  But as far as I =
know the whole point of the previous provider inserting those parameters wa=
s to indicate it had already retrieved the LNP data (which is why it insert=
ed "npdi") and if it found the number was ported it inserted the routing nu=
mber (thus the "rn").  Or maybe you mean the receiving provider must use th=
e parameters in the request-uri as the LNP data?  I read "retrieve" and ass=
umed it meant "go get from the LNP/NPAC database", vs. "get from request-ur=
i".

5) Section 4.2.1 - it says if the rn param is a 10-digit national number (n=
o "+"), then assume NANP.  That sounds sorta NANP-centric, no?  I know in p=
ractice this happens within the NANP, but if the peering is in other parts =
of the world or between NANP and others, it would be confusing because I th=
ink/assume that NANP numbers can actually conflict with other nations' numb=
ers.  I think it's just better to mandate adding a leading +[country-code] =
if the number is not already in the E.164 format before leaving your domain=
.

6) Section 5.1.1 - one media line??  Why?  I mean doesn't this severely lim=
it the providers?  How about that a provider MAY support only accepting one=
 media line, by setting all other ones to zero port in the SDP.  We have to=
 support offering multiple media, if for no other reason than being able to=
 have text-based calls for audio-impaired folks (TTY).  But also it would b=
e good to have video and BFCP and such usable, if both the other side accep=
ts it.  I know it's caused some interop issues to have more than one, but w=
e'll never get advanced uses if we have to fall back to broken behavior for=
 everything. (and I distinguish between "broken" and "not what the IETF lik=
es" - those two are not synonymous)

7) Section 5.1.2.1 - I know PRACK causes problems... LOTS of problems; but =
you won't be able to connect with some providers if you don't do it.  3GPP,=
 for example, loves PRACK. (not surprising really - they love complexity ;)=
  And it does have tangible benefits.  Ugh.  Maybe we should just fix/chang=
e PRACK so it isn't so complicated.  Hmmm.

8) Section 5.1.2.3.1 (man that's a deep nesting of section numbers :) - I a=
m not sure what you mean by this behavior for a Media Anchor.  (and it scar=
es me that I don't, 'cause I build one I think)

9) Section 5.3 - hardly anyone does loop detection using History-Info, as f=
ar as I know, because it doesn't survive very far.  Have you seen that done=
 in practice?

10) Section 5.4.1 - RFC 3603 is a PacketCable-specific header that is not u=
sed outside of PacketCable as far as I'm aware.  Also, the REFER concept is=
 a lot trickier than that in practice, fwiw.  But you're probably getting s=
ick of my comments by this point. :)

11) Section 5.4.2 - I believe, though I could easily be wrong, that the cit=
ed RFC 3725 and 3PCC model in general uses INVITE's with no SDP, which goes=
 against your earlier requirement for INVITE to always have SDP.

12) Section 5.6 - RFC 4235 doesn't always work in practice across provider =
domains, as discussed on the SIP mailing lists recently.  And I don't know =
what it has to do with Callback??

-hadriel

From jason_livingood@cable.comcast.com  Mon Mar  9 10:52:03 2009
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Subject: [Speermint] Draft Agenda for IETF 73 - Comments?
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> This message is in MIME format. Since your mail reader does not understand
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Here is the draft agenda for our session at IETF 73.  Please reply with any
suggested additions or other changes.  If there is new work to discuss, we
can easily shift stuff around to accommodate.

Session PEERing for Multimedia INTerconnect (Speermint)
Tuesday, March 24, 2009, 1520 - 1700 (Afternoon Session II)
Room Name: Imperial B
============================================================================
==================
GENERAL (15 minutes)

1 - Welcome & Introduction to SPEERMINT / Administrivia             5
minutes (1520 - 1525)
2 - Progress Report                                      5 minutes (1525 -
1530)          
3 - Agenda Bashing                                5 minutes (1530 - 1535)

REVIEW CURRENT WG DRAFTS (60 minutes)
4 - FINAL REVIEW --> SPEERMINT Peering Architecture            10 minutes
(1535 - 1545)
    http://tools.ietf.org/html/draft-ietf-speermint-architecture-08
    Adam Uzelac

5 - DETAILED REVIEW --> SPEERMINT Message Flows                20 minutes
(1545 - 1605)
    http://tools.ietf.org/html/draft-ietf-speermint-flows-05
    Hadriel Kaplan

6 - DETAILED REVIEW --> Use of DNS SRV and NAPTR Records for SPEERMINT    15
minutes (1605 - 1620)
    http://tools.ietf.org/html/draft-ietf-speermint-srv-naptr-use-05
    Jason Livingood

7 - SPEERMINT Security Threats and Suggested Countermeasures        15
minutes (1620 - 1635)
    http://tools.ietf.org/id/draft-ietf-speermint-voipthreats-00  (-01
COMING SOON?)
    Saverio Niccolini

REVIEW INDIVIDUAL DRAFTS (20 minutes)

8 - SIP Interconnect Guidelines                        20 minutes (1635 -
1655)
    http://tools.ietf.org/id/draft-hancock-sip-interconnect-guidelines-00
    Daryl Malas and David Hancock

OPEN DISCUSSION (25 minutes)                                           5
minutes (1655 - 1700)
    * Next WGLC drafts
    * New implementer-specific drafts coming?
    * New indivdual drafts coming?
    * Dates for a final interim meeting with the design team?

--B_3319451526_6700344
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<HTML>
<HEAD>
<TITLE>Draft Agenda for IETF 73 - Comments?</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>Here is the draft agenda for our session at IETF 73. &nbsp;Please reply wi=
th any suggested additions or other changes. &nbsp;If there is new work to d=
iscuss, we can easily shift stuff around to accommodate.<BR>
<BR>
Session PEERing for Multimedia INTerconnect (Speermint)<BR>
Tuesday, March 24, 2009, 1520 - 1700 (Afternoon Session II) <BR>
Room Name: Imperial B<BR>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<BR>
GENERAL (15 minutes)<BR>
<BR>
1 - Welcome &amp; Introduction to SPEERMINT / Administrivia &nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1520 - 1=
525)<BR>
2 - Progress Report &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;5 minutes (1525 - 1530) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;<BR>
3 - Agenda Bashing &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1530 - 1535=
) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;<BR>
<BR>
REVIEW CURRENT WG DRAFTS (60 minutes)<BR>
4 - FINAL REVIEW --&gt; SPEERMINT Peering Architecture &nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10 minutes (1535 - 1545)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-architecture-08">http://tools.ietf.org/html/draft-ietf-speermint-archi=
tecture-08</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Adam Uzelac<BR>
<BR>
5 - DETAILED REVIEW --&gt; SPEERMINT Message Flows &nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20 minutes=
 (1545 - 1605)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-flows-05">http://tools.ietf.org/html/draft-ietf-speermint-flows-05</a>=
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Hadriel Kaplan<BR>
<BR>
6 - DETAILED REVIEW --&gt; Use of DNS SRV and NAPTR Records for SPEERMINT &=
nbsp;&nbsp;&nbsp;15 minutes (1605 - 1620)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-srv-naptr-use-05">http://tools.ietf.org/html/draft-ietf-speermint-srv-=
naptr-use-05</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Jason Livingood <BR>
<BR>
7 - SPEERMINT Security Threats and Suggested Countermeasures &nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;15 minutes (1620 - 1635)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/id/draft-ietf-speerm=
int-voipthreats-00">http://tools.ietf.org/id/draft-ietf-speermint-voipthreat=
s-00</a> &nbsp;(-01 COMING SOON?)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Saverio Niccolini<BR>
<BR>
REVIEW INDIVIDUAL DRAFTS (20 minutes)<BR>
<BR>
8 - SIP Interconnect Guidelines &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;20 minutes (1635 - 1655)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/id/draft-hancock-sip=
-interconnect-guidelines-00">http://tools.ietf.org/id/draft-hancock-sip-inte=
rconnect-guidelines-00</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Daryl Malas and David Hancock<BR>
<BR>
OPEN DISCUSSION (25 minutes) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1655 - 1700=
)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* Next WGLC drafts<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* New implementer-specific drafts coming?<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* New indivdual drafts coming?<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* Dates for a final interim meeting with the design=
 team?</SPAN></FONT>
</BODY>
</HTML>


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Subject: [Speermint] I-D Action:draft-ietf-speermint-flows-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session PEERing for Multimedia INTerconnect Working Group of the IETF.


	Title           : SPEERMINT Routing Architecture Message Flows
	Author(s)       : H. Kaplan, et al.
	Filename        : draft-ietf-speermint-flows-05.txt
	Pages           : 26
	Date            : 2009-03-09

This document describes example message flows associated with the 

  SPEERMINT routing architecture, relative to various peering 

  scenarios.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-speermint-flows-05.txt

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Date: Tue, 10 Mar 2009 10:29:55 -0400
From: "Livingood, Jason" <Jason_Livingood@cable.comcast.com>
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Thread-Topic: [Speermint] Draft Agenda for IETF 74 - Comments?
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Updated agenda for the meeting is here:
http://www.ietf.org/proceedings/09mar/agenda/speermint.txt


On 3/9/09 1:52 PM, "Jason Livingood" <jason_livingood@cable.comcast.com>
wrote:

> Here is the draft agenda for our session at IETF 74.  Please reply with any
> suggested additions or other changes.  If there is new work to discuss, we can
> easily shift stuff around to accommodate.
> 
> Session PEERing for Multimedia INTerconnect (Speermint)
> Tuesday, March 24, 2009, 1520 - 1700 (Afternoon Session II)
> Room Name: Imperial B
> ==============================================================================
> ================
> GENERAL (15 minutes)
> 
> 1 - Welcome & Introduction to SPEERMINT / Administrivia             5 minutes
> (1520 - 1525)
> 2 - Progress Report                                      5 minutes (1525 -
> 1530)          
> 3 - Agenda Bashing                                5 minutes (1530 - 1535)
> 
> REVIEW CURRENT WG DRAFTS (60 minutes)
> 4 - FINAL REVIEW --> SPEERMINT Peering Architecture            10 minutes
> (1535 - 1545)
>     http://tools.ietf.org/html/draft-ietf-speermint-architecture-08
>     Adam Uzelac
> 
> 5 - DETAILED REVIEW --> SPEERMINT Message Flows                20 minutes
> (1545 - 1605)
>     http://tools.ietf.org/html/draft-ietf-speermint-flows-05
>     Hadriel Kaplan
> 
> 6 - DETAILED REVIEW --> Use of DNS SRV and NAPTR Records for SPEERMINT    15
> minutes (1605 - 1620)
>     http://tools.ietf.org/html/draft-ietf-speermint-srv-naptr-use-05
>     Jason Livingood
> 
> 7 - SPEERMINT Security Threats and Suggested Countermeasures        15 minutes
> (1620 - 1635)
>     http://tools.ietf.org/id/draft-ietf-speermint-voipthreats-00  (-01 COMING
> SOON?)
>     Saverio Niccolini
> 
> REVIEW INDIVIDUAL DRAFTS (20 minutes)
> 
> 8 - SIP Interconnect Guidelines                        20 minutes (1635 -
> 1655)
>     http://tools.ietf.org/id/draft-hancock-sip-interconnect-guidelines-00
>     Daryl Malas and David Hancock
> 
> OPEN DISCUSSION (25 minutes)                                           5
> minutes (1655 - 1700)
>     * Next WGLC drafts
>     * New implementer-specific drafts coming?
>     * New indivdual drafts coming?
>     * Dates for a final interim meeting with the design team?
> 
> _______________________________________________
> Speermint mailing list
> Speermint@ietf.org
> https://www.ietf.org/mailman/listinfo/speermint



Regards,
Jason
 
Jason Livingood
Executive Director
Internet Systems Engineering
National Engineering & Technical Operations
Comcast Cable Communications
215-286-7813
jason_livingood@cable.comcast.com
 
This message and any attachments to it may contain PROPRIETARY AND
CONFIDENTIAL INFORMATION exclusively for intended recipients. Please DO NOT
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<HTML>
<HEAD>
<TITLE>Re: [Speermint] Draft Agenda for IETF 74 - Comments?</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:11pt=
'>Updated agenda for the meeting is here: <a href=3D"http://www.ietf.org/proce=
edings/09mar/agenda/speermint.txt">http://www.ietf.org/proceedings/09mar/age=
nda/speermint.txt</a><BR>
<BR>
<BR>
On 3/9/09 1:52 PM, &quot;Jason Livingood&quot; &lt;<a href=3D"jason_livingood=
@cable.comcast.com">jason_livingood@cable.comcast.com</a>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><=
SPAN STYLE=3D'font-size:11pt'>Here is the draft agenda for our session at IETF=
 74. &nbsp;Please reply with any suggested additions or other changes. &nbsp=
;If there is new work to discuss, we can easily shift stuff around to accomm=
odate.<BR>
<BR>
Session PEERing for Multimedia INTerconnect (Speermint)<BR>
Tuesday, March 24, 2009, 1520 - 1700 (Afternoon Session II) <BR>
Room Name: Imperial B<BR>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<BR>
GENERAL (15 minutes)<BR>
<BR>
1 - Welcome &amp; Introduction to SPEERMINT / Administrivia &nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1520 - 1=
525)<BR>
2 - Progress Report &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;5 minutes (1525 - 1530) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;<BR>
3 - Agenda Bashing &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1530 - 1535=
) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;<BR>
<BR>
REVIEW CURRENT WG DRAFTS (60 minutes)<BR>
4 - FINAL REVIEW --&gt; SPEERMINT Peering Architecture &nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10 minutes (1535 - 1545)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-architecture-08">http://tools.ietf.org/html/draft-ietf-speermint-archi=
tecture-08</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Adam Uzelac<BR>
<BR>
5 - DETAILED REVIEW --&gt; SPEERMINT Message Flows &nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20 minutes=
 (1545 - 1605)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-flows-05">http://tools.ietf.org/html/draft-ietf-speermint-flows-05</a>=
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Hadriel Kaplan<BR>
<BR>
6 - DETAILED REVIEW --&gt; Use of DNS SRV and NAPTR Records for SPEERMINT &=
nbsp;&nbsp;&nbsp;15 minutes (1605 - 1620)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-spee=
rmint-srv-naptr-use-05">http://tools.ietf.org/html/draft-ietf-speermint-srv-=
naptr-use-05</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Jason Livingood <BR>
<BR>
7 - SPEERMINT Security Threats and Suggested Countermeasures &nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;15 minutes (1620 - 1635)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/id/draft-ietf-speerm=
int-voipthreats-00">http://tools.ietf.org/id/draft-ietf-speermint-voipthreat=
s-00</a> &nbsp;(-01 COMING SOON?)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Saverio Niccolini<BR>
<BR>
REVIEW INDIVIDUAL DRAFTS (20 minutes)<BR>
<BR>
8 - SIP Interconnect Guidelines &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;20 minutes (1635 - 1655)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;<a href=3D"http://tools.ietf.org/id/draft-hancock-sip=
-interconnect-guidelines-00">http://tools.ietf.org/id/draft-hancock-sip-inte=
rconnect-guidelines-00</a><BR>
&nbsp;&nbsp;&nbsp;&nbsp;Daryl Malas and David Hancock<BR>
<BR>
OPEN DISCUSSION (25 minutes) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 minutes (1655 - 1700=
)<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* Next WGLC drafts<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* New implementer-specific drafts coming?<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* New indivdual drafts coming?<BR>
&nbsp;&nbsp;&nbsp;&nbsp;* Dates for a final interim meeting with the design=
 team?<BR>
<HR ALIGN=3DCENTER SIZE=3D"3" WIDTH=3D"95%"></SPAN></FONT><FONT SIZE=3D"2"><FONT FA=
CE=3D"Consolas, Courier New, Courier"><SPAN STYLE=3D'font-size:10pt'>___________=
____________________________________<BR>
Speermint mailing list<BR>
<a href=3D"Speermint@ietf.org">Speermint@ietf.org</a><BR>
<a href=3D"https://www.ietf.org/mailman/listinfo/speermint">https://www.ietf.=
org/mailman/listinfo/speermint</a><BR>
</SPAN></FONT></FONT></BLOCKQUOTE><FONT SIZE=3D"2"><FONT FACE=3D"Consolas, Cour=
ier New, Courier"><SPAN STYLE=3D'font-size:10pt'><BR>
</SPAN></FONT></FONT><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN =
STYLE=3D'font-size:11pt'><BR>
<BR>
Regards,<BR>
Jason<BR>
&nbsp;<BR>
Jason Livingood<BR>
Executive Director<BR>
Internet Systems Engineering<BR>
National Engineering &amp; Technical Operations<BR>
Comcast Cable Communications<BR>
215-286-7813<BR>
<FONT COLOR=3D"#0000FF"><U><a href=3D"jason_livingood@cable.comcast.com">jason_=
livingood@cable.comcast.com</a></U></FONT> <BR>
&nbsp;<BR>
</SPAN><FONT COLOR=3D"#7F7F7F"><FONT SIZE=3D"1"><SPAN STYLE=3D'font-size:8pt'>Thi=
s message and any attachments to it may contain PROPRIETARY AND CONFIDENTIAL=
 INFORMATION exclusively for intended recipients. Please DO NOT FORWARD OR D=
ISTRIBUTE to anyone else. If you are not the intended recipient, please cont=
act the sender and delete all copies of this e-mail from your system.</SPAN>=
</FONT></FONT><SPAN STYLE=3D'font-size:11pt'><BR>
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--B_3319525795_142587--


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FYI...

We look forward to seeing you in San Francisco.

Regards,

Daryl


------ Forwarded Message

74th IETF Meeting
San Francisco, CA
March 22-27, 2009
Host: Juniper

Early-Bird registration cutoff is this Friday, March 13 at 17:00 PT
(24:00 UTC). After that time, the registration fee will increase by $150
USD to $785 USD.

Online registration for the IETF meeting is at:
http://www.ietf.org/meetings/74/

Be sure to make your hotel reservation at the Hilton San Francisco. Hotel
information can be found at:
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The social event will be held at the California Academy of Sciences, more
information can be found at:
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New requirements for travel to USA for Visa Waiver Program Participants.
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ESTA (Electronic System for Travel Authorization)
http://cbp.gov/xp/cgov/travel/id_visa/esta/

Only 12 days until the San Francisco IETF!


------ End of Forwarded Message


From rfc-editor@rfc-editor.org  Tue Mar 10 11:15:07 2009
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Subject: [Speermint] RFC 5486 on Session Peering for Multimedia Interconnect (SPEERMINT) Terminology
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 5486

        Title:      Session Peering for Multimedia Interconnect 
                    (SPEERMINT) Terminology 
        Author:     D. Malas, Ed.,
                    D. Meyer, Ed.
        Status:     Informational
        Date:       March 2009
        Mailbox:    d.malas@cablelabs.com, 
                    dmm@1-4-5.net
        Pages:      10
        Characters: 22036
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-speermint-terminology-17.txt

        URL:        http://www.rfc-editor.org/rfc/rfc5486.txt

This document defines the terminology that is to be used in
describing Session PEERing for Multimedia INTerconnect (SPEERMINT).
This memo provides information for the Internet community.

This document is a product of the Session PEERing for Multimedia INTerconnect Working Group of the IETF.


INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.

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The RFC Editor Team
USC/Information Sciences Institute



From jason_livingood@cable.comcast.com  Tue Mar 10 11:24:40 2009
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From: "Livingood, Jason" <Jason_Livingood@cable.comcast.com>
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This draft is on the WG agenda.  We have 20 minutes to review several
substantive open issues.  I have uploaded my presentation, so you may want
to take a look at the open questions / discussion I would like to resolve.
See http://www3.ietf.org/proceedings/09mar/slides/speermint-0.pdf

Please take some time to review the draft at
http://www.ietf.org/internet-drafts/draft-ietf-speermint-srv-naptr-use-05.tx
t and please take note that all open issues are noted in the text with
[EDITORIAL NOTE: ABCDEFG].

Thanks
Jason


On 3/5/09 11:30 AM, "Internet-Drafts@ietf.org" <Internet-Drafts@ietf.org>
wrote:

> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the Session PEERing for Multimedia INTerconnect
> Working Group of the IETF.
> 
> 
> Title           : Use of DNS SRV and NAPTR Records for SPEERMINT
> Author(s)       : T. Creighton, J. Livingood
> Filename        : draft-ietf-speermint-srv-naptr-use-05.txt
> Pages           : 13
> Date            : 2009-03-05
> 
> The objective of this document is to specify the Best Current
> Practice (BCP) adopted by a service provider or other organization
> providing multimedia communication services such as Voice over
> Internet Protocol(VoIP) in order to locate another service provider
> to peer with in the context of Session PEERing for Multimedia
> INTerconnect.  This document attempts to fill the gaps in information
> from RFC 3261, RFC 3263, and other documents, in order to more assist
> service providers in more easily performing SIP peering.
> 
> [EDITORIAL NOTE: XREF ERROR GENERATED IN ABSTRACT, XREFS REMOVED]
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-speermint-srv-naptr-use-05.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
> Internet-Draft.
> _______________________________________________
> Speermint mailing list
> Speermint@ietf.org
> https://www.ietf.org/mailman/listinfo/speermint


From D.Malas@cablelabs.com  Fri Mar 20 09:29:35 2009
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All,

Just a reminder, the online registration and payment cutoff is today.

Regards,

Daryl

------ Forwarded Message
Subject: 74th IETF - Online Registration and Payment Cutoff

74th IETF Meeting
San Francisco, CA
March 22-27, 2009
Host: Juniper

Online registration and payment closes 17:00 PDT, Friday, 20 March 2009
(24:00 UTC/GMT). After 20 March 2009, all payments (whether or not you
have pre-registered) and registrations must be made on-site. A late fee
will apply.

Online registration for the IETF meeting is at:
http://www.ietf.org/meetings/74/

Be sure to make your hotel reservation at the Hilton San Francisco. Hotel
information can be found at:
http://www.ietf.org/meetings/74/hotels.html

New requirements for travel to USA for Visa Waiver Program Participants.
Additional information can be found on our web site at:
http://www.ietf.org/meetings/74/visa-info.html or you can go directly to
ESTA (Electronic System for Travel Authorization)
http://cbp.gov/xp/cgov/travel/id_visa/esta/

Only 4 days until the San Francisco IETF!


------ End of Forwarded Message


From D.Malas@cablelabs.com  Mon Mar 23 14:14:47 2009
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Date: Mon, 23 Mar 2009 14:15:35 -0700
From: Daryl Malas <d.malas@cablelabs.com>
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Jason,

Here are some comments regarding your draft:

2. Introduction
- You mention "service provider" throughout this section and the document,
and I think this should be "SIP service provider (SSP)".
- There is an incomplete sentence at the end of the section, "It should be
noted that..."

3.  Session Peering Setup
- Last time I will note the "service provider (SP1)" should be "SIP service
provider (SSP1) -- change throughout the draft.
- I think it should be noted in Figure 1 (and in the text) that the DNS
servers are part of the LUF.  This will align the draft better with other
Speermint terminology.  Also, would it be better to differentiate DNS from
ENUM for clarity purposes?  This may allow differentiation of LUF and LRF
(e.g. ENUM and SRV).
- I think this "SIP signaling path border element" can simply be "SBE".  You
expand it and use the acronym in various instances throughout.
- In the first paragraph under "Figure 1", I do not understand why the last
sentence "UDP, TCP and ..." is even in scope of this document.  Are you
intending context for the NAPTR regexp response?  Even in this case, I think
they are examples and should not be strictly defined.  Based on the rest of
the document, I would question whether this sentence is necessary.
- The paragraph "As a best current practice..." does not seem to provide
value to the document in my opinion.  It provides an architectural
recommendation rather than providing a recommendation of using NAPTR
order/pref and SRV priority/weight.  Perhaps a reference to RFC 5483 on
recommendations for load balancing would be appropriate.
- Regarding the call flows, I think expanding the different scenarios and
potential uses of the following portion is the most critical aspect:

                     |INVITE|      |      |      |      |
                     |----->|      |      |      |      |
                     |    NAPTR Query     |      |      |
                     |      |----->|      |      |      |
                     |    NAPTR Response  |      |      |
                     |      |<-----|      |      |      |
                     |     SRV Query      |      |      |
                     |      |----->|      |      |      |
                     |     SRV Response   |      |      |
                     |      |<-----|      |      |      |
                     |      A Query       |      |      |
                     |      |----->|      |      |      |
                     |      A Response    |      |      |
                     |      |<-----|      |      |      |
                     |      |       INVITE       |      |
                     |      |------------------->|      |

For example, expand the use of multiple NAPTRs and SRV records for
determining a single ingress point, multiple ingress points, and egress
points.  How many times must an ENUM query take place in an indirected
scenario with egress routes, etc.?

3.1 Target Determination
Is there a Speermint recommendation, taking into consideration RFC 5483, for
using SRV or ENUM NAPTRs for providing load balancing, based on ingress,
egress, and enumservice types?  I think this might be a good addition to
this section.

4.0 High Availability
I think if you apply my comments on 3.1 to that section, then you can tie
this section back to it (i.e. Continue the example).

Regards,

Daryl

-----------------
Daryl Malas
CableLabs
(o) +1 303 661 3302
(f) +1 303 661 9199
mailto:d.malas@cablelabs.com



From D.Malas@cablelabs.com  Mon Mar 23 14:49:56 2009
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Hadriel,

Here are some comments regarding the draft  (I know I am an author on this
draft, but my comments to the list are to solicit feedback from the mailing
list.):

3. Peering Scenarios
- Based on what is commonly in use *today*, I think the various methods of
"static" peering should be focused on first.  On-demand is something that
should be included as a potential future method.

- The sentence "Media-direct: In this model SIP proxies perform Layer 5
peering Signaling Function (SF)..." does not make sense to me.  Suggest:
"Media-direct: In this model Signaling Functions (SFs) perform Layer 5
peering, while media is sent directly between..."

- I noticed throughout the draft a lot of "SF/SBE" and "MF/DBE" uses.  Is it
necessary to do this?  Can we simply say SF and MF?  Based on RFC 5486, the
definitions for SF and MF say they are capabilities of a SBE and DBE.

- In "Decomposed:..." you say the model "is not discussed separately", but
then under Figure 2 it is discussed further.  Is this necessary or should it
be included in the "Decomposed" description?

4. Legend of Message Flows
- Just a nit, but this and the srv-naptr draft use "example.com" for the
example FQDNs.  Should this be "examplessp.com"?  Also, in the SBE URIs, it
should be "sbe1.ssp1.examplessp.com" -- potentially based on the outcome of
my first question.  I personally think it better aligns with the terminology
and what we are describing.

5. Basic Peering Message Flow
- I do not think a "basic" message flow should describe an "On-Demand"
peering phase.  In my opinion, a basic peering message flow is static and
direct between two SSPs.

7. Static Peering
- Just a comment, TLS is not commonly used in my experience of SSPs peering.
I think this should be described as "optional".  For that matter, IPSec is
not used that commonly.  While TLS is something to be considered in the
message flows, I think IPSec is out of scope of the draft.

- Co-Location, while I am not a fan of this term, is a more common method
for peering today, in my experience.  If others agree, then I think this
should be discussed first.

8. Federation-based Peering
- I think describing "Federation" is only contextual and is minor to the two
message flows: redirect server and ENUM server (LUF).  I think these should
be in a different section with a small description about their potential use
in a Federation.  This can both be used outside of a Federation.

Regards,

Daryl



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As noted in our WG meeting yesterday, and on our agenda, feel free to visit
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Jason

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From john.elwell@siemens-enterprise.com  Wed Mar 25 10:09:53 2009
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From: "Elwell, John" <john.elwell@siemens-enterprise.com>
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Although there was interest today in working on this further, I do not
think the present draft is in a suitable state for adopting as a
draft-ietf document. By all means charter a work item, but I would
prefer to see a further revision that takes into account the feedback
from today's meeting, in particular making it less prescriptive, before
adopting the draft as a working group document in fulfilment of the
charter item.

John


From theo@crazygreek.co.uk  Wed Mar 25 10:44:14 2009
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On Wed, Mar 25, 2009 at 5:08 PM, Elwell, John
<john.elwell@siemens-enterprise.com> wrote:
> By all means charter a work item, but I would
> prefer to see a further revision that takes into account the feedback
> from today's meeting, in particular making it less prescriptive, before
> adopting the draft as a working group document in fulfilment of the
> charter item.

I would like to echo this sentiment.

... I have no objection in the general goals of it, but i strongly
believe it should be focusing at the lower levels and general
*interconnect*/hop-by-hop stuff - things such as supporting TCP,
mutual TLS, NAPTR, overload control, etc rather than the endpoint
requirements to flow across those interfaces.


~ Theo

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From: "Venkatesh Venkataramanan (venkatev)" <venkatev@cisco.com>
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I echo this sentiment as well... I think there is definite value in this
draft. However, I think it's focus should be on "inter-connects" and
issues around it rather than "features" itself.=20

Thanks,
Venkatesh

-----Original Message-----
From: speermint-bounces@ietf.org [mailto:speermint-bounces@ietf.org] On
Behalf Of Theo Zourzouvillys
Sent: Wednesday, March 25, 2009 10:45 AM
To: Elwell, John
Cc: speermint@ietf.org
Subject: Re: [Speermint] draft-hancock-sip-interconnect-guidelines

On Wed, Mar 25, 2009 at 5:08 PM, Elwell, John
<john.elwell@siemens-enterprise.com> wrote:
> By all means charter a work item, but I would prefer to see a further=20
> revision that takes into account the feedback from today's meeting, in

> particular making it less prescriptive, before adopting the draft as a

> working group document in fulfilment of the charter item.

I would like to echo this sentiment.

... I have no objection in the general goals of it, but i strongly
believe it should be focusing at the lower levels and general
*interconnect*/hop-by-hop stuff - things such as supporting TCP, mutual
TLS, NAPTR, overload control, etc rather than the endpoint requirements
to flow across those interfaces.


~ Theo
_______________________________________________
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From Adam.Uzelac@globalcrossing.com  Wed Mar 25 11:03:15 2009
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From: "Uzelac, Adam" <Adam.Uzelac@globalcrossing.com>
To: Theo Zourzouvillys <theo@crazygreek.co.uk>, "Elwell, John" <john.elwell@siemens-enterprise.com>
Date: Wed, 25 Mar 2009 14:03:54 -0400
Thread-Topic: [Speermint] draft-hancock-sip-interconnect-guidelines
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Subject: Re: [Speermint] draft-hancock-sip-interconnect-guidelines
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Theo,

I am quite following your train of thought, but really would like to unders=
tand what you are saying - how does stating that support for TCP, TLS, etc =
(your list below) NOT translate into endpoint requirements?  This is not a =
leading question, but a request for clarification.

Adam

> -----Original Message-----
> From: speermint-bounces@ietf.org [mailto:speermint-bounces@ietf.org] On
> Behalf Of Theo Zourzouvillys
> Sent: Wednesday, March 25, 2009 10:45 AM
> To: Elwell, John
> Cc: speermint@ietf.org
> Subject: Re: [Speermint] draft-hancock-sip-interconnect-guidelines
>=20
> On Wed, Mar 25, 2009 at 5:08 PM, Elwell, John
> <john.elwell@siemens-enterprise.com> wrote:
> > By all means charter a work item, but I would
> > prefer to see a further revision that takes into account the feedback
> > from today's meeting, in particular making it less prescriptive,
> before
> > adopting the draft as a working group document in fulfilment of the
> > charter item.
>=20
> I would like to echo this sentiment.
>=20
> ... I have no objection in the general goals of it, but i strongly
> believe it should be focusing at the lower levels and general
> *interconnect*/hop-by-hop stuff - things such as supporting TCP,
> mutual TLS, NAPTR, overload control, etc rather than the endpoint
> requirements to flow across those interfaces.
>=20
>=20
> ~ Theo
> _______________________________________________
> Speermint mailing list
> Speermint@ietf.org
> https://www.ietf.org/mailman/listinfo/speermint

From theo@crazygreek.co.uk  Wed Mar 25 13:31:15 2009
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On Wed, Mar 25, 2009 at 6:03 PM, Uzelac, Adam
<Adam.Uzelac@globalcrossing.com> wrote:

> I am quite following your train of thought, but really would like to unde=
rstand what you are saying - how does stating that support for TCP, TLS, et=
c (your list below) NOT translate into endpoint requirements? =A0This is no=
t a leading question, but a request for clarification.

sorry, let me say that as "SIP User Agents" (in terms of UAC and UAS)
rather than "SIP hops".

NAPTR, SRV, TLS etc are all hop by hop issues rather than SIP UA ones
(UAC, UAS, etc).

 ~ Theo
