Re: [BLISS] I-D Action:draft-ietf-bliss-shared-appearances-07.txt

Alan Johnston <alan.b.johnston@gmail.com> Tue, 15 March 2011 14:16 UTC

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Date: Tue, 15 Mar 2011 09:18:00 -0500
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From: Alan Johnston <alan.b.johnston@gmail.com>
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Subject: Re: [BLISS] I-D Action:draft-ietf-bliss-shared-appearances-07.txt
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All,

I have updated the draft based on Robert's feedback and my responses sent to
the list previously.   There are lots of edits, so Diff2 gives the best
view:


http://tools.ietf.org/rfcdiff?url2=draft-ietf-bliss-shared-appearances-07.txt

A few additional notes:

- I added some text about dialog matching which we need to be sure is
correct - see 5.2.1.

- There was a question about the ABNF changes and the SALUD work.  Since the
SALUD work is just on the Alert-Info URN, there are no ABNF changes planned
to RFC 3261.

- I added text relating to appearance handling during call transfers.  See
5.3.1, 5.3.2, and 5.3.3.

Comments most welcome!

- Alan -

On Mon, Mar 14, 2011 at 4:00 PM, <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 Basic Level of Interoperability for SIP
> Services Working Group of the IETF.
>
>
>        Title           : Shared Appearances of a Session Initiation
> Protocol (SIP) Address of Record (AOR)
>        Author(s)       : A. Johnston, et al.
>        Filename        : draft-ietf-bliss-shared-appearances-07.txt
>        Pages           : 67
>        Date            : 2011-03-14
>
> This document describes the requirements and implementation of a
> group telephony feature commonly known as Bridged Line Appearance
> (BLA) or Multiple Line Appearance (MLA), or Shared Call/Line
> Appearance (SCA).  When implemented using the Session Initiation
> Protocol (SIP), it is referred to as shared appearances of an Address
> of Record (AOR) since SIP does not have the concept of lines.  This
> feature is commonly offered in IP Centrex services and IP-PBX
> offerings and is likely to be implemented on SIP IP telephones and
> SIP feature servers used in a business environment.  This feature
> allows several user agents (UAs) to share a common AOR, learn about
> calls placed and received by other UAs in the group, and pick up or
> join calls within the group.  This document discusses use cases,
> lists requirements and defines extensions to implement this feature.
>
> A URL for this Internet-Draft is:
>
> http://www.ietf.org/internet-drafts/draft-ietf-bliss-shared-appearances-07.txt
>
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