All, This document has a number of updates based on AD review and other reviews which are summarized below.
The changes are based on changes since the -09 version from December. Comments are most welcome! Thanks to everyone for their reviews and feedback. - Alan - - Changed conflicting text on <exclusive> element. True means the call/dialog cannot be replaced or joined. The default is False if not specified. - Added missing normative text on the usage of the 'shared' event parameter. - Clarified that UAs do not insert appearance parameter into Alert-Info - Clarified what happens if a UA in group sends an INVITE to the group AOR. This uses two appearance numbers. - Removed text about proxies removing Alert-Info header fields - Clarified that subscriptions and publications must be authorized. - Made security considerations text consistent with that in Replaces and Join RFCs. - Added IANA section on registration of 'appearance' parameter to Alert-Info header field - Fixed error in URN registration On Fri, Jun 8, 2012 at 1:26 PM, <[email protected]> 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) : Alan Johnston > Mohsen Soroushnejad > Venkatesh Venkataramanan > Filename : draft-ietf-bliss-shared-appearances-11.txt > Pages : 70 > Date : 2012-06-08 > > 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. > This specification updates RFC3261 and RFC4235. > > > A URL for this Internet-Draft is: > > http://www.ietf.org/internet-drafts/draft-ietf-bliss-shared-appearances-11.txt > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > This Internet-Draft can be retrieved at: > > ftp://ftp.ietf.org/internet-drafts/draft-ietf-bliss-shared-appearances-11.txt > > The IETF datatracker page for this Internet-Draft is: > https://datatracker.ietf.org/doc/draft-ietf-bliss-shared-appearances/ > > _______________________________________________ > I-D-Announce mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/i-d-announce > Internet-Draft directories: http://www.ietf.org/shadow.html > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt >
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