[MMUSIC] Review of draft-nandakumar-mmusic-sdp-mux-attributes-02: sections 5.22, 5.40, 5.41, 5.42

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 31 May 2013 07:33 UTC

Return-Path: <prvs=4863755801=christer.holmberg@ericsson.com>
X-Original-To: mmusic@ietfa.amsl.com
Delivered-To: mmusic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1D9FF21F941F for <mmusic@ietfa.amsl.com>; Fri, 31 May 2013 00:33:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.823
X-Spam-Level:
X-Spam-Status: No, score=-5.823 tagged_above=-999 required=5 tests=[AWL=0.125, BAYES_00=-2.599, HELO_EQ_SE=0.35, HTML_MESSAGE=0.001, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fy1ddQYhJHz8 for <mmusic@ietfa.amsl.com>; Fri, 31 May 2013 00:33:19 -0700 (PDT)
Received: from mailgw7.ericsson.se (mailgw7.ericsson.se [193.180.251.48]) by ietfa.amsl.com (Postfix) with ESMTP id 05BF921F8CF4 for <mmusic@ietf.org>; Fri, 31 May 2013 00:33:18 -0700 (PDT)
X-AuditID: c1b4fb30-b7f9e6d000002643-3c-51a8523d422c
Received: from ESESSHC019.ericsson.se (Unknown_Domain [153.88.253.125]) by mailgw7.ericsson.se (Symantec Mail Security) with SMTP id 42.21.09795.D3258A15; Fri, 31 May 2013 09:33:17 +0200 (CEST)
Received: from ESESSMB209.ericsson.se ([169.254.9.167]) by ESESSHC019.ericsson.se ([153.88.183.75]) with mapi id 14.02.0328.009; Fri, 31 May 2013 09:33:16 +0200
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>, "suhasietf@gmail.com" <suhasietf@gmail.com>, =?iso-8859-1?Q?Ari_Ker=E4nen?= <ari.keranen@ericsson.com>, "Flemming Andreasen (fandreas@cisco.com)" <fandreas@cisco.com>
Thread-Topic: Review of draft-nandakumar-mmusic-sdp-mux-attributes-02: sections 5.22, 5.40, 5.41, 5.42
Thread-Index: Ac5dzHO0Q+r/un2nR0ihy0dNOS7t9g==
Date: Fri, 31 May 2013 07:33:16 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B1C37E6A7@ESESSMB209.ericsson.se>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [153.88.183.17]
Content-Type: multipart/alternative; boundary="_000_7594FB04B1934943A5C02806D1A2204B1C37E6A7ESESSMB209erics_"
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrELMWRmVeSWpSXmKPExsUyM+Jvra5t0IpAg1fPZCzeX9C1mLr8MYtF b0O4xc65HcwOLB6tz/ayekz5vZHVY+esu+weS5b8ZApgieK2SUosKQvOTM/Tt0vgztj7zq/g xAHGilc/PrM0MC5ezNjFyMkhIWAiMaW3hRnCFpO4cG89WxcjF4eQwGFGic2H5rJAOEsYJT6u WMTUxcjBwSZgIdH9TxskLiJwlVHibPtCsG5mgQyJKY1zWUFsYYFkiVvrWllB6kWA4rfvlYCE RQT0JDqfP2MCsVkEVCWe3bjIBmLzCvhKHFr0GqyVEeiI76fWMEGMFJe49WQ+E8RxAhJL9pyH OlRU4uXjf2DjJQQUJZb3y4GYzAL5EtvOq0FMFJQ4OfMJywRG4VlIBs1CqJqFpAqiRE/ixtQp bBC2tsSyha+ZIWxdiRn/DrEgiy9gZF/FyJ6bmJmTXm6+iREYRQe3/DbYwbjpvtghRmkOFiVx Xn3exYFCAumJJanZqakFqUXxRaU5qcWHGJk4OEEEl1QDo/6U9RbLmirnbqi1+LdqQdbfie0d 4uv+TM1Ws5DP9ek/ebGWU//X40OFp7MFpHZy9qhJnyjcWK38mcXfaHKeW2P1903n5pldmr9K Xdb0r5CSoKpPp25WcnfY0WsvHnrLPGjIFfQ4t2ttO2t5+gdPhznZ76Met7w73lUquHZGcuna yXNuN8xbpcRSnJFoqMVcVJwIAJ2G2vd1AgAA
Subject: [MMUSIC] Review of draft-nandakumar-mmusic-sdp-mux-attributes-02: sections 5.22, 5.40, 5.41, 5.42
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Multiparty Multimedia Session Control Working Group <mmusic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mmusic>, <mailto:mmusic-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/mmusic>
List-Post: <mailto:mmusic@ietf.org>
List-Help: <mailto:mmusic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mmusic>, <mailto:mmusic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 31 May 2013 07:33:26 -0000

Hi,

I was requested to review the attributes listed in sections 5.22, 5.40, 5.41 and 5.42.

However, first I have a general comment on the document:

For some attributes (e.g. MSRP-CEMA), there is note text saying:

"Not recommended due to legacy interop purposes"

Making such statements is completely outside the scope of the document. The document is about multiplexing, and how/if attributes are affected.

There is also similar note text saying:

"Not recommended due to interop purposes"

Now, for the 3GPP defined attributes you could say "Usage only defined for IMS", or something. But, again, it's not within the scope of this document to recommend against using things.

...unless, of course, there from a multiplexing perspective is a reason to do so, and they should be listed under the NOT RECOMMENDED category:


5.22

  +------------+---------------------------------+---------+----------+
   | Name       | Notes                           | Current | Category |
   +------------+---------------------------------+---------+----------+
   | msrp-cema  |                                 | M       | NORMAL   |
   |            |                                 |         |          |
   |            |                                 |         |          |
   +------------+---------------------------------+---------+----------+


5.40


   +-------------+--------------------------------+---------+----------+

   | Name        | Notes                          | Current | Category |

   +-------------+--------------------------------+---------+----------+

   | g.3gpp.cat  | Usage defined for the IP       | M       | NORMAL   |

   |             | Multimedia Subsystem [ref]     |         |          |

   |             |                                |         |          |

   +-------------+--------------------------------+---------+----------+


5.41


   +-------------+--------------------------------+---------+----------+

   | Name        | Notes                          | Current | Category |

   +-------------+--------------------------------+---------+----------+

   | g.3gpp.crs  | Usage defined for the IP       | M       | NORMAL   |

   |             | Multimedia Subsystem [ref]     |         |          |

   |             |                                |         |          |

   +-------------+--------------------------------+---------+----------+


5.42

This is actually an interesting one, and needs a little more investigation. So, I'll have to come back on that one. It would be good if Richard Ejzak, who is the "architect" behind the attributes, could take a look :)


  +------------------+---------------------------+---------+----------+

   | Name             | Notes                     | Current | Category |

   +------------------+---------------------------+---------+----------+

   | secondary-realm  | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | visited realm    | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-m-cksum      | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-s-cksum      | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-m-att        | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-s-att        | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-s-bw         | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-m-att        | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   | omr-codecs       | Usage defined for the IP  | M       | TBD      |

   |                  | Multimedia Subsystem [ref]|         |          |

   |                  |                           |         |          |

   +------------------+---------------------------+---------+----------+



Regards,

Christer