RE: [AVT] draft-ietf-avt-rtp-cn-06

["Robert Zopf" <[e-mail]>]

draft-ietf-avt-rtp-cn-06Oren,

In some previous drafts of draft-ietf-avt-profile-new-xx.txt, the CN payload
type was changed to 19 (not sure the reasons why), but it has since been
changed back to 13 - that is 13 DECIMAL.

Below I cut out the section explaining it in the latest profile draft.

Regards,

Rob.

<!--StartFragment-->6 Payload Type Definitions

   Tables 4 and 5 define this profile's static payload type values for
   the PT field of the RTP data header.  In addition, payload type



Schulzrinne/Casner                                           [Page 31]

Internet Draft                  Profile                November 20, 2001


   values in the range 96-127 MAY be defined dynamically through a
   conference control protocol, which is beyond the scope of this
   document. For example, a session directory could specify that for a
   given session, payload type 96 indicates PCMU encoding, 8,000 Hz
   sampling rate, 2 channels.  Entries in Tables 4 and 5 with payload
   type "dyn" have no static payload type assigned and are only used
   with a dynamic payload type. Payload type 13 is reserved for a
   comfort noise payload format to be specified in a separate RFC.
   Payload type 19 is also marked "reserved" because some draft versions
   of this specification assigned that number to a comfort noise payload
   format.  The payload type range 72-76 is marked "reserved" so that
   RTCP and RTP packets can be reliably distinguished (see Section
   "Summary of Protocol Constants" of the RTP protocol specification).

  -----Original Message-----
  From: [e-mail] [mailto:[e-mail]]On Behalf Of Oren
Peleg
  Sent: Tuesday, July 16, 2002 12:15 PM
  To: [e-mail]
  Cc: [e-mail]; Tsahi Etziony
  Subject: [AVT] draft-ietf-avt-rtp-cn-06


  Robert hello,

  Since I've seen a Vendor that uses the Payload Type number: 13 as: 0x13
(19 in decimal), I would like to understand if this is your interpretation.

  Thanks,

  Oren Peleg

  Work phone No. : 03 - 5394167

  Home phone No. : 03 - 5335913

  Cell phone No. : 055 - 669613

  Email : [e-mail]




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