Worley, Dale R (Dale)
2011-05-20 20:25:06 UTC
The media policy dataset defines an XML element <media-intermediaries> for specifying intermediary
relays that should be used for sending media. The current draft has some odd features with regard
to this element:
- It can be specified for a session-info but not a session-policy. Whereas it seems to me that it should
be possible to put a media intermediary specification into a policy.
- <media-intermediaries> is specified as a child of <session-info>, with various complexities to allow
particular intermediaries to be specified for particular streams. But it seems simpler to me to demote
<media-intermediaries> to a child of <stream>, so that the intermediaries for each stream can be
specified directly.
- The handling of media streams that use multiple ports is not specified clearly. My impression is that the
only such protocol is RTP, which uses one port for the media (RTP proper) and one port for control information
(RTCP). Are there any other protocols that use multiple ports?
Dale
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relays that should be used for sending media. The current draft has some odd features with regard
to this element:
- It can be specified for a session-info but not a session-policy. Whereas it seems to me that it should
be possible to put a media intermediary specification into a policy.
- <media-intermediaries> is specified as a child of <session-info>, with various complexities to allow
particular intermediaries to be specified for particular streams. But it seems simpler to me to demote
<media-intermediaries> to a child of <stream>, so that the intermediaries for each stream can be
specified directly.
- The handling of media streams that use multiple ports is not specified clearly. My impression is that the
only such protocol is RTP, which uses one port for the media (RTP proper) and one port for control information
(RTCP). Are there any other protocols that use multiple ports?
Dale
_______________________________________________
Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping
This list is for NEW development of the application of SIP
Use sip-***@cs.columbia.edu for questions on current sip
Use ***@ietf.org for new developments of core SIP