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May 9th 2011 IETF SIPREC INTERIM - draft-ietf-siprec-architecture 1
An Architecture for Media Recording using the Session Initiation
Protocoldraft-ietf-siprec-architecture
Andy Hutton <[email protected]>
Leon Portman <[email protected]>
Raj Jain <[email protected]>
Ken Rehor <[email protected]>
May 9th 2011 2
Status
• draft-ietf-siprec-architecture-02 was submitted following IETF 80.
– All changes agreed at IETF 80 incorporated.
– Main changes outlined on next slide.
• One comment raised on list.
– Request to change diagram showing SRC interaction with MediaCtrl (See following slides).
IETF SIPREC INTERIM - draft-ietf-siprec-architecture
• Various editorial changes.
• Figure 4 added to show a decomposed SRC and interaction with MediaCtrl.
• Figure 5 added showing conference focus acting as an SRC.
• Removal of text relating to metadata content and delivery, replaced with reference to metadata drafts.
• Security Considerations.– Removal of text relating to encryption / re-encryption.
– Removal of statement on SRTP.
May 9th 2011 3
Main updates in 02 draft.
IETF SIPREC INTERIM - draft-ietf-siprec-architecture
• Comment from Partha. http://www.ietf.org/mail-archive/web/siprec/current/msg01931.html – “As part of the discussion about Metadata and RTP model
with lot of folks, I realized that it is better to show "UA instance" which is associated with SRC to create RS as a separate instance. Fig 4 in the draft shall be updated as” (See next Slide).
– “Here in the above figure, session recording UA is a separate UA instance apart from CS creating UA (Mediactrl application server) instance. Cooridination between Session Recording UA and Mediactrl application server is outside the scope of SIPREC. The same logical figure shall be extended to other SRC architecture figure by which the importance of SIP based RS UA with non-sip CS is clear”.
May 9th 2011 4
Comment on SRC Decomposition
IETF SIPREC INTERIM - draft-ietf-siprec-architecture
May 9th 2011 5
Comment on SRC Decomposition Session Recording Server (SRS) +----------+ (Recording Session) | | +-----------SIP------------------------->| UA-A | | | (SRS) | | +----------+ | Session Recording Client (SRC) | +----------------------------------------+ | | +-----------+ | | | | Session | +------------+ | | | | Recording | | | | | +---------+ | | UA | | Media | | <--RTP--+ | | | +-----------+ | | | | | | ^ | | | | | | | | | | | | | V | | | | | | +-----------+ | Server | | | UA-B | | | MediaCtrl |MEDIACTRL | |<-----RTP------>| | | |Application|<-------->| | | +---------+ | | Server | +------------+ | ^ | +-----------+ | | +--------^-------------------------------+ | | | +-----------------------SIP-------------------------+ (Communication Session)
Motivation is to show CS can be non SIP – Appears to be out of scope according to definition of a CS in SIPREC - Agreed?
IETF SIPREC INTERIM - draft-ietf-siprec-architecture
May 9th 2011 6
Proposed Text For RTP Model• Proposal made on list for new text describing
RTP Model options. http://www.ietf.org/mail-archive/web/siprec/current/msg01953.html
– SRC acting as RTP Translator (Open issue with SRTP interaction).
– SRC acting as RTP Mixer
– SRC acting as RTP Endpoint
• No comments received – Propose to include text in draft 03.
IETF SIPREC INTERIM - draft-ietf-siprec-architecture
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