draft-ietf-mediactrl-call-flows-00

Alessandro AmiranteTobia Castaldi

Lorenzo MinieroSimon Pietro Romano

(University of Napoli Federico II/Meetecho)

26/03/09 IETF 74th, San Francisco 2

Changes

The draft is now a working group item draft-ietf-mediactrl-call-flows-00

Long process of internal review The existing text has been corrected/clarified All the placeholders have been filled

Usual updates on the flows draft-ietf-mediactrl-sip-control-framework-10 draft-ietf-mediactrl-ivr-control-package-06 draft-ietf-mediactrl-mixer-control-package-06

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Current status

State diagrams AS and MS perspective (including events)

Control channel establishment SIP dialog (COMEDIA) TCP/TLS and SYNC/K-ALIVE

Use case scenarios Sequence diagrams and protocol details

Security considerations? Will discuss this later

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State Diagrams: AS and MS

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Control Channel Establishment

SIP/SDP COMEDIA negotiation TCP case (TLS very similar) Use of new attributes (cfw-id)

CFW Channel Use of SYNC

cfw-id (Dialog-ID) matching Package negotiation Keep-Alive timeout value

Example of K-ALIVE

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Use case scenarios

Many scenarios are depicted Echo Tests, IVR Menus, Conferences, etc. Plenty of details (diagrams, protocol analysis, etc.) Involve IVR, Mixer or both

Focus is on CFW, not SIP Just brief considerations on 3PCC

Are additional scenarios/details required? Focus on functionality, rather than scenario itself No VoiceXML involved at the moment

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Addressed features (1)

Echo Test Direct (Mixer: self join) Recording (IVR: recording + prompt on leg)

Phone Call Direct (Mixer: join legs) Indirect (Mixer: hidden conference + join) Recording in both cases (IVR+Mixer: recording of

legs/conference + join and prompt on hidden conference)

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Addressed features (2)

Conferencing Bridging (Mixer: conference + join) Rich scenario (IVR+Mixer: conference, DTMF

collection for PIN, recording for name, join, prompt for name)

Coaching scenario (Mixer: orchestrated use of conference and joins)

Sidebars + BFCP (TBD) More on that later

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Addressed features (3)

Additional scenarios Voice Mail (IVR: variable announcements for digits,

VCR on messages) Current Time (IVR: variable announcements for

dates, parallel playback) DTMF Conference Control (IVR+Mixer: SRGS for

DTMF collection, use of Mixer operations for conference manipulation)

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Example of scenario: Echo Test

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Security considerations

Currently refers to the core drafts Framework provides guidance

CFW/TLS, SIP/TLS, SRTP, etc. IVR and Mixer have examples and guidelines

Similar examples in here too? Unauthorized operations How auditing should behave Examples of potential attacks ...

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Current notes

draft-boulton-mmusic-sdp-control-package-attribute-03 has expired... ... it's actually useful: will it come alive again?

Floor Control still a placeholder BFCP package (BFCP in the MS) missing Scenario with BFCP in the AS?

Sidebars Still ambiguous in XCON too Simplified scenario?

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Interop

New UniNA/Meetecho prototype released 0.4.0 version available

http://mediactrl.sf.net and http://www.meetecho.com/ TLS negotiation and support for Control Channel

Interoperability efforts Still where we were at Minneapolis No meeting in Malta / No interop event What's the status of other implementations?

Do call flows comply with them?

Prototype in action

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Questions?Further discussion?