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Conferencing Status in 3GPP SA3-LI

Conferencing Status in 3GPP SA3-LI. August 25 2008 Jean Trakinat Selvam Rengasami TrideaWorks Consultants to CALEA Implementation Unit Technical Program Section (TPS). AGENDA. Background for Conferencing Included Capabilities in 3GPP TS 33.107 Ongoing work.

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Conferencing Status in 3GPP SA3-LI

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  1. Conferencing Status in 3GPP SA3-LI August 25 2008 Jean Trakinat Selvam Rengasami TrideaWorks Consultants to CALEA Implementation Unit Technical Program Section (TPS)

  2. AGENDA • Background for Conferencing • Included Capabilities in 3GPP TS 33.107 • Ongoing work

  3. Law Enforcement initial conferencing requirements White Paper submitted to 3GPP SA3-LI in 2Q 2005 Conferencing Feature defined in 3GPP TS 24.147 Based on SIP for call related interactions Some capabilities based on other protocols (e.g., Binary Floor Control Protocol) Ongoing SA3-LI work focused on updating 3GPP TS 33.107 CR agreed in April 2008 to provide Stage 2 description of capabilities related to conferencing Conferencing Background

  4. Centralized ConferencingGeneral Architecture Access Switch Bob Packet Network Ted Alice MRFC Access Switch Access Switch MRFP Access Switch DF Three Scenarios Supported Carol is Subject and creates the Conference Carol is Subject and Bob creates the Conference Carol –Conference is the Subject (Conference Circuit is the Subject) CF Carol MRFC – Media Resource Function Controller MRFP – Media Resource Function Processor

  5. Case A - Interception of Conference Calls associated with or owned by the User who is the subject of interception Case B - Interception of a Conference in which the subject is a participant Case C - Interception of a Conference that itself is the subject of interception Major Scenarios Addressed

  6. Interception Related Information (IRI) Events Creation, Modification, and Destruction of Conference Start of Conference End of Conference Parties Joining a Conference Parties Leaving a Conference Events reported and the level of information reported for a given event varies according to the cases mentioned earlier. IRI for Conferencing

  7. Interception of CC for all three conferencing cases Additionally in Case A, interception of CC for a conference held by the interception subject Binary Floor Control Events – considered for further study pending further work by other parts of 3GPP on the protocol work Communications Content (CC) Related Events for Conferencing

  8. Summary • SA3-LI needs to define a Stage 3 for interception of Conferencing • Updates for 3GPP TS 33.108 • Based on progress and development in other parts of 3GPP, SA3-LI will consider updates to the Conferencing work as necessary to ensure LI is appropriately defined

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