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

2. CALEA Implementation Unit - FBI August 2008 2 AGENDAAGENDA Background for ConferencingBackground for Conferencing Included Capabilities in 3GPP TS 33.107Included Capabilities in 3GPP TS 33.107 Ongoing workOngoing work Background for ConferencingBackground for Conferencing Included Capabilities in 3GPP TS 33.107Included Capabilities in 3GPP TS 33.107 Ongoing workOngoing work

3. CALEA Implementation Unit - FBI August 2008 3 Conferencing Background 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 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

4. CALEA Implementation Unit - FBI August 2008 4 Centralized Conferencing General Architecture MRFC Access Switch Access Switch Access Switch Access Switch DF CF Alice Bob Ted Carol Packet Network MRFP MRFC – Media Resource Function Controller MRFP – Media Resource Function Processor Three Scenarios Supported 1.Carol is Subject and creates the Conference 2.Carol is Subject and Bob creates the Conference 3.Carol –Conference is the Subject (Conference Circuit is the Subject)

5. CALEA Implementation Unit - FBI August 2008 5 Major Scenarios Addressed 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 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

6. CALEA Implementation Unit - FBI August 2008 6 IRI for Conferencing 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. 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.

7. CALEA Implementation Unit - FBI August 2008 7 Communications Content (CC) Related Events for Conferencing 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 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

8. CALEA Implementation Unit - FBI August 2008 8 SummarySummary SA3-LI needs to define a Stage 3 for interception of ConferencingSA3-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 definedBased 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 SA3-LI needs to define a Stage 3 for interception of ConferencingSA3-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 definedBased 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