scope:

This Technical Report (TR) completes and provides the results of the study of Lawfully Authorized Electronic Surveillance (LAES) for Advanced Voice over Packet (VoP) Conferencing Services. Advanced conferencing makes available sophisticated services for communications among multiple parties beyond those available in three-way calls (e.g., access control and media policies can be applied, information about the Conference can be provided to the involved parties).

This TR describes the Advanced VoP Conferencing Services from an LAES perspective and defines the capabilities that can be used for lawful interception of such services. Any requirements or standards language (i.e., "shall", "should", etc.) are used strictly in the context of ensuring that this TR is inherently sound and provides appropriate guidance to voluntary implementers. This TR is not intended to imply that the topic of LAES for Advanced VoP Conferencing Services falls under the Communications Assistance for Law Enforcement Act (CALEA).

This TR addresses LAES capabilities for intercepting and reporting, pursuant to a lawful authorization, the communications of a network-based (i.e., not customer premises equipment based) Session Initiation Protocol (SIP) voice Conference as described in IETF RFC4353 [Ref 4], created by an Intercept Subject. With respect to conferencing content, this TR addresses the interception of VoP content at a network-based audio conference mixer. Other types of SIP conferences -- such as a multi-media (e.g., video, data) conference -- are outside the scope of this TR.

Purpose

This TR is provided as a specification for addressing lawful intercept of Advanced VoP Conferencing.