This Standard defines the interfaces between a Telecommunication Service Provider (TSP) and a Law Enforcement Agency (LEA) to assist the LEA in conducting lawfully authorized electronic surveillance for Voice over Internet Protocol (VoIP) and Rich Communications Services (RCS) Messaging in wireline and broadband telecommunications networks. This version of the standard extends the capabilities in ATIS-1000678.v3.2015(R2020) and also provides corrections.

This document provides the mechanisms to perform lawfully authorized electronic surveillance of VoIP subject to the appropriate legal and regulatory environment. It is not the intent of this document to imply or impact any pending Communications Assistance for Law Enforcement Act (CALEA) regulatory decisions related to VoIP.

NOTE - Annex A, ASN.1 Definitions, of this Standard has also been formatted as a separate plain text file and electronically packaged with this standard.