Subcommittees & Joint Projects


WTSC NSEP is comprised of members of WTSC RAN, ESIF NGES, and PTSC. The group will develop a joint study on Emergency Services and National Security/Emergency Preparedness Next Generation Network Priority Services (NS/EP NGN-PS) coexistence on LTE Radio Access Networks (RANs). This study will focus on how Emergency Services could potentially starve NS/EP NGN-PS communications during network degradation conditions (e.g., congestion and overload conditions during disaster events) and provide guidance to help mitigate the problem.

Lawfully Authorized Electronic Surveillance (LAES)

Mission: The LAES Subcommittee develops and recommends standards, technical requirements and technical reports related to Lawfully Authorized Electronic Surveillance (LAES) of packet-mode technologies in a wireline environment.

Scope: The LAES Subcommittee co-ordinates and develops standards, technical requirements, technical reports and other documents relevant to LAES of packet-mode technology in telecommunications networks in the U.S., taking advantage of standards development progress in other standards organizations, e.g. IETF, "T1P1" and ETSI. In as much as the development of standards may be evolved or influenced by several ATIS technical committees/forums, PTSC and the PTSC LAES Subcommittee will maintain liaisons with appropriate ATIS Committees/Forums, as well as with standards-setting bodies, external to ATIS and will adopt other SDO standards as appropriate.

Glen Myers, CounterLink

Vice Chair
Nagaraja Rao, Nokia

Cloud Lawful Intercept (CLI)

PTSC CLI is a joint project led by the PTSC Lawfully Authorized Electronic Surveillance (LAES) subcommittee and coordinated with WTSC-LI. This joint work is addressing Lawful Interception Implications on Cloud Services (WTSC Issue #P0103, PTSC Issue #S0103).

IMS Emergency Services Network

Joint project led by the WTSC Systems and Networks (SN) subcommittee and coordinated with ESIF’s Next Generation Emergency Services (NGES) subcommittee and the Packet Technologies and Systems Committee (PTSC) for an IMS-based Emergency Services Network (ESN). This work includes:

  • Extending ATIS-0700015 to address Multimedia Emergency Services (MMES) (WTSC Issue 44)
  • Automating Location Acquisition for Emergency Services VoIP Calls (WTSC Issue 34)

Applying Common IMS to NG9-1-1 Networks

The ESIF Next Generation Emergency Services (NGES) subcommittee is leading a joint work effort that addresses the application of common IMS (Stage 1, 2, and 3) for the processing, transport, and/or delivery of Emergency Service calls within the NG9-1-1 network to the appropriate PSAP (ESIF Issue 81). This is a joint effort with the Packet Technologies and Systems Committee (PTSC) and the Wireless Technologies and Systems Committee Systems and Network Subcommittee (WTSC SN). Issue 81 is a continuation of work previously completed by the ESIF NGES for defining the call processing, transport, and delivery of Emergency Service calls within the NG9-1-1 network (ESIF Issue 74).