Association of Public-Safety Communications Officials

AG Communications Systems

American Tower

Arch Wireless

Argonne National Laboratory

AT&T

AT&T Wireless

BellSouth

Cellular Telecommunications and Internet Association

Cingular Wireless

Dobson Wireless Systems

EDO Corporation

Ericsson

Federal Bureau of Investigation

Federal Communications Commission

FEMA

IEEE Technical Committee on Communications Quality & Reliability

Lucent Technologies Bell Labs

Metrocall

Motorola

National Communications System NCC

National Emergency Number Association

Network Reliability and Interoperability Council

Nextel

New York City Police Department

New York City Mayor’s Office

Nortel Networks

Pennsylvania State Police

Personal Communications Industry Association

Qwest Wireless

Rural Cellular Association

SkyTel

Spectrasite Communications

Sprint PCS

Telcordia Technologies

T-Mobile

Triton PCS

TruePosition

Union Cellular

U.S. Department of Energy

U.S. Marshals Service

U.S. Secret Service

Verizon

Verizon Wireless

Wheat International