1.1 This guide recommends minimum performance requirements for enhanced access to public safety services using the North American standard emergency telephone number, 9-1-1.1.2 This guide provides assistance to states, counties, and local jurisd
ASTM
Standard Guide for Planning and Developing 9-1-1 Enhanced Telephone Systems (Withdrawn 2008)
STD-48893
1992
2003-03-10
10