Standard Guide for Planning and Developing 9-1-1 Enhanced Telephone Systems
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 jurisdictions in the development of 9-1-1 enhanced systems.
1.3 This guide makes recommendations for planning and organizational needs in the development of 9-1-1 enhanced systems.
1.4 This guide does not address access to public safety response services through means other than use of the 9-1-1 telephone number.
1.5 This guide applies only to the use of the number 9-1-1 to request a public safety response, from the point of initiation of the call through the point that the caller is connected to the responsible agency, or essential information needed for disposition of the call, or both, is received.
1.6 The sections in this guide are arranged in the following order:
1.7 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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