CG-IEIK-001 Issue 4-August 1, 2005

The MSAG contains all streets in the exchanges serving the areas for which the county / city / parish has purchased the 911 service. The Emergency Service Numbers (ESNs) are assigned to the streets for routing purposes. MSAG and ESNs are explained in detail later in this document.

An example of an MSAG entry is shown below:

MSAG Entry
Street	Low Range	High Range	O / E / B	Community	State	Exch	ALI ESN
Main Street	1	99	B	Anytown	AL	Anyt	050