State and Local regulations require all Telecom Service Providers that deliver dial tone service provide Enhanced 911 (E911) services to their customers.
The E911 database contains the Master Street Address Guide (MSAG) and Emergency Service Number (ESN) information.
It is the responsibility of the E911 Provider to assign, maintain and resolve discrepancies in MSAG data for their service area. The E911 Customer is also responsible for providing new address information and changes to address information to the Incumbent Local Exchange Carrier (ILEC ) data vendor for updating to the MSAG database.
It is the responsibility of all telecommunication companies (wireless and wireline) participating in an E911 service area to ensure that all data records sent to the E911 host database have an MSAG valid address. Each telecommunication company will work directly with the E911 Customer to resolve any address discrepancies.