Many states are adopting legislation to regulate 9-1-1 service as it applies to Multi Line Telephone Systems (MLTS) or PBXs (Private Branch Exchanges). Some states now require enterprises and/or residential MLTS operators to ensure that when a user calls 9-1-1 on their system, ANI (Automatic Number Identification) and ALI (Automatic Location Identification) is provided to the PSAP (Public Safety Answering Point).

The following are general summaries of applicable state legislation and/or regulations, as well as links to the legislation or regulations themselves. These summaries should not be taken as official records of state law, but are instead for informational use only.

To view the NENA model legislation upon which many states are basing their proposed legislation, click here

State		Description
Arkansas		Any person, company, or corporation, public or private, providing exchange telephone service is required to forward the telephone number and street address of any telephone used to place a 9-1-1 call to the PSAP, if the PSAP is E9-1-1 compatible.
Colorado		MLTS operators who do not provide ANI, ALI, or both must disclose such fact in writing to their end-users and instruct them to provide their telephone number and exact location when calling 9-1-1. Learn more ...
Connecticut		A private company, corporation, or institution may direct its 9-1-1 calls, along with ANI and ALI, to an on-site security answering point proven to dispatch emergency response services just as well or better than a PSAP. Learn more ... Also, proposes that residential MLTS operators must ensure their systems provide one distinctive ANI and ALI for each residential unit. Business MLTS would be required to deliver an ELIN (emergency location identification number) designating an ERL (emergency response location) that provides at least the building and floor location of the caller. Requirements for ERLs are outlined, as are timelines for implementation of these rules, including specific timelines for IP-based MLTS. Learn more ...
Florida		All PBX systems installed after January 1, 2004 must be able to provide station level ALI. Learn more ...
Illinois		Residential private switch service providers must ensure that their system provides the 9-1-1 caller’s telephone number and physical location to the PSAP. Also requires private business switch operators to ensure that their system provides ANI and ALI for each 9-1-1 call. Requirements for ERLs (emergency response locations) are outlined. Learn more ...
Kentucky		Residential private switch telephone service providers located in E9-1-1 capable areas must provide number and location information for each 9-1-1 call, and must provide service suppliers with location information specific to the apartment number or floor, if applicable. Learn more ...
Louisiana		All PBX systems installed after January 1, 2005 must be capable of providing station-level ALI. Learn more ...
Maine		For residential MLTS, one distinct ANI and ALI for each location must be provided with 9-1-1 calls. Businesses must provide ANI and ALI for all 9-1-1 calls. Specific requirements for ANI and ALI are outlined. If each end user is not provided one distinctive ANI or one distinctive ALI, or both, the MLTS operator is required to provide written instructions which direct each caller to stay on the telephone and provide the PSAP with his or her telephone number and exact location. Learn more ...
Michigan		Proposes that providers of private switch equipment or services for businesses be required to ensure their system provides ANI and ALI for all 9-1-1 calls. Location identification requirements are outlined. Learn more ...
Minnesota		Requires operators of MLTS purchased after December 31, 2004 to ensure that their system provides location information and a callback number for each 9-1-1 call. Residential MTLS should provide one distinctive ANI and one distinctive ALI per residential unit. Location identification requirements for businesses are outlined. Learn more ...
Mississippi		Where E9-1-1 service is available, requires “shared tenant service” telephone system operators to ensure their system provides number and location information to the local exchange telephone service provider in the event of a 9-1-1 call for each and every extension or user. Learn more ...
Nebraska		Proposes the implementation of state-wide E9-1-1 service by July 1, 2010, but includes no specific requirements for MLTS as of yet. Learn more ...
Ohio		A bill based on the NENA model legislation has been drafted, but is not yet introduced.
Pennsylvania		Proposes that MLTS operators be required to ensure their system provides ALI and ANI for each station. Location information would be required to specify floor, room, building, and/or office or cubicle as applicable. Learn more ...
Tennessee		“Shared Tenant Service Providers” (“any basic local exchange service subscriber who shares or resells basic local exchange service”) must ensure that their system provides ANI and up-to-date ALI for every 9-1-1 call. Learn more ...
Texas		Residential MLTS users must receive the same level of 9-1-1 service as non-MLTS residential users in the region, including but not limited to ANI. Learn more ... The emergency communication district of Tarrant County has its own specific regulations. Businesses using telephone services through a publicly or privately owned telephone switch must be able to provide location and number information for each 9-1-1 call. For businesses, location information must be specified to the floor. Learn more ...
Vermont		Privately owned telephone system operators must provide ANI signaling and station-level ALI data and updates where E9-1-1 is available. Learn more ...
Virginia		All MLTS acquired or installed on or after July 1, 2009 must provide ALI and ANI to the PSAP for each 9-1-1 call unless an alternative method of providing call location information has been approved. Learn more ...
Washington		For businesses with a physical area greater than 25,000 square feet, or occupying more than one floor or building, MLTS providers must ensure that ALI is provided for each telephone. Learn more ...