Current 911 MLTS Legislation

Twenty four states currently have E-911 legislation enacted or pending that requires organizations over a certain size or purchasing a new PBX to implement E911 for the safety of their employees, students, and visitors. On December 3rd, 2015  the" Kari's Law Act of 2015" affecting E911 for MLTS was introduced in the House of Representatives. On May 13, 2016 the Response Act of 2016 was proposed that would require the FCC to adopt rules within 18 months to ensure that call location information is conveyed with Multi-Line Telephone System 911 calls. 


Map Legend


(Click the state names below to view the state legislation bills in their entirety):

Alaska   Proposed regulations for multi-line telephone systems (MLTS) to be implemented with Enhanced 911 (E911), which includes automatic location identification (ALI) and automatic number identification (ANI), which provides at least the building and floor location of the caller.
Arkansas   A 911 call made by any company, or corporation, public or private, providing exchange telephone service shall forward to any public safety answering point (PSAP) equipped for Enhanced 911 (E911) service the telephone number and street address of any telephone.
California   Proposed legislation would require every telephone exchange service, competitive local exchange carrier, multi-telephone system (MLTS), private branch exchange system, key set system, Centrex, or similar system to provide Enhanced 911 (E911) service with automatic routing, automatic number identification (ANI), and automatic location information (ALI) or identification.
Colorado   Multi-line telephone system (MLTS) operators shall provide written information describing the proper method of dialing 9-1-1 from a MLTS telephone in an emergency. MLTS operators that do not give the automatic number identification (ANI), the automatic location identification (ALI), or both, shall disclose such fact in writing and instruct them to provide their telephone number and exact location when calling 911.
Connecticut   Companies can not prevent a 911 call from being made. However, the call can be directed to a security answering point on-site. A proposal has been indicated that would require shared multi-line telephone system (MLTS) operators serving residential customers to make sure that the system is connected to the public switch for in which a 911 call results in one distinctive automatic number identification (ANI) and automatic location identification (ALI), such as business locations and hotels.
Florida   Effective July 1, 2003, each private branch exchange (PBX) system installed after January 1, 2004, must be capable of providing automatic location identification (ALI) to the station level.
Illinois   After June 30, 2000, any entity that installs or operates a private business switch service and provides telecommunications facilities or services to businesses needs to make sure that the system is connected to the public switched network in a manner that calls to 9-1-1 result in automatic number identification (ANI) and automatic location identification (ALI).
Chicago (Illinois)   Provide a name to all private streets on the campus/complex, identify all buildings and/or structures, for each building and/or structure they must have a unique name, address, or identifier, and use the National Emergency Number Association (NENA) recommended abbreviations for street thoroughfares.
Kentucky   Effective July 15, 1998, residential private switch telephone service providers must make sure that their system provides an updated telephone number and physical location for each 9-1-1 call and provide the service providers with the location information.
Louisiana   Automatic location identification (ALI) must be capable of being transmitted to the station level in every PBX installed after January 1, 2005.
Maine   Any privately owned or leased telephone system shall provide the same level of enhanced 9-1-1 services that others receive, including: automatic number identification (ANI) signaling; station identification data; and updates to enhanced 9-1-1 databases.
Maryland   A Bill signed into law in May of 2015 requires any organization operating a multi-line telephone system to ensure that it is properly connected to the network in such a way that 9-1-1 can be dialed directly, without requiring any other number or set of numbers.
Massachusetts   As of July 1, 2009, any new or substantially renovated multi-line telephone systems (MLTS) such as Centrex, PBX and hybrid telephone systems, must provide the same level of enhanced 911 (E911) service that is provided to others in the Commonwealth. This includes but is not limited to businesses, apartments, townhouses, condominiums, schools, dormitories, hotels, motels, resorts, extended care facilities, or similar entities, facilities or structures.
Michigan   Providers of private switch equipment or services for organizations are required to ensure their system provides ANI and ALI for all outgoing 9-1-1 calls, no later than December 31, 2016. Location identification requirements are outlined.
Minnesota   For every private branch exchange (PBX) system purchased after December 31, 2004, must provide and maintain the system to provide a call back number and emergency response location for every 911 phone call made from private businesses, hotels, residential units, and educational institutions, including schools and colleges.
Mississippi   Service suppliers are required to provide access to the designated public safety answering point (PSAP) when dialing 911 where technically available. Any entity operating a “shared tenant service” is required to provide telephone number location information for each 911 call made from any extension. Also, any cellular telephone operating companies shall have all trunks or service lines contain the word “cellular” in the listing for calls placed to 911.
Nebraska   Although no details of multi-line telephone systems (MLTS) are listed yet, it does propose state wide enhancement of 911 by 2010.
Ohio   Bill introduced April of 2016 requiring direct access to 9-1-1 from a multi-line telephone system.
Pennsylvania   An owner or operator of a multi-line telephone system (MLTS) must ensure that calls to 911 provide automatic location identification (ALI) for each respective emergency response location (ERL) with a minimum of one per building/floor. Bill signed and passed into law in June of 2015.
Texas   Senate Bill 788 was signed into law in May of 2015 requiring direct dial access of 9-1-1 from all multi-line telephone systems. 

Tarrant County (Texas)   As part of computerized 911 service, a service supplier shall furnish for each call the telephone number of the subscriber and the address associated with the number. A business that owns or leases a publicly or privately owned telephone switch used to provide telephone service to facility residents must provide the same level of 911 service that a service supplier is required to provide.
Utah   This bill requires certain multi-line telephone systems (MLTS) to provide various location-related information for 911 calls made from telephones within the system. Address requirements for updating location-related information when a MLTS’s database changes.
Vermont   Privately owned telephone systems shall provide the same level of 911 services as it is to others in the area with automatic number identification (ANI) signaling, station identification data and updates to the data base for enhanced 911.
Virginia   All multi-line telephone system (MLTS) providers must maintain and operate the automatic number identification (ANI) and automatic location identification (ALI) to the local public safety answering point (PSAP) for 911 calls to all MLTS installed after July 1, 2009.
Washington    Automatic location identification (ALI) format for 911 calls must be present in businesses containing 25,000 sq ft, or more than one floor of a building, or businesses in multiple buildings.
Wisconsin   A bill proposed that requires Multi-Line Telephone System owners to provide location and callback information to the correct Public Safety Answering Point when a 911 call is placed. 


Square Footage Requirements by State


  • Alaska- Per Floor
  • Arkansas- No Square Footage Requirement 
  • Colorado- No Square Footage Requirement
  • Connecticut- Floor
  • Florida- Station Level
  • Illinois- 40,000 or per floor
  • Kentucky- No Square Footage Requirement
  • Louisiana- Station Level
  • Maine- No Square Footage Requirement
  • Maryland- No Square Footage Requirement
  • Massachusetts- 22,500
  • Michigan- 7,000
  • Minnesota- No Square Footage Requirement
  • Mississippi- No Square Footage Requirement
  • Pennsylvania- Building and floor location of caller
  • Texas- No Square Footage Requirement
  • Vermont- No Square Footage Requirement
  • Virginia- 7,000
  • Washington- 25,000 or per floor