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MLTS E 911 logo - links to advisory brochure  MLTS: E911 Requirements for Service Providers of Multi-Line Telephone Systems

Carrier Requirements per Decision (D.)13-07-019

Carrier Customer Education Requirements

By November 14, 2013, all local exchange carriers must: 

(1) distribute to existing MLTS customers the customer advisory brochure (PBX 9-1-1 Advisory), accessible by clicking the MLTS logo below, and any applicable updates, or a brochure with the same essential information; 

(2) begin distributing the PBX 9-1-1 Advisory brochure and any applicable updates, or a brochure with the same essential information, to their current and prospective customers when those customers initiate MLTS services and/or request information on Multi-line Telephone System (MLTS) Enhanced 9-1-1;

(3) place the MLTS logo shown below on their webpage to be used as the icon that directly links to the PBX Advisory Brochure on the Commission’s webpage.

MLTS E 911 logo link should go to

Again, this logo, when clicked from service provider’s webpage, should link directly to the PBX brochure approved during the proceeding. The URL for that link is:

Information for MLTS Users

Carrier Tariff Requirements

By November 14, 2013, all local exchange carriers with existing local access and/or 9-1-1 tariffs must:

(1) include in their local access tariff  language that informs customers of the option to provision more accurate 9-1-1 caller Multi-line Telephone System phone station information that can be sent to Public Safety Answering Points and that it is the customer’s responsibility to provide and maintain accurate and complete phone station location information in the 9-1-1 database; and

(2) review, revise and update their 9-1-1 tariffs such that their current and prospective MLTS customers are fully informed of options for provisioning accurate caller location information.

The Decision’s recommended language for these requirements is included below.  If you do not want to use this sample text, the Decision requires that the text be generally consistent with the recommended language. 

It is the customer’s responsibility to provide, and update if necessary, accurate Automatic Number Identification (ANI) and Automatic Location Identification (ALI) sub-address information to the 911 database administrator.  Once the customer provides ANI and ALI sub-address information to the 911 database administrator, it is the responsibility of the Utility (or Company) to provide the location of the pilot number to the PSAP for 911 calls, and where technically and operationally feasible the Utility (or Company) will deliver ANI to the PSAP at a station level behind a Multi-line Telephone System. 

These tariff requirements can be met by filing a Tier 1 Advice Letter with Commission’s Communications Division.

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Last Modified: 7/29/2015

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