Illinois Administrative Code
Title 83 - PUBLIC UTILITIES
Part 725 - STANDARDS OF SERVICE APPLICABLE TO 9-1-1 EMERGENCY SYSTEMS
Subpart D - STANDARDS OF SERVICE
Section 725.410 - Telecommunications Carriers
Current through Register Vol. 48, No. 12, March 22, 2024
a) Each telecommunications carrier shall file tariffs under Section 13-900.1 of the Public Utilities Act for 9-1-1 telecommunications service to be applied to all services specific to 9-1-1 installations on the carrier's network side of the customer demarcation point.
b) Dedicated redundant facilities should be considered to be the standard method of providing all incoming 9-1-1 facilities and, when possible, employ diverse routing. 9-1-1 circuits and facilities shall be sufficient to complete 99% of all requests for emergency services during the average busy hour of the average busy day. In all cases, the 9-1-1 network shall be provisioned to handle a minimum of two circuits and/or simultaneous calls, and shall use dedicated, diverse and/or redundant equipment, when available, in order to increase the survivability of the 9-1-1 network. Additionally, the Commission 9-1-1 Program Staff and/or 9-1-1 authority may, on an annual basis or in the event of a problem, request traffic studies or other documentation to verify that the standard is being met.
c) Coin-free dialing of the digits 9-1-1 shall be provided from all coin telephones within an exchange with 9-1-1 service.
d) The transmission grade of service on 9-1-1 facilities using inter-exchange facilities shall be at least equivalent to the transmission grade of service specified in 83 Ill. Adm. Code 730.520 or 737.440 dealing with interoffice transmission objectives.
e) The transmission grade of service for the intra-exchange loop portion of any 9-1-1 facilities shall be at least equivalent to the transmission grade of service specified in 83 Ill. Adm. Code 730.525 or 737.630 dealing with local loop transmission objectives.
f) When all 9-1-1 facilities are busy in the originating central office, the switching facility, when equipped to provide the function, shall route the caller to an announcement or busy tone. When an all trunks busy situation occurs in an intermediate switching facility, that switch shall, when equipped, route the caller to an appropriate backup or alternate answering location, announcement, or busy tone.
g) All telecommunications carriers shall arrange for each of their switching offices to accept the 9-1-1 code.
h) Telecommunications carrier's personnel shall notify the 9-1-1 authority a minimum of 48 hours prior to performing any planned action that could adversely affect 9-1-1 service.
i) Each telecommunications carrier shall adopt practices to minimize the possibility of service disruption on all facilities associated with 9-1-1 service to a 9-1-1 system. These practices will provide for facility guarding at all terminations with protective devices that will minimize accidental worker caused service interruption. These practices shall also contain procedures for physical identification of all 9-1-1 facilities with special warning tags and/or labels and identification of circuits in company records.
j) Each telecommunications carrier shall deliver 9-1-1 service elements for the provisioning and ongoing maintenance of the 9-1-1 systems as follows:
k) Each telecommunications carrier and interconnected VoIP provider shall adopt practices and procedures to deliver emergency calls to the appropriate 9-1-1 system provider.