Code of Maine Rules
65 - DEPARTMENT OF PUBLIC UTILITIES COMMISSION
625 - EMERGENCY SERVICES COMMUNICATIONS BUREAU
Chapter 2 - REQUIREMENTS FOR THE ENHANCED 9-1-1 SYSTEM SERVICE PROVIDER AND LOCAL EXCHANGE CARRIERS
Section 625-2-4 - NETWORK TRUNKING AND CONNECTIVITY REQUIREMENTS
Universal Citation: 65 ME Code Rules ยง 625-2-4
Current through 2024-38, September 18, 2024
A. General Network Requirements for the SP and LECs
1. The 9-1-1 trunks on the
E9-1-1 network shall be dedicated facilities that are not shared with any other
telecommunications traffic, i.e., trunks carrying 9-1-1 traffic between the
Central Office and the E9-1-1 tandems.
2. All telephone circuits or equipment used
exclusively for 9-1-1, or essential to the operation of the E9-1-1 system,
shall be clearly identified (beginning with the trunks from the Central Office
to the Selective Router) to insure proper handling. This requirement applies to
equipment accessible as of the effective date of the rule and any equipment
installed or repaired after the effective date of the rule.
3. Any entity connecting to the Maine E9-1-1
network shall ensure that the 9-1-1 trunks will have interoffice, loop and
carrier system diversity when such diversity can be achieved using existing
facilities. Trunks shall be divided as equally as possible across available
carrier systems.
B. Requirements of LECs
1.
Connecting to the E9-1-1 Network
a.
Trunks. Each LEC shall
provide a minimum of two redundant trunks using SS7 to each of the two
selective routers (tandems). The number of incoming E9-1-1 trunk lines to each
selective router shall be based upon a grade of service of P.01. Diverse routes
should be used when possible within the existing network.
b.
Certification and Compliance.
Each LEC shall certify annually to the Bureau that it meets the P.01 grade of
service. If P.01 grade of service is not being met, the Bureau may request the
LEC to conduct a traffic study. The Bureau, in cooperation with the SP and LEC,
will determine the required trunking increases to meet the P.01 grade of
service. The LEC shall implement any trunking increases within 60
days.
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