Regulation .06 Minimum Enhanced 9-1-1 System Requirements.

Sufficient incoming 9-1-1 lines for each telephone central office to ensure that not more than one in 100 call attempts during the average busy hour is blocked;

Connections to all public safety agencies covered by the system;

24 hour, 7 day operation of the public safety answering point staffed with personnel trained as required under this chapter;

First priority to answering 9-1-1 calls;

Electronic recording of all 9-1-1 calls;

Playback capability of all 9-1-1 calls;

Connection to adjacent public safety answering points by private lines when there is a telephone exchange and jurisdictional boundary not covered by selective routing;

Security measures sufficient to minimize intentional disruption of the operation;

Standby emergency electrical power to keep the public safety answering point operating when commercial power fails;

At least one administrative line for nonemergency calls;

Written operational procedures;

Automatic location identification (ALI), which displays, at the public safety answering point, the address or location of the calling instrument;

Automatic number identification (ANI), which displays, at the public safety answering point, the calling telephone number;

Central office identification used to identify dedicated lines or trunks from a central office when a public safety answering point serves more than one central office;

A distinct tone, visible signal, or other process for:

Providing access to services for an individual:

Other technical advances approved by the Board.