At a minimum, an enhanced 9-1-1 system implemented in Maryland shall include:

1. A. 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;
2. B. Connections to all public safety agencies covered by the system;
3. C. 24 hour, 7 day operation of the public safety answering point staffed with personnel trained as required under this chapter;
4. D. First priority to answering 9-1-1 calls;
5. E. Electronic recording of all 9-1-1 calls;
6. F. Playback capability of all 9-1-1 calls;
7. G. Connection to adjacent public safety answering points by private lines when there is a telephone exchange and jurisdictional boundary not covered by selective routing;
8. H. Security measures sufficient to minimize intentional disruption of the operation;
9. I. Standby emergency electrical power to keep the public safety answering point operating when commercial power fails;
10. J. At least one administrative line for nonemergency calls;
11. K. Written operational procedures;
12. L. Automatic location identification (ALI), which displays, at the public safety answering point, the address or location of the calling instrument;
13. M. Automatic number identification (ANI), which displays, at the public safety answering point, the calling telephone number;
14. N. 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;

15. O. A distinct tone, visible signal, or other process for:

    1. (1) Alerting the call taker that an incoming 9-1-1 call was disconnected; and
    2. (2) Receiving and displaying the telephone number with ANI and ALI information for a disconnected 9-1-1 call, when available;

16. P. Providing access to services for an individual:

    1. (1) With a speech or hearing disability; or
    2. (2) Who does not speak or understand the English language; and
17. Q. Other technical advances approved by the Board.

Authority: Public Safety Article, Title 1, Subtitle 3, Correctional Services Article, §2-109; Annotated Code of Maryland

Effective date:

Regulations .01—.12 adopted as an emergency provision effective June 2, 1980 (7:12 Md. R. 1128); adopted permanently effective October 11, 1980 (7:20 Md. R. 1884) (Originally Promulgated as COMAR 12.11.02)

Regulation .03F amended effective May 15, 1981 (8:10 Md. R. 878)

Regulation .04A amended effective August 13, 1984 (11:16 Md. R. 1393)

Regulation .09-1 adopted effective August 13, 1984 (11:16 Md. R. 1393)

Regulation .09-1B amended effective July 13, 1986 (13:14 Md. R. 1635)

Regulation .11A amended effective August 13, 1984 (11:16 Md. R. 1393)

Regulations .13 and .14 adopted effective August 2, 1982 (9:15 Md. R. 1515)

Chapter revised effective September 16, 1991 (18:18 Md. R. 2008)

Chapter revised effective January 1, 1996 (22:24 Md. R. 1899)

Regulation .01 amended effective July 15, 1996 (23:14 Md. R. 1010)

Regulation .02 amended effective February 24, 1997 (24:4 Md. R. 293)

Regulation .07D amended effective July 15, 1996 (23:14 Md. R. 1010)

Regulation .10B amended effective July 15, 1996 (23:14 Md. R. 1010)

Regulation .14D amended effective July 15, 1996 (23:14 Md. R. 1010)

Chapter revised effective March 9, 1998 (25:5 Md. R. 370)

Regulation .12A amended effective July 27, 1998 (25:15 Md. R. 1191)

Chapter revised effective October 8, 2007 (34:20 Md. R. 1740)