Ten-digit telephone lines

(a) Each public safety answering point and private safety answering point shall maintain at least one published ten-digit telephone number to be used to communicate with local public safety agencies and for receipt of incoming emergency calls transferred to the public safety answering point or the private safety answering point by a telephone company operator. (b) Each public safety answering point and private safety answering point shall maintain at least two unlisted and unpublished (generally not available) ten-digit telephone circuits to be used to communicate with local public safety agencies and other public safety answering points and for receipt of incoming emergency calls from central station alarm companies or incoming calls rerouted by the next generation 9-1-1 telecommunication system.