(1) A 911 system.

(2) A 911 service provider.

(3) A provider or communication service provider, including a provider of Next Generation 911 technology.

(4) An officer, director, employee, vendor or agent of an entity listed under paragraphs (1), (2) and (3).

(1) The release to PSAPs, providers of emergency notification services or providers of emergency support services of information authorized under this chapter, including nonpublished telephone numbers.

(2) The release to the Federal Communications Commission, the public utility commission, the board or any Federal or Commonwealth agency with the authority to regulate the provision of telecommunications services of telephone company information specified in this section that is not already part of public records, including information regarding the number of liens served by an individual company, except for nonpublic information regarding the company's individual customer names, addresses and telephone numbers.

(3) Interruptions, omissions, defects, errors, mistakes or delays in transmission occurring in the course of the delivery of 911 emergency services and other emergency services, including next generation 911 services under this chapter, unless the interruptions, omissions, defects, errors, mistakes or delays are caused by the willful or wanton misconduct of a person listed under subsection (b).

(4) Any other matter relating to the provision of 911 communications service or a 911 system.