. . . . . . . "tions to a point or between or among points by or through any electronic, radio, satellite, cable, optical, microwave, wireline, wireless or other medium or method, regardless of the protocol used; (b) the ability to provide two-way voice communication on the public switched network; (c) wireless enhanced 911 service; (d) wireline enhanced 911 service; (e) interconnected VoIP provider service as d" . . . .