"Access lines" are defined to include residence and business telephone lines and other switched (packet or circuit) lines connecting the customer premises to the public switched telephone network for the transmission of outgoing voice-grade-capable telecommunications services. Centrex, PBX or other multistation telecommunications services will incur an E-911 tax charge on every line or trunk (Network Access Registrar or PBX trunk) that allows simultaneous unrestricted outward dialing to the public switched telephone network. ISDN Primary Rate Interface services will be charged five E-911 tax charges for every ISDN Primary Rate Interface network facility established by the customer. Other channelized services in which each voice-grade channel is controlled by the telecommunications provider shall be charged one tax for each line that allows simultaneous unrestricted outward dialing to the public switched telephone network. Access lines do not include local, state, and federal government lines; access lines used to provide service to users as part of the Virginia Universal Service Plan; interstate and intrastate dedicated WATS lines; special access lines; off-premises extensions; official lines internally provided and used by providers of telecommunications services for administrative, testing, intercept, coin, and verification purposes; and commercial mobile radio service.
"Automatic location identification" or "ALI" means a telephone network capability that enables the automatic display of information defining the geographical location of the telephone used to place a wireline 9-1-1 call.
"Automatic number identification" or "ANI" means a telephone network capability that enables the automatic display of the telephone number used to place a wireline 9-1-1 call.
"Centrex" means a business telephone service offered by a local exchange company from a local central office; a normal single line telephone service with added custom calling features including but not limited to intercom, call forwarding, and call transfer.
"Communications services provider" means the same as provided in § 58.1-647.
"Enhanced 9-1-1 service" or "E-911" means a service consisting of telephone network features and PSAPs provided for users of telephone systems enabling users to reach a PSAP by dialing the digits "9-1-1." Such service automatically directs 9-1-1 emergency telephone calls to the appropriate PSAPs by selective routing based on the geographical location from which the emergency call originated, and provides the capability for ANI and ALI features.
"ISDN Primary Rate Interface" means 24 bearer channels, each of which is a full 64,000 bits per second. One of the channels is generally used to carry signaling information for the 23 other channels.
"Network Access Register" means a central office register associated with Centrex service that is required in order to complete a call involving access to the public switched telephone network outside the confines of that Centrex company. Network Access Register may be incoming, outgoing, or two-way.
"PBX" means public branch exchange and is telephone switching equipment owned by the customer and located on the customer's premises.
"PBX trunk" means a connection of the customer's PBX switch to the central office.
"Public safety answering point" or "PSAP" means a communications facility equipped and staffed on a 24-hour basis to receive and process 911 calls.
For the purposes of this subsection, the terms "customer" and "place of primary use" shall have the same meanings provided in § 58.1-647.
Va. Code § 58.1-1730