47 C.F.R. § 68.3
As used in this part:
ACS telephonic CPE. Customer premises equipment used with advanced communications services that is designed to provide 2-way voice communication via a built-in speaker intended to be held to the ear in a manner functionally equivalent to a telephone, except for mobile handsets.
Advanced communications services. Interconnected VoIP service, non-interconnected VoIP service, electronic messaging service, and interoperable video conferencing service.
Demarcation point (also point of interconnection). As used in this part, the point of demarcation and/or interconnection between the communications facilities of a provider of wireline telecommunications, and terminal equipment, protective apparatus or wiring at a subscriber's premises.
Essential telephones. Only coin-operated telephones, telephones provided for emergency use, and other telephones frequently needed for use by persons using such hearing aids.
Harm. Electrical hazards to the personnel of providers of wireline telecommunications, damage to the equipment of providers of wireline telecommunications, malfunction of the billing equipment of providers of wireline telecommunications, and degradation of service to persons other than the user of the subject terminal equipment, his calling or called party.
Hearing aid compatible. Except as used at §§ 68.4(a)(3) and 68.414 , and subpart F of this part the terms hearing aid compatible or hearing aid compatibility are used as defined in § 68.316 , unless it is specifically stated that hearing aid compatibility volume control, as defined in § 68.317 , is intended or is included in the definition.
Inside wiring or premises wiring. Customer-owned or controlled wire on the subscriber's side of the demarcation point.
Premises. As used herein, generally a dwelling unit, other building or a legal unit of real property such as a lot on which a dwelling unit is located, as determined by the provider of telecommunications service's reasonable and nondiscriminatory standard operating practices.
Private radio services. Private land mobile radio services and other communications services characterized by the Commission in its rules as private radio services.
Public mobile services. Air-to-ground radiotelephone services, cellular radio telecommunications services, offshore radio, rural radio service, public land mobile telephone service, and other common carrier radio communications services covered by part 22 of Title 47 of the Code of Federal Regulations.
Responsible party. The party or parties responsible for the compliance of terminal equipment or protective circuitry intended for connection directly to the public switched telephone network, or of ACS telephonic CPE, with the applicable rules and regulations in this part and with any applicable technical criteria published by the Administrative Council for Terminal Attachments. If a Telecommunications Certification Body certifies the terminal equipment or ACS telephonic CPE, the responsible party is the holder of the certificate for that equipment. If the terminal equipment or ACS telephonic CPE is the subject of a Supplier's Declaration of Conformity, the responsible party shall be: The manufacturer of the equipment, or the manufacturer of protective circuitry that is marketed for use with terminal equipment that is not to be connected directly to the network, or if the equipment is imported, the importer, or if the equipment is assembled from individual component parts, the assembler. If the equipment is modified by any party not working under the authority of the responsible party, the party performing the modifications, if located within the U.S., or the importer, if the equipment is imported subsequent to the modifications, becomes the new responsible party. Retailers or original equipment manufacturers may enter into an agreement with the assembler or importer to assume the responsibilities to ensure compliance of the terminal equipment or ACS telephonic CPE and to become the responsible party.
Secure telephones. Telephones that are approved by the United States Government for the transmission of classified or sensitive voice communications.
Terminal equipment. As used in this part, communications equipment located on customer premises at the end of a communications link, used to permit the stations involved to accomplish the provision of telecommunications or information services.
47 C.F.R. §68.3