Switch: A local telephone company switching system where telephone exchange service customer station loops are terminated for purposes of interconnection to each other and to trunks through electronic services which are used to provide circuit routing and control.

Switched Access Service: Provides the ability to originate and terminate calls between two end user's premises over facilities of the telephone company.

Telecommunications: The transmission of voice communications or, subject to the transmission capabilities of the service, the transmission of data, facsimile, signaling, metering, or any other form of intelligence over dedicated or switched facilities.

Terminal Equipment: Devices, apparatus, and their associated wiring such as teleprinters, telephone hand sets, or data sets used for origination or termination of telecommunications services.

Third Party Call: A call for which charges are billed, not to the originating telephone number, but to a third party telephone number which is neither the originating nor the terminating telephone number.

Vertical Features: Services such as call validation, "Plain Old Telephone Service" (POTS) number translation, and provision of statistical information on the Customer's 800 traffic, which may be obtained by the Company from Local Exchange Carrier�s access tariffs on behalf of 800 Service Customer for which the Company serves as Resp. Org.

Voice-Grade Channel: Denotes a communications channel with a nominal bandwidth of 4,000 hertz.

Weekday: One of the normal business days of the week Monday through Friday, excluding Holidays and Weekend periods.

Weekend: The period from 11 p.m. Friday to, but not including 8 a.m. Monday.

WATS: Wide Area Telecommunications Service.