dial-in

Etymology
.

Adjective

 * 1) Of a system or service: accepting incoming connections over a telephone line.
 * You can access your messages via Option 3 of our dial-in service menu.
 * 1) Of a radio or television program:.
 * 2)  Of a computer, set up to accept incoming modem calls.
 * 3)  Dial-up.

Usage notes

 * When used as an adjective, hyphenated; when used as a verb, unhyphenated.
 * Use as a synonym for is proscribed, as dial-up consists of outgoing calls (a network client), not incoming calls (a network server).

Noun

 * 1) The act of connecting to a system or service by means of a telecommunication network.
 * 2)  A driver's estimate of the time required to reach and cross the finish line, used to determine the head start for each vehicle.
 * 1)  A driver's estimate of the time required to reach and cross the finish line, used to determine the head start for each vehicle.