transitive. To connect (a telephone caller) to another via an exchange or operator; to divert or connect to a particular location. Also: to make or…

transitive. To make (a circuit) accessible to operators at more than one point on a switchboard or switchboards; to provide or employ duplicates…

transitive. Chiefly North American. To order or obtain a connection for (a telephone call), esp. through an operator.

transitive. Telecommunications. To direct (a call) to a destination, user, device, etc., on a telecommunication network.

To direct (a telephone link) through to a subsidiary receiver by means of a switch.

to camp on (trans.): to reserve (a telephone call) to another, engaged, telephone using a camp-on facility. Also absol. Cf. camp-on, n.