The process of evaluating the characteristics of a telephone call before a conversation. Some methods may include:

A mixed drink for which one specifies (i.e., calls) the exact brand or brands of liquor to be used.

A connection established over a telephone network between two parties. / The conversation held by the two parties on this connection.

(informal) A female prostitute who is hired by telephone. / (humorous) A woman who works as a call center agent. (see usage notes)

A date on which a callable bond may be redeemed before its maturity

To request someone's return. / To telephone someone again at a more convenient time. / To return to a shop or residence one has previously visited.

Request for a second interview or audition, following a successful initial interview.

(finance) Request by a stockbroker or similar for the client to deposit more money in order to cover losses that have built up in open positions held on margin (rather than having been paid for in full).

(transitive, idiomatic) To specify, especially in detail. / (transitive, idiomatic) To order into service; to summon into service. / (intransitive, transitive) To yell out; to vocalize audibly; announce.

(telecommunications) The delay that occurs when a call arrives at an automatic switching device and no channel or facility is immediately available to process the call.