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Any attempt to set up a communications circuit.
A unit of traffic measurement.
The actions performed by a call originator.
The operations required to establish, maintain, and release a connection.
To use a connection between two stations.
The action of bringing a computer program, subroutine, or variable into effect; usually by specifying the entry conditions and the entry point. In programming languages (such as C and C++) before subroutines and variables can be called, they must be declared.

References: Federal Standard 1037C, MIL-STD-188

In finance, a call option gives its owner the right to buy stock at a specified price in the future, as opposed to a put option.

Call in round dancing and square dancing is a command by a caller to execute a particular dance figure.

In poker to Call a bet means to equal the amount of poker chips in the pot as the player that bet.

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