Telephoning

noun
1.
an apparatus, system, or process for transmission of sound or speech to a distant point, especially by an electric device.
verb (used with object), telephoned, telephoning.
2.
to speak to or summon (a person) by telephone.
3.
to send (a message) by telephone.
verb (used without object), telephoned, telephoning.
4.
to send a message by telephone.
noun
1.

Also called telephone set. an electrical device for transmitting speech, consisting of a microphone and receiver mounted on a handset
(as modifier): a telephone receiver

2.

a worldwide system of communications using telephones. The microphone in one telephone converts sound waves into electrical signals that are transmitted along a telephone wire or by radio to one or more distant sets, the receivers of which reconvert the incoming signal into the original sound
(as modifier): a telephone exchange, a telephone call

3.
See telephone box
verb
4.
to call or talk to (a person) by telephone
5.
to transmit (a recorded message, radio or television programme, or other information) by telephone, using special transmitting and receiving equipment