An instrument that converts voice and other sound signals into a form that can be transmitted to remote locations and that receives and reconverts waves into sound signals.
verb: -phoned, -phon·ing, -phones.
transitive verb
To speak with (a person) by telephone.
To initiate or make a telephone connection with; place a call to.
To transmit (a message, for example) by telephone.
intransitive verb
To engage in communication by telephone.
derivatives
teĺe·phońer
noun
The American Heritage® Dictionary of the English Language, Fourth Edition