Telephonic

1. (a.) Conveying sound to a great distance.

2. (a.) of or pertaining to the telephone; by the telephone.

Thesaurus Entries

Teletype, Wirephoto, communication, communicational, communications, facsimile, magnetotelephonic, microtelephonic, monotelephonic, phototelegraphic, radio, radiotelegraphic, signal, telecommunicational, telegraphic, telephotographic, thermotelephonic, wireless