1) Like some communication 2) Of or relating to telephony 3) Telecom 4) Telecommunication 
• (a.) Of or pertaining to the telephone; by the telephone. • (a.) Conveying sound to a great distance.
Tel`e·phon'ic adjective [ Confer French téléphonique . See Telephone .] 1. Conveying sound to a great distance. 2. Of or pertaining to the telephone; by the telephone. 
[adj] - of or relating to telephony
telephonic Transmitting, or relating to the transmission of, sound to a distance.
adjective of or relating to telephony; `telephonic connection`