Telephonics rhymes with:
phonics, audiotronics, avionics, centronics, conics, diasonics, electronics, electronics', endotronics, endotronics', fibronics, flextronics, harmonics, histrionics, ionics, lasersonics, lumonics, microelectronics, mnemonics, nucleonics, onyx, personics, philharmonic's, phonics, photronics, plantronics, respironics, sconnix, siliconix, sonics, tectonics, tektronix, telectronics, tonics, vitronics
Telephonics sounds like:
taliban's, talibans, telefonica, telefonos, telephone's, telephones, telephonic, telephoning, telephoniques