ICG JetPhone 4-Wire
The ICG JetPhone 4-Wire model is a rugged and durable corded handset installed frequently in general aviation and air transport applications. This device has a 4-Wire audio circuit (Tx pair and Rx pair) with a discreet hook signal and incoming ring signal. It is frequently used as a direct connection handset to a 4-Wire transceiver or as an attendant handset. It operates on 12- or 28-volt DC power, provided either by the aircraft or CTU. The 4-Wire JetPhone also has a PTT button to permit key-up of the aircraft PA system permitting in-flight announcements. Features such as a lit dialer pad, mute, noise reduction microphone and special function buttons make it particularly useful as a dual Interphone/Telecom handset. It is a suitable replacement for the WH-10 handset.