A. System FunctionThe communication system (the system) gives communication between the different parts of the aircraft and between the aircraft and ground stations.
B. Sub-systemsThe sub-systems of the system (also Ref. Fig. 1) are:
- Speech communications (Ref. 23-10-00)
- Very-High-Frequency (VHF) system (Ref. 23-11-00)
- High-Frequency (HF) system (Ref. 23-12-00)
- Mission communication system (Ref. 23-14-00)
- SATCOM system (Ref. 23-15-00)
- SELCAL system (Ref. 23-21-00)
- Airborne communications, addressing and reporting system (ACARS) (Ref. 23-22-00).
- Passenger address and entertainment (Ref. 23-30-00)
- Cabin audio system (Ref. 23-31-00)
- Interphone (Ref. 23-40-00)
- Audio integrating (Ref. 23-50-00)
- Static discharging (Ref. 23-60-00)
- Audio and video monitoring (Ref. 23-70-00)
- Cockpit voice recorder system (Ref. 23-71-00)
- Integrated automatic tuning (Ref. 23-80-00)