Aiphone GT SYSTEM Installation Manual page 6

1-3 Residential station configuration
For wiring from the control units to each residence, station-to-station wiring or star wiring using a 4-way video junction unit is possible.
Mixing on the same trunk line is not possible.
Audio signal line (1)
Video signal line (1)
Power supply line (1)
Trunk line #1
Each Each
residence residence
Each Each
residence residence
Homerun wiring
4-way video junction unit
GT-4Z
Each
residence
4-way video junction unit
GT-4Z
Each
residence
Trunk line #2
Station-to-station wiring
Each
residence
Each
residence
To each control unit
- 6 -
Trunk line #3 to #6
Each
residence
Each
residence
Each
residence
Each
residence