Panasonic VL-V900 Installation Manual page 31

Wiring
3
3-3. Large system example 2 (with Extension Box)
Lobby Station 18 units
Extension Box 3 units
Control Box 1 unit
Distribution Box 28 units
Main Monitor 560 units
Lobby Station
VL-V900
4 branches x 7 series connections x 20 dividers = 560 units
Extension Box
VL-V703
Control Box
VL-V700
Distribution
VL-V701
1-7
2-7
3-7
4-7
29