Panasonic VL-V900 Installation And Operating Instructions Manual page 5

Fully expanded system with extension box example
Lobby Station
(up to 18)
Security camera, access
controller, electric lock
(1 each for each lobby
station)
Lobby station 1 group
Extension Box
x 6
Lobby station 2 group
x 6
Lobby station 3 group
x 6
Lift Controller (up to 15)
(3 branches x 5 lift controllers)
Lift
(up to 3)
*1 When the lobby stations are connected to extension boxes:
– Main monitors cannot monitor the outside with the lobby stations.
– When receiving an incoming call from a lobby station, the images from lobby stations are displayed in the
main monitors of the room units, and the lobby station group number of the lobby station is displayed in the
image. With the VL-MVN511 for example, if images from a lobby station in lobby station group 1 are displayed,
is displayed in the image.
1
Distribution Box (up to 28)
(4 branches x 7 distribution boxes)
Control Box (1)
(4 distribution
box branches,
3 lift controller
*1
(3)
branches)
Terminal
(up to 4)
(20 room units x 28 distribution boxes)
Repeater (up to 4)
Repeater
TV monitor (1)
PBX (1)
Emergency
Terminal (1)
1. Introduction
*1
Room units (up to 560)
. .
. .
. .
. .
. .
PC (1)
(programming)
5