13.2 Description of terminals
13 TECHNICAL DATA
CS
cameras selection control
VS
stabilized v12 V
T
digital transmission
GS
mass of stabilized voltage
SP
loudspeaker
GA analogue mass
MC microphone
L+ uniphone line
L-
uniphone line
LM master line (for connecting the main exchange)
NC free terminal (e.g. for connecting two wire sections)
B+ connection of accumulator (+)
B-
connection of accumulator (–)
External panel
XZ
electro-catch (output)
GZ
electro-catch supply input (mass)
VZ
electro-catch supply input (+12V DC)
PR
door opening pushbutton
T
digital transmission
VS
el. supply of the cassette digital part
GD digital mass (display system)
MC microphone
MG mass of microphone
SP
loudspeaker
SG
mass of loudspeaker
C+ video signal output (symetric)
C-
video signal output (symetric)
Uniphones
L+ uniphone line
L-
uniphone line mass
BR control of entrance gate drive
CVR-1
T+, T- universal outputs
L+, L-
digital-analogue line
C+, C- video output
VC
supply (+)
GND
mass
50