GE Security EST3 - Page 75

Security applications
EST3 Installation and Service Manual 2.15
SDU
RPM
SITE A
EST3
system
SDU
RPM
SITE B
SITE C (HQ)
ACDB
KDC
SDU
RPM
EST3
system
EST3
system
Power supply
Other factors
Hardware configuration
SDU programming
ACDB/KDC operation
X
X
X
A
B
C
D1
D2
D3
D1
D2
D3
D1
D2
D3
T
Telephone lines
Site A
profile
Site B
profile
Site C
profile
Total resource
profile tree
Figure 2-5: Multiple site security and access control system
Hardware configuration
Each site must have an EST3 system. In each EST3 system, at
least one panel must include a 3-MODCOM module to support
modem communication between headquarters and sites A and B.
The KDC and ACDB programs can communicate with the EST3
system either by modem, or by direct connection to an RS-232
port on the CPU module.