GE Security EST3 User Manual

Installation
EST3 Installation and Service Manual
5.30
details, activation of a dialer test signal, etc., are all a part of the
information that is downloaded into the nonvolatile memory of
the 3-MODCOM by the SDU.
The 3-MODCOM electronically dials receivers in the central
monitoring station (CMS) using either pulse or tone dialing, as
specified during configuration. The module dials the stored CMS
telephone number using the same digits that would be used if a
person were dialing from the premises with an ordinary
telephone.
Each time the 3-MODCOM sends test messages to the CMS, it
indicates whether the system is in a normal or abnormal state.
You can select which system states (such as alarm, trouble, or
monitor) represent an abnormal condition. This prevents the 3-
MODCOM from reporting an abnormal condition when the
system is in a state that occurs frequently as part of normal
system operation.
There are provisions for programming a periodic test
transmission to the CMS station on a one-minute to 45-day basis.
A daily test signal is primarily intended for certified installations,
and is mandatory for all fire alarm installations.
The 3-MODCOM sends messages in order of their priority.
Messages may include device and user ID information regarding
events, such as openings, closings, alarms, and tamper or trouble
events. The module waits for acknowledgement that each
message sent has been received. .Where necessary, the 3-
MODCOM can be configured to begin dialing without waiting
for a dial tone. This option is used in areas where the telephone
line has an absent or erratic dial tone.
Failover operation
You can create dynamic failover operation for 3-MODCOMs.
By dynamic failover we mean that in the event of a
communication failure or device trouble, the system switches
from accounts on one 3-MODCOM to matching accounts on
another 3-MODCOM.
Failover operation results in a system that is resistant to trouble
arising from telephone lines, 3-MODCOMs, or the CPU module.
The operation can be limited to a single panel, or can span two or
more panels anywhere in a network.
In systems with a single 3-MODCOM you can include a second
3-MODCOM that acts as a redundant unit. In systems with two
or more 3-MODCOMs, you can program the system so that the
units back up each other, while still handling their normal traffic.
Failover operates by enabling and disabling various accounts
defined for the project. On detection of a fault or trouble, project

GE Security EST3 Specifications

General

Brand	GE Security
Model	EST3
Category	Security Sensors
Language	English