Installation guide
Digital Monitoring Products XR2500F Installation Guide
8
INTRODUCTION
XR2500F Installation Guide Digital Monitoring Products
9
INTRODUCTION
893A Dual Phone Line Module
7.1 Description
The 893A is a dual telephone line supervision module that allows the panel to indicate a phone line failure
to the premises and the central monitoring station. After the 893A senses a failure on the main line, it
switches to the backup, or secondary, phone line. The 893A installs on the removable backplate above the
XR2500F circuit board.
7.2 Connection
The prewired 893A connects the panel to the public telephone network through an installed DMP 356 RJ
Cable between the XR2500F panel J3 connector and the 893A Module J3 connector labeled PANEL.
Figure 8: 893A Dual Phone Line Module Wiring
7.3 Jumper Settings
The 893A module has two sets of jumpers. Both communication jumpers must be set for DD (digital dialer)
operation. Do not set the 893A jumpers next to MPX. The 893A Module supports multiplex operation, but
the XR2500F panel does not.
7.4 Digital Dialer
You can congure the 893A to provide two lines of digital dialer. The XR2500F is preset at the factory for
Digital Dialer. The Main modular jack (J4) is used for the primary digital dialer line. The Backup modular
jack (J5) is used for the secondary digital dialer line.
7.5 Phone Line Monitor
The 893A uses a phone line monitor for the main and backup phone lines. When sending a report, the 893A
veries the main phone line is working before sending data. If the line is bad, the module tests the backup
phone line. The 893A sends the report on the rst working phone line.
The phone line monitor has a two-minute trouble delay and a one-minute restore delay. Phone line trouble
is displayed in the Fire Command Center LCD Status List as a System Trouble. The Fire Command Center
LCD is factory programmed to display system troubles in the Status List.
7.6 Processor Fail Buzzer
The 893A module also monitors the panel CPU and sounds a trouble buzzer whenever either the panel
processor is reset using J16 or the processor stops functioning.
7.7 J10 893A Connector
The 893A Dual Phone Line Module connects to the XR2500F J10. Refer to the 893A Installation Sheet
(LT-0135) for complete information.
7.8 Ground start
Ground start phone service cannot be used on commercial or residential re applications.