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pre-wired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.
J2 DD
MPX
J1
DD
MPX
J3
PANEL
J4
MAIN
J5
BACKUP
P10
Factory pre-wired
to XR2500F panel
Phone Jack
Connector, J3
To Primary
telephone line
To Secondary telephone line
Communication Jumpers:
Both Set both Jumpers
Processor
Stopped Buzzer
Factory pre-wired
to XR2500F panel
J10 Connector

893A Dual Telephone Line Module

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congurethe893Atoprovidetwolinesofdigitaldialer.Maximumlineimpedanceis100Ohms.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
veries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.