Control Panels Telephone communications | en 45
Bosch Security Systems, Inc. Installation and System Reference Guide 2016.06 | 08 | F.01U.303.996
Figure7.6: PTSN module wiring
Callout á…³ Description
1 á…³ Premises telephone
2 á…³ Incoming Telco line
3 á…³ Installer telephone test set
4 á…³ RJ-45 phone connector
7.1.3 Diagnostic LEDs
The module uses a green LED to indicate when the module is on or off hook or the line is
ringing (incoming phone call).
Flash pattern Function
OFF Standby
ON Line seized
Flash Ringing detect (incoming phone call)
Tab.7.1: PTSN diagnostic LED patterns
7.2 Phone jack location
To prevent jamming of signals, wire the RJ31X or RJ38X jack before the premises telephone
system to support line seizure. Install the jack on the street side of the telephone switch,
wired ahead of any PBX equipment. Line seizure temporarily interrupts normal telephone
usage while the control panel sends data. After installation, confirm that the control panel
seizes the line, acquires dial tone, reports correctly to the receiver, and releases the telephone
line to the in-house telephone system.
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