Document #15140 Rev.G 01/02/02 P/N 15140:G
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Central Station Communications
4.4
Central Station Communications
The control panel transmits zone and system status reports to Central Stations via the public switched telephone net-
work. Two supervised telephone line connections are made to interface the control panel to the telephone lines. Two
optional 7 foot telephone cords are available for this purpose and can be purchased separately.
The control panel supervised both telephone lines for proper voltage. A delay of two minutes will occur before a
fault in either phone line connection is reported as a trouble. When a fault is detected, an audible trouble signal will
sound, the yellow trouble LED will blink, the 4-character display will show either 'no 1' (primary line fault) or 'no 2'
(secondary line fault) and the trouble condition will be reported to the Central Station over the remaining operational
phone line.
The control panel comes with line seizure capability provided for both the primary and secondary telephone line
interfaces. Any time that the control panel needs to make a call to a Central Station, line seizure will disconnect any
local premises phones sharing the same telephone line.
All transmissions to the Central Stations will be sent over the primary phone line. In the event of noisy phone lines,
transmissions will be sent over the backup secondary phone line.
Two phone numbers must be programmed, the primary Central Station phone number and the secondary Central Sta-
tion phone number. All system reports will be transmitted to the primary Central Station phone number. Reports will
automatically be sent to the secondary Central Station phone number if attempts to transmits to the primary Central
Station phone number are unsuccessful. If 10 total attempts to communicate are unsuccessful, the Communicator
Failure output will be turned on (TB4, Terminal 6). Note that as an option,
all
reports may also be sent to the second-
ary Central Station phone number.
The MS-5024UD meets NFPA 72 National Fire Code reporting requirements for: (a) the type of signal, (b) condition
and (c) location of the reporting premises. The general priority reporting structure is:
1.
Zone Alarms and Restores
2.
Zone Troubles and Restores
3.
System Troubles and Restores
4.
24-hour Test
