Fire-Lite 411UDAC Fire Alarm Communicator - Manual (Page 54)

54 411UDAC Manual — P/N 51073:E 9/20/2013
Section 4: Central Station Communications
The 411UDAC transmits system status reports to Central Stations via the public switched telephone
network. Two supervised telephone line connections are made to interface the communicator to the
telephone lines. Two 7-foot telephone cords P/N MCBL-7 may be used for this purpose (not sup-
plied - order separately).
The digital communicator supervises both telephone lines for proper voltage. A delay of two min-
utes 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 turn on, the optional
trouble relay will activate if programmed for DACT trouble and the trouble condition will be
reported to a central station over the remaining good phone line.
The digital communicator comes with line seizure capability provided for both the primary and sec-
ondary telephone line interfaces. Any time that the DACT needs to make a call to a central station,
line seizure will disconnect any local premises phones sharing the same telephone line. All trans-
missions to central stations will be sent over the Primary Central Station 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 Sec-
ondary Central Station phone number. There are three options for transmission to the Central Sta-
tion:
• All reports are always sent to the Primary Central Station phone number with the Secondary
Central Station number for emergency backup purposes only
• All reports are sent to both Central Station phone numbers
• Reports are sent to the first available Central Station phone number only