411 Communicator Document #50921 Rev. E 12/09/2008 P/N 50921:E 11
Digital Communicator Operation
411 Piezo Sounder
• The 411 piezo sounder is used to locally annunciate DACT troubles. DACT troubles include input channel
open circuit, phone line 1 or 2 voltage fault, phone number 1 or 2 communication fault, total communication
failure and communications disabled.
Front Panel Indicator
• Communication Fail - yellow LED
1.5 Digital Communicator Operation
The 411 has been designed to be compatible with a wide variety of fire alarm, nonfire and combination control
panels. Numerous formats are also available for communication to a central station. Two modular phone jacks allow
easy connection to telephone lines. Modular jacks are labeled PH1 and PH2 for the Primary and Secondary phone
lines. The digital communicator provides the following functions:
• Line Seizure- takes control of the phone lines, disconnecting any premises phones using the same lines
• Off/On-Hook - perform on and off-hook status to phone lines
• Listen for dial tone - 440 hertz tone typical in most networks
• Dialing the Central Station(s) phone number - default is Touch-Tone®, programmable to rotary
• Discern proper Central Station 'ACK' and 'Kiss-off' tone(s)
• Transmit data to the Central Station(s)
• Verify data has been accepted by the Central Station(s)
• Hang-up and release phone lines
• Communicate in a variety of formats (Refer to Table 4-1, “Format Selection Addresses ( 20 and 50) Program-
ming,” on page 39).
1.6 Telephone Requirements and Warnings
1.6.1 Telephone Circuitry - PH1 & PH2
DC Ringer Equivalence Number (REN) = 0.5B
AC Ringer Equivalence Number = 1.3
Complies with FCC Part 68
Mates with RJ31X Male Connector
Supervision Threshold: less than 4.0 volts for 2 minutes
The REN is used to determine the quantity of devices which may be connected to the telephone line. Excessive
RENs on the telephone line may result in the devices not ringing in response to an incoming call. In most, but not all
areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be con-
nected to the line, as determined by the total RENs, contact the telephone company to determine the maximum REN
for the calling area.
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