8-1
SECTION 8
Central Station Reporting Formats
•••••••••••••••••••••••••••••••••••••••••••
General Information
This security system is designed to transmit data to a central station receiver when an alarm, system
trouble, or an opening/closing occurs. Due to the many different types of CS receivers in the market,
this system can transmit data in various formats. Each installing company determines which format
best suits its needs based on many factors. Of these, the CS receiver type is a major factor.
In transmitting data to the CS receiver, first the system's digital communicator seizes the home phone
lines. Then it dials the CS#1 telephone number. When the CS receiver picks up the ringing phone line,
it transmits a “Handshake” frequency (1400Hz, 2300Hz or HiLo) back to the digital communicator.
After receiving the “Handshake” frequency, the digital communicator transmits the data in the format
programmed in Submode 1, Question 10, L1–L4. Assuming the CS receiver verifies the data
transmission as valid (after 2 successful rounds of data or 1 valid parity round), it transmits a “Kissoff”
frequency back to the digital communicator. This causes the communicator to stop transmitting, unless
more data is available, in which case additional data transmissions and “Kissoffs” occur. After the final
“Kissoff,” the CS receiver releases the phone line and processes the data to its display and associated
peripherals (computer and printer). If for any reason the digital communicator does not receive the
“Kissoff,” it proceeds to dial the CS#2 telephone number or re-dials the CS#1 telephone number (if
CS#2 is not used). It will continue to dial for a programmed number of times until a “Kissoff” is
received. If after all programmed dialing attempts to each CS Telephone number, a “Kissoff” is not
received, the system will display “Communication Failure” at the keypad. This message is cleared after
the next successful transmission or by the user at the keypad.
The following is a general description of the various formats transmitted by this system.
Standard (3x1 or 4x1)
The Standard Reporting Format: AAA E or AAAA E where:
AAAA = Three- or four-digit account number
E = Single-digit event code; it is the first of the 2 programmable reporting code digits
Standard format is transmitted in Pulse, and involves a 3- or 4-digit account number followed by a
single-digit event code. It can be transmitted with parity (1 round of data) or without parity (2 rounds
of data). A disadvantage of this format is that it can transmit a total of only 15 event codes (0–9, B–F)
without identifying zones or users. Examples:
3x1 w/o PARITY 3x1 w/PARITY
123 3 (1st round) 123 3 6 (single round)
123 3 (2nd round) 123 3 (resulting data)
123 3 (resulting data)
To Next Page
Loading...
Need help?
General