Section 14. SYSTEM COMMUNICATION
This section provides an explanation of formats this system accommodates for reporting alarms and other system conditions to the central station. The process of a successful transmission consists of both the method of communication between the control panel and the central station receiver and the actual way the information is sent and displayed at the central station.
Report Code Formats
When the panel calls the central station receiver, it waits to hear a “handshake”frequency from the receiver to confirm that the receiver is
If the handshake frequency is not given or is not understood by the panel, the panel will not send its message. Once the handshake frequency is received and understood by the panel, the panel will send its message. If there is an error in the transmission (the receiver does not receive a “valid” message), the kissoff frequency will not be given by the central station receiver.
The panel will make a total of eight attempts to the primary telephone number and eight attempts to the secondary telephone number (if programmed) to get a valid message through. If the panel is not successful after its numerous attempts, the keypad will display “Communication Failure” (Alpha keypad) or “FC”
The following chart defines the three sets of (handshake/kissoff) frequencies that the panel supports and the different formats that can be sent for each.
FORMAT | HANDSHAKE | TRANSMITS DATA | KISSOFF | TRANSMIT TIME |
|
|
|
|
|
Low Speed | 1400Hz | 1900Hz (10PPS) | 1400Hz | Under 15 secs. |
3+1 |
|
|
| (Standard report) |
4+1 |
|
|
|
|
4+2 |
|
|
|
|
|
|
|
|
|
Sescoa/Rad | 2300Hz | 1800Hz (20PPS) | 2300Hz | Under 10 secs. |
3+1 |
|
|
| (Standard report) |
4+1 |
|
|
|
|
4+2 |
|
|
|
|
|
|
|
|
|
Express | DTMF (10 cps) | 1400Hz | Under 3 secs. | |
4+2 |
|
|
|
|
|
|
|
|
|
Contact ID | DTMF (10 cps) | 1400Hz | Under 3 secs. | |
|
|
|
|
|
The following describes each format in greater detail.
3+1 and 4+1 Standard Formats | Comprise a 3- (or |
| report code (e.g. Alarm, Trouble, Restore, Open, Close, etc.). |
|
|
3+1 and 4+1 Expanded Formats | Comprise a 3- (or |
| port code. The first digit is displayed on the first line, followed by |
| a second line where the first digit is repeated 3 (or 4) times and |
| followed by the second digit. This is the “expanded” digit. |
|
|
4+2 Format | Comprises a |
|
|
Ademco Contact ID | Comprises a |
Reporting Format | ("new" or "restore"), |
| user number, or system status number (see the following page). |
|
|
– 64 –