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Appendix D: Communicator Format Options

Robofon Format

The control panel can use ROBOFON communication format to
transmit alarm messages to a receiver. When the panel acts as
the ROBOFON dialer, it can receive the following ASCII signals
using ODD parity:
HANDSHAKE:

77 Hex, actually received as F7 Hex.

ACK:

06 Hex, actually received as 86 Hex.

NAK:

15 Hex, actually received as 15 Hex.

The data is received by the receiver as 1000Hz tones at 20 ms/
bit. A “0” in the bit pattern represents tone on for 20ms, and a “1”
in the bit pattern represents tone off for 20ms. The data bytes are
transmitted least-significant-bit (LSB) first. The data is transmit-
ted in the following format:

•

6''''''''(;7&+.680

Where:

The panel will wait the programmed “Wait for Handshake” for the
initial handshake, it will wait 20 sec for any subsequent hand-
shake during the same phone call.

200 Baud FSK (CESA)

This format transmits with the LSB first in the data stream using 1
start bit, 8 data bits, and 2 stop bits (no parity).
The information transmitted is as follows:

• Five Digit Decimal Account Code
• One Digit Event Identifier
• Two Digit Zone Number (00-99)
• Eight Zeros (filler)

After the panel dials, this format looks for a 960 ms FSK hand-
shake at 1850 Hz for 15 ms, 1650 Hz for 15 ms, and 1850 Hz for
15 ms again repeated 32 times. The panel will proceed to send
its carrier by emitting 1180 Hz for a period of 800 ms to 1 second,
followed by the event utilizing 980 Hz for a Mark (1) and 1180 for
a Space (0) at 200 Baud. The panel will send the exact same
transmission twice in a row with a 600-800 ms pause. If the two
transmissions match exactly, the receiver will give acknowledge-
ment by giving the panel the same FSK pattern as the hand-

shake.

The panel can then hang up, or repeat the process

indefinitely until it has no further events to transmit.
In the event that the two transmissions do not match, the panel
will re-transmit the transmission once if no kiss-off is received
after three seconds. The panel will repeat this a total of five times
before counting the round as a failed attempt.

The Event Identifier can represent one of the following events:

• 0 = Talk/Listen Audio Event (any event type)
• 1 = New Event (Alarm, Tamper, Trouble, etc.)
• 2 = Event Restore (Alarm Restore, Low Battery Restore, etc.)

An option exists in Section [381] Option 5 ON that allows the
identifiers for 1 Arming (Closings) and 2 Disarming (Openings) to
be reversed.
The following is a list of what hex characters are actually trans-
mitted by this format and what numbers they represent:

NOTE:

The Talk/Listen Audio Event overrides any other Event

Identifier.

The first five digits of the Account Codes must be used for proper
operation.

Telephone Line Monitoring (TLM)

When the

TLM Enable

option is selected, the panel will super-

vise the telephone line and will indicate a trouble condition if the
telephone line is disconnected.
If the TLM Enable option is ON, the panel will check the tele-
phone line every 10 seconds. If the telephone line voltage is
below 3V for the number of checks programmed in the

TLM

Trouble Delay

section, the panel will report a TLM trouble. The

default number of checks is 10. Enter a number from (000) to
(255) in the TLM Trouble Delay section to change the number of
checks before the TLM trouble is reported. Programming a delay
means that a momentary interruption of the telephone line will
not cause a trouble condition.
If the

TLM Trouble Beeps When Armed

option is enabled, the

panel will indicate a TLM trouble at the keypad while the system
is armed. To activate the bell output in the case of a TLM trouble
while the system is armed, the

TLM Audible (Bell) When

Armed

option must be selected.

When the trouble condition is restored, the panel can send a

TLM Restoral

reporting code. Any events which occur while the

telephone line is down will also be communicated. If an alternate
communicator is being used, the panel can be programmed to
report a

TLM Trouble Reporting Code

Data

Description

+H[DVVWDUWVLJQDO

30 Hex, as the first digit of the account code.