Adaptive Timed Dialling (Blind Dialling); Fail To Communicate - ADEMCO Galaxy 16 Engineer's Manual

Adaptive Timed Dialling (Blind Dialling)

On Activation of an alarm condition requiring to be signalled by the digi the
panel snatches the line and checks for the presence of a dial tone. If the dial
tone is not detected the dialling is initiated regardless.
If the Dial Tone Line Fail is enabled the line fault is indicated to the control
panel and the Bell Delay parameter is overridden.
If the Dial Tone Line Fail is disabled the line fault is not indicated to the control
panel and the Bell Delay parameter is not overriden. The Bell Delay parameter is
not overriden until a Fail to Comm event is recorded in the event log.
For more information on Bell Delay see
Parameters; 08 Bell Delay
For more information on Fail to Comm see

3 Fail to Communicate

This option determines the number of unsuccessful communications attempts
COMM FAIL
before the
Note: The number of dialling attempts to each telephone number is not affected
by this option. The number of dialling attempts is non-programmable and
is set to five.
When the Galaxy 16 plus dials it snatches the telephone line and dials the
programmed telephone numbers. After a successful communication the LED
lights for three seconds, the communicator releases the telephone line and
reconnects any serially connected equipment. This procedure is repeated for
the second telephone number if the Receiver menu option has been pro-
grammed as Dual.
Note: The Galaxy 16 plus communicator snatches and holds the line until a
successful attempt has been made to the required telephone numbers or
all five attempts to each number have been tried.
If the communication attempt is unsuccessful, the LED flashes rapidly for three
seconds. The communicator then waits for a short period before redialling the
number (or the second telephone number if the Receiver option has been
programmed as Dual or Alternative). If the Fail To Communicate option is left at
the default setting of three and the first three dialling attempts are unsuccessful
the Comm Fail message is recorded in the event log.
The panel then tries another two times, if the next two attempts (five attempts in
total) are unsuccessful, the alarms to be transmitted are erased from the buffer.
This conforms with the repeat attempts procedure as detailed in the BABT
requirements BS6789, 1985, Section 3-1, Paragraph 7.
Note: If the Receiver option is programmed as Dual (refer to
Communications 1; 5 Receiver; 2 Dual
must be made to both telephone numbers. Five unsuccessful attempts to a
single telephone number prevents the communicator from transmitting
any alarm events for two hours.
13 = Communications 2 (cont'd)
Section 5: MENU OPTIONS; Option 6 –
.
message is recorded in the event log.
95
3 Fail to Communicate
) then a successful transmission
.
Option 12