34 — Installation & Programming Guide
Timed Break Recall (Star Services in UK).
The ‘Timed Break Recall’ service available on digital exchanges in many countries is
employed at the dial time if no dial tone is detected. This action requests a clear fresh line
from the exchange and overcomes the malicious or otherwise blocking of the telelphone
line.Any remote session will be terminated in the event of an alarm which requires a Tx
report.
Compatibilty with BT ‘RedCare’ lines.
The communicator can be succesfully used on BT RedCare lines due to the filtering out of
the STU ‘low tone’ at the receive filter stage.
Local Programming via user interface.
Configuration items can be locally programmed via the LCD keypad. When reporting alarm
conditions to the central station, requested items may take several seconds to be displayed
on the LCD display. This is not a fault, it ensures that alarm transmissions take priority over
other demands on system resources.
Locally initiated Testcalls.
This function is only available from an LCD keypad. An Alarm report comprising the current
dialler output status in the currently programmed format is initiated to the primary,
secondary and dual reporting telephone numbers in turn in the format programmed for that
telephone store. The result of test calls are entered into the event log.
High Speed ‘Point - ID’ Reporting.
This is an alarm reporting protocol which allows additional data to be transmitted to the
central station without resorting to a modem format. It uses DTMF transmission with a
message content significantly different from standard Fast Format protocols.
With normal alarm reporting, a single alarm code is transmitted to the central station when
one or several zones have been triggered. This method does not pinpoint the active
zone(s). With Point - ID each zone can be uniquely identified thus aiding the police to
investigate sources of alarms.
Guardall’s PS/002 Alarm Reporting.
It is possible to send Guardall PS/002 type alarm reports to a remote PC, MAS or
Guardstation system. This is a modem format which offers many advantages over
standard alarm messages.
Alarm data is sent in the form of an ASCII string containing the date, time, event identifier
and event status.
Remote Up/Download of Panel Settings and Event Logs.
It is possible to remotely access the panel by using a secure procedure and perform
engineering functions which would normally have required a site visit. These remote
functions include pin change, set/unset, event log download, etc.
Ademco Superfast Format
This is an enhancement to the standard fast format reporting and is user selectable as a
programmed option. The standard fast format protocol at the central station receiver
requires to see two identical messages before it accepts the message as valid ( a basic
method of error detection). The Superfast format sends the message only once, and relies
for it’s error detection on the appending of a suitable checksum digit to the message. This
offers both time and communication cost savings.
