Fire-Lite IPDACT-2 - Manual (Page 33)

IPDACT-2(UD) - Configuration
III-30
Doc.DM385-I
Rev. 4.0
The register consists of one 1-digit field. This is expressed in seconds and
admits values between 3 and 9.
This field contains one verification digit for the number. Default value is 3.
Number of digits for a telephone number
This is the number of digits containing the telephone number which the control
panel must dial to carry out a call. Depending on the country, if there is a
switchboard, etc.
This register is composed of one 2-digit field. Admits values between 1 and
15. The field contains a verification digit for the number. Default value is 9.
Alarm sending retries (ALARM_RETRIES)
Number of times that the IPDACT-2(UD) sends an alarm to the Teldat
VisorALARM to ensure that this receives the alarm and sends an
acknowledgement to the IPDACT-2(UD). Connection with the main IP
receiver is considered lost once this number of retries has been completed, in
which case the IPDACT-2(UD) is forced into backup and once again tries to
send to the backup receiver. If the IPDACT-2(UD) doesn’t succeed in
communicating with the backup after all the retries have been executed, the
telephone relays switch to allow the control panel to send the alarm over the
telephone line.
The register is made up of one single digit field. This admits values between
5 and 10. The field contains a verification digit for the number. Default value
is 5.
It is essential to consider what effect the number of alarm send retries
parameter configured in the panel has. The first attempt from the panel
activates alarm send through the IPDACT-2(UD). If this fails, the panel does
not need to try again in order to force the IPDACT-2(UD) to send the previous
alarm to the backup VisorALARM as the IPDACT-2(UD) does this
automatically. However, the panel is responsible for backup over the
telephone line should there be IP connectivity failure, i.e. the number of retries
must be high enough so once these have been completed with both the main
and backup VisorALARMs, the panel takes over the process of sending the
alarm over the telephone line.
This means that the time between the first and the last attempt by the panel to
send an alarm must be greater than the number of alarm sending retries
programmed in the IPDACT-2(UD) by 2 seconds (time between retries) and
moreover twice, given that the same number of retries are executed with the
backup VisorALARM. The time used in the rest of the operations carried out
by the IPDACT-2(UD) is negligible as this can be counted in milliseconds.