Fire-Lite IPDACT Installation Manual - Manual (Page 39)

IPDACT Module - Configuration
IV-36
Doc.Dm373-I
Rev. 2.0
Interval between retries to send keep-alives (seconds) for the backup
Time interval between sending keep-alive frames when a possible connectivity
problem with the backup VisorALARM IP receiver has been detected.
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 sends an alarm to the Teldat VisorALARM to
ensure that this receives the alarm and sends an acknowledgement to the
IPDACT. Connection with the main IP receiver is considered lost once this
number of retries has been completed, in which case the IPDACT is forced into
backup and once again tries to send to the backup receiver. If the IPDACT
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 y
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. If this fails, the panel does not need to try again in order to
force the IPDACT to send the previous alarm to the backup VisorALARM as the
IPDACT 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 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 is negligible as this can be counted in milliseconds.