Fire-Lite IPDACT-2UD Technical Reference - Manual (Page 28)

IPDACT-UD - Configuration
III-25
Doc.DM385-I
Rev. 2.0
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-UD sends an alarm to the Teldat
VisorALARM to ensure that this receives the alarm and sends an
acknowledgement to the IPDACT-UD. Connection with the main IP receiver
is considered lost once this number of retries has been completed, in which
case the IPDACT-UD is forced into backup and once again tries to send to the
backup receiver. If the IPDACT-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-UD. If this fails, the panel does not
need to try again in order to force the IPDACT-UD to send the previous alarm
to the backup VisorALARM as the IPDACT-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-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-UD is negligible as this can be counted in milliseconds.
DHCP Client activation/deactivation
The DHCP client is a device functionality permitting a DHCP server to assign
an IP address and mask to the Ethernet interface plus an output gateway.
The majority of the ADSL routers have a DHCP server so the IPDACT-UD
automatically configures and can connect to Internet through the router.
The registrar consists of a one-digit field which admits a value of 1 to activate
the client and a value of 0 to deactivate it. The field contains a number
verification digit. By default this is configured to 1 i.e. the client is activated.
Switch time for the output relay