Bosch ITS-DX4020-G, Инструкция по установке и эксплуатации

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32 en | Configuration GPRS/GSM IP Communicator
F01U163066 | 01 | 2010.05 Installation and Operation Guide Bosch Security Systems, Inc.
4.3.3 Backup or Low Security Application (residential or other once-a-day
reporting location)
Polling times are typically 12 to 24 hours. Path integrity is only tested once or twice a day, and
short interruptions in network service are generally not indicated at the premise and central
station. Using settings similar to the following allows the system to recover from short
outages without causing trouble conditions at the premise. The following Backup or Low
Security Application recommendation assumes the ITS-DX4020-G is the primary
communication device with a different technology backup (PSTN or Wired IP).
Control Panel Settings
– Poll Rate: 24 hours
– ACK Wait: 300 sec (5 min)
– Retry Count: 10
ITS-DX4020-G Settings
– GPRS ACK Timeout: ACK wait (300 sec) x 2 = 600 sec
By setting the GPRS ACK timeout less than the retry count, the ITS-DX4020-G has time to
reconnect to the network if the carrier dropped the connection or for short maintenance
interruption outages.
– GPRS Session Timeout: Must be greater than control panel poll time (24 hours) + ACK
wait (5 min) x Retry Count (5) + ACK Wait (5 min) = 24 hours 55 min. This parameter’s
default 4 hour setting must change. Check with the SIM service provider to determine the
maximum time allowed for a session. Your GPRS session timeout must be less than this
value.
D6x00 Receiver Settings
– Control Panel Poll Rate: 25 hours
– ACK Wait: 15 sec
NOTICE!
Several SIM service providers only support up to 24 hour session timeout. Check the
information that came with the SIM card. If the carrier’s session timeout is less than your
GPRS session timeout, the communication path is dropped by the carrier and the event
message is not received until a new connection is made, delaying your event messages from
being delivered when expected. To ensure the communication path is not dropped, set the
poll rate to less than the carrier timeout (for example, 18 hours).
NOTICE!
The D6x00 Receiver must use D6200CD V1.35 or later to support hour selections.
NOTICE!
Signal outages can be caused by routine upgrades and maintenance of the mobile towers. On
average, these outages can last from 1 to 15 minutes. One option to minimize the number of
signal failures caused by these outages is to reduce the poll rate setting in the control panel to
half of the poll rate setting in the central station receiver.