Functions
MLR 3G 2.0
10.6
Redundant Communication Device
10.6.1
Configure Redundant Communication Device
To increase the operational safety and availability of the MLR 3G 2.0, you can connect a
second communication device to provide a redundant transmission path. This means
that you can then still use a second transmission path (e.g. modem), in case one trans-
mission path (e.g. mobile radio) fails. Several combinations of modem, ISDN and
GSM/GPRS/EDGE/UMTS devices are possible. Just connect another INSYS communication
device to the the serial interface of the MLR 3G 2.0. The MLR 3G 2.0 will recognize auto-
matically that a redundant transmission device is available during the next system start
and will change the web interface accordingly for configuration.
Please contact your sales partner or INSYS Microelectronics, to find out which other IN-
SYS device is suitable for the connection as a redundant communication device.
If the serial Ethernet gateway is enabled, a redundant communication device cannot be
used. The options for the redundant communication device are not displayed. If the
sandbox is enabled and the serial interface is reserved for the sandbox in addition, the
sandbox has priority, i.e. redundant communication device and serial Ethernet gateway
are disabled.
Configuration with the web interface
If the MLR 3G 2.0 finds a redundant communication device at its serial inter-
face during the system start, the menus
Dial-In
and
Dial-Out
provide
further
options
.
In order to
configure Dial-In
for redundant operation, select in the menu "Dial-
In" on the page "Dial-In", which communication device is to be used for Dial-
In. You will have the option to activate Dial-in via one of the two communica-
tion devices, via both communication devices, or not at all.
In order to
configure Dial-Out
for redundant operation, select in the menu
"Dial-Out" on the page "Dial-Out", which communication device is to be used
for Dial-Out. You will again have the option to activate dial-out via one of the
two communication devices, via both communication devices, or not at all.
You can also define which communication device should be used preferably.
The second communication device is only used, when the dialing attempt us-
ing the first device is not successful. In the menu "Dial-out", you must also en-
ter the destination phone number and the PPP dial-up parameter for each of
the two communication devices individually.
Save your settings
by clicking "OK".
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