Configure mobile interfaces
Digi TransPort User Guide
202
Post Hang-up string:
Additional
AT
commands that are sent to the wireless module after it has been disconnected.
As with the Initialisation strings, it is not necessary to include the
AT
as this is inserted
automatically by the router.
Wait n seconds between hanging up and allowing another call
The length of time, in seconds, that the router will wait after hanging-up the wireless module
before initiating another call attempt.
Wait n seconds between attachment attempts
The number of seconds between network attachment attempts, some networks require 60
seconds between attempts to attach to the wireless network.
Reset the module after n unsuccessful connection attempts
The router will normally make multiple attempts to connect to the wireless network in the
event that the signal is lost. In some cases, this can result in a lock-up situation where the
wireless network is unable to attach the wireless device due to the multiple attempts. This
parameter specifies the number of attempts at connection that the router should make
before power cycling the internal wireless module. Power cycling the wireless module forces it
to re-register and reattach to the network. The default setting of 10 is the recommended
value. Setting this parameter to 0 will prevent the router from power cycling the wireless
module if it cannot obtain an IP address.
Reset the module after n unsuccessful status retrieval attempts
The router periodically collects status information from the internal wireless module. This
information, which may be viewed on the
Management > Network Status > Interfaces >
Mobile
web page, includes details of the signal strength and network attachment status. As a
safeguard against problems communicating with the wireless module, the Status retries
parameter may be used to specify the number of unsuccessful attempts to retrieve status
information from the wireless module before power cycling it. The default setting of 30 is the
recommended value. Setting this parameter to 0 will prevent the router from power cycling
the wireless module if it cannot read the wireless status information.
Create a signal strength event every n minutes
Configures the router to write the signal strength to the Event Log every
n
minutes.
If registration is lost for 5 minutes
Controls whether the router will power cycle the wireless module after the network
registration has been lost for 5 minutes. Setting this parameter to
Do not reset the module
will never recycle the wireless module, setting to
reset the module if GSM registration is
lost
will power cycle the module after 5 minutes loss of GSM registration, and setting to
reset
the module if GSM registration is lost
will power cycle the module after 5 minutes loss of
GPRS, 3G or HSPA registration.
Preferred System:
Controls which mobile technology will be used as the preferred system (2G/3G).
• When set to
Auto
, the wireless module will choose the fastest technology available.
• When set to
GSM
, the wireless module will try GSM (GPRS/EDGE) technology first.
• When set to
WCDMA
, the wireless module will try WCDMA (UMTS/HSPA) technology first.
For CDMA: Select CDMA for 2G (1xRTT) or EVDO for 3G.
