Configure mobile interfaces
Digi TransPort User Guide 189
Configure mobile interfaces
Wireless WAN functionality is only available on models that are fitted with a wireless WAN
module, such as CDMA, GPRS, 3G, HSPA etc. This module is connected to one of the ASY ports
(and USB controller on some models) and is controlled by the router using AT commands (in the
same way as a modem). Any further references to W-WAN technologies such as CDMA, GPRS, 3G
etc. will be referred to as GPRS, GSM, 3G or simply ‘wireless’ networks.
W-WAN modules provide always-on wireless data connectively over the GSM network at speeds
of up to 7.2Mbps. This means that the router can be used in situations where no ISDN or xDSL
service connection is available. In addition, wireless can be used to send or receive SMS alert
messages (as an alternative to emails for issuing remote alert messages or for automating
remote configuration of deployed routers).
Before attempting to connect to a wireless service, you need to set several parameters specific to
your mobile network operator. It will be useful to have the following information to hand:
• The assigned APN (Access Point Name)
• PIN Number for your SIM card (if any)
•Username and password
Once the W-WAN router is correctly configured, check to see if it has obtained an IP address from
the network by navigating to the Diagnostics-Status > PPP > PPP x page (where x is either 1 or 3
depending on the model) and checking the IP address parameter. (It should contain an IP address
other than 0.0.0.0 or 1.2.3.4).
Additionally, check that the SIM is working correctly and also check the signal strength by
navigating to the Status > Mobile page.
SIM
Select a SIM to configure. SIM 1 specifies the SIM card fitted to the slot marked SIM 1 in the
router’s SIM card slots. SIM 2 specifies the SIM card fitted to the slot marked SIM 2.
Note When using a single SIM card, the default action is for the router to use PPP 1 as the
mobile interface. To configure dual SIMs for fail-over, go to Configuration > Network >
Interfaces > Mobile > SIM Selection to launch the Dual SIM wizard.
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