Configure network interfaces Configure mobile (cellular) interfaces
Digi TransPort WR Routers User Guide 187
Configure mobile (cellular) interfaces
Wireless WAN functionality is available on models that are fitted with a wireless WAN module only,
such as CDMA, GPRS, 3G, HSPA models. This module connects to one of the ASY ports, or, on some
models, the USB controller. The router controls this module using AT commands, in the same
manner as controlling a modem.
In this discussion, any further references to W-WAN technologies such as CDMA, GPRS, 3G etc. are
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 you can use the router in situations where no ISDN or xDSL service
connection is available. In addition, you can use wireless 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 must set several parameters specific to your
mobile network operator. Have the following information on 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. Check 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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