Digi LR54 User Manual page 106

Interfaces
Available options for value vary depending on the modem type. To determine available
options:
(config)> network modem wwan access_tech ?
Access technology: The cellular network technology that the modem may
use.
Format:
2G
3G
4G
4GM
4GT
all
Default value: all
Current value: all
(config)>
The default is all, which uses the best available technology.
9. Set whether the modem should use the main antenna, the auxiliary antenna, or both the main
and auxiliary antennas:
(config)> network modem wwan antenna value
(config)>
where value is one of the following:
main
n
aux
n
both
n
10. Save the configuration and apply the change:
(config)> save
Configuration saved.
>
11. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
Configure cellular modem APNs
The LR54 device uses a preconfigured list of Access Point Names (APNs) when attempting to connect
to a cellular carrier for the first time. After the device has successfully connected, it will remember the
correct APN. As a result, it is generally not necessary to configure APNs. However, you can configure
the system to use a specified APN.
To configure the APN:

Web
LR54 User Guide
Wide Area Networks (WANs)
106