Introduction
The NETGEAR LTE Modem LB2120, in this manual referred to as the modem, can provide broadband data
services to areas where wired Internet is not readily available or is difficult, costly, or time-consuming to
install. The modem uses existing 4G LTE mobile networks with automatic fallback to 3G mobile networks
to provide broadband data services. The LB2120-100AUS and LB2120-100EUS models also support fallback
to 2G mobile networks.
If you connect a WiFi router to the modem’s Gigabit Ethernet port, the mobile network connection can provide
high-speed Internet access for multiple users and devices in homes and offices.
The modem provides wireline broadband pass-through for automatic failover support so you can connect
the modem to an existing DSL, cable, or fiber optics gateway. If the wireline broadband connection goes
down, the modem automatically and seamlessly switches over to the backup Internet connection over mobile
broadband for continuous connectivity. This capability is enabled by default, but you might want to customize
the IP addresses for failover detection (see
Manage Automatic Failover Detection
on page 20).
Professional installation and configuration are not required. If a SIM card is installed and activated, by default,
the modem automatically searches for and connects to your network provider’s mobile broadband network.
For information about installing the modem, see the quick start guide, which you can download from
In the unlikely situation that the modem does not automatically connect to your network provider’s mobile
broadband network, you might need to add an access profile name (APN) profile. For information about
adding an APN profile, see
View APN Profiles or Add a Custom APN Profile
on page 35.
Supported Mobile Broadband Bands
The following table describes the mobile broadband bands that are supported for each modem model.
Table 1. Mobile broadband bands
2G GSM
3G UMTS
LTE Category 4
Model
Quad band
Bands 1, 2, 5, and 8
Bands 1, 2, 3, 5, 7, 8, 20, 28, 38,
and 40
LB2120-100AUS
Quad band
Bands 1, 2, 5, and 8
Bands 1, 2, 3, 5, 7, 8, 20, 28, 38,
and 40
LB2120-100EUS
Not applicable
Bands 2 and 5
Bands 2, 4, 5, and 12
LB2120-100NAS
Introduction and Hardware Overview
7
LTE Modem Model LB2120
