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SRX110 Services Gateway 3G USB Modem Overview

 

This topic includes the following sections:

Introduction to the SRX110 Services Gateway 3G USB Modem

Wireless WAN access is becoming widely available and comparably priced with Integrated Services Digital Network (ISDN) and Digital Subscriber Line (DSL). The SRX110 Services Gateway supports a wireless interface as a backup for primary interfaces such as Fast Ethernet.

To facilitate wireless connectivity, the device has a 3G-WAN USB port on the back panel that supports the external 3G USB modem using a USB modem extension cable. For more information on the back panel of the device, see SRX110 Services Gateway Front Panel and Back Panel Views with 3G and Integrated VDSL2.

SRX110 Services Gateway 3G USB Modem—Supported Modem Types

Table 1 lists the wireless modems supported on the SRX110 Services Gateway.

Table 1: Wireless USB Modems Supported by the SRX110 Services Gateway

Wireless USB Modem

Release Supported

Sierra Wireless Compass 888. Not available from Juniper Networks.

Junos OS Release 11.2 R3 and later.

Sierra Wireless AirCard 319U. Not available from Juniper Networks.

Junos OS Release 11.2 R3 and later.

Using the SRX110 Services Gateway 3G USB Modem

To use the 3G USB modem, you plug one end of the USB modem extension cable into the 3G-WAN USB port on the rear side of the device, and then plug the 3G USB modem into the USB modem extension cable-mount slot. This enables you to dial a wireless call to the 3G wireless service provider network, which acts as an Internet gateway. To use the 3G USB modem as a backup interface, you can use the dialer feature available in the services gateway. The 3G USB modem is secured with a USB protection cover as shown in Figure 1.

Figure 1: 3G USB Modem with USB Protection Cover
3G USB Modem with
USB Protection Cover

Table 2 lists the components of the 3G USB modem with USB protection cover.

Table 2: 3G USB Modem with USB Protection Cover Components

Number

Component

1

USB mount top cover

2

USB modem

3

USB mount (magnetic/non-magnetic)

4

USB mount base

5

Lock