Juniper Networks J-Series USB Modem Connection and Configuration Overview, On the Services Router

J-series™ Services Router Administration Guide

Table 23: J-series Default Modem Initialization Commands (continued)

Modem Command	Description
%C0	Disables data compression.

When the Services Router applies the modem AT commands in the init-command-stringcommand or the default sequence of initialization commands to the modem, it compares them to the initialization commands already configured on the modem and makes the following changes:

■If the commands are the same, the router overrides existing modem values that do not match. For example, if the initialization commands on the modem include S0=0 and the router’s init-command-stringcommand includes S0=2, the Services Router applies S0=2.

■If the initialization commands on the modem do not include a command in the router’s init-command-stringcommand, the router adds it. For example, if the init-command-stringcommand includes the command L2, but the modem commands do not include it, the router adds L2 to the initialization commands configured on the modem.

USB Modem Connection and Configuration Overview

To use USB modems to remotely manage a Services Router, you perform the tasks listed in Table 24 on page 32. For instructions, see the cross-references in the table.

Table 24: USB Modem Connection and Configuration Overview

Task	Instructions
Perform prerequisite tasks.	“Before You Begin” on page 33
On the Services Router
1. Connect a modem to the router.	“Connecting the USB Modem to the Services Router's USB
	Port” on page 33

2.Configure the modem interfaces on the router. “Configuring USB Modem Interfaces with a Configuration Editor” on page 33

3.	Verify the modem configuration on the router.	“Verifying the USB Modem Configuration” on page 42
4.	Perform administrative tasks as necessary.	■	Modifying USB Modem Initialization Commands on page 41
		■	Resetting USB Modems on page 42

At the User End

1. Configure the modem at your remote location.

“Configuring a Dial-Up Modem Connection at the User End” on page 39

2. Dial in to the router. “Connecting to the Services Router from the User End” on page 40

32■ USB Modem Overview