User Guide; Introduction - US Robotics USR3520 User Manual

User Guide

This USRobotics Courier Modemulator & 3G M2M Cellular
Gateway User Guide explains how to install, activate, and
configure your device for use as a cellular gateway when the
Modemulator function is bypassed.
This guide is designed for:

Distributors

System integrators

Field engineers
Gateway hardware specifications and technical information are available in the
of this document. Information about deploying gateway firmware, configuration and software updates is
available in the Provisioning Server Guide

Introduction

The Courier Modemulator & 3G M2M Cellular Gateway from USRobotics can bypass the Modemulator
logic to operate as a USR3510 cellular gateway. In gateway mode it provides LAN to WWAN and Serial to
WWAN routing and GPS functionality in a simple, cost-effective base unit. The gateway can be
configured locally or remotely from a PC, tablet, or smartphone. The USR3520 is certified on all major
U.S. cellular operators (CDMA/EvDO and WCDMA/HSPA).
The USR3520 is pre-loaded with a USR3516-EMU Modemulator card in its primary expansion slot.
Base Unit Design
The base unit design features Serial-to-WWAN, LAN-to-WWAN, and GPS interfaces, advanced error
detection, and repair watchdogs. When a component or software process loses connectivity, the device
automatically resets or repowers itself. You can also schedule the device to reset at specific intervals to
ensure daily, error-free operation.
Finally, the device can be monitored and provisioned remotely, which vastly reduces the technician time
on site, and enables firmware updates and new software features to be deployed quickly and efficiently.
Expansion Slots
The gateway can be user-customized with expansion cards available from select electronics distributors.
The USR3516-EMU Modemulator card that is pre-loaded in the primary expansion slot can be removed
and replaced with another expansion card, and the secondary expansion slot can be loaded with an
expansion card. Contact a USRobotics Sales representative for more details.
Revision: 1.00
section of this document.
Copyright 2015 U.S. Robotics Corporation
Hardware Guide section
4 | P a g e