US Robotics USR3520 User manual

Revision: 1.00 Copyright 2015 U.S. Robotics Corporation 1 | P a g e
USRobotics®Courier®
Modemulator™ & 3G M2M Cellular Gateway
Gateway User Guide & Technical
Documentation
For the following products:
USR3520, USR803520
R24.0799.00
07/08/2015

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Table of Contents
Table of Contents.......................................................................................................................................... 2
User Guide .................................................................................................................................................... 4
Introduction............................................................................................................................................... 4
Base Unit Hardware .................................................................................................................................. 5
Expansion Cards ........................................................................................................................................ 7
USR Universe ............................................................................................................................................. 8
Custom Developer Images ........................................................................................................................ 9
Network Interfaces.................................................................................................................................... 9
Installing the Gateway............................................................................................................................. 10
Configuring the Base Unit .......................................................................................................................19
Configuring Expansion Cards...................................................................................................................63
Hardware Guide.......................................................................................................................................... 71
Mechanical Drawings .............................................................................................................................. 71
IP-65 requirement ...................................................................................................................................72
Front and Back Panels .............................................................................................................................73
LED Descriptions......................................................................................................................................77
Main Board Specifications.......................................................................................................................78
Expansion Card Specifications.................................................................................................................79
RF Specifications......................................................................................................................................89
Ethernet Specifications............................................................................................................................ 94
Environmental Specifications.................................................................................................................. 98
Power Requirements............................................................................................................................... 98
Internal Power Circuits............................................................................................................................ 99
SIM Card Requirements ........................................................................................................................ 101
Certification and Operator Approvals ................................................................................................... 102
USR Universe Guide .................................................................................................................................. 110
Introducing the USR Universe ...............................................................................................................110
Creating an Account ..............................................................................................................................110
Signing In ...............................................................................................................................................112
Activating a Gateway Using USR Universe ............................................................................................113

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Groups ................................................................................................................................................... 115
Devices .................................................................................................................................................. 125
Users......................................................................................................................................................139
Managing Software ...............................................................................................................................142
Editing Your Account .............................................................................................................................152
Appendicies............................................................................................................................................... 154
Appendix A: DB9 Pinouts....................................................................................................................... 154
Appendix B: Excessive Data Usage Warning ......................................................................................... 155
Troubleshooting........................................................................................................................................157
Licenses..................................................................................................................................................... 162

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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 Hardware Guide section
of this document. Information about deploying gateway firmware, configuration and software updates is
available in the Provisioning Server Guide section of this document.
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.

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Feature Overview
Reliability and Security
Software and hardware watchdogs continually monitor for loss of connectivity and will repair the
problem if detected
Software and configuration images are protected with digital signatures
Secure, redundant firmware and configuration images ensure the unit can revert to previous
working settings if a problem is detected
Management functions are protected by certificate or password and applied over encrypted links
Flexibility
Hardware expansion slots allow for additional radio and/or wired interfaces
Expansion cards are designed with board-edge connectors for easy installation and replacement in
the field
Hardware and software development kits are available to partners for developing custom expansion
cards and software images
Provisioning
The USR Universe allows for efficient deployment of firmware, configuration file and developer
image updates to multiple gateways at once.
More Resources
USR3520 M2M Cellular Gateway Datasheet (US)
USR803520 M2M Cellular Gateway Datasheet (WCDMA - EMEA)
Base Unit Hardware
The mechanical housing for each base unit is identical. Internally, the main board is also identical and is
designed around a WWAN module and Ethernet interface.

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The gateway can be user-customized with Option 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.
The base unit consists of:
Light weight aluminum housing with DIN rail and wall mounting options
Two SMA-type antenna interfaces: WWAN Main and WWAN Div/GPS
WLAN, GPS, System, and WWAN LEDs showing system status and signal strength
10/100 MB/s RJ-45 Ethernet interface
Primary expansion slot pre-loaded with USRobotics Modemulator card: USR3516-EMU
9-33 VDC power in with Micro-Fit™, dual row, 4-circuit connector
Available secondary expansion slot
Internal main board with WWAN module, Ethernet interface and GPS
Freescale i.MX280 450MHz Processor
o64 MB Ram
o128 MB Flash
oGTM68X WWAN module
Base Unit Versions
Two versions of the base unit exist:
USR3520
oContains the GTM689 cellular radio module which provides CDMA/EVDO and WCDMA
technology.
oUsed in the U.S. and Canada and has the correct certification and approvals for these countries.
USR803520
oContains the GTM681 cellular radio module which provides WCDMA technology.
oUsed in Europe and has the correct certification and approvals for these countries.

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Related Topics
Expansion Cards
Mounting options
Mechanical Drawings
Front and back Panels
Expansion Cards
The USRobotics M2M Cellular Gateway is compatible with Option expansion cards. For custom
solutions, Option also licenses a hardware development kit. Third parties can design their own
expansion cards to fit specific needs.
The expansion cards offered by Option include:
WLAN expansion card (CG2101)
Low cost serial card (CG1101)
Industrial serial card (CG1102)
PoE Ethernet switch (CG1103)
Basic Ethernet switch (CG1104)
Developer card (CG1105)
WLAN Expansion Card - CG2101
Provides 802.11abgn
Simultaneous Access Point and Station mode for providing service or connection as a wireless LAN
Failover to WLAN client for WAN connectivity
Dual SSID
Low Cost Serial Card - CG1101
Provides a single RS-232, 921.6Kbaud maximum speed.
Industrial Serial Card - CG1102
One RS-232 port with 921.6 Kbaud maximum speed.
2 KV isolated RS-485 serial port, 921.6 kbaud, full duplex or half duplex; 2 wire or 4 wire with
switchable termination.
Basic Ethernet Switch - CG1104
4-port 10/100Base-T
µSD card

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PoE Ethernet Switch - CG1103
Power over Ethernet board. (requires special power supply)
4-port 10/100Base-T with 2 ports class 4 or 4 ports up to class 3 PoE
µSD card
Developers Expansion Card - CG1105
Extended format with headers on all interfaces to attach to development equipment
Pre-wired RS-232 port, GPIO connected temperature sensor, a relay and SD card slot.
Related Topics
Installing Expansion Cards
Configuring Expansion Cards
USR Universe
The USR Universe is the configuration and deployment mechanism for the USR Gateway. From the
factory, the base unit is pre-configured for a USR3516-EMU Modemulator card.
On power-up, the gateway connects to the USR Universe over the wired Ethernet port and automatically
downloads the appropriate update. If the Ethernet interface is unavailable, then the gateway uses the
WWAN interface to download the updates.
The Gateway downloads the following files from the USR Universe:
Gateway firmware: System firmware provided by USRobotics.
Gateway developer image: customized software that provides additional functionality to the
gateway or controls third-party expansion cards.
Gateway config file: configuration settings that can be applied to one or more gateways
Gateway GOBI firmware image: software that updates changes to wireless operator firmware
Related Topics
USR Universe Guide
3G Connection Tab
Tip: You can set the USR Universe to enable or disable the automatic downloads.

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Custom Developer Images
To extend the base unit functionality provided by the gateway firmware, you can install developer
software images onto an overlay file system and adapt the gateway to specific needs. Developer images
can be created for custom applications and middleware, and to control third-party expansion cards.
Option licenses a software development kit which allows third parties to design developer images. For
information on the Option CloudGate developer program, contact Option Customer Support.
Related Topics
USR Universe Guide
Network Interfaces
For connecting to the Internet, the base unit comes with an Ethernet interface and a WWAN (3G)
interface. An optional WLAN interface is available only when the WLAN expansion card is installed.
While the WWAN network interface is always a direct connection to the Internet, or WAN, the Ethernet
interface and optional WLAN interface can act as either a WAN or a local Area Network (LAN). The LAN
interface allows local devices to connect to the Internet through the gateway.
The network interfaces available on the gateway are:
Ethernet interface: can be a WAN or LAN connection depending on the behavior of the WAN/LAN
switchover feature at start-up or can be set manually.
WWAN interface: always a WAN connection because it connects directly to the internet.
WLAN interface: optional Wi-Fi expansion card can be configured as either a WLAN client, which will
act as a WAN interface, or as a WLAN access point, which will act as a LAN interface.
Choosing a WAN or LAN Interface
The gateway can have only one WAN connection at a time. However the gateway can be connected to
several different LAN networks simultaneously.
In choosing the network interface, you can specify:
Manual: the network interface is selected through the embedded web interface on the Home page.
Automatic: a priority list defines which network interface to use to connect to the WAN/internet.
The network interface at the top of the list will try to connect to the WAN/internet first. If this
succeeds then the gateway continues to use this network interface to connect to the WAN/internet.
If the connection to the internet fails, the gateway tries the second interface in the priority list and
so on. The priority list is defined in the embedded web interface on the Home page.

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Related Topics
Configuring the Base Unit
Ethernet Tab
3G Connection Tab
WAN/LAN switchover feature
Installing the Gateway
To install the base unit out of the box, review the installation requirements and then follow the
installation steps listed below. For information about customizing the base unit, learn about installing
expansion cards and provisioning the device with a custom developer image.
Installation Requirements
Gateway base unit
Included power supply
Included WWAN antennas
Ethernet cable
Web browser on a laptop or smartphone.
A service plan from a wireless service provider.
oOne of the following US wireless service providers:
Sprint
Verizon Wireless
AT&T (requires SIM)
T-Mobile (requires SIM)
oFor non US wireless service providers, any WCDMA based network will work.
Browser Requirements
For the Provisioning Server:
Chrome 27.0 (.1453.110 m)
Firefox 21.0
Internet Explorer 9 (.0.8112.16421)
Internet Explorer 10 (.0.9200.16540)
Warning: In firmware versions 1.12.0 and older, the ability to choose between automatic mode and
manual mode and to set a connection priority list are not available. These firmware versions always
try to connect to the internet over the Ethernet interface first. When this interface is not able to
connect to the internet, the gateway will try to connect to the internet via the WWAN interface.

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MODE
For the gateway embedded web interface:
Internet Explorer 9
Safari 5.1
Firefox (Windows 21.0, Mac 12.0)
Chrome (Windows 27.0.1453.110, Mac 26.0.1410.65)
Opera (Windows 12.02, Mac 12.10)
Installation Overview
Bypass Modemulator to use Gateway Mode
The USRobotics Courier Modemulator & 3G M2M Cellular Gateway can bypass the Modemulator logic
to operate as a USR3510 cellular gateway.
To put the Modemulator into gateway mode, move the MODE switch to the right if not already there.
With power applied to the gateway, the MODE LED will be red when the Modemulator is switched into
gateway mode.
To install the base unit:
1. Attach the antennas.
2. Install the SIM, if your wireless operator is using a SIM card, or make sure that a service plan is
associated with your device (for Sprint and Verizon).
3. Register the Gateway on the Provisioning Server.
4. Power on the Gateway.
5. Connect the Gateway to a laptop and log in to the embedded web interface.
6. Select a wireless operator in the 3G Connection tab.
For operators using a SIM card, the network settings will populate automatically for most SIM
cards. Check the settings of the APN , Username and Password. Update them if appropriate.
Click Save changes. Learn more about 3G network settings
Before installing your gateway device, read the safety guidelines carefully. Not following these
guidelines can cause harm to the gateway, yourself or other persons.

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For CDMA based operators (for Sprint or Verizon, no SIM card is required), click Start
programming to start the activation sequence. Learn more about CDMA network settings
Attaching the Antennas
The base unit has two SMA-female antenna connectors on the front panel. Attach the included
antennas to these connectors.
Related Topics
Front and Back Panels
RF Specifications
Installing the SIM
For some UMTS and 3G operators, such as AT&T, T-Mobile and European operators, you must install a
SIM card associated with the service plan.
To install the SIM:
Tip: For other wireless operators, such as Sprint or Verizon Wireless, make sure a service plan is
associated with the device before continuing the installation.

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1. Using a T6 Torx screwdriver, remove the four screws from the top plate on the back panel, and then
remove the plate.
2. Insert the SIM into the SIM slot.
3. Replace the top cover plate and screws.
Related Topics
Selecting a Wireless Operator
Activating the Gateway
When you activate the gateway, you add the device to the USR Universe. The USR Universe allows you
to configure one or more devices with the same firmware, configuration, and developer images.
To activate a gateway using a computer:
1. Open an internet browser and go to the USR Activate URL: http://www.usr.com/activate/3510
2. If you don’t have a user name and password, click Don't have an account yet? and follow the
instructions.
3. Sign in and complete the Activate Device page. Select or enter a User group, (your personal user
group is the same as your username), the type of activation, the serial number, and activation code.
4. Click Activate.

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Related Topics
Creating an Account on the USR Universe
Activating the Gateway Using the USR Universe
Powering On the Gateway
To power on the gateway:
1. Plug the power supply into the power connector on the back of the unit and into a power source.
2. Observe the LEDs on the front panel. The gateway attempts to connect automatically with the USR
Universe and download the appropriate firmware, developer image, and configuration file. When
the power-on sequence is complete, the System and WAN LEDs on the front panel turn green.
Related Topics
LED Descriptions
Selecting a Wireless Provider
For the minimum, out-of-the-box installation of the base unit, you have to connect the device to a
laptop and use the embedded web interface to select the appropriate wireless provider firmware.
To connect the gateway to a laptop and select a wireless provider:
1. Connect an Ethernet cable to the Ethernet port on the gateway front panel and a network port on a
laptop or computer.
2. In a web browser, go the URL: 192.168.1.1.
3. In the login screen, enter the default username admin and password admin.
4. Click the 3G Connection tab in the top menu bar.
5. Scroll down to the Radio firmware selection field for the wireless operator firmware options.
6. Select the appropriate wireless provider and click Save changes.
IMPORTANT: When using the USRobotics USR803520 (GSM/WCDMA only version), selecting the
wireless operator is not needed and you can immediately go to step 7 on the next page.
WARNING!
LAN to WAN routing is enabled by default. Once connected, any
Internet activity on your system will consume Cellular Data. For
configuration and more information go to Appendix B

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7. Proceed with the wireless provider selection.
For Verizon Wireless and Sprint service
Make sure the service plan is already associated with the unit (MEID). Scroll down to the CDMA
section and click Start programming to complete the activation.
Tip: When using an AT&T SIM card, select AT&T. For all other operators using SIM cards, select UMTS
generic.

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For all SIM card based operators
The network settings populate automatically for most SIM cards. Scroll down to the Network
Settings section and check the APN, Username, and Password fields. Update if necessary and
click Save changes. If the service plan requires a PIN code, scroll down to the PIN Settings
section, enable and enter the PIN code, and click Save changes.
Related Topics
Configuring the Base Unit
3G Connection Tab
Installing Expansion Cards
Gateway expansion cards are easy to install either during staging by a distributor or system integrator,
or in the field by a technician.
Expansion cards are designed to fit in one of two expansion slots accessed from the unit’s front or back
panels. In general, cards with antenna interfaces, such as the WLAN card, are installed in the back slot to
avoid interference with the 3G antennas on the front of the base unit.
To install an expansion card:
1. Make sure the unit is powered off.
2. Using a T6 Torx screwdriver, remove the three screws from the bottom plate on the front or
back panel, and remove the plate.
3. With the expansion card in your hand, make sure the English labelling for any external
interfaces, such WLAN Antenna or Serial Port, are facing up. In this orientation, the card
connector is also right facing.
Tip: Another way to determine the appropriate slot, is to look at the card connector. Cards with the
small connector are installed in the rear slot. Cards with the large connector are installed in the front
slot.

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4. Slide the card into slot, using the side channels or grooves on the housing to guide the card into
place. Make sure the screw holes line up.
5. Push gently until the card is flush with the housing.
6. Secure the card with the screws.
The following table lists the expansion cards available from Option and the slot.
Expansion Card
Slot
Wi-Fi Card (CG2101)
Back
Low Cost Serial Card (CG1101)
Front
Industrial Serial Card (CG1102)
Front
Basic Ethernet Switch (CG1104)
Front
PoE Ethernet Switch (CG1103)
Front
Developers Card (CG1105)
Front
Removing Expansion Cards
1. Remove the Torx screws that fasten the card to the base unit.
2. Plug a connector into the mating connector on the expansion card. If the card has multiple
connectors, choose a connector near the right edge.
3. Remove the expansion card by pulling the plug or cable that is inserted into an expansion card
connector.
Note: The expansion card faceplate will deform if the card is pulled at the edge.
Do not attempt to remove the expansion card by pulling its edge!

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Related Topics
Configuring Expansion Cards
Mounting the Gateway
The gateway can be mounted on a wall or DIN rail.
Mounting on a wall
The gateway can be mounted on a wall with six screws. The mounting holes in the base of the gateway
have a diameter of 4.3 mm. USRobotics recommends using screws with a minimum width of 4mm and a
minimum length of 30 mm (M4x30mm).
To wall mount the gateway:
1. Mark the six holes with a pencil on the wall.
2. Drill (if necessary) the holes in the mounting surface. Do not drill into the gateway housing. Click
here for a drawing of the mounting holes.
3. Mount the gateway with six M4x30mm screws
Tip: When choosing the mounting orientation of the unit, consider the direction of the cables and
antennas. Make sure cables are routed with sufficient ease to all connectors, and that the antennas
are unobstructed for easy positioning. The front panel LEDs should also be visible.
IMPORTANT: All mounting hardware is installer provided.

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Mounting on a DIN rail
To mount the gateway on a DIN rail, use two DIN rail adapters. USRobotics suggests adaptors from
the following companies:
Phoenix Contact
DSB Marketing
Hammond
Configuring the Base Unit
When the gateway is connected to a laptop through an Ethernet cable, you can configure the device
locally using the embedded web interface. The web interface allows you to configure one device at a
time.
Learn how to log on to the embedded web interface
The web interface displays a number of tabs based on the expansion cards installed. For the base unit
with the included USR3516-EMU Modemulator card, the following default tabs are available: Home,
Ethernet, 3G Connections, Firewall, Connection Persistence, Provisioning,System, Plugin and VPN.
Tip: To provision a number of gateways at once, use the web interface to create a configuration file
and use the USR Universe to download the file to multiple devices.

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Click this tab
To do these tasks
Home
Verifying the Internet Connection
Checking the Firmware Version
Ethernet
Disabling the WAN/LAN Switchover Feature
Managing IP Configuration Settings
3G Connection
Configuring the WWAN Interface
Choosing a Wireless Operator
Setting Up SIM Parameters
Setting Up WWAN Connection Parameters
Choosing PIN Code Settings
Setting up Verizon Wireless or Sprint wireless operators
Firewall
Setting Default Firewall settings
Setting Up the DMZ
Setting Up Inbound Port Forwarding
Setting Up Outbound Port Filtering
Setting Up Outbound Trusted IPs
Connection Persistence
Configuring the Connection Watchdog
Configuring the Automatic Timed Reset
Provisioning
Setting up Automatic updates
System
Setting up the Time Zone
Setting up Remote Access to the Gateway
Setting up a Dynamic DNS Service
Changing the Username and Password
Creating Log Files
Download a configuration file
Manually Resetting the Gateway
Plugin
Setting up the serial port
Setting up GPS reporting
VPN
Creating and configuring IPSec tunnels