NOTE: The USR3500 has been discontinued in North America. There is no direct replacement. The Courier® M2M 4G LTE CAT 1 Cellular Gateway USR3513 is available but features and specs do vary. It is suggested to verify requirements before purchasing replacement units.
Introducing the USR® Courier® M2M 3G Cellular modem, one of the latest in the Courier product line known around the world for its reliability, security and performance for mission critical applications. The intelligent terminal is ready to use out of the box on GSM HSPA+ global wireless networks with GPS capabilities and added powerful embedded software for easier programming, configuration, and customization. One configuration enables the option for persistent connectivity for M2M applications that require always-on bidirectional data transfers. With an extended working temperature range and compact size this reliable device is an ideal solution for M2M applications including remote maintenance & control, Point of Sale, environmental monitoring, transportation, automation, security systems, and Out of Band management. Carrier approved with full certifications, this device is ready for quick implementation, reducing customer costs significantly and lowering the entry barriers to a wide range of M2M solutions for an easier transition from analog to cellular.
Product Code: USR3500
US Availability: Discontinued in US
For further information including Accessory Kits, SIMs, and Data Rate Plans contact USR via email.
Most cellular networks use a different type of technology that isn't compatible with dial-up analog systems. On a high level, most cellular data networks are packet based, rely on IP addresses, and are client/server whereas dial-up systems are peer-to-peer direct connection and rely on phone numbers which normally cannot communicate without additional hardware and/or software that could complicate how a solution works.
How much can I expect to save by replacing analog modems with cellular modems or gateways?
The cost of analog phone lines is on average $50 per month per line in North America. Cellular services when pooled can provide even greater cost savings with small data packages and low data volumes. The cost savings increase as the volume goes up, whereas the dial-up monthly expenses are consistent but pricey.
Possibly. Depending on how your SIM is provisioned, it may allow a cellular modem or gateway to originate a connection to the IP address of a TCP/IP server on the Internet. If your SIM does work, you won’t have M2M features like static IP address, data pooling, peer-to-peer routing, or host-to-device VPN.
When the cellular service is provided by a Mobile Network Operator (MNO), the IP address reported by the USR3500 AT$IP command may be public and routable. Normally this IP address provided by the MNO will be dynamic so it will change periodically, and the MNO may block access to this IP address with a firewall.
When the cellular service is provided by a Mobile Virtual Network Operator (MVNO), the IP address reported by the USR3500 AT$IP command is not public and routable. The reported IP address is used only by the MVNO to contact the cellular network. The MVNO will translate the IP address using Network Address Translation (NAT) and provide you with a different routable IP address. The USR3500 cannot report that IP address. The MVNO will control whether your IP address is private or public, and static or dynamic.
This video is an overview of things to take into consideration when choosing a cellular modem - specifically what accessories are included with the USR3500. Accessories like power supply and antennas may not be included with other modems and may affect overall cost of implementing a cellular device.
Length: 3:12 minutes
Quick and simple video showing how to install a SIM card in the USR3500 Cellular Modem
Length: 45 seconds
Learn how to connect a USR3500 Cellular Modem to a GSM cellular network.
1:42 Attach the Antenna and connect the modem to a computer
2:06 Use a terminal application to configure the modem with the CLI
3:30 Verify Connectivity with command at+cgreg
3:45 Troubleshooting - Resolve cellular registration issues
4:26 Enter the APN at$cgdcont=1,"APN" (no username or password)
6:22 Verify Connectivity with commands AT$IP or AT$PING="address"
Length: 9:01 minutes
* MVNO services may require a subscription for qualified customers. New SIM activation may be limited on 3G networks.
† For software developers only. Device drivers are not available for user applications.