| 56k=v.Unreliable: News and information about 56k modems. Extensive troubleshooting section. |
| AirLink Communications, Inc.: Manufacture CDPD modems, test tools, and vehicle tracking and telemetry systems. Includes product specifications and applications, and career opportunities. |
| Allied Data Technologies: Dutch Modem and ISDN peripherals. Brandnames TRON Tornado Bausch Trident |
| ARC Electronics: SCADA applications including dial up, leased line modem, cellular modems and wireless |
| Cell modem and Laptop/Notebook Review: Review: using a cellular modem with a Dell Latitude CPt C333GT notebook/laptop portable computer - a hands-on experience exploring the use of notebook computers with cellphones. |
| IP-Warehouse: Simple Source for IP Networks. Dslam DSL equipment online sales. |
| Navas 28800-56K Modem FAQ: A comprehensive source of information on modems, emphasizing practical advice on how to select and use them effectively. |
| Paradyne Corporation: Designs, develops and manufactures broad band modems for high-speed DSL, WAN, Internet access and multimedia applications. |
| PTR Associates Ltd: UK based modem dealer, specialising in Motorola and Multitech. Includes features of various modem models. |
| Rio Communications: Modem-related resources. |
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