A short haul modem extends the transmission range between terminals and computers connected via private lines or networks. Also called a short range modem, line driver or limited distance modem, a short haul modem can extend a signal that is normally limited to a few dozen or a few hundred feet up to several miles. Short haul modems are used to connect POS terminals, machine tools, sensors, and a myriad of other digital devices to a host computer. Speeds typically range up to 128 kbps, or even up to E1/T1 and 4.6 Mbps.
RAD’s short haul modems connect computers, bridges, routers, and other digital communications equipment over short ranges. Common locations include inside buildings, campuses or cities. RAD’s short haul modems overcome the limitations of digital interfaces, extend LAN coverage when connected to bridges and routers and enable SHDSL and IDSL connectivity. Many of these devices also support LAN extension by using a built-in remote bridge or router, with no need for an external one.
Members of RAD’s short haul modem family offer selectable data rates from 1.2 kbps up to 10 Mbps, synchronous or asynchronous transmission, full or half duplex operation over 2- or 4-wire infrastructure, range up to 10 km (6.2 miles), a variety of interfaces (including E1, V.24/RS-232, V.35, X.21, RS-530, V.36/RS-449, G.703-HDB3, Ethernet user interfaces, and HSSI), and a built-in IP router. Devices work opposite LRS-24, LRS-52, DXC SHDSL modules, and third party equipment. Some feature line repeater functionality to further extend reach.
RAD offers both standard-size and miniature short haul modems.
