Magazine article Information Today

High Speed, Long Distance Terminal Servers Link LANs

Magazine article Information Today

High Speed, Long Distance Terminal Servers Link LANs

Article excerpt

Current Com Ports operate up to 115.2 Kbps on PCs, terminal servers on LANs, and I/O communication subsystems used on multi-user PCs. Now Telebyte Technology introduces the Model 207 PC-LINK to allow data transmission at 115.2 Kbps over distances of 3,500 feet.

The Model 207 PC Link is a high speed PC modem that provides full duplex transmission from DC to 115.2 Kbps over two twisted pairs. This capability provides a communications link for remotely located PCs that need to connect to a LAN, and is accomplished by installing a terminal server on the LAN and using Model 207s to extend the high-speed serial data lines to the remote PCs. At reduced data rates the distance can go to five miles (nine Km).

The Model 207 does not require any power source since it steals its operating power from the Transmit Data signal applied to its RS-232 connector. The data I/O occurs on Pins 2 and 3 of the RS-232 connector. The DTE/DCE switch allows reversing of the connections to Pins 2 and 3 depending on whether the unit to which the modem is connected is wired as a DTE or DCE device. …

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