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3270

The designation 3270 is a manufacturer-specific designation of the company IBM for SNA peripherals, which includes control units and terminals. These devices communicate with the host using either Synchronous Data Link Control (SDLC) or Binary Synchronous Communication (BSC). In the SNA architecture, the 3270 devices are referred to as Logical Units

(LU). The transmission speed was 2.35 Mbit/s, and the transmission medium

usedwas RG-62coaxial cable with 93 ohms

. 3270 terminals were connected to the 3174 cluster controllers.

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Englisch: 3270
Updated at: 25.08.2011
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