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The Model 1018 async short range modem is able
to pass two discrete sets of handshaking signals: DTR & DCD are used
to control the point-to-point session, while RTS & CTS are used for flow
con-trol. This capability–combined with the Model 1018’s ability
to support RS-232 data rates up to 57.6 kbps over two twist-ed pair–makes
the Model 1018 perfect for inexpensive campus Internet links.
Just use a plug-in Model 1018 at each remote computer, a rack of Model 1018RC
cards at the central site, and connect them with 2-pair copper wire at up
to 2.4 miles (3.9km)! SLIP/PPP Internet Link
SPECIFICATIONS
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DTE Transmission Format: Asynchronous
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Transmission Line: Unconditioned twisted pair 19 -26 AWG (.4mm)
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Link Clocking: Internal
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Distance: 2.4 miles (3.9km) at all data rates
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DTE Data Rates: 1.2, 2.4, 4.8, 9.6, 19.2, 28.8, 38.4 and 57.6 Kbps (switch
selectable)
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Interfaces: EIA RS-232 / CCITT V.24
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Control Signals: DTR/DCD (Session Control), RTS/CTS (Flow Control)
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Carrier: “Constantly on” or “Controlled by DTR”
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Surge Protection: 600W power dissipation for up to 1 msec
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Isolation: Minimum 1500 V RMS using isolation transformers
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Connectors: DB-25 female or male on RS-232 side; RJ-11 or RJ-45 on line side
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Power Supply: 7.5V DC wall mount transformer
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Temperature Range: 32-122°F (0-50°C)
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Dimensions: 3.55” x 2.1” x .80” (9.0 x 5.3 x 2.0 cm)
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SLIP/PPP internet link
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