IBM Options External V.34Data/Fax Modem 2834

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Our IBM Options External V.34Data/Fax Modem model no. MT2834BLK has a serial number of 42-P2055 and was manufactured by MultiTech for IBM and was introduced in 1996. It is complete with power supply, cables and manuals  all in the original IBM Options box.

The MultiModem BL Series modem connections can be made on Public Switched Telephone Networks (PSTNs) and/or point-to-point 2-wire and 4-wire leased telephone type circuits. Your modem offers interactive automatic dialling, as well as Command Mode option configuration. You may store up to ten command line/telephone numbers, of up to 60 characters each, in the modem’s nonvolatile memory. The modem pulse or tone dials, and recognizes dial tones and busy
signals for reliable call-progress detection. The modem can detect AT&T calling card tones. It is FCC-Registered for connection to telephone networks without any Data Access Arrangements (DAA’s).

The modem also features Callback Security to protect networks from unauthorized use, and to manage phone line costs. By using the modem’s phone number and password directory, a host site can, upon receipt of a call, callback to a remote site at a predetermined number. Remote Configuration permits you to assist users at remote sites, saving you the time and trouble of site visits and preventing misinterpretation of configuration instructions.

The MT2834BL modem meets the proposed Enhanced V.34 ITU standard for data signalling rates as high as 33.6/31.2K bps in full duplex mode. Enhanced V.34 is an extension of V.32/V.32bis/V34 standards, and supports and is compatible with those features, including EIA extended Automode; adaptive line probing; automatic symbol rate and carrier frequency during start-up; and retrain and rate renegotiation (in 2400 bps increments).

The major application for the MT2834BL is in 4-wire leased line networks with the addition of dial backup capability. With this capability, the dial-up feature saves any down time if the leased line fails. Since the MT2834BL operates according to ITU V.34 modulation, it can operate full-duplex over two wires, so that the dial backup mode performs the same throughput as the leased line.

The MT2834BL features ITU V.42 error correction and V.42bis data compression, providing 100% error-free data transmission. V.42 error correction incorporates MNP( Classes 3 and 4, and LAP-M. You may select V.42bis data compression for 4-1 throughput, or MNP Class 5 for 2-1 throughput.)

Date : 1996

Manufacturer : IBM, MultiTech

This exhibit has a reference ID of CH6752. Please quote this reference ID in any communication with the Centre for Computing History.

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