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Dual identity modems for leased line back-up

Library Systems Newsletter [January 1990]

Leased lines for telecommunications are cost effective, but they leave a library vulnerable to line failure. A little known option worth considering is the use of V.32 or dual identity modems, devices which can connect both to leased and dial-up lines. The devices accommodate data transmission rates of up to 9600 bps. Many are able to switch automatically from leased to dial-up in case of line failure. The modem is integrated with a multiplexor. Among the companies offering V.32 modems are ARK Electronic Products, British Telecomm, General Data Comm, Hayes, Microcom, NEC America, Racal-Milgo, Racal-Vadic, and U.S. Robotics.

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Publication Year:1990
Type of Material:Article
Language English
Published in: Library Systems Newsletter
Publication Info:Volume 10 Number 01
Issue:January 1990
Publisher:American Library Association
Place of Publication:Chicago, IL
Notes:Howard S. White, Editor-in-Chief; Richard W. Boss and Judy McQueen Contributing Editors
Subject: Modem
Record Number:4698
Last Update:2022-09-14 16:23:07
Date Created:0000-00-00 00:00:00