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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Dual identity modems for leased line back-up
Library Systems Newsletter [January 1990]
| Permalink: |
 https://librarytechnology.org/document/4698/ |
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| View Citation | |
| Publication Year: | 1990 |
| Type of Material: | Article |
| Language | English |
| Published in: |
Library Systems Newsletter |
| Publication Info: | Volume 10 Number 01 |
| Issue: | January 1990 |
| Page(s): | 6 |
| 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 |
| ISSN: | 0277-0288 |
| Record Number: | 4698 |
| Last Update: | 2022-08-06 23:17:49 |
| Date Created: | 0000-00-00 00:00:00 |
| Views: | 41 |
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