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Article: How Digital Data Transmission Technology Is Determining the Direction of the Future.
- Article from:
- Communications News
- Article date:
- May 1, 1984
- Author:
CopyrightCOPYRIGHT 1984 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Analog data communications has exhibited enormous growth over the past decade. Voice transmission (the spoken word) has an average effective rate of approximately 50 bits per second. Terminals utilizing 9,600-b/s analog modems can accomplish transmission at rates nearly 200 times the spoken word using the current analog network. But the analog network was designed for voice, not data, thereby limiting modem data rates and forcing increased design complexity.
The digital network, however, has been tailored for data. It uses the same subscriber access lines (copper wire), but permits rates up to 56 kb/s, almost four times the speed of the newer breed of very high ...