Broadband/narrow-band switching network of the time-space-time type and time and space switching stages for broadband/narrow-band channels
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United States of America Patent
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Mar 7, 1989
Grant Date -
N/A
app pub date -
Mar 3, 1987
filing date -
Mar 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a switching system for a broadband ISDN-network by means of which signals can be transmitted with a large variety of bit rates. In addition to 64 kbit/s, 144 kbit/s and 2 Mbit/s narrow-band channels for inter alia telephony, data, video-information broadband channels for, for example, broadcast-TV having bit rates from 35-70 Mbit/s are switched through. For both signal catagories, a common switching system of the TST-type is utilised, which avoids the necessity of providing a multiplexer for each subscriber. The control of the time switching stages and the space switching stage forming part of the switching system is divided in a control for the broadband channels and a control for the narrow-band channels. Thus, a simple, effective control of the switching system is realised which operates at a low rate whenever possible.
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