digital signal hierarchy

digital signal hierarchy definition - telecom
The hierarchy of digital signal levels in the European E-carrier, Japanese J-carrier, and North American T-carrier systems. In the North American hierarchy, the term digital signal (DS) level is specifically used. See Table D-1 for a side-by-side comparison. See E-carrier, J-carrier, and T-carrier.
Table D-1: Digital Hierarchy: T-Carrier, E-Carrier, and J-Carrier
Signal LevelNumber of Data ChannelsTotal Signaling Rate (Mbps)
T-Carrier (North America)E-Carrier (Europe)J-Carrier (Japan)
010.0640.0640.064
1241.5441.544
302.048
1C483.152
2966.3126.312
1208.4487.786
348034.36832.064
67244.736
3C1,34491.053
41,44097.728
1,920139.268
4,032274.176
55,760400.352
7,680565.148565.148
630,7202200.00

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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