E-4

E-4 definition - telecom
The fourth level in the European E-carrier digital hierarchy. E-4 operates at a signaling rate of 139.268 Mbps, which supports 1,920 DS-0 channels at 64 kbps for payload. E-4 has been superseded by the SDH fiber optic transmission system (FOTS). See also channel, digital hierarchy, DS-0, E-carrier, FOTS, payload, signaling rate, and SDH.

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

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.