The E-Carrier
The basic unit of the E-carrier system is the 64-kbps DS0, which is multiplexed to form transmis-sion formats with higher speeds. The E1 consists of 32 DS0 channels. The E-carrier is a European digital transmission format devised by the International Telecommunication Union Telecommu-nication Standardization Sector (ITU-T) and given the name by the Conference of European Postal and Telecommunication Administration (CEPT). E2 through E5 are carriers in increasing multiples of the E1 format. The E1 signal format carries data at a rate of 2.048 Mbps and can carry 32 channels of 64 kbps each. Unlike T1, it does not bit-rob and all 8 bits per channel are used to code the signal. E1 and T1 can be interconnected for international use. ...
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