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Seminar - An Overview of Communications Technologies


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Module 2 - Data Communications Basics and Legacy Technologies                                                Slide 33 of 45 _________________                                                                                  __________

                                      European Digital Hierarchies

 

Digital Services Level No. of Voice Channels Transmission Rate Corresponding Transmission Service
        1           30         2.048 M bps             E-1
        2          120       8.448 M bps             E-2
        3          480       34.368 M bps             E-3
        4          1920       139.264 M bps             E-4
        5          7680      565.148 M bps             E-5

 

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European Digital Hierarchies - E system is used in Europe, India and Asian countries. North American systems require signal conversion to interface with this system.