N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies

Module 9 - Wireless Systems and Technologies                                                                                 Slide 22 of 80                                                                                                    ________________

First -Generation (1G) System Characteristics

                          Analogue                            Hand-off Unreliable

                          Circuit Switched                   Lack of Security

                          Poor Voice Links

                          Low Capacity

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1G systems had many limitations. Second - Generation (2G) systems were developed to eliminate the limitations of the 1-G systems.