tailieunhanh - GSM and UMTS (P16)

The Mandate by CEPT and the First Action Plan of 1982 The mandate given to the Technical Committee GSM by CEPT in mid-1982 requested the ‘‘harmonisation of a public mobile communication system in the 900 MHz band’’. 2 This decision took place during the very hot promotion phase for ISDN. Therefore it is remarkable to note that GSM was not defined as a ‘‘mobile ISDN’’. Instead the decision leaves the nature of the GSM open, but requests the study of the interconnection with ISDN. . | GSM and UMTS The Creation of Global Mobile Communication Edited by Friedhelm Hillebrand Copyright 2001 John Wiley Sons Ltd ISBNs 0-470-84322-5 Hardback 0-470-845546 Electronic Chapter 16 Short Message and Data Services Section 1 The Early Years from mid-1982 up to the Completion of the First Set of Specifications for Tendering in March 1988 Friedhelm Hillebrand1 The Mandate by CEPT and the First Action Plan of 1982 The mandate given to the Technical Committee GSM by CEPT in mid-1982 requested the harmonisation of a public mobile communication system in the 900 MHz band .2 This decision took place during the very hot promotion phase for ISDN. Therefore it is remarkable to note that GSM was not defined as a mobile ISDN . Instead the decision leaves the nature of the GSM open but requests the study of the interconnection with ISDN. The first action plan for the group GSM elaborated by the Nordic and Dutch PTTs was approved at the meeting GSM 1 in December 1982. It mentioned basic requirements for data services3 It is expected that in addition to normal telephone traffic other types of traffic non-speech will be required in the system. However since such predictions concerning the user requirements. will contain a great amount of uncertainty a modular system structure allowing for a maximum of flexibility will be necessary. The services offered in the public switched telephone networks and in the public data networks at the relevant period of time should be available in the mobile system. The system may also offer additional facilities. These basic requirements regarding data services were very far-sighted. They were nearly forgotten for long periods due to priorities for telephony. 1 The views expressed in this section are those of the author and do not necessarily reflect the views of his affiliation entity. 2 GSM Doc 1 82. 3 GSM Doc 2 82. 408 GSM and UMTS The Creation of Global Mobile Communication Discussions on Data Services from the Beginning of .