Transport Network Evolution toward ATMized B-ISDN


IEICE TRANSACTIONS on Communications   Vol.E74-B   No.4   pp.780-786
Publication Date: 1991/04/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on ATM)

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Enhancing the ISDN (Integrated Services Digital Network) capability to cover broadband capacity will change the telecommunication world greatly. This paper discusses the way where telecommunication networks should be evolved, the main features of the ATM (Asynchronous Transfer Mode) based B-ISDN, and its basic structure principles with the close relationship to customers' demands. ATM will play a key role in technology toward the B-ISDN. This paper proposes a concept of "ATMization" as the next technical revolution step coming after "digitalization". Firstly, various customers' views are summarized as four evaluation factors, and the scheme of the B-ISDN to reflect these customers demands are discussed. Then, by clearing the role of B-ISDN as the transport infrastructure, it is proposed that service control and OAM information be transferred by the ATM infrastructure. Based on these considerations, basic structure of B-ISDN and four scenario elements toward the ATMized B-ISDN era are further proposed.