A field trial for laboratory experimental broadband switching system

The introduction of broadband integrated services digital network (B-ISDN) based upon asynchronous transfer mode (ATM) will be a phased approach, i.e., first private network applications followed by public network applications. The driving force of the telecommunication network migration toward B-ISDN, will be based heavily on broadband services needs as well as technology advancement. ATM has been recommended as the technology for the switching as well as the transmission networks. A preliminary broadband services market survey in Taiwan, ROC, has been done by the Telecommunication Laboratories (TL) of the Directorate General of Telecommunications (DGT). In addition, a long term broadband switch development plan has been formed with two different stages by TL. An ATM based laboratory experimental broadband switching system (LES) has been completed and a trial is being undertaken with the National Central University (NCU). The paper describes the LES architecture, service capabilities, field trial, performance evaluation and measurement