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Nortel Meridian
Nortel Meridian is a private branch exchange. It provides advanced voice features, data connectivity, LAN communications, computer telephony integration (CTI), and information services for communication applications ranging from 60 to 80,000 lines.〔(【引用サイトリンク】 work = Nortel Networks website )〕
==History==
Exploratory development on digital technology, common for the SL-1 (PBX) and the DMS (public switch) product lines, began in 1969 at Northern Telecom, while R&D activities related to the SL-1 started in June 1973. SL stands for Stored Logic.〔"L'empire Invisible" by Jean-Guy Rens, History of telecommunications in Canada, 1956-Today〕
It was introduced by Northern Telecom in December 1975, with an original capacity from 100 to 7,600 lines, and became the first fully digital PBX announced on the global market aimed at the smaller PBX market. In the early 1970s, most PBXs were either electromechanical (e.g. cross-bar) or based on a hybrid technology (e.g. switching matrix made from a two-dimensional array of contacts but control performed by an electronic logic). For this reason, the SL-1 enjoyed a great success on the enterprise market both in North-America and globally.〔〔(【引用サイトリンク】 work = Nortel Networks website )〕〔(Nortel (Northern Telecom) Modern Telephone Systems )〕
Its success went on to power the company into a leadership position in the telephony world, and led to expanded designs "up and down" to provide products at all sizes, including the DMS series high-end machines, and the Meridian Norstar for smaller installations up to 200 users. The SL-1 was gradually enhanced (peripheral hardware, packaging, etc.) and renamed Meridian-1 in the late 1980s. The Meridian-1 has evolved to support IP telephony and other next generation IP services.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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