The commercialization conditions of the global N-ISDN and the development trend of B-ISDN reveal that N-ISDN has stepped out of ebbtide and B-ISDN is entering the market.
本文介绍了全球N-ISDN商用情况B-ISDN,示出N-ISDN走出低谷、B-ISDN迈向市场美好前景。
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