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ＡＤＰＣＭ增容设备投入使用由江西省邮电科学研究所在引进国外先进技术基础上开发的ＰＣＭ／ＡＤＰＣＭ编码转换设备于１９９４年５月１４日在南昌至进贤数字电路上投入使用。该设备全部采用进口元器件，在现有数字传输设备不变的情况下，使数字电路容量提高一倍．是解决...
ADPCM compatibilizer put into use By the Jiangxi Posts and Telecommunications Institute of Science and Technology in the introduction of foreign advanced technology based on the development of PCM / ADPCM code conversion equipment in May 14, 1994 in Nanchang to Jinxian digital circuits put into use. The device uses imported components, the existing digital transmission equipment unchanged, so that the digital circuit capacity doubled. Is to solve ...