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一线多号——程控交换新业务＠金春林一线多号——程控交换新业务金春林随着大量非话业务的发展及计算机的不断普及，ＩＳＤＮ综合业务数字网的开通运行，社会对电话号线提出了新的要求，一根号线已不能满足用户的通信需求。然而，在近期还不具备条件在普通家庭中拥有２对或２对...
A number of multi-line - program-controlled exchange of new business @ Jinchun Lin line number - program-controlled exchange of new business Jinchun Lin With the development of a large number of non-voice services and the ever-increasing popularity of computers, ISDN Integrated Services Digital Network opened, the community put forward telephone lines A new request, a number line can no longer meet the user’s communication needs. However, in the near future there is no requirement to have 2 or 2 pairs in the average family ...