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ISDN技术指南

2019-11-04 20:38:35
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  ISDN是基于电路交换的数字化数据服务。其应用如下:
  1) 为家庭用户提供高速因特网服务。一个标准的ISDN BRI信道能提供128KBPS的速率。
  ISDN服务能够将两个64KBPS的信道合成一个128KBPS的线路。
  
  2) 用做大规模拨号访问服务器的终端电路。ISDN PRI线路是将许多拨号用户连入一个访
  问服务器的标准方法。ISDN PRI线路是一种能同时容纳23个用户的高速ISDN线路。通过一个
  ISDN PRI线路连接到访问服务器上要比用23条独立的电话线直接连到访问服务器上更灵活和廉价。
  
  3) 拨号备份。ISDN线路可用来给路由器提供备份数据通路。
  
  Supported ISDN Switch Types
  basic-1tr6 = German 1TR6 ISDN switches
  basic-5ess = AT&T basic rate switches
  basic-dms100 = NT DMS-100 basic rate switches
  basic-net3 = NET3 ISDN and Euro-ISDN switches (UK and others), also called E-DSS1 or DSS1
  basic-ni1 = National ISDN-1 switches
  basic-nwnet3 = Norway Net3 switches
  basic-nznet3 = New Zealand Net3 switches
  basic-ts013 = Australian TS013 switches
  none = No switch defined
  ntt = Japanese NTT ISDN switches (ISDN BRI only)
  primary-4ess = AT&T 4ESS switch type for the U.S. (ISDN PRI only)
  primary-5ess = AT&T 5ESS switch type for the U.S. (ISDN PRI only)
  primary-dms = 100 NT DMS-100 switch type for the U.S. (ISDN PRI only)
  primary-net5 = NET5 ISDN PRI switches (Europe)
  primary-ntt = INS-Net 1500 for Japan (ISDN PRI only)
  primary-ts014 = Australian TS014 switches (ISDN PRI only)
  vn2 French = VN2 ISDN switches (ISDN BRI only)
  vn3 French = VN3 ISDN switches (ISDN BRI only)
  vn4 French = VN4 ISDN switches (ISDN BRI only)

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