程控用户交换机计费接口故障两例□成维和［例１］某大酒店，所使用的Ｓｏｐｈｏｓ－１０００用户交换机，设备与计费终端分别安装于３楼和１楼，计费输出接口采用ＲＳ２３２Ｃ串行口标准与计算机９针串口用通信电缆直接连接，电缆长度３０ｍ，使用一年后，出现了计算机... Programmable subscriber switch billing interface failure in two cases □ into peacekeeping and [Example 1] a hotel, the use of Sophos-1000 user switches, equipment and billing terminals were installed on the 3rd and 1st floors, billing output interface using RS 232C serial port standard and computer 9-pin serial port directly connected with the communication cable, the cable length 30m, after one year use, appeared computer ...