北京市电话局二区同区域交换传输维护中心自行开发的《用户性能自动增删改系统》于１９９９年６月３日通过了由市话局总工室组织的技术开发项目验收。该系统可自动完成用户性能的增删改工作。它依据长话局提供的长途直拨功能置撤单磁盘和市话营收部门的欠费停、复话单等数据，? Beijing Municipal Bureau of telephone exchange with the second regional exchange and maintenance center developed by the “user performance automatic additions and deletions to change the system” on June 3, 1999 adopted by the Central Office organized by the technology development project acceptance. The system can automatically add or delete user performance work. It is based on long distance direct dialing function provided by the long board to set aside a single disk and local revenue departments arrears stop, repeat the single and other data?