PBX User Board Trial Instrument
程控交换机用户板测试仪
LCPBX Large Computerized Private Branch eXchange
大型计算机化私用分支交换机
Responsible for the overall PBX department.
负责管理总机。
By IP PBX technology and soft exchange.
技术与软交换
pbx pilot number
专用小交换引示号码
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