
PBXabbr.1. =private branch (telephone) exchange (电话)专用交换分机,专用电话总机pbxabbr.1. =personal business exchange 个人业务电话交换机2. =private branch exchange 专用支线交换机

PBXabbr.1. =private branch (telephone) exchange (电话)专用交换分机,专用电话总机pbxabbr.1. =personal business exchange 个人业务电话交换机2. =private branch exchange 专用支线交换机