| 1. | The specification and test methods for conference telephone set
会议电话分机技术要求及测试方法 |
| 2. | The specification and test methods for conference telephone tandem board
会议电话汇接机技术要求及测试方法 |
| 3. | Conference telephone control board
会议电话主机 |
| 4. | Engineering design specification of dispatch telephone and conference telephone in industries and enterprises
工业企业调度电话和会议电话工程设计规范 |
| 5. | Specification for engineering design of dispatch telephone and conference telephone in industrial enterprises
工业企业调度电话和会议电话工程设计规范 |
| 6. | At the date and time of the call , each participant dials the preassigned conference telephone numbers to establish the voice and data connections
到了开会的日期和时间，每个与会者拨预先分配的会议电话号码，建立起声音和数据连接。 |
