发明授权
- 专利标题: Multi-link telephone intercom system
- 专利标题(中): 多连接电话对讲系统
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申请号: US873157申请日: 1978-01-27
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公开(公告)号: US4188511A公开(公告)日: 1980-02-12
- 发明人: Maurice I. Smith , John D. Gillen , Gerald L. Edwards
- 申请人: Maurice I. Smith , John D. Gillen , Gerald L. Edwards
- 申请人地址: WA Redmond
- 专利权人: Tone Commander Systems, Inc.
- 当前专利权人: Tone Commander Systems, Inc.
- 当前专利权人地址: WA Redmond
- 主分类号: H04M9/00
- IPC分类号: H04M9/00 ; H04M9/06
摘要:
The system includes up to four communication links, a separate link selector for each link, and a separate link scanner for each telephone station. The system is suitable for usage with conventional dial pulse or tone selective key telephone sets.
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