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PBX telephone exchange with reduced number of cross points - uses through connection matrix with cross points coacting in enquiry calls
PBX telephone exchange with reduced number of cross points - uses through connection matrix with cross points coacting in enquiry calls
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机译:交叉点数量减少的PBX电话交换机-通过连接矩阵与交叉点配合使用在查询呼叫中
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摘要
The number of crosspoints involved in an enquiry call is kept as small as possible. This is achieved by operating the through connection coupling matrix as a reflection matrix, when in its through connection mode, and by connecting its second connecting level to a through connection enquiry coupling network whose other connection level is connected to the enquiry outputs of the line transformers. For constructing enquiry connections both the two line transfer circuits and the through connection coupling matrix are involved.
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