Title:
収容音声チャネル高密度化構内電話交換機および高密度化方法
Document Type and Number:
Japanese Patent JP5924216
Kind Code:
B2
Inventors:
Yusuke Arata
Application Number:
JP2012214093A
Publication Date:
May 25, 2016
Filing Date:
September 27, 2012
Export Citation:
Assignee:
Oki Electric Industry Co., Ltd.
International Classes:
H04Q3/58
Domestic Patent References:
| JP5014954A | ||||
| JP5064242A | ||||
| JP7245792A | ||||
| JP8079215A | ||||
| JP9219689A |
Attorney, Agent or Firm:
Takao Katori