JPH0649005Y2 - 電話会議装置の内線アダプタ - Google Patents

電話会議装置の内線アダプタ

Info

Publication number
JPH0649005Y2
JPH0649005Y2 JP4953187U JP4953187U JPH0649005Y2 JP H0649005 Y2 JPH0649005 Y2 JP H0649005Y2 JP 4953187 U JP4953187 U JP 4953187U JP 4953187 U JP4953187 U JP 4953187U JP H0649005 Y2 JPH0649005 Y2 JP H0649005Y2
Authority
JP
Japan
Prior art keywords
telephone
telephone line
line
conference
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP4953187U
Other languages
English (en)
Japanese (ja)
Other versions
JPS63156149U (en]
Inventor
泰三 鷹取
正昭 木原
潔 岡本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tatsuta Electric Wire and Cable Co Ltd
Original Assignee
Tatsuta Electric Wire and Cable Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tatsuta Electric Wire and Cable Co Ltd filed Critical Tatsuta Electric Wire and Cable Co Ltd
Priority to JP4953187U priority Critical patent/JPH0649005Y2/ja
Publication of JPS63156149U publication Critical patent/JPS63156149U/ja
Application granted granted Critical
Publication of JPH0649005Y2 publication Critical patent/JPH0649005Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP4953187U 1987-03-31 1987-03-31 電話会議装置の内線アダプタ Expired - Lifetime JPH0649005Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4953187U JPH0649005Y2 (ja) 1987-03-31 1987-03-31 電話会議装置の内線アダプタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4953187U JPH0649005Y2 (ja) 1987-03-31 1987-03-31 電話会議装置の内線アダプタ

Publications (2)

Publication Number Publication Date
JPS63156149U JPS63156149U (en]) 1988-10-13
JPH0649005Y2 true JPH0649005Y2 (ja) 1994-12-12

Family

ID=30872066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4953187U Expired - Lifetime JPH0649005Y2 (ja) 1987-03-31 1987-03-31 電話会議装置の内線アダプタ

Country Status (1)

Country Link
JP (1) JPH0649005Y2 (en])

Also Published As

Publication number Publication date
JPS63156149U (en]) 1988-10-13

Similar Documents

Publication Publication Date Title
US5838665A (en) Data network telephone adaptor device
US6859525B1 (en) Internet telephony device
US7899437B2 (en) Speakerphone control techniques and emergency call systems
JPH03155257A (ja) 分散制御通信会議装置
US20050094792A1 (en) Central-office-enabled muting of telephones
US5937334A (en) Radio communications and telephone network interface system
JPH0649005Y2 (ja) 電話会議装置の内線アダプタ
US8812032B2 (en) Cordless telephone system
US9614970B1 (en) Telephone conferencing apparatus
JP3654186B2 (ja) ワイヤレスインターホンシステム
JPS60169262A (ja) 会議用電話装置
JP2001309042A (ja) 通信システム
JPH0649004Y2 (ja) 電話回線の簡易模擬アダプタ
US3870819A (en) Conference call apparatus for use with key telephone system equipment
JPH01300754A (ja) 会議電話端末装置
JPS62122453A (ja) 多人数で会話できる電話線の使用法
JP2753305B2 (ja) 電話交換システム
JPH066470A (ja) 構内交換電話システム
JPS59111425A (ja) 会議電話装置
JPS59168727A (ja) 双方向増幅器
JP2008131133A (ja) 電話システム
JPH05114956A (ja) 電話を利用したランゲージサービス装置
JPS5862957A (ja) 内線ハンドフリ−応答回路
JPS63299563A (ja) 交換機
Holbrook et al. A two-wire teleconferencing terminal