JPS6424554A - Conference telephone device - Google Patents

Conference telephone device

Info

Publication number
JPS6424554A
JPS6424554A JP17990087A JP17990087A JPS6424554A JP S6424554 A JPS6424554 A JP S6424554A JP 17990087 A JP17990087 A JP 17990087A JP 17990087 A JP17990087 A JP 17990087A JP S6424554 A JPS6424554 A JP S6424554A
Authority
JP
Japan
Prior art keywords
external equipment
conference
communication
turned
wire
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.)
Granted
Application number
JP17990087A
Other languages
Japanese (ja)
Other versions
JP2601280B2 (en
Inventor
Yosuke Hiromi
Kazuyuki Watanabe
Hiroshi Oikawa
Masakazu Nishino
Mizuhiro Hida
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.)
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Iwatsu Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Iwatsu Electric Co Ltd
Priority to JP17990087A priority Critical patent/JP2601280B2/en
Publication of JPS6424554A publication Critical patent/JPS6424554A/en
Application granted granted Critical
Publication of JP2601280B2 publication Critical patent/JP2601280B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To interrupt and restore the communication of external equipment in a conference talk without intermitting a conference by connecting a conference speaking line to a two-wire/four-wire converting circuit and also connecting the two-wire/ four-wire converting circuit to a communication line when the external equipment acquires or releases the line. CONSTITUTION:When the external equipment 11 is used, a hook switch 111 in the external equipment 11 is turned on and then a current flows from the communication line to the external equipment 11 and a current detecting circuit 21 detects the current to inform a conference talk switching control part 6 that the external equipment 11 is placed in a use state; and changeover switches 3 and 4 are placed on side 3b and 4b and a changeover switch 5 is turned on. Consequently, the conference talk is performed by a communication line 1 and external equipment communication is made by a communication line 2. Further, when the external equipment communication is finished, the hook switch 111 is turned off and then a conference talk switching control part 6 is informed by the current detecting circuit 21 that the external equipment 11 finishes the communication; and the changeover switches 3 and 4 are placed on sides 3a and 4a and the changeover switch 5 is turned off to restart a conference talk by two lines.
JP17990087A 1987-07-21 1987-07-21 Conference phone equipment Expired - Lifetime JP2601280B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17990087A JP2601280B2 (en) 1987-07-21 1987-07-21 Conference phone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17990087A JP2601280B2 (en) 1987-07-21 1987-07-21 Conference phone equipment

Publications (2)

Publication Number Publication Date
JPS6424554A true JPS6424554A (en) 1989-01-26
JP2601280B2 JP2601280B2 (en) 1997-04-16

Family

ID=16073864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17990087A Expired - Lifetime JP2601280B2 (en) 1987-07-21 1987-07-21 Conference phone equipment

Country Status (1)

Country Link
JP (1) JP2601280B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000017419A (en) * 1998-08-21 2000-03-25 루센트 테크놀러지스 인크 Method for solving the music-on-hold problem in an audio conference
JP2007251412A (en) * 2006-03-14 2007-09-27 Oki Electric Ind Co Ltd Radio terminal accommodation unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000017419A (en) * 1998-08-21 2000-03-25 루센트 테크놀러지스 인크 Method for solving the music-on-hold problem in an audio conference
JP2007251412A (en) * 2006-03-14 2007-09-27 Oki Electric Ind Co Ltd Radio terminal accommodation unit

Also Published As

Publication number Publication date
JP2601280B2 (en) 1997-04-16

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