JPS56149196A - Many-subscribers calling device - Google Patents

Many-subscribers calling device

Info

Publication number
JPS56149196A
JPS56149196A JP5240480A JP5240480A JPS56149196A JP S56149196 A JPS56149196 A JP S56149196A JP 5240480 A JP5240480 A JP 5240480A JP 5240480 A JP5240480 A JP 5240480A JP S56149196 A JPS56149196 A JP S56149196A
Authority
JP
Japan
Prior art keywords
subscriber
telephone set
converters
many
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.)
Granted
Application number
JP5240480A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6363144B2 (enrdf_load_stackoverflow
Inventor
Toru Takei
Yoshiaki Tokita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5240480A priority Critical patent/JPS56149196A/ja
Publication of JPS56149196A publication Critical patent/JPS56149196A/ja
Publication of JPS6363144B2 publication Critical patent/JPS6363144B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
JP5240480A 1980-04-22 1980-04-22 Many-subscribers calling device Granted JPS56149196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5240480A JPS56149196A (en) 1980-04-22 1980-04-22 Many-subscribers calling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5240480A JPS56149196A (en) 1980-04-22 1980-04-22 Many-subscribers calling device

Publications (2)

Publication Number Publication Date
JPS56149196A true JPS56149196A (en) 1981-11-18
JPS6363144B2 JPS6363144B2 (enrdf_load_stackoverflow) 1988-12-06

Family

ID=12913844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5240480A Granted JPS56149196A (en) 1980-04-22 1980-04-22 Many-subscribers calling device

Country Status (1)

Country Link
JP (1) JPS56149196A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154959U (ja) * 1983-04-04 1984-10-17 アンリツ株式会社 ル−プ伝送路における会議通話回路
JPS639298A (ja) * 1986-06-30 1988-01-14 Mitsubishi Electric Corp 方路選択回路

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474610A (en) * 1977-11-28 1979-06-14 Oki Electric Ind Co Ltd Meeting communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474610A (en) * 1977-11-28 1979-06-14 Oki Electric Ind Co Ltd Meeting communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154959U (ja) * 1983-04-04 1984-10-17 アンリツ株式会社 ル−プ伝送路における会議通話回路
JPS639298A (ja) * 1986-06-30 1988-01-14 Mitsubishi Electric Corp 方路選択回路

Also Published As

Publication number Publication date
JPS6363144B2 (enrdf_load_stackoverflow) 1988-12-06

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