JPH047625B2 - - Google Patents

Info

Publication number
JPH047625B2
JPH047625B2 JP59128323A JP12832384A JPH047625B2 JP H047625 B2 JPH047625 B2 JP H047625B2 JP 59128323 A JP59128323 A JP 59128323A JP 12832384 A JP12832384 A JP 12832384A JP H047625 B2 JPH047625 B2 JP H047625B2
Authority
JP
Japan
Prior art keywords
circuit
call
loss
detection
handset
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
JP59128323A
Other languages
English (en)
Japanese (ja)
Other versions
JPS616970A (ja
Inventor
Yoshinobu Hisatsune
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.)
Aiphone Co Ltd
Original Assignee
Aiphone 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 Aiphone Co Ltd filed Critical Aiphone Co Ltd
Priority to JP12832384A priority Critical patent/JPS616970A/ja
Publication of JPS616970A publication Critical patent/JPS616970A/ja
Publication of JPH047625B2 publication Critical patent/JPH047625B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP12832384A 1984-06-20 1984-06-20 インタ−ホン通話制御方式 Granted JPS616970A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12832384A JPS616970A (ja) 1984-06-20 1984-06-20 インタ−ホン通話制御方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12832384A JPS616970A (ja) 1984-06-20 1984-06-20 インタ−ホン通話制御方式

Publications (2)

Publication Number Publication Date
JPS616970A JPS616970A (ja) 1986-01-13
JPH047625B2 true JPH047625B2 (enrdf_load_stackoverflow) 1992-02-12

Family

ID=14981933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12832384A Granted JPS616970A (ja) 1984-06-20 1984-06-20 インタ−ホン通話制御方式

Country Status (1)

Country Link
JP (1) JPS616970A (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249682A (en) * 1975-10-17 1977-04-20 Mitsubishi Electric Corp Fluorescent mercury lamp
JPS57210752A (en) * 1981-06-22 1982-12-24 Nippon Telegr & Teleph Corp <Ntt> Telephone set

Also Published As

Publication number Publication date
JPS616970A (ja) 1986-01-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees