JPS6247023B2 - - Google Patents

Info

Publication number
JPS6247023B2
JPS6247023B2 JP5953481A JP5953481A JPS6247023B2 JP S6247023 B2 JPS6247023 B2 JP S6247023B2 JP 5953481 A JP5953481 A JP 5953481A JP 5953481 A JP5953481 A JP 5953481A JP S6247023 B2 JPS6247023 B2 JP S6247023B2
Authority
JP
Japan
Prior art keywords
signal
terminal
call
subscriber
band
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
Application number
JP5953481A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57174969A (en
Inventor
Reijiro Fukutomi
Takashi Oomori
Naohiko Kamae
Juichi Sato
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5953481A priority Critical patent/JPS57174969A/ja
Publication of JPS57174969A publication Critical patent/JPS57174969A/ja
Publication of JPS6247023B2 publication Critical patent/JPS6247023B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/20—Automatic or semi-automatic exchanges with means for interrupting existing connections; with means for breaking-in on conversations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP5953481A 1981-04-20 1981-04-20 Busy incoming system Granted JPS57174969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5953481A JPS57174969A (en) 1981-04-20 1981-04-20 Busy incoming system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5953481A JPS57174969A (en) 1981-04-20 1981-04-20 Busy incoming system

Publications (2)

Publication Number Publication Date
JPS57174969A JPS57174969A (en) 1982-10-27
JPS6247023B2 true JPS6247023B2 (de) 1987-10-06

Family

ID=13116018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5953481A Granted JPS57174969A (en) 1981-04-20 1981-04-20 Busy incoming system

Country Status (1)

Country Link
JP (1) JPS57174969A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839154A (ja) * 1981-08-31 1983-03-07 Fujitsu Ltd 割込呼識別制御方式
CH674910A5 (de) * 1987-11-27 1990-07-31 Francois Joseph Camperio
CA2148023C (en) * 1994-07-01 1999-01-19 Jerry Eisdorfer Intelligent call waiting

Also Published As

Publication number Publication date
JPS57174969A (en) 1982-10-27

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