JPS55112066A - Connection system to busy extension telephone - Google Patents

Connection system to busy extension telephone

Info

Publication number
JPS55112066A
JPS55112066A JP2043979A JP2043979A JPS55112066A JP S55112066 A JPS55112066 A JP S55112066A JP 2043979 A JP2043979 A JP 2043979A JP 2043979 A JP2043979 A JP 2043979A JP S55112066 A JPS55112066 A JP S55112066A
Authority
JP
Japan
Prior art keywords
busy
subscriber
called subscriber
called
state
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.)
Pending
Application number
JP2043979A
Other languages
Japanese (ja)
Inventor
Seiichi Inoue
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2043979A priority Critical patent/JPS55112066A/en
Publication of JPS55112066A publication Critical patent/JPS55112066A/en
Pending 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
    • H04M3/48—Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To secure the automatic calling to the called subscriber at the moment when the called subscriber is put under the idle state, by securing the queuing state with the busy tone being heard and with no special operation given in case the calling subscriber encounters the busy state of the called subscriber. CONSTITUTION:When calling subscriber SUBA has dialing in the normal way to call called subscriber SUBB, the called number is detected by register control circuit REGC and through originating register OR to be then memorized in memory device MU via central controller CC. Controller CC retrieves the number group table memorized in device MU via the called number received from SUBA, and then gives the busy checking to the called subscriber retrieved. And if the busy state is decided, controller CC transfers the storage position information of the trunk which is used by SUBB for talking plus the calling subscriber storage position information to trunk scanner TSC and busy extension monitor unit BSS through buses SP BUS in order to give monitoring for the idle state of the called subscriber.
JP2043979A 1979-02-22 1979-02-22 Connection system to busy extension telephone Pending JPS55112066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2043979A JPS55112066A (en) 1979-02-22 1979-02-22 Connection system to busy extension telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2043979A JPS55112066A (en) 1979-02-22 1979-02-22 Connection system to busy extension telephone

Publications (1)

Publication Number Publication Date
JPS55112066A true JPS55112066A (en) 1980-08-29

Family

ID=12027067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2043979A Pending JPS55112066A (en) 1979-02-22 1979-02-22 Connection system to busy extension telephone

Country Status (1)

Country Link
JP (1) JPS55112066A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02277365A (en) * 1989-04-19 1990-11-13 Hitachi Terekomu Technol:Kk Dial-in camp-on system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02277365A (en) * 1989-04-19 1990-11-13 Hitachi Terekomu Technol:Kk Dial-in camp-on system

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