JPS57183165A - Incoming connection system - Google Patents

Incoming connection system

Info

Publication number
JPS57183165A
JPS57183165A JP6664081A JP6664081A JPS57183165A JP S57183165 A JPS57183165 A JP S57183165A JP 6664081 A JP6664081 A JP 6664081A JP 6664081 A JP6664081 A JP 6664081A JP S57183165 A JPS57183165 A JP S57183165A
Authority
JP
Japan
Prior art keywords
circuit
signal
incoming
telephone set
selecting
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
JP6664081A
Other languages
Japanese (ja)
Inventor
Kenichi Ishii
Kazuyuki Yamamoto
Teruyuki Kubo
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.)
NTT Inc
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 JP6664081A priority Critical patent/JPS57183165A/en
Publication of JPS57183165A publication Critical patent/JPS57183165A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To make a connection with an optional circuit even during incoming ringing operation by operating buttons by equipping a selecting circuit which selects the output signal of an incoming detecting circuit or a selected button detecting circuit. CONSTITUTION:An incoming signal to a telephone set is detected by an incoming signal detecting circuit 3 and set to the 2nd selecting circuit 5 to select a circuit with top priority. When a hook switch 1 is turned off in said incoming ringing state, an AND signal closes a switching element 6 to form a speech path extending to a telephone set 7. On the other hand, when a circuit selection button 2 for a circuit used for origination is pressed, its signal is sent to the 1st selecting circuit 4, which holds this signal for a certain time. When the hook switch 1 is turned off during said holding operation, a switching element 6 which corresponds to the circuit button pressed previously is closed to form a speech path which corresponds to the circuit and extends to the telephone set 7.
JP6664081A 1981-05-01 1981-05-01 Incoming connection system Pending JPS57183165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6664081A JPS57183165A (en) 1981-05-01 1981-05-01 Incoming connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6664081A JPS57183165A (en) 1981-05-01 1981-05-01 Incoming connection system

Publications (1)

Publication Number Publication Date
JPS57183165A true JPS57183165A (en) 1982-11-11

Family

ID=13321694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6664081A Pending JPS57183165A (en) 1981-05-01 1981-05-01 Incoming connection system

Country Status (1)

Country Link
JP (1) JPS57183165A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549067A (en) * 1991-02-01 1993-02-26 Canon Inc Communication device
JP2008126421A (en) * 2006-11-16 2008-06-05 Hiroshi Ishiguro Seal and seal set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549067A (en) * 1991-02-01 1993-02-26 Canon Inc Communication device
JP2008126421A (en) * 2006-11-16 2008-06-05 Hiroshi Ishiguro Seal and seal set

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