JPS5650693A - System indirect connection system for key telephone device - Google Patents

System indirect connection system for key telephone device

Info

Publication number
JPS5650693A
JPS5650693A JP12635279A JP12635279A JPS5650693A JP S5650693 A JPS5650693 A JP S5650693A JP 12635279 A JP12635279 A JP 12635279A JP 12635279 A JP12635279 A JP 12635279A JP S5650693 A JPS5650693 A JP S5650693A
Authority
JP
Japan
Prior art keywords
telephone
circuit
signal
talking
key
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
JP12635279A
Other languages
Japanese (ja)
Other versions
JPS6053516B2 (en
Inventor
Koichi Sekiguchi
Seiya Uchida
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.)
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Iwatsu Electric Co Ltd
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 Iwatsu Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Iwatsu Electric Co Ltd
Priority to JP54126352A priority Critical patent/JPS6053516B2/en
Publication of JPS5650693A publication Critical patent/JPS5650693A/en
Publication of JPS6053516B2 publication Critical patent/JPS6053516B2/en
Expired 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

Abstract

PURPOSE:To secure a connection among systems via an exclusive line, by using the specified AC signal for the control signal and at the same time using the holding/ transfer means incorporated into the key telephone system. CONSTITUTION:With push down of the key of the key telephone 17 in the system A, the signal is supplied to the main control circuit 3. Thus the telephone 17 is connected to the talking link 32. After this, with a dial operation of the telephone 17, the dial signal drives the oscillating circuit 4. And the output signal is sent to the reception circuit 8 of the system B via the exclusive cable 34. The control circuit 15 processes the signal, and the talking becomes possible between the telephones 17 and 18 via the talking links 32 and 33 plus the cable 34 each. Then with push of the holding key of the telephone 18, the circuit 15 and the holding circuit of the main unit 2 work to make a talking possible between the telephones 18 and 19. Thus the telephone 19 knows the incoming call. And the relevant key is pushed to open the circuit 16 to make a talking possible between the telephones 17 and 19.
JP54126352A 1979-10-02 1979-10-02 Intersystem connection method for button telephone equipment Expired JPS6053516B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54126352A JPS6053516B2 (en) 1979-10-02 1979-10-02 Intersystem connection method for button telephone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54126352A JPS6053516B2 (en) 1979-10-02 1979-10-02 Intersystem connection method for button telephone equipment

Publications (2)

Publication Number Publication Date
JPS5650693A true JPS5650693A (en) 1981-05-07
JPS6053516B2 JPS6053516B2 (en) 1985-11-26

Family

ID=14933045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54126352A Expired JPS6053516B2 (en) 1979-10-02 1979-10-02 Intersystem connection method for button telephone equipment

Country Status (1)

Country Link
JP (1) JPS6053516B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218294A (en) * 1985-03-25 1986-09-27 Nitsuko Ltd Connecting system for inter-key telephone sets
US6430280B1 (en) 1999-07-09 2002-08-06 Matsushita Electric Industrial Co., Ltd. Telephone main unit and telephone control apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218294A (en) * 1985-03-25 1986-09-27 Nitsuko Ltd Connecting system for inter-key telephone sets
US6430280B1 (en) 1999-07-09 2002-08-06 Matsushita Electric Industrial Co., Ltd. Telephone main unit and telephone control apparatus

Also Published As

Publication number Publication date
JPS6053516B2 (en) 1985-11-26

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