JPS5480003A - Signal tone supply system in time-division telephone ex change system - Google Patents

Signal tone supply system in time-division telephone ex change system

Info

Publication number
JPS5480003A
JPS5480003A JP14704077A JP14704077A JPS5480003A JP S5480003 A JPS5480003 A JP S5480003A JP 14704077 A JP14704077 A JP 14704077A JP 14704077 A JP14704077 A JP 14704077A JP S5480003 A JPS5480003 A JP S5480003A
Authority
JP
Japan
Prior art keywords
time
signal tone
signal
time slot
highway
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
JP14704077A
Other languages
Japanese (ja)
Inventor
Masao Wanami
Mitsuko Amano
Tahei Suzuki
Yoshiaki Tokita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14704077A priority Critical patent/JPS5480003A/en
Publication of JPS5480003A publication Critical patent/JPS5480003A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To ensure the supply of the signal tone to all channels by providing the time switch device to allot and insert the digitized signal tone to the idle time slot of the incoming side highway. CONSTITUTION:Time switch device 80 consists of time gate signal generator 81 plus AND circuits 82, 83 ... 85 and 86 which are installed with every two circuits and with every incoming highway 100 and 101. And each AND circuit inserts the signal tone of signal tone source 1 which underwent A/D conversion 4 by the signal from generator 81 into the idle signal time slot of the highway belonging to A/D converter 2 and 3. In case time-division switch device 5 performs the paired control in the 3-step switch structure of the time, gate and time, both up- and down-channel 92 and 93 are connected via the time slot of the same time between subscriber 10 and trunk 9 in order to perform conversion from the call to the time slot of the signal tone. Thus, the busy signal tone can be supplied.
JP14704077A 1977-12-09 1977-12-09 Signal tone supply system in time-division telephone ex change system Pending JPS5480003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14704077A JPS5480003A (en) 1977-12-09 1977-12-09 Signal tone supply system in time-division telephone ex change system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14704077A JPS5480003A (en) 1977-12-09 1977-12-09 Signal tone supply system in time-division telephone ex change system

Publications (1)

Publication Number Publication Date
JPS5480003A true JPS5480003A (en) 1979-06-26

Family

ID=15421150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14704077A Pending JPS5480003A (en) 1977-12-09 1977-12-09 Signal tone supply system in time-division telephone ex change system

Country Status (1)

Country Link
JP (1) JPS5480003A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56169469A (en) * 1980-05-30 1981-12-26 Fujitsu Ltd Signal tone processing system
JPS58116856A (en) * 1981-12-29 1983-07-12 Fujitsu Ltd Digital time-division switching system
JPS6085657A (en) * 1983-09-15 1985-05-15 エイ・ティ・アンド・ティ・コーポレーション Multifrequency signal supplying device and method therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56169469A (en) * 1980-05-30 1981-12-26 Fujitsu Ltd Signal tone processing system
JPS6226617B2 (en) * 1980-05-30 1987-06-10 Fujitsu Ltd
JPS58116856A (en) * 1981-12-29 1983-07-12 Fujitsu Ltd Digital time-division switching system
JPH0223065B2 (en) * 1981-12-29 1990-05-22 Fujitsu Ltd
JPS6085657A (en) * 1983-09-15 1985-05-15 エイ・ティ・アンド・ティ・コーポレーション Multifrequency signal supplying device and method therefor
JPH0773395B2 (en) * 1983-09-15 1995-08-02 エイ・ティ・アンド・ティ・コーポレーション Multi-frequency signal supply device

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