JPS5737964A - Controlling system for digital pad - Google Patents

Controlling system for digital pad

Info

Publication number
JPS5737964A
JPS5737964A JP11169280A JP11169280A JPS5737964A JP S5737964 A JPS5737964 A JP S5737964A JP 11169280 A JP11169280 A JP 11169280A JP 11169280 A JP11169280 A JP 11169280A JP S5737964 A JPS5737964 A JP S5737964A
Authority
JP
Japan
Prior art keywords
call
digital pad
telephone
data
local
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
JP11169280A
Other languages
Japanese (ja)
Inventor
Kozo Kamata
Kaoru Tokunaga
Yutaka Fukushima
Yuichi Morikawa
Takao Kobayashi
Yasukazu Terada
Hirohiko 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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP11169280A priority Critical patent/JPS5737964A/en
Publication of JPS5737964A publication Critical patent/JPS5737964A/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)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To easily remove senses of incompatibility caused by decline of talking sound volumes, by adjusting intraexchange loss amounts with digital pad control, in a time division telephone exchange device. CONSTITUTION:When a subscriber's telephone set to be connected is selected through dial pulses from a telephone set 1, whether data from a pad memory 102 can be used or not is displayed on a channel location corresponding to a display memory 28 from the central processor 20 in accordance with the kind of the call, local call or trunk call. When the call is a local call, data to be attenuated are sent to a parallel-series converter 106 by a gate signal from the display memory 28. Moreover, when the call is a trunk call, data which have not received any attenuation from a register 101, are sent to the parallel-series converter 106. When the exchange device of the subscriber's telephone to whom the call is made, does not have any digital pad controlling function in a local connection, a digital pad controller 26 at the receiving side performs the digital pad control.
JP11169280A 1980-08-15 1980-08-15 Controlling system for digital pad Pending JPS5737964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11169280A JPS5737964A (en) 1980-08-15 1980-08-15 Controlling system for digital pad

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11169280A JPS5737964A (en) 1980-08-15 1980-08-15 Controlling system for digital pad

Publications (1)

Publication Number Publication Date
JPS5737964A true JPS5737964A (en) 1982-03-02

Family

ID=14567741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11169280A Pending JPS5737964A (en) 1980-08-15 1980-08-15 Controlling system for digital pad

Country Status (1)

Country Link
JP (1) JPS5737964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01264493A (en) * 1988-04-15 1989-10-20 Nec Corp Speaking level compensating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01264493A (en) * 1988-04-15 1989-10-20 Nec Corp Speaking level compensating system

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