JPS56149892A - Line concentration system of subscriber switchboard - Google Patents

Line concentration system of subscriber switchboard

Info

Publication number
JPS56149892A
JPS56149892A JP5388380A JP5388380A JPS56149892A JP S56149892 A JPS56149892 A JP S56149892A JP 5388380 A JP5388380 A JP 5388380A JP 5388380 A JP5388380 A JP 5388380A JP S56149892 A JPS56149892 A JP S56149892A
Authority
JP
Japan
Prior art keywords
line concentration
circuit
conversion
subscriber
slc
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
JP5388380A
Other languages
Japanese (ja)
Inventor
Wataru Takeuchi
Yoshiichi Chiba
Tamotsu Okita
Kenzo Tamaki
Yoshihiro Nakamura
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP5388380A priority Critical patent/JPS56149892A/en
Publication of JPS56149892A publication Critical patent/JPS56149892A/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To form a line concentration equipment by constituting a line concentration module which is provided with functions of a subscriber's circuit, a line concentration switch, a subscriber's circuit control part and a line concentration switch control part. CONSTITUTION:A telephone terminal and a subscriber's circuit package SLC are connected by two lines, and are connected to the variable channel codic circuit PCCD after they have been converted to four lines by the BORSCHT circuit BOR. The PCCD executes the operation for converting an analog sound signal to a digital sound code having an optional time slot, and vice versa, in accordance with the timing of AD conversion and DA conversion, which has been provided from the line concentration control part SLCC, and has both functions of AD conversion and time division switching. A digital code after AD conversion passes through the highway selecting circuit HSL, and after that, it is sent out to one of HW1-HW . The AD conversion output in one subscriber's circuit package is brought to OR in the SLC. The highway which has been sent out from the SLC in one line concentration module SCU is brought to OR in the SLCC.
JP5388380A 1980-04-23 1980-04-23 Line concentration system of subscriber switchboard Pending JPS56149892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5388380A JPS56149892A (en) 1980-04-23 1980-04-23 Line concentration system of subscriber switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5388380A JPS56149892A (en) 1980-04-23 1980-04-23 Line concentration system of subscriber switchboard

Publications (1)

Publication Number Publication Date
JPS56149892A true JPS56149892A (en) 1981-11-19

Family

ID=12955130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5388380A Pending JPS56149892A (en) 1980-04-23 1980-04-23 Line concentration system of subscriber switchboard

Country Status (1)

Country Link
JP (1) JPS56149892A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991791A (en) * 1982-11-17 1984-05-26 Fujitsu Ltd Subscriber line concentrator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991791A (en) * 1982-11-17 1984-05-26 Fujitsu Ltd Subscriber line concentrator

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