JPS52125210A - Internal call folding unit in concentrating line type subscriber line carrier system - Google Patents

Internal call folding unit in concentrating line type subscriber line carrier system

Info

Publication number
JPS52125210A
JPS52125210A JP4212276A JP4212276A JPS52125210A JP S52125210 A JPS52125210 A JP S52125210A JP 4212276 A JP4212276 A JP 4212276A JP 4212276 A JP4212276 A JP 4212276A JP S52125210 A JPS52125210 A JP S52125210A
Authority
JP
Japan
Prior art keywords
carrier system
concentrating
folding unit
internal call
subscriber line
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
JP4212276A
Other languages
Japanese (ja)
Inventor
Kenichi Nakajima
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4212276A priority Critical patent/JPS52125210A/en
Publication of JPS52125210A publication Critical patent/JPS52125210A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/60—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To enable the internal connection call back unit in concentrating subscriber line carrier system, by decreasing the transfer burden of digital carrier loop and lowering the call loss rate.
JP4212276A 1976-04-14 1976-04-14 Internal call folding unit in concentrating line type subscriber line carrier system Pending JPS52125210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4212276A JPS52125210A (en) 1976-04-14 1976-04-14 Internal call folding unit in concentrating line type subscriber line carrier system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4212276A JPS52125210A (en) 1976-04-14 1976-04-14 Internal call folding unit in concentrating line type subscriber line carrier system

Publications (1)

Publication Number Publication Date
JPS52125210A true JPS52125210A (en) 1977-10-20

Family

ID=12627135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4212276A Pending JPS52125210A (en) 1976-04-14 1976-04-14 Internal call folding unit in concentrating line type subscriber line carrier system

Country Status (1)

Country Link
JP (1) JPS52125210A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145413A (en) * 1978-05-06 1979-11-13 Fujitsu Ltd Connection system for two-party line
JPS55133197A (en) * 1979-04-04 1980-10-16 Nec Corp Exchange system for ring transmission line
US6883094B2 (en) 2001-09-28 2005-04-19 Fujitsu Limited Communication device for monitoring datalink layer information and outputting data based on communication request information type

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145413A (en) * 1978-05-06 1979-11-13 Fujitsu Ltd Connection system for two-party line
JPS584520B2 (en) * 1978-05-06 1983-01-26 富士通株式会社 Two joint subscriber connection methods
JPS55133197A (en) * 1979-04-04 1980-10-16 Nec Corp Exchange system for ring transmission line
US6883094B2 (en) 2001-09-28 2005-04-19 Fujitsu Limited Communication device for monitoring datalink layer information and outputting data based on communication request information type

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