ZA852139B - Communication system line expansion apparatus and method - Google Patents

Communication system line expansion apparatus and method

Info

Publication number
ZA852139B
ZA852139B ZA852139A ZA852139A ZA852139B ZA 852139 B ZA852139 B ZA 852139B ZA 852139 A ZA852139 A ZA 852139A ZA 852139 A ZA852139 A ZA 852139A ZA 852139 B ZA852139 B ZA 852139B
Authority
ZA
South Africa
Prior art keywords
communication system
system line
expansion apparatus
line expansion
communication
Prior art date
Application number
ZA852139A
Other languages
English (en)
Inventor
Santanu Das
Francisco Auturo Middleton
Nicholas John Robert Carter
Original Assignee
Int Standard Electric 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of ZA852139B publication Critical patent/ZA852139B/xx

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
    • 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)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)
ZA852139A 1984-03-30 1985-03-21 Communication system line expansion apparatus and method ZA852139B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/595,094 US4602363A (en) 1984-03-30 1984-03-30 Expansion apparatus for use in communication systems

Publications (1)

Publication Number Publication Date
ZA852139B true ZA852139B (en) 1985-11-27

Family

ID=24381705

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA852139A ZA852139B (en) 1984-03-30 1985-03-21 Communication system line expansion apparatus and method

Country Status (6)

Country Link
US (1) US4602363A (xx)
KR (1) KR850006842A (xx)
BR (1) BR8501359A (xx)
EG (1) EG17243A (xx)
IN (1) IN164287B (xx)
ZA (1) ZA852139B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754479A (en) * 1986-09-17 1988-06-28 American Telephone And Telegraph Company Station number portability
US4757526A (en) * 1987-04-16 1988-07-12 American Telephone And Telegraph Company, At&T Bell Laboratories Signal transfer arrangement
US5333187A (en) * 1989-04-28 1994-07-26 Hitachi, Ltd. Switching system for electronic switcher
DE69028443T2 (de) * 1989-05-24 1997-02-06 At & T Corp Betriebssicherheitsverbesserung in Vermittlungssystemen
ES2048046B1 (es) * 1991-08-30 1996-08-01 Telefonica Nacional Espana Co Equipo adaptador para extension distante de centralita privada de abonado
CA2052499C (en) * 1991-09-30 1994-11-29 Deborah L. Pinard Host remote signalling in telephone systems
DE69635434T2 (de) * 1995-02-28 2006-07-27 Koninklijke Philips Electronics N.V. Telekommunikationssystem
US20020110235A1 (en) * 2001-02-09 2002-08-15 Al Simpson Private telephone management system and method
DE102004041823B4 (de) * 2004-08-27 2014-03-20 Robert Bosch Gmbh Kommunikationsbaustein mit einem Kommunikationsschnittstellenelement und Kommunikationsschnittstellenelement
CN107748724B (zh) * 2017-09-01 2023-08-29 珠海格力电器股份有限公司 一种通讯接口拓展装置、控制器及其通讯接口拓展方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259549A (en) * 1976-10-21 1981-03-31 Wescom Switching, Inc. Dialed number to function translator for telecommunications switching system control complex
US4166929A (en) * 1978-02-17 1979-09-04 Bell Telephone Laboratories, Incorporated Interoffice callback arrangement
US4442321A (en) * 1981-06-08 1984-04-10 Rockwell International Corporation Transparent dialing between interconnected telecommunication switching systems
US4488004A (en) * 1982-03-30 1984-12-11 At&T Bell Laboratories Providing feature transparency between a plurality of PBXs
US4534023A (en) * 1983-10-07 1985-08-06 At&T Information Systems Inc. Plural communication channel protocol support systems

Also Published As

Publication number Publication date
IN164287B (xx) 1989-02-11
KR850006842A (ko) 1985-10-16
BR8501359A (pt) 1985-11-19
EG17243A (en) 1990-12-30
US4602363A (en) 1986-07-22

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