CA992184A - Telephone system having a plurality of classes of services - Google Patents

Telephone system having a plurality of classes of services

Info

Publication number
CA992184A
CA992184A CA163,175A CA163175A CA992184A CA 992184 A CA992184 A CA 992184A CA 163175 A CA163175 A CA 163175A CA 992184 A CA992184 A CA 992184A
Authority
CA
Canada
Prior art keywords
classes
services
telephone system
telephone
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.)
Expired
Application number
CA163,175A
Other versions
CA163175S (en
Inventor
Jean P. Calvino
Bernard Grandry
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA992184A publication Critical patent/CA992184A/en
Expired 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
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

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)
  • Telephonic Communication Services (AREA)
  • Exchange Systems With Centralized Control (AREA)
CA163,175A 1972-02-08 1973-01-31 Telephone system having a plurality of classes of services Expired CA992184A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7204896A FR2171676A5 (en) 1972-02-08 1972-02-08

Publications (1)

Publication Number Publication Date
CA992184A true CA992184A (en) 1976-06-29

Family

ID=9093461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA163,175A Expired CA992184A (en) 1972-02-08 1973-01-31 Telephone system having a plurality of classes of services

Country Status (7)

Country Link
JP (1) JPS4893206A (en)
BE (1) BE795147A (en)
CA (1) CA992184A (en)
DE (1) DE2304925C3 (en)
FR (1) FR2171676A5 (en)
GB (1) GB1408713A (en)
IT (1) IT978737B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830282C3 (en) * 1978-07-10 1981-10-15 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for telecommunication switching systems, in particular telephone switching systems with devices for authorization evaluation
DE2830281C3 (en) * 1978-07-10 1981-06-25 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with devices for evaluating authorization
DE2929514C2 (en) * 1979-07-20 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Method for querying subscriber authorizations in a centrally controlled telephone private branch exchange
DE3432144A1 (en) * 1984-08-31 1986-03-13 Siemens AG, 1000 Berlin und 8000 München Method for a dial-up PBX system which is fitted with an operational terminal
DE3433660A1 (en) * 1984-09-13 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Method for a dial-up PBX system which is fitted with an operational terminal
DE3725061A1 (en) * 1987-07-29 1989-02-09 Telefonbau & Normalzeit Gmbh Arrangement for monitoring multi-digit subscriber numbers for telecommunications exchanges, especially telephone exchanges
DE3932689A1 (en) * 1989-09-29 1991-04-11 Siemens Ag Activating telephone exchange night switch - using central memory to store allocations of switchboard positions to subscribers
DE4412562A1 (en) * 1994-04-12 1995-10-19 Siemens Ag Communication system with configured groups of ISDN B channels

Also Published As

Publication number Publication date
GB1408713A (en) 1975-10-01
DE2304925B2 (en) 1975-07-10
IT978737B (en) 1974-09-20
JPS4893206A (en) 1973-12-03
DE2304925A1 (en) 1973-08-16
DE2304925C3 (en) 1980-09-11
BE795147A (en) 1973-05-29
FR2171676A5 (en) 1973-09-21

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