IT978737B - Sistema telefonico perfezionato - Google Patents

Sistema telefonico perfezionato

Info

Publication number
IT978737B
IT978737B IT1994473A IT1994473A IT978737B IT 978737 B IT978737 B IT 978737B IT 1994473 A IT1994473 A IT 1994473A IT 1994473 A IT1994473 A IT 1994473A IT 978737 B IT978737 B IT 978737B
Authority
IT
Italy
Prior art keywords
perfected
telephone system
telephone
perfected telephone
Prior art date
Application number
IT1994473A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT978737B publication Critical patent/IT978737B/it

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)
IT1994473A 1972-02-08 1973-02-02 Sistema telefonico perfezionato IT978737B (it)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT978737B true IT978737B (it) 1974-09-20

Family

ID=9093461

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1994473A IT978737B (it) 1972-02-08 1973-02-02 Sistema telefonico perfezionato

Country Status (7)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830281C3 (de) * 1978-07-10 1981-06-25 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Fernmeldevermittlungsanlagen, insbesondere Fernsprechvermittlungsanlagen, mit Einrichtungen zur Berechtigungsbewertung
DE2830282C3 (de) * 1978-07-10 1981-10-15 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Fernmeldevermittlungsanlagen, insbesondere Fernsprechvermittlungsanlagen mit Einrichtungen zur Berechtigungsbewertung
DE2929514C2 (de) * 1979-07-20 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Verfahren zum Abfragen von Teilnehmerberechtigungen in einer zentral gesteuerten Fernsprechnebenstellenanlage
DE3432144A1 (de) * 1984-08-31 1986-03-13 Siemens AG, 1000 Berlin und 8000 München Verfahren fuer eine mit einem betriebstechnischen terminal ausgeruestete waehlnebenstellenanlage
DE3433660A1 (de) * 1984-09-13 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Verfahren fuer eine waehlnebenstellenanlage, die mit einem betriebstechnischen terminal ausgeruestet ist
DE3725061A1 (de) * 1987-07-29 1989-02-09 Telefonbau & Normalzeit Gmbh Anordnung zur ueberwachung mehrstelliger rufmummern fuer fernmelde-, insbesondere fernsprechvermittlungsanlagen
DE3932689A1 (de) * 1989-09-29 1991-04-11 Siemens Ag Verfahren zur aktivierung einer nachtschaltung in einer nebenstellenkommunikationsanlage
DE4412562A1 (de) * 1994-04-12 1995-10-19 Siemens Ag Kommunikationssystem mit konfigurierten Gruppen von ISDN-B-Kanälen

Also Published As

Publication number Publication date
DE2304925C3 (de) 1980-09-11
JPS4893206A (it) 1973-12-03
DE2304925A1 (de) 1973-08-16
CA992184A (en) 1976-06-29
BE795147A (fr) 1973-05-29
GB1408713A (en) 1975-10-01
DE2304925B2 (de) 1975-07-10
FR2171676A5 (it) 1973-09-21

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