IT1149990B - Dispositivo per la trasmissione di intervalli di formazione del numero in impianti telefonici - Google Patents

Dispositivo per la trasmissione di intervalli di formazione del numero in impianti telefonici

Info

Publication number
IT1149990B
IT1149990B IT23149/80A IT2314980A IT1149990B IT 1149990 B IT1149990 B IT 1149990B IT 23149/80 A IT23149/80 A IT 23149/80A IT 2314980 A IT2314980 A IT 2314980A IT 1149990 B IT1149990 B IT 1149990B
Authority
IT
Italy
Prior art keywords
transmission
telephone systems
formation intervals
number formation
intervals
Prior art date
Application number
IT23149/80A
Other languages
English (en)
Other versions
IT8023149A1 (it
IT8023149A0 (it
Inventor
Paul Richard Berkowitz
Thomas Michael Quinn
David Carlaw Trimble
Tse Lin Wang
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of IT8023149A0 publication Critical patent/IT8023149A0/it
Publication of IT8023149A1 publication Critical patent/IT8023149A1/it
Application granted granted Critical
Publication of IT1149990B publication Critical patent/IT1149990B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Facsimile Transmission Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
IT23149/80A 1979-07-02 1980-06-30 Dispositivo per la trasmissione di intervalli di formazione del numero in impianti telefonici IT1149990B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/053,780 US4311878A (en) 1979-07-02 1979-07-02 Dialing interval transmission gating arrangement

Publications (3)

Publication Number Publication Date
IT8023149A0 IT8023149A0 (it) 1980-06-30
IT8023149A1 IT8023149A1 (it) 1981-12-30
IT1149990B true IT1149990B (it) 1986-12-10

Family

ID=21986484

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23149/80A IT1149990B (it) 1979-07-02 1980-06-30 Dispositivo per la trasmissione di intervalli di formazione del numero in impianti telefonici

Country Status (9)

Country Link
US (1) US4311878A (it)
EP (1) EP0031369B1 (it)
JP (1) JPS56500792A (it)
BE (1) BE884105A (it)
CA (1) CA1147074A (it)
DE (1) DE3070150D1 (it)
ES (1) ES8103529A1 (it)
IT (1) IT1149990B (it)
WO (1) WO1981000183A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010569A (en) * 1988-08-03 1991-04-23 Matsushita Electric Industrial Co., Ltd. Telephone-call distributor
US5550813A (en) * 1994-08-31 1996-08-27 Lucent Technologies Inc. Cellular base station transmit-receive system
US5729112A (en) * 1996-07-26 1998-03-17 Dana Corporation Phase current sensing in a bifilar-wound switched reluctance motor drive topology

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350509A (en) * 1964-12-10 1967-10-31 Bell Telephone Labor Inc Time division tone signaling system
US3484558A (en) * 1966-12-30 1969-12-16 Bell Telephone Labor Inc Pulse corrector circuit for single frequency signaling system
US3562439A (en) * 1968-06-24 1971-02-09 Electronic Communications Telephone inband signalling system
US3821484A (en) * 1971-03-15 1974-06-28 North Electric Co Time sharing of a supervisory receiver unit
US3818144A (en) * 1972-04-12 1974-06-18 Stromberg Carlson Corp Multifrequency to dial pulse signal converter
US3835259A (en) * 1973-03-22 1974-09-10 Bell Telephone Labor Inc Time division conference hybrid circuit
US3959598A (en) * 1974-04-15 1976-05-25 Tel-Tone Corporation Identification forwarding circuit for use with tone-to-pulse converters
US3983332A (en) * 1974-06-03 1976-09-28 International Business Machines Corporation Conference call circuitry for TDM signal exchange
US3991279A (en) * 1975-05-23 1976-11-09 Bell Telephone Laboratories, Incorporated Monobus interface circuit
US4007339A (en) * 1975-11-28 1977-02-08 Bell Telephone Laboratories, Incorporated Arrangement serving operator assistance calls requiring routing back to originating offices
US4113989A (en) * 1977-03-01 1978-09-12 Siemens Aktiengesellschaft Electronic telephone system featuring switching networks having thyristors for single-wire switching
US4150259A (en) * 1977-10-31 1979-04-17 Bell Telephone Laboratories, Incorporated Communication system conferencing arrangement
FR2419624A1 (fr) * 1978-03-08 1979-10-05 Roche Bernard Poste telephonique a clavier a commutation automatique des codes de numerotation a impulsions et a multifrequence

Also Published As

Publication number Publication date
ES492948A0 (es) 1981-02-16
WO1981000183A1 (en) 1981-01-22
EP0031369B1 (en) 1985-02-13
IT8023149A1 (it) 1981-12-30
US4311878A (en) 1982-01-19
EP0031369A4 (en) 1981-10-13
EP0031369A1 (en) 1981-07-08
CA1147074A (en) 1983-05-24
IT8023149A0 (it) 1980-06-30
JPS56500792A (it) 1981-06-11
ES8103529A1 (es) 1981-02-16
BE884105A (fr) 1980-11-03
DE3070150D1 (en) 1985-03-28

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970624