IT1148885B - MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT - Google Patents

MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT

Info

Publication number
IT1148885B
IT1148885B IT23332/80A IT2333280A IT1148885B IT 1148885 B IT1148885 B IT 1148885B IT 23332/80 A IT23332/80 A IT 23332/80A IT 2333280 A IT2333280 A IT 2333280A IT 1148885 B IT1148885 B IT 1148885B
Authority
IT
Italy
Prior art keywords
transit
control unit
particular application
signaling control
type signaling
Prior art date
Application number
IT23332/80A
Other languages
Italian (it)
Other versions
IT8023332A0 (en
Inventor
Valerio Banfi
Manlio Springolo
Original Assignee
Sits Soc It Telecom Siemens
Italtel Spa
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 Sits Soc It Telecom Siemens, Italtel Spa filed Critical Sits Soc It Telecom Siemens
Priority to IT23332/80A priority Critical patent/IT1148885B/en
Publication of IT8023332A0 publication Critical patent/IT8023332A0/en
Priority to FR8112465A priority patent/FR2486748A1/en
Priority to BR8104310A priority patent/BR8104310A/en
Priority to DE3126981A priority patent/DE3126981A1/en
Priority to GB8121262A priority patent/GB2080074A/en
Application granted granted Critical
Publication of IT1148885B publication Critical patent/IT1148885B/en

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
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
    • 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)
  • Exchange Systems With Centralized Control (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
IT23332/80A 1980-07-09 1980-07-09 MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT IT1148885B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT23332/80A IT1148885B (en) 1980-07-09 1980-07-09 MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT
FR8112465A FR2486748A1 (en) 1980-07-09 1981-06-25 MULTI-FREQUENCY TYPE SIGNALING CONTROL UNIT, ESPECIALLY APPLYING TO DIGITAL-TYPE TRANSIT TELEPHONE CENTERS
BR8104310A BR8104310A (en) 1980-07-09 1981-07-07 MULTIPLE FREQUENCY SIGNALING CONTROL UNIT
DE3126981A DE3126981A1 (en) 1980-07-09 1981-07-08 "SIGNALING CONTROL UNIT FOR A PCM TELECOMMUNICATION SWITCH CENTER"
GB8121262A GB2080074A (en) 1980-07-09 1981-07-09 Improvements in or Relating to Multifrequency Signalling Control Units for Use in Transit Telephone Exchanges of Digital Type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23332/80A IT1148885B (en) 1980-07-09 1980-07-09 MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT

Publications (2)

Publication Number Publication Date
IT8023332A0 IT8023332A0 (en) 1980-07-09
IT1148885B true IT1148885B (en) 1986-12-03

Family

ID=11206151

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23332/80A IT1148885B (en) 1980-07-09 1980-07-09 MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT

Country Status (5)

Country Link
BR (1) BR8104310A (en)
DE (1) DE3126981A1 (en)
FR (1) FR2486748A1 (en)
GB (1) GB2080074A (en)
IT (1) IT1148885B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672968A5 (en) * 1984-11-30 1990-01-15 Autophon Ascom Ag
RU2143790C1 (en) * 1998-12-30 1999-12-27 Поволжская государственная академия телекоммуникаций и информатики Adaptive digital group receiver of control and interaction signals with nonlinear pulse-code modulation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT284917B (en) * 1968-07-22 1970-10-12 Siemens Ag Circuit arrangement for the reception of different characters transmitted in uninterrupted sequence in telecommunications, in particular telephone systems
DE2045144A1 (en) * 1970-09-11 1972-03-16 Siemens Ag Frequency selective signal receiver
DE2157559C3 (en) * 1971-11-19 1978-05-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Multi-frequency code signal receivers for telecommunications, in particular telephone systems
FR2296221A1 (en) * 1974-12-27 1976-07-23 Ibm France SIGNAL PROCESSING SYSTEM
IT1072242B (en) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom PROCEDURE AND DEVICE FOR THE RECOGNITION OF TELEPHONE SIGNALS IN MULTIFREQUENCY CODE CONVERTED IN NUMERICAL FORM
US4133979A (en) * 1977-01-26 1979-01-09 Trw, Inc. Multifrequency sender/receiver in a multi-time slot digital data stream

Also Published As

Publication number Publication date
GB2080074A (en) 1982-01-27
IT8023332A0 (en) 1980-07-09
BR8104310A (en) 1982-03-23
FR2486748A1 (en) 1982-01-15
DE3126981A1 (en) 1982-03-11

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