FR2391622A1 - Systeme de signalisation multifrequence - Google Patents
Systeme de signalisation multifrequenceInfo
- Publication number
- FR2391622A1 FR2391622A1 FR7715224A FR7715224A FR2391622A1 FR 2391622 A1 FR2391622 A1 FR 2391622A1 FR 7715224 A FR7715224 A FR 7715224A FR 7715224 A FR7715224 A FR 7715224A FR 2391622 A1 FR2391622 A1 FR 2391622A1
- Authority
- FR
- France
- Prior art keywords
- master unit
- logic circuit
- line coupling
- signalling system
- controls function
- 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.)
- Withdrawn
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
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
- H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
- H04Q3/54508—Configuration, initialisation
- H04Q3/54533—Configuration data, translation, passwords, databases
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Le système de signalisation multifréquence est constitué en unité logique centrale de traitement autour d'un microprocesseur banal de façon à piloter un émetteur-récepteur et un coupleur de lignes de type totalement électronique. Il en résulte une indépendance du système à l'égard du code utilisé, une substantielle réduction de dimensionnement et une grande souplesse d'exploitation. Applicable en transmission téléphonique et radiotéléphonique.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7715224A FR2391622A1 (fr) | 1977-05-18 | 1977-05-18 | Systeme de signalisation multifrequence |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7715224A FR2391622A1 (fr) | 1977-05-18 | 1977-05-18 | Systeme de signalisation multifrequence |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2391622A1 true FR2391622A1 (fr) | 1978-12-15 |
Family
ID=9190985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7715224A Withdrawn FR2391622A1 (fr) | 1977-05-18 | 1977-05-18 | Systeme de signalisation multifrequence |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2391622A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453575A1 (fr) * | 1979-04-06 | 1980-10-31 | Cit Alcatel | Equipement de signalisation multifrequence a commande centralisee |
FR2554658A1 (fr) * | 1983-11-09 | 1985-05-10 | Pinet Andre | Procede de detection de signaux alternatifs transmis sur les lignes telephoniques |
-
1977
- 1977-05-18 FR FR7715224A patent/FR2391622A1/fr not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453575A1 (fr) * | 1979-04-06 | 1980-10-31 | Cit Alcatel | Equipement de signalisation multifrequence a commande centralisee |
FR2554658A1 (fr) * | 1983-11-09 | 1985-05-10 | Pinet Andre | Procede de detection de signaux alternatifs transmis sur les lignes telephoniques |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |