UNITE DE CONTROLE DE LA SIGNALISATION DE TYPE MULTIFREQUENCE, S'APPLIQUANT PARTICULIEREMENT AUX CENTRAUX TELEPHONIQUES DE TRANSIT DE TYPE NUMERIQUE

• Main Author: MANLIO SPRINGOLO ET VALERIO BANFI
• Format: Patent
• Language: French
• Published: 15.01.1982
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING

LE CENTRAL NUMERIQUE COMPREND UNE UNITE DE COMMANDE CENTRALE CC APTE A COMMANDER LA COMMUTATION DES CODES QUI PARVIENNENT A UN RESEAU DE CONNEXION RC. L'UNITE DE CONTROLE DE LA SIGNALISATION DE TYPE MULTIFREQUENCE UCS COMPREND: UN PREMIER ET UN DEUXIEME DISCRIMINATEUR DE FREQUENCE DF DONT CHACUN RECOIT DU RESEAU DE CONNEXION DES CRITERES TELEPHONIQUES EN CODE MULTIFREQUENCE RELATIFS A 32 COMMUNICATIONS, APTES A RELEVER LE COUPLE DE FREQUENCES UTILISEES POUR LE CODAGE DE CHAQUE CRITERE TELEPHONIQUE; UN PREMIER ET UN DEUXIEME EMETTEUR IV DONT CHACUN EST APTE A CONVERTIR 32 CODES EXPRIMANT DES CRITERES TELEPHONIQUES DANS AUTANT DE CODES EXPRIMANT LA SOMME DU COUPLE DE FREQUENCES CARACTERISTIQUES DE CHAQUE CRITERE TELEPHONIQUE DESTINE A ETRE TRANSMIS AU RESEAU DE CONNEXION RC; UN DISCRIMINATEUR DE NIVEAUX DL APTE A RELEVER LA "VALIDITE" DE CHACUN DES COUPLES DE FREQUENCES QUI CORRESPOND A LA SORTIE DES DISCRIMINATEURS DE FREQUENCES DF; UN ORDINATEUR EL APTE A ENVOYER A LA COMMANDE CENTRALE CC LESCRITERES TELEPHONIQUES RELEVES PAR LE DISCRIMINATEUR DE NIVEAUX DL ET APTE EN OUTRE A TRANSMETTRE AUXDITS EMETTEURS IV LES CRITERES TELEPHONIQUES A TRANSMETTRE A TRAVERS LE RESEAU DE CONNEXION RC. A multifrequency signalling control unit UCSm comprises first and second frequency discriminators DF, each of which receives from the exchange connection network multifrequency code telephone control signals relating to 32 connections and detects the pair of frequencies utilized for each signal. First and second emitters IV each carry out conversion from 32 codes relating to telephone control signals into as many codes relating to the sum of the pair of characteristic frequencies of each telephone control signal which can be sent to the connection network RC. A level discriminator DL detects the "validity" of each pair of frequencies available at the output of the frequency discriminators DF, a processor EL sends the telephone control signals detected by the level discriminator DL to the central control unit CC and sends the telephone control signals to be transmitted by way of the connection network RC to the emitters IV.