CA2171076A1 - Methode pour empecher les fraudes dans les systemes telephoniques a signalisation intrabande et module de liaison utilisant cette methode
- Google Patents
Methode pour empecher les fraudes dans les systemes telephoniques a signalisation intrabande et module de liaison utilisant cette methode
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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Publication date
Application filed by Alcatel NVfiledCriticalAlcatel NV
Publication of CA2171076A1publicationCriticalpatent/CA2171076A1/fr
CA 21710761995-03-271996-03-05Methode pour empecher les fraudes dans les systemes telephoniques a signalisation intrabande et module de liaison utilisant cette methode
AbandonedCA2171076A1
(fr)
Systeme et procede pour transporter efficacement des signaux sonores multifrequences a double tonalite/frequences multiples (dtmf/mf) lors d'une connexion telephonique dans un systeme telephonique base sur reseau