CA505804A - Systeme de signalisation telephonique - Google Patents

Systeme de signalisation telephonique

Info

Publication number
CA505804A
CA505804A CA505804A CA505804DA CA505804A CA 505804 A CA505804 A CA 505804A CA 505804 A CA505804 A CA 505804A CA 505804D A CA505804D A CA 505804DA CA 505804 A CA505804 A CA 505804A
Authority
CA
Canada
Prior art keywords
signalling system
telephone signalling
telephone
signalling
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.)
Expired
Application number
CA505804A
Other languages
English (en)
Inventor
H. Ransom David
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA505804A publication Critical patent/CA505804A/fr
Expired legal-status Critical Current

Links

CA505804A Systeme de signalisation telephonique Expired CA505804A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA505804T

Publications (1)

Publication Number Publication Date
CA505804A true CA505804A (fr) 1954-09-14

Family

ID=35651727

Family Applications (1)

Application Number Title Priority Date Filing Date
CA505804A Expired CA505804A (fr) Systeme de signalisation telephonique

Country Status (1)

Country Link
CA (1) CA505804A (fr)

Similar Documents

Publication Publication Date Title
CA505804A (fr) Systeme de signalisation telephonique
CA505876A (fr) Systeme de signalisation telephonique
CA502785A (fr) Systeme de signalisation d'abonnes
CA502786A (fr) Systeme de signalisation d'abonnes
CA504867A (fr) Systeme selectif d'appel
CA504718A (fr) Systemes de signalisation d'abonne
CA504719A (fr) Systemes de signalisation d'abonne
CA502773A (fr) Systeme de signalisation
CA503175A (fr) Systeme de signalisation
CA506675A (fr) Systeme de signalisation
CA501908A (fr) Systeme de recepteur telephonique
CA504467A (fr) Signalisation dans systemes telephoniques
AU213016B2 (en) Signalling in telephone systems
CA507871A (fr) Systeme de telecommunication
CA499356A (fr) Systemes telephoniques
CA501321A (fr) Systemes telephoniques
CA502236A (fr) Systemes telephoniques
CA502239A (fr) Systemes telephoniques
CA507617A (fr) Systemes telephoniques
CA502238A (fr) Systemes telephoniques
CA506411A (fr) Systemes telephoniques
CA499772A (fr) Systemes de signalisation
CA507200A (fr) Systemes de telecommunication
AU89054A (en) Signalling in telephone systems
CA498169A (fr) Systeme de signalisation de telephone