CA1036733A - Circuit boucle de commande de poste pour systeme de commutation telephonique - Google Patents

Circuit boucle de commande de poste pour systeme de commutation telephonique

Info

Publication number
CA1036733A
CA1036733A CA291,881A CA291881A CA1036733A CA 1036733 A CA1036733 A CA 1036733A CA 291881 A CA291881 A CA 291881A CA 1036733 A CA1036733 A CA 1036733A
Authority
CA
Canada
Prior art keywords
ringing
line
circuit
relay
circuits
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
CA291,881A
Other languages
English (en)
Inventor
John F. O'neill
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority claimed from US521650A external-priority patent/US3916118A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA1036733A publication Critical patent/CA1036733A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
CA291,881A 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique Expired CA1036733A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US521650A US3916118A (en) 1974-11-07 1974-11-07 Station loop control arrangement for telephone switching system
CA238,198A CA1036730A (fr) 1974-11-07 1975-10-23 Montage pour commande de boucle de poste pour systeme de commutation telephonique

Publications (1)

Publication Number Publication Date
CA1036733A true CA1036733A (fr) 1978-08-15

Family

ID=25668119

Family Applications (3)

Application Number Title Priority Date Filing Date
CA291,879A Expired CA1036731A (fr) 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique
CA291,881A Expired CA1036733A (fr) 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique
CA291,880A Expired CA1036732A (fr) 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA291,879A Expired CA1036731A (fr) 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA291,880A Expired CA1036732A (fr) 1974-11-07 1977-11-28 Circuit boucle de commande de poste pour systeme de commutation telephonique

Country Status (1)

Country Link
CA (3) CA1036731A (fr)

Also Published As

Publication number Publication date
CA1036732A (fr) 1978-08-15
CA1036731A (fr) 1978-08-15

Similar Documents

Publication Publication Date Title
CA1039424A (fr) Circuit universel de reseau pbx pour service automatique ou a clavier
US3519757A (en) Electronic key telephone system
CA1065455A (fr) Appareil et systeme prive de commutation automatique
US6477248B1 (en) Multi-line station interface
US3737587A (en) Telephone switching system having call pickup service
CA1036730A (fr) Montage pour commande de boucle de poste pour systeme de commutation telephonique
US5600654A (en) Multiple call offering method for use with an analog station and an ISDN station that share a directory number
US3420961A (en) Time division key telephone system
US2975237A (en) Telephone conference circuit
US5317631A (en) Local switching system
USRE30220E (en) Station loop control arrangement for telephone switching system
US3557318A (en) Apartment house telephone system
CA1036733A (fr) Circuit boucle de commande de poste pour systeme de commutation telephonique
US3733442A (en) Hold circuit for multi-line key telephone system
US3441678A (en) Conference circuit with selective call splitting
JPS61225952A (ja) 電話機
US3378650A (en) Communication system signaling and testing equipment
JPH0338799B2 (fr)
EP0824298A2 (fr) Système téléphonique
US3544729A (en) Switching system arrangement for terminating a call to a line other than a called line
US4823377A (en) System for setting registration mode for key telephone set
US3231678A (en) Subscriber controlled conference circuit
US2862062A (en) Holding arrangement for universaltype line circuit
US3904831A (en) Tone control arrangement for electronic PABX
US3530254A (en) Executive conferencing system