CA870836A - Line circuit scanner for electronic telephone systems - Google Patents

Line circuit scanner for electronic telephone systems

Info

Publication number
CA870836A
CA870836A CA870836A CA870836DA CA870836A CA 870836 A CA870836 A CA 870836A CA 870836 A CA870836 A CA 870836A CA 870836D A CA870836D A CA 870836DA CA 870836 A CA870836 A CA 870836A
Authority
CA
Canada
Prior art keywords
line circuit
telephone systems
electronic telephone
circuit scanner
scanner
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
CA870836A
Inventor
A. Risky Frank
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.)
GTE Automatic Electric Laboratories Inc
Original Assignee
GTE Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA870836A publication Critical patent/CA870836A/en
Expired legal-status Critical Current

Links

CA870836A Line circuit scanner for electronic telephone systems Expired CA870836A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA870836T

Publications (1)

Publication Number Publication Date
CA870836A true CA870836A (en) 1971-05-11

Family

ID=36356870

Family Applications (1)

Application Number Title Priority Date Filing Date
CA870836A Expired CA870836A (en) Line circuit scanner for electronic telephone systems

Country Status (1)

Country Link
CA (1) CA870836A (en)

Similar Documents

Publication Publication Date Title
CA960389A (en) Control circuit for key telephone system
CA971660A (en) Terminal insert for electronic component
AU470637B2 (en) Terminal for flexible circuits
CA978628A (en) Electronic communication switching system
CA923644A (en) Line circuit for key telephone system
AU467813B2 (en) Line circuit fora key telephone system
CA963189A (en) Line circuit for telephone installation
CA949245A (en) Telephone subscriber line circuit
CA924425A (en) Hold circuit for multi-line key telephone system
CA944878A (en) Supervisory circuit arrangement for telephone subscriber lines
CA1000392A (en) Disconnect circuit for telephone systems
CA879364A (en) Toll telephone system having an electronic data processor
CA929290A (en) Line circuit for a key telephone system
CA870836A (en) Line circuit scanner for electronic telephone systems
CA949689A (en) Input circuit for an automatic telephone answering device
AU4958472A (en) Line synchronising circuit
CA780967A (en) Immediate ringing circuit for telephone systems
CA939091A (en) Long-line telephone circuit
CA938040A (en) Telephone subscriber line circuit
CA968051A (en) Electronic switching network connectable telephone system
CA885011A (en) Supervisory circuit for telephone lines
CA791228A (en) Telephone conference circuit
CA876374A (en) Electronic key telephone system
CA791231A (en) Telephone line circuit
CA791230A (en) Telephone line circuit