CA1136785A - Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel - Google Patents

Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel

Info

Publication number
CA1136785A
CA1136785A CA000358744A CA358744A CA1136785A CA 1136785 A CA1136785 A CA 1136785A CA 000358744 A CA000358744 A CA 000358744A CA 358744 A CA358744 A CA 358744A CA 1136785 A CA1136785 A CA 1136785A
Authority
CA
Canada
Prior art keywords
signal
intercom
circuit
signals
hands free
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
CA000358744A
Other languages
English (en)
Inventor
Donald E. Clement
William D. Gibb
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000358744A priority Critical patent/CA1136785A/fr
Application granted granted Critical
Publication of CA1136785A publication Critical patent/CA1136785A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
CA000358744A 1980-08-21 1980-08-21 Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel Expired CA1136785A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000358744A CA1136785A (fr) 1980-08-21 1980-08-21 Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000358744A CA1136785A (fr) 1980-08-21 1980-08-21 Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel

Publications (1)

Publication Number Publication Date
CA1136785A true CA1136785A (fr) 1982-11-30

Family

ID=4117709

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000358744A Expired CA1136785A (fr) 1980-08-21 1980-08-21 Reseau d'intercommunication sans l'intervention des mains pour repondre a un appel

Country Status (1)

Country Link
CA (1) CA1136785A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry