CA840017A - Telephone exchange with interworking of switching units of different types - Google Patents

Telephone exchange with interworking of switching units of different types

Info

Publication number
CA840017A
CA840017A CA840017A CA840017DA CA840017A CA 840017 A CA840017 A CA 840017A CA 840017 A CA840017 A CA 840017A CA 840017D A CA840017D A CA 840017DA CA 840017 A CA840017 A CA 840017A
Authority
CA
Canada
Prior art keywords
interworking
different types
switching units
telephone exchange
telephone
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
CA840017A
Inventor
B. Sikorski Frank
S. Cochran Alfred
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA840017A publication Critical patent/CA840017A/en
Expired legal-status Critical Current

Links

CA840017A Telephone exchange with interworking of switching units of different types Expired CA840017A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA840017T

Publications (1)

Publication Number Publication Date
CA840017A true CA840017A (en) 1970-04-21

Family

ID=36324215

Family Applications (1)

Application Number Title Priority Date Filing Date
CA840017A Expired CA840017A (en) Telephone exchange with interworking of switching units of different types

Country Status (1)

Country Link
CA (1) CA840017A (en)

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