CA521240A - Toll switching systems - Google Patents

Toll switching systems

Info

Publication number
CA521240A
CA521240A CA521240A CA521240DA CA521240A CA 521240 A CA521240 A CA 521240A CA 521240 A CA521240 A CA 521240A CA 521240D A CA521240D A CA 521240DA CA 521240 A CA521240 A CA 521240A
Authority
CA
Canada
Prior art keywords
switching systems
toll switching
toll
systems
switching
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
CA521240A
Other languages
French (fr)
Inventor
E. Ostline John
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 CA521240A publication Critical patent/CA521240A/en
Expired legal-status Critical Current

Links

CA521240A Toll switching systems Expired CA521240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA521240T

Publications (1)

Publication Number Publication Date
CA521240A true CA521240A (en) 1956-01-31

Family

ID=35674461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA521240A Expired CA521240A (en) Toll switching systems

Country Status (1)

Country Link
CA (1) CA521240A (en)

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