CA518928A - Systemes de commutation d'appel interurbain - Google Patents

Systemes de commutation d'appel interurbain

Info

Publication number
CA518928A
CA518928A CA518928A CA518928DA CA518928A CA 518928 A CA518928 A CA 518928A CA 518928 A CA518928 A CA 518928A CA 518928D A CA518928D A CA 518928DA CA 518928 A CA518928 A CA 518928A
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
CA518928A
Other languages
English (en)
Inventor
W. Balzer Harvey
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 CA518928A publication Critical patent/CA518928A/fr
Expired legal-status Critical Current

Links

CA518928A Systemes de commutation d'appel interurbain Expired CA518928A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA518928T

Publications (1)

Publication Number Publication Date
CA518928A true CA518928A (fr) 1955-11-29

Family

ID=35672131

Family Applications (1)

Application Number Title Priority Date Filing Date
CA518928A Expired CA518928A (fr) Systemes de commutation d'appel interurbain

Country Status (1)

Country Link
CA (1) CA518928A (fr)

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