CA512084A - Multi-office toll switching telephone systems - Google Patents

Multi-office toll switching telephone systems

Info

Publication number
CA512084A
CA512084A CA512084A CA512084DA CA512084A CA 512084 A CA512084 A CA 512084A CA 512084 A CA512084 A CA 512084A CA 512084D A CA512084D A CA 512084DA CA 512084 A CA512084 A CA 512084A
Authority
CA
Canada
Prior art keywords
telephone systems
switching telephone
toll switching
office
office toll
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
CA512084A
Other languages
French (fr)
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA512084A publication Critical patent/CA512084A/en
Expired legal-status Critical Current

Links

CA512084A Multi-office toll switching telephone systems Expired CA512084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA512084T

Publications (1)

Publication Number Publication Date
CA512084A true CA512084A (en) 1955-04-19

Family

ID=35663156

Family Applications (1)

Application Number Title Priority Date Filing Date
CA512084A Expired CA512084A (en) Multi-office toll switching telephone systems

Country Status (1)

Country Link
CA (1) CA512084A (en)

Similar Documents

Publication Publication Date Title
US2868884A (en) Toll switching telephone system
CA512084A (en) Multi-office toll switching telephone systems
CA518928A (en) Toll switching systems
CA519764A (en) Toll switching system
CA507729A (en) Toll switching telephone systems
CA507730A (en) Toll switching telephone systems
CA512519A (en) Party-line telephone systems
CA506632A (en) Telecommunication switching systems
CA512309A (en) Telephone systems
CA510190A (en) Telephone systems
CA510665A (en) Telephone systems
CA511747A (en) Telephone systems
CA512083A (en) Telephone systems
CA512310A (en) Telephone systems
CA512311A (en) Telephone systems
CA512312A (en) Telephone systems
CA519014A (en) Telephone systems
CA514094A (en) Telephone systems employing non-numerical switches
CA509711A (en) Switching systems
CA496550A (en) Telephone switching system
CA521240A (en) Toll switching systems
AU211198B2 (en) Improvements in telecommunication systems
CA565967A (en) Toll switching telephone systems
CA514091A (en) Telephone switchboard
CA513821A (en) Electronic register for telephone switching systems