CA879363A - Speech transfer equipment for making special service in telephone exchange system - Google Patents

Speech transfer equipment for making special service in telephone exchange system

Info

Publication number
CA879363A
CA879363A CA879363A CA879363DA CA879363A CA 879363 A CA879363 A CA 879363A CA 879363 A CA879363 A CA 879363A CA 879363D A CA879363D A CA 879363DA CA 879363 A CA879363 A CA 879363A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
transfer equipment
special service
making special
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
CA879363A
Inventor
Yamagami Teruhiro
Ariizumi Yoshio
Masuda Yutaka
Kimura Yutaka
Okita Yasushi
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Publication date
Application granted granted Critical
Publication of CA879363A publication Critical patent/CA879363A/en
Expired legal-status Critical Current

Links

CA879363A Speech transfer equipment for making special service in telephone exchange system Expired CA879363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA879363T

Publications (1)

Publication Number Publication Date
CA879363A true CA879363A (en) 1971-08-24

Family

ID=36365177

Family Applications (1)

Application Number Title Priority Date Filing Date
CA879363A Expired CA879363A (en) Speech transfer equipment for making special service in telephone exchange system

Country Status (1)

Country Link
CA (1) CA879363A (en)

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