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AU157448B2 - Improvements in or relating to voice frequency-signalling system - Google Patents
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AU157448B2 - Improvements in or relating to voice frequency-signalling system - Google Patents

Improvements in or relating to voice frequency-signalling system

Info

Publication number
AU157448B2
AU157448B2 AU10673/52A AU1067352A AU157448B2 AU 157448 B2 AU157448 B2 AU 157448B2 AU 10673/52 A AU10673/52 A AU 10673/52A AU 1067352 A AU1067352 A AU 1067352A AU 157448 B2 AU157448 B2 AU 157448B2
Authority
AU
Australia
Prior art keywords
relating
voice frequency
signalling system
signalling
voice
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
AU10673/52A
Other versions
AU1067352A (en
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Filing date
Publication date
Application filed by Standard Telephone and Cables Pty Ltd filed Critical Standard Telephone and Cables Pty Ltd
Application granted granted Critical
Publication of AU1067352A publication Critical patent/AU1067352A/en
Publication of AU157448B2 publication Critical patent/AU157448B2/en
Expired legal-status Critical Current

Links

AU10673/52A 1952-06-17 Improvements in or relating to voice frequency-signalling system Expired AU157448B2 (en)

Publications (2)

Publication Number Publication Date
AU1067352A AU1067352A (en) 1952-08-21
AU157448B2 true AU157448B2 (en) 1952-08-21

Family

ID=

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