3 years, 3 months ago
In Band Signal Frequency Signalling : FIND ME THIS ARTICLE
I need a copy of In Band Signal Frequency Signalling from the Bell Labs Technical journal, the article was published in '55, i need a copy.
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I found a pdf copy here:
http://historyofphonephreaking.org/docs.php
In-Band Single-Frequency Signaling by Weaver and Newell, November 1954
You'll probably also want:
Signaling Systems for Control of Telephone Switching by Breen and Dahlbom, November 1960
It lays the long distance system wide open.
http://historyofphonephreaking.org/docs.php
In-Band Single-Frequency Signaling by Weaver and Newell, November 1954
You'll probably also want:
Signaling Systems for Control of Telephone Switching by Breen and Dahlbom, November 1960
It lays the long distance system wide open.
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
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