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| "THE PHANTOPHONE"
Click here for history of the Phonopore Click here for more information on Phonopore Telephones
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Last revised: August 29, 2022FM2 |
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| "THE PHANTOPHONE"
Click here for history of the Phonopore Click here for more information on Phonopore Telephones
|
|||||||
Last revised: August 29, 2022FM2 |
ATM TELEPHONE
T.707
For
simultaneous telephony on telegraph and block signalling circuits.