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| View Original: | 66a3aDTMFpad.jpg (2272x1704) | |||
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| Keywords: 66a3aDTMFpad.jpg en Picture of Western Electric model 66A3A DTMF Touch Tone keypad showing additional feature buttons for the Autovon system marked 'FO' 'F' 'I' and 'P' own Lexlexlex 2002-05-22 I took this photo all rights released Telephone keypads Squares with 16 fields Western Electric push-button telephones Dual-tone multi-frequency signaling | ||||
