Category:Dual-tone multi-frequency signaling
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This category has only the following subcategory.
Media in category "Dual-tone multi-frequency signaling"
The following 16 files are in this category, out of 16 total.
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1&1 NetXXL powered by FRITZ! - CMD CM8870CSI on mainboard-1833.jpg 4,998 × 2,455; 8.01 MB
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66a3aDTMFpad.jpg 2,272 × 1,704; 1.61 MB
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Atari Portfolio HPC-004 - display part - board - Philips PCD3311T-4659.jpg 2,775 × 2,775; 5.17 MB
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De-Mehrfrequenzwahlverfahren.ogg 3.5 s; 33 KB
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De-Tonwahlverfahren.ogg 2.8 s; 25 KB
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DTMF Dialer Bottom.jpg 1,359 × 2,030; 626 KB
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DTMF Dialer Inside.jpg 3,074 × 2,602; 2.11 MB
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DTMF Dialer Top.jpg 1,606 × 2,586; 1.04 MB
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Dtmf Dialtone Synthesizer And Delay (138545005).jpeg 2,048 × 1,463; 574 KB
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DTMF keypad layout.png 400 × 400; 6 KB
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DTMF keypad layout.svg 400 × 400; 6 KB
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Dtmfspectrum.png 707 × 166; 39 KB
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Emmerich ISTEC 1003 - board - Mitel MT8870DS-5262.jpg 3,143 × 2,357; 4.91 MB
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MultiTone1.png 768 × 576; 8 KB
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Schematicsdtmf.JPG 669 × 495; 74 KB
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Siemens Set 311 P (2).jpg 4,288 × 3,216; 5.15 MB
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