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Human communication / Electromagnetism / Technology / Broadcast engineering / Dual-tone multi-frequency signaling / Electrical engineering / Push-button telephone / Telephony / Signaling / Multi-frequency signaling / Electric motor / Telephone


ISSN No: International Journal & Magazine of Engineering, Technology, Management and Research A Peer Reviewed Open Access International Journal
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Document Date: 2015-06-09 08:08:09

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File Size: 787,58 KB

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