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Fax modem - Wikipedia
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VTOP External V.92 56K Dial Up USB Fax Modem with RJ11 Cable - Analog Modem Fax to Receive/Send Fax via Fax Machine Compatible for Windows xp / 7 / 8& Mac OS
Connecting a Telephone or Answering Machine
electrical topics: Block Diagram of Fax-Machine
Fax Machines & Modems Sound Effects - Album by Sound Ideas - Apple Music