A VoIP phone uses Voice over IP (Voice over Internet Protocol) technologies for placing and transmitting telephone calls over an IP network, such as the Internet, instead of the traditional public switched telephone network (PSTN). An adapter connects VoI
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  1. Cisco SPA122 VoIP telephone adapter
    Cisco SPA122 VoIP telephone adapter
    $61.41

  2. Cisco SPA112 2-Port Phone Adapter
    Cisco SPA112 2-Port Phone Adapter
    $50.51

  3. Cisco ATA190 VoIP telephone adapter
    Cisco ATA190 VoIP telephone adapter
    $201.54

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