Voice over IP (VoIP) software enables telephone-like voice conversations across IP based networks. A VoIP phone service is often cheaper than a traditional Public Switched Telephone Network (PSTN) phone service and removes geographic restrictions to telephone numbers.
Softphones are user based clients for making and receiving voice and video communication over the IP network, usually permitting integration with USB and IP Phones instead of a computer's microphone and speakers (or headset). This article selects the best softphones available for Linux.
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