VoIP

Voice over Internet Protocol (VoIP) is a technology that converts voice into digital data packets and transmits them over IP networks — typically the internet — rather than traditional circuit-switched telephone networks (PSTN). VoIP enables voice calls, video calls, and multimedia sessions from any internet-connected device.

A VoIP call begins with SIP signaling to establish the session. Voice audio is captured, digitized by a codec, packetized, and sent via RTP to the remote party. At the receiving end, packets are reassembled and converted back to audio.

VoIP dramatically reduces call costs (especially international), enables advanced features like video and messaging, supports mobility through softphones, and scales easily. Service providers use platforms like Acrobits Cloud Softphone to deliver branded VoIP solutions to their subscribers.