What is sip calling?

SIP calling, also known as Session Initiation Protocol calling, is a communication protocol used for initiating, maintaining, and terminating real-time sessions such as voice and video calls over the internet. SIP is widely used for Voice over Internet Protocol (VoIP) services, enabling users to make calls using their internet connection rather than traditional telephone networks.

SIP calling allows for seamless communication across different devices and networks, making it possible to connect with individuals worldwide through voice and video calls. It supports a wide range of communication features, such as call forwarding, call waiting, conference calling, and caller ID.

To make a SIP call, both parties must have devices or applications that support SIP protocol. They exchange information through SIP messages, including session descriptions, invitations, and responses, to establish and manage the call. SIP also supports the integration of additional services, such as instant messaging and presence management, enhancing the overall communication experience.

Overall, SIP calling offers a cost-effective, flexible, and scalable solution for voice communication, making it a popular choice for businesses and individuals looking for reliable and efficient communication services.