WhatsApp is one of the most popular and widely used messaging applications on the market today. With over 1.5 billion monthly active users, it is no surprise that WhatsApp has become a top choice for communication among individuals and businesses alike.
One of the key features that makes WhatsApp so successful is its ability to use Voice over Internet Protocol (VoIP) protocol to facilitate voice and video calls.
VoIP is a technology which enables real-time communication by sending voice, video, and other data over the internet rather than through traditional phone networks. This allows users to make calls from any location with a reliable internet connection, without having to pay for traditional phone services. VoIP also provides higher quality audio and video than regular phone services, as well as additional features such as call forwarding, caller ID, and conference calling.
WhatsApp uses the Session Initiation Protocol (SIP) for its VoIP services. SIP is an open standard protocol used by many VoIP providers to set up, manage and terminate calls between two or more endpoints.
The protocol works by allowing clients (in this case WhatsApp users) to send messages called SIP requests in order to initiate or modify a call session with another user or group of users.
SIP works by establishing a virtual telephone connection between two or more parties over IP networks like the Internet. It allows for data transfer such as audio and video streams between users in real time, providing a seamless experience for both parties involved in the call.
WhatsApp also uses other protocols such as Real-time Transport Protocol (RTP) and Secure Real-time Transport Protocol (SRTP).
RTP is used to transport media streams such as audio and video while SRTP provides encryption for secure data transfer between endpoints.
Conclusion:
In conclusion, WhatsApp uses the Session Initiation Protocol (SIP) to facilitate VoIP calls along with other protocols such as Real-time Transport Protocol (RTP) and Secure Real-time Transport Protocol (SRTP). This combination of protocols ensures high-quality voice and video calls with added security features for users.