SDP stands for Session Description Protocol. It is a communication protocol that is used for describing and negotiating multimedia sessions between two or more parties over an IP network. SDP is commonly used in applications such as Voice over IP (VoIP), video conferencing, and streaming media.
The primary purpose of SDP is to provide a detailed description of the multimedia sessions, including information such as the media type (audio, video, etc.), codecs and formats used, network addresses and ports, session timing, and other session-specific parameters. This information enables the participating parties to negotiate and establish a compatible session configuration.
SDP is based on a text-based format, using a set of simple and flexible fields to convey the session information. It is typically used in conjunction with other protocols such as SIP (Session Initiation Protocol) for session initiation and control.
The SDP format allows for extensibility and supports a wide range of media types and codecs, making it highly adaptable for various multimedia applications. It also provides a mechanism for session negotiation and modification, allowing for dynamic changes to the session parameters during the session establishment or runtime.
Overall, SDP plays a crucial role in facilitating the establishment and management of multimedia sessions, ensuring interoperability and seamless communication between different devices and networks.
