Description: SIP-OPTIONS is a method of the Session Initiation Protocol (SIP) used to query the capabilities of a SIP endpoint. This method allows a SIP client or server to obtain information about the features and functionalities supported by another endpoint, such as audio and video codecs, available SIP methods, and other relevant communication parameters. The query is made through a SIP message that includes the OPTIONS method, and the response may contain details about the capabilities of the queried device or service. This mechanism is essential for interoperability in communication networks, as it allows devices to negotiate and establish communication parameters before initiating a session. Additionally, SIP-OPTIONS is useful for network management, as it enables administrators to monitor and verify the availability of endpoints in the network. In summary, SIP-OPTIONS is a key tool in the communication ecosystem, facilitating interaction and compatibility between different devices and services.
