/**
 * Represents a SIP (Session Initiation Protocol) endpoint, which can be used as a call destination.
 */
type SIPEndpoint = {
    /**
     * Specifies the type of endpoint, which is 'sip' for SIP URIs.
     */
    type: 'sip';
    /**
     * The SIP URI associated with the endpoint.
     */
    uri: string;
    /**
     * An optional array of headers as key-value pairs. These headers can be included in the SIP request.
     */
    headers?: Record<string, unknown>;
    /**
     * Standard SIP INVITE headers. Unlike the headers property, these are not
     * prepended with X-.
     */
    standardHeaders?: {
        /**
         * Transmit user-to-user information if supported by the CC / PBX vendor,
         * as per RFC 7433.
         *
         * @link https://tools.ietf.org/html/rfc7433
         */
        userToUser?: string;
        /**
         * Allows using the pure header that is expected in the API call.
         */
        'User-to-User'?: string;
    };
};

export type { SIPEndpoint };