export declare class RingingStateType {
    static RESET: RingingStateType;
    static READY: RingingStateType;
    static PLAY_ISSUED: RingingStateType;
    static AWAIT_PLAY_RESPONSE: RingingStateType;
    static RESPONSE_RECEIVED: RingingStateType;
    static PENDING_PLAY: RingingStateType;
    static PENDING_DONE: RingingStateType;
    i: number;
    constructor(i: any);
}
export declare class RingingStateMachine {
    ringingState: RingingStateType;
    constructor();
}
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