interface Config {
    credential: {
        host: string | null;
        token: string | null;
        userkey: string | null;
    };
    config?: {
        dom?: {
            localVideo: HTMLElement;
            remoteVideo: HTMLElement;
        };
    };
}
interface Callback {
    [key: string]: (e: any) => {};
}
export default class IonPhoner {
    private phone;
    private ws;
    private wsAct;
    private sk;
    private isConnected;
    private isRegistered;
    private isOnCall;
    private opt;
    private callback;
    constructor(params: Config);
    connect(): Promise<{
        status: boolean;
        result: string | null;
    }>;
    private wsSend;
    register(): void;
    unregister(): void;
    call(phone: string): void;
    dtmf(num: string): void;
    hangup(): void;
    answer(): void;
    hold(): void;
    unhold(): void;
    mute(): void;
    unmute(): void;
    private setSk;
    on(event: keyof Callback, handler: (e: any) => any): void;
}
export {};