import { IAPIBaseUrl, IApiEnv } from '../types/Params';
export declare class ApiExternal {
    private readonly _uuid;
    private readonly _apiKey;
    private readonly _callToken;
    private readonly _apiEnv;
    private readonly _baseApiUrl;
    private _sessionKey;
    constructor(apiEvn: IApiEnv, apiKey: string, callToken: string, baseApiUrl?: IAPIBaseUrl);
    authorize(): Promise<boolean>;
    hangupConversation(conversationId: string): Promise<void>;
}