import VoiceStep, { CallStartEvent, TODO } from './voice';
interface INPUT {
    callId?: string;
    sessionTimeout?: number | string;
    otherCallRef?: string;
    otherCallRefThread?: string;
    asr: TODO;
    tts: TODO;
    from: string;
    endUserNumber: string;
    sipHost?: string;
    sipUser?: string;
    sipPassword?: string;
    timeout?: number | string;
    headers?: Array<{
        name: string;
        value: string;
    }>;
    enableSpoofCallerId?: boolean;
    spoofCallerId?: string;
    isAMD?: boolean;
}
export default class InitiateCall extends VoiceStep<INPUT, TODO, CallStartEvent> {
    get conversation(): string | import("@onereach/flow-sdk/types").IMergeField;
    runStep(): Promise<void>;
    onAwake(): Promise<void>;
    waitForCall(): Promise<void>;
}
export {};