import type { Request, Response } from 'express';
/**
 * Webhook handler for when an advanced outbound call is answered
 * This endpoint receives the Twilio webhook and returns TwiML to control the call
 * Based on the working Fastify implementation
 */
export declare const outboundCallAnsweredController: (req: Request, res: Response) => Promise<void>;
/**
 * Webhook handler for step completion (keyboard/audio steps)
 * This is no longer needed with the redirect-based approach, but kept for compatibility
 */
export declare const outboundCallStepCompleteController: (req: Request, res: Response) => Promise<void>;
/**
 * Webhook handler for realtime conversation
 * This is no longer needed as realtime is handled via media stream
 */
export declare const outboundCallRealtimeController: (req: Request, res: Response) => Promise<void>;
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