import { SmrtObject } from '@happyvertical/smrt-core';
import { VoiceGatewayTurnOptions, VoiceGatewayTurnStatus } from '../types.js';
/**
 * Durable reservation for a gateway turn. The natural key makes `turn_id`
 * replay checks concurrency-safe before transcript messages are written.
 */
export declare class VoiceGatewayTurn extends SmrtObject {
    tenantId: string;
    voiceSessionId: string;
    gatewaySessionId: string;
    gatewayTurnId: string;
    target: string;
    status: VoiceGatewayTurnStatus;
    completedAt: Date | null;
    failedAt: Date | null;
    constructor(options?: VoiceGatewayTurnOptions);
    complete(now?: Date): Promise<void>;
    fail(now?: Date): Promise<void>;
}
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