import { ITelephonyFailPolicyOptions } from './types';
export type TTelephonyEscalationLevel = 'none' | 'warning' | 'critical';
export type TTelephonyFailPolicyDecision = {
    failCount: number;
    escalationLevel: TTelephonyEscalationLevel;
    hasEscalated: boolean;
    shouldRequestReconnect: boolean;
    nextRetryDelayMs: number;
};
declare class TelephonyFailPolicy {
    private failCount;
    private nextRetryAtMs;
    private escalationLevel;
    private readonly options;
    constructor(options?: Partial<ITelephonyFailPolicyOptions>);
    registerFailure(): TTelephonyFailPolicyDecision;
    reset(): void;
    private resolveEscalationLevel;
    private resolveBackoffDelayMs;
}
export default TelephonyFailPolicy;