/**
 * Where app-linked numbers point (add-roomr 4.1). Asterisk is retired (cleanbreak CB-B3):
 * every app-linked number goes to the roomr peer that Go Roomr nodes register under with
 * least-sessions. `rebuild` is the only engine left; the type stays so repoint reports keep
 * their shape.
 */
export type VoiceEngine = "rebuild";
export type EngineRoutingConfig = {
    /** The roomr peer AOR (default sip:roomr@default). */
    roomrNodeAor?: string;
};
export declare const ROOMR_PEER_AOR = "sip:roomr@default";
/** The AOR of the retired Asterisk peer, for moving numbers created before the rebuild. */
export declare const LEGACY_ASTERISK_PEER_AOR = "sip:voice@default";
export type NumberRouting = {
    /** The engine for an app-linked number. */
    engineFor(target: {
        appRef: string;
        telUrl?: string;
    }): Promise<VoiceEngine>;
    /** The peer AOR (Number.aorLink) for an app-linked number. */
    aorFor(target: {
        appRef: string;
        telUrl?: string;
    }): Promise<string>;
    /** The peer AOR of an engine. */
    aorOf(engine: VoiceEngine): string;
};
export declare function createNumberRouting(config?: EngineRoutingConfig): NumberRouting;