export declare const VALID_SCS_VALUES: readonly [15, 30, 60, 120, 240, 480, 960];
export declare class InvalidScsException extends Error {
    constructor(message: string);
}
export declare class SCS {
    private readonly value;
    constructor(aValue: string | number | SCS | null);
    valueOf(): number;
    toString(): string;
    equals(other: SCS): boolean;
}