Ilyeneket találtam benne:
const MIN_LENGTH_FOR_NSN = 2;
// The ITU says the maximum length should be 15, but we have found longer numbers in Germany.
const MAX_LENGTH_FOR_NSN = 17;
// We don't allow input strings for parsing to be longer than 250 chars. This prevents malicious
// input from overflowing the regular-expression engine.
const MAX_INPUT_STRING_LENGTH = 250;
// The maximum length of the country calling code.
const MAX_LENGTH_COUNTRY_CODE = 3;Szerk.: A Wikipédiában ezt találtam:
"The International Telecommunication Union (ITU) has established a comprehensive numbering plan, designated E.164, for uniform interoperability of the networks of its member state or regional administrations. It is an open numbering plan, however, imposing a maximum length of 15 digits to telephone numbers."