Last december, Klausner Technologies has filed a suit against Apple and AT&T for a violation of one of Klausner's patents in the Visual Voicemail service.
But now an agreement has been reached among the parties involved: Apple has decided to buy a license for Klausner's patent. As usual in such cases, the price for that license was not mentioned.
Even more, Apple has also allowed them to sell the rights for that functionality to other companies, but only if Apple does not pay more to get the exclusive rights.
[translation by xavier]