Any notice required hereunder to be given by either Party shall be in writing and shall be delivered personally or sent by certified or registered mail, postage prepaid, or by private courier, with written verification of delivery, or by facsimile transmission to the other Party to the address or telephone number set forth below or to such other address or telephone number as either Party may designate from time to time according to this provision. A notice delivered personally shall be effective upon receipt. A notice sent by facsimile transmission shall be effective twenty four hours after the dispatch thereof A notice delivered by mail or by private courier shall be effective on the third day after the day of mailing.