PROHIBITION AGAINST DISPARAGEMENT. 10.1. Former Employee agrees that for a period of two years following the Effective Date any communication, whether oral or written, occurring on or off the premises of Tekelec, made by him or on his behalf to any person or entity (including, without limitation, any Tekelec employee, customer, vendor, supplier, any competitor, any media entity and any person associated with any media) which in any way relates to Tekelec (or any of its subsidiaries) or to Tekelec’s or any of its subsidiaries’ directors, officers, management or employees: (a) will be truthful; and (b) will not, directly or indirectly, criticize, disparage, or in any manner undermine the reputation or business practices of Tekelec or its directors, officers, management or employees.