Exhibit 23.10 Consent of Independent Auditors We consent to the reference to our firm in the Registration Statement of Genesys S.A. (the "Company") on Form S-8 and to the incorporation by reference therein and in the related prospectus of our reports included or incorporated by reference in the Company's Registration Statement on Form F-4 dated February 12, 2001 (No. 333-55392) filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933. Frankfurt/Main, May 2, 2001 Ernst & Young Deutsche Allgemeine Treuhand AG Wirtschaftsprufungsgesellschaft /s/ P. FuB /s/ N. Devin P. FuB N. Devin Wirtschaftsprufer Wirtschaftsprufer