Rogers Telecom 40-F 2004 FY Annual report (Canada)

Exhibit 32.1

Section 906 Certification of the

Chief Executive Officer

This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and accompanies the annual report on Form 40-F (the “Form 40-F”) for the period ended December 31, 2004 of Call-Net Enterprises Inc.

I, William Linton, the President and Chief Executive Officer of Call-Net Enterprises Inc. certify that to the best of my knowledge:

(i)	the Form 40-F fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) or 78o(d)), as amended; and
(ii)	the information contained in the Form 40-F fairly presents, in all material respects, the financial condition and results of operations of Call-Net Enterprises Inc.

Dated: February 22, 2005.
	/s/ William Linton
	Name: William Linton Title: President and Chief ExecutiveOfficer

A signed original of this written statement required by Section 906 has been provided to Call-Net Enterprises Inc. and will be retained by Call-Net and furnished to the Securities and Exchange Commission or its staff upon request.