EXHIBIT 10.4 September 1, 1998 Mr. F. J. Pollak Mr. David Topp President and CEO Chairman Topp Telecom, Inc. Topp, Inc. 8200 N.W. 27 St., Suite 117 8280 N.W. 27 St., Suite 506 Miami, FL 33122 Miami, FL 33122 RE: Topp Telecom, Inc. Dear Mr. Pollak and...