Exhibit 10.11.1 Amendment #3 to Master Agreement Dated 8 August, 1997, between PathNet, Inc. And NEC America, Inc. Except as expressed herein, the terms and conditions of the Master Agreement remain in full force and effect: NEC America, Inc. (Seller) and PathNet, Inc. (Buyer) do hereby agree to the following: To delete the last sentence of Paragraph 3.5, page 4, beginning with "Nothing contained..." and replace with the following: "Pathnet, Inc. shall commit to purchase from NEC, America, Inc. the Equipment in a cumulative amount of no less than $200,000,000.00 US dollars by March 31, 2003." NEC America, Inc. PathNet, Inc. By: /s/ Patrick Stewart By: /s/ David Schaeffer ---------------------- ----------------------- P. Stewart D. Schaeffer Title: AGM, RCSD Title: Chairman Date: 4/30/98 Date: 5/4/98 --------------------- ----------------------