GTT Communications, Inc. Watch

from SC 13D/A 2 pages Schedule 1 Schedule I Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d

from SC 13D 2 pages Schedule 1 Schedule I Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d

from SC 13D 2 pages Schedule 1 Schedule I Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d

from 8-K 36 pages GTT Communications, Inc. Common Stock, Par Value $0.0001 Per Share Underwriting Agreement

from 8-K 37 pages GTT Communications, Inc. Common Stock, Par Value $0.0001 Per Share Underwriting Agreement

from SC 13G 1 page Cusip No. 587586306 Schedule 13g Page 10 of 10 - Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-1(k) Under the Securities Exchange Act of 1934, as Amended, the Undersigned Agree to the Joint Filing on Behalf of Each of Them of a Statement on Schedule 13g (Including Amendments Thereto) With Respect to the Class B Common Stock, Par Value $.0001 Per Share, of Mercator Partners Acquisition Corp., and Further Agree That This Joint Filing Agreement Shall Be Included as an Exhibit to Such Joint Filings. the Undersigned Further Agree That Each Party Hereto Is Responsible for the Timely Filing of Such Schedule 13g and Any Amendments Thereto, and for the Completeness and Accuracy of the Information Concerning Such Party Contained Therein; Provided, However, That No Party Is Responsible for the Completeness or Accuracy of the Information Concerning Any Other Party Making the Filing, Unless Such Party Knows or Has Reason to Believe That Such Information Is Inaccurate. in Witness Whereof, the Parties Have Executed This Joint Filing Agreement on April 21, 2005. Langley Partners, L.P. By: Langley Capital, LLC, as General Partner By: /S/ Jeffrey Thorp Jeffrey Thorp, Manager Langley Management, LLC By: /S/ Jeffrey Thorp Jeffrey Thorp, Manager Langley Capital, LLC By: /S/ Jeffrey Thorp Jeffrey Thorp, Manager /S/ Jeffrey Thorp Jeffrey Thorp

from S-1/A 31 pages Underwriting Agreement Between Mercator Partners Acquisition Corp. and Hcfp/Brenner Securities LLC Dated: , 2005 Mercator Partners Acquisition Company Inc. Underwriting Agreement

from S-1 4 pages Hcfp/Brenner Securities LLC 888 Seventh Avenue 17th Floor New York, New York 10106 Selected Dealers Agreement

from S-1 31 pages Underwriting Agreement Between Mercator Partners Acquisition Corp. and Hcfp/Brenner Securities LLC Dated: , 2005 Mercator Partners Acquisition Company Inc. Underwriting Agreement