FIRST AMENDMENT TO OFFICE LEASE AGREEMENT
THIS FIRST AMENDMENT TO OFFICE LEASE AGREEMENT (this "First Amendment") is made and
entered into effective as of January 8, 2001, by and between TR Lookout Partners, Ltd. ("Landlord") and
telecom technologies, inc. ("Tenant").
WHEREAS, Landlord and Tenant entered into that certain Office Lease Agreement dated as of November 14,
2000 (the "Lease"), with respect to certain Premises defined therein and commonly known as Suite 3000, 1301
E. Lookout Drive, Richardson, Texas, which Lease is incorporated herein by reference; and
WHEREAS, Landlord and Tenant desire to amend the Lease to increase the size of the premises, the rental and
the tenant improvement allowance.
NOW, THEREFORE, in consideration of the mutual agreements herein set forth and set forth in the Lease, and
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Landlord
and Tenant have agreed, and do hereby agree, as follows:
1. All terms used herein and not specifically defined shall have the same meaning herein as is ascribed to them in
2. Notwithstanding anything contained to the contrary in the first paragraph of "RIDER NO. 201" and in
EXHIBIT "C-201" to the Lease, the Premises are hereby increased to 119,966 square feet of rentable area by
adding the 10,000 square feet of rentable area on the second floor (the Expansion Space) to the First Portion,
which increases the First Portion from 91,684 square feet of rentable area to 101,684 square feet of rentable
area. This revised First Portion is described on Exhibit "A" to this First Amendment, which is attached hereto and
incorporated herein for all purposes.
3. Basic rental under the Lease, as set forth in Paragraph 1(e), is increased from $14,902,174.00 to
$16,896,818.00. ($574,644.00 is attributable to the Basement Area which is 6,841 square feet of rentable
4. The monthly rental installment as set forth in Paragraph 1(f) of the Lease is