Exhibit 31.2
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                            CERTIFICATION PURSUANT TO
           18 U.S.C. SECTION 1350, AS ADOPTED PERSUANT TO SECTION 302
                        OF THE SARBANES-OXLEY ACT OF 2002

I, Antonio Estrada, Corporate Controller, certify that:

1.        I have reviewed this Annual Report on Form 10-K of ATSI
          Communications, Inc.;

2.        Based on my knowledge, this annual report does not contain any untrue
          statement of a material fact or omit to state a material fact
          necessary to make the statements made, in light of the circumstances
          under which such statements were made, not misleading with respect to
          the period covered by this annual report;

3.        Based on my knowledge, the financial statements and other financial
          information included in this annual report, fairly present in all
          material respects the financial condition, results of operations and
          cash flows of the registrant as of, and for, the periods presented in
          this annual report;

4.        The registrant's other certifying officers and I are responsible for
          establishing and maintaining disclosure controls and procedures (as
          defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant
          and we have:

          a)   designed such disclosure controls and procedures to ensure that
               material information relating to the registrant, including its
               consolidated subsidiaries, is made known to us by others within
               those entities, particularly during the period in which this
               annual report is being prepared;

          b)   evaluated the effectiveness of the registrant's disclosure
               controls and procedures as of date within 90 days prior to filing
               date of this annual report (the "evaluation date"); and

          c)   presented in this annual report our conclusions about the
               effectiveness of the disclosure controls and procedures based on
               our evaluation as of the Evaluation Date;

5.        The registrant's certifying officers and I have disclosed, based on
          our most recent evaluation, to the registrant's auditors and the audit
          committee of registrant's board of directors (or persons performing
          the equivalent function):

          a)   all significant deficiencies in the design or operation of
               internal controls which would adversely affect the registrant's
               ability to record, process, summarize and report financial data
               and have identified for the registrant's auditors any material
               weaknesses in internal controls; and

          b)   any fraud, whether or not material, that management or other
               employees who have a significant role in the registrant's
               internal controls; and

6.        The registrant's other certifying officers and I have indicated in
          this annual report whether or not there were any significant changes
          in internal controls or in other factors that could significantly
          affect internal controls subsequent to the date of our most recent
          evaluation, including any corrective actions with regard to
          significant deficiencies and material weaknesses.

Date: November 13, 2003

By /s/ Antonio Estrada
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Antonio Estrada, Corporate Controller
Principal Financial
Officer