EXHIBIT 31.2
                            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, certify that:

     1.   I  have  reviewed  this  Quarterly  Report  on  Form  10-QSB  of  ATSI
          Communications, Inc., a Nevada Corporation;
     2.   Based  on  my  knowledge,  this  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 report;
     3.   Based  on  my  knowledge,  the  financial  statements,  and  other
          financial  information  included in this report, fairly present in all
          material  respects  the financial condition, results of operations and
          cash  flows  of  the small business issuer as of, and for, the periods
          presented in this report;
     4.   The  small  business  issuer's  other  certifying  officer  and  I are
          responsible  for  establishing and maintaining disclosure controls and
          procedures  (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))
          for the small business issuer and have:

          a)   Designed  such  disclosure  controls  and  procedures,  or caused
               such  disclosure controls and procedures to be designed under our
               supervision,  to ensure that material information relating to the
               small  business  issuer, including its consolidated subsidiaries,
               is made known to us by others within those entities, particularly
               during the period in which this report is being prepared;
          b)   Evaluated  the  effectiveness  of  the  small  business  issuer's
               disclosure  controls  and procedures and presented in this report
               our  conclusions  about  the  effectiveness  of  the  disclosure
               controls  and  procedures, as of the end of the period covered by
               this report based on such evaluation; and
          c)   Disclosed  in  this  report  any  change  in  the  small business
               issuer's  internal control over financial reporting that occurred
               during  the  small  business  issuer's most recent fiscal quarter
               (the small business issuer's fourth fiscal quarter in the case of
               an  annual report) that has materially affected, or is reasonably
               likely to materially affect, the small business issuer's internal
               control over financial reporting; and

     5.   The  small  business  issuer's  other  certifying  officer  and I have
          disclosed,  based  on  our  most recent evaluation of internal control
          over  financial reporting, to the small business issuer's auditors and
          the  audit committee of small business issuer's board of directors (or
          persons performing the equivalent functions):

          (a)  All  significant  deficiencies  and  material  weaknesses  in the
               design  or operation of internal control over financial reporting
               which  are  reasonably  likely  to  adversely  affect  the  small
               business  issuer's  ability  to  record,  process,  summarize and
               report financial information; and
          (b)  Any  fraud,  whether  or  not  material, that involves management
               or  other  employees  who  have  a  significant role in the small
               business issuer's internal control over financial reporting.

By /s/ Antonio Estrada
Antonio Estrada
Corporate Controller and Chief Financial Officer
March 15, 2005


<PAGE>