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
December 15, 2004
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