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      AMERICAN TELESOURCE INTERNATIONAL, INC. AND SUBSIDIARIES        EXHIBIT 11
             COMPUTATION OF EARNINGS (LOSS) PER SHARE

<TABLE> 
<CAPTION> 
                                                            For the three months ended                For the six months ended
                                                       --------------------------------------  -------------------------------------
                                                        January 31, 1998    January 31, 1999    January 31, 1998   January 31, 1999
                                                       ------------------  ------------------  ------------------ ------------------
<S>                                                    <C>                 <C>                 <C>                <C> 
COMPUTATION OF NET LOSS PER SHARE                                                                                                
    Net loss                                                     ($515)             ($1,089)            ($1,813)           ($1,731)
                                                               =======             ========            ========           ======== 
WEIGHTED AVERAGE NUMBER OF SHARES OF 
  COMMON STOCK OUTSTANDING                                      38,446               46,324              37,757             45,976 
                                                               =======             ========            ========           ========

BASIC LOSS PER COMMON SHARE                                     ($0.01)              ($0.02)             ($0.05)            ($0.04)
                                                               =======             ========            ========           ========

COMPUTATION OF DILUTED LOSS PER SHARE                                                                                             
    Net loss                                                     ($515)             ($1,089)            ($1,813)           ($1,731)
    Interest not incurred upon assumed conversion                                                                                 
      of convertible note                                            3                    -                   6                  -
                                                               -------             --------            --------           --------
    Net loss applicable to common stockholders                                                                                    
      used for computation                                       ($512)             ($1,089)            ($1,807)           ($1,731)
                                                               =======             ========            ========           ========
    Weighted average number of shares of common                                                                                   
       stock outstanding                                        38,446               46,324              37,757             45,976
                                                                                                                                  
    Weighted average incremental shares outstanding                                                                               
       upon assumed conversion of options and warrants          14,693                3,549              14,855              2,801
                                                                                                                                  
    Weighted average incremental shares outstanding                                                                               
       upon assumed conversion of convertible note                 191                    -                 196                  -
                                                               -------             --------            --------           --------

WEIGHTED AVERAGE COMMON SHARES AND                                                                                                
  COMMON SHARE EQUIVALENTS USED FOR                                                                                               
  COMPUTATION                                                   53,330               49,873              52,808             48,777
                                                               =======             ========            ========           ========

DILUTED LOSS PER COMMON SHARE AND COMMON                                                                                          
                                                               =======             ========            ========           ========
  SHARE EQUIVALENT                                              ($0.01)              ($0.02)             ($0.03)            ($0.04)
                                                               =======             ========            ========           ========
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(a)  This calculation is submitted in accordance with Item 601 (b) (11) of
     Regulation S-K although it is not required by SFAS No. 128 because it is
     antidilutive.