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| ATS GARY PETERSON | 508 E ALDER LN SIOUX FALLS, SD | (605) 339-0200 |
| COMPRO INC | 705 E 41ST ST SIOUX FALLS, SD | (605) 338-8700 |
| DELL COMM INC | 523 N KIWANIS AVE SIOUX FALLS, SD | (605) 333-9945 |
| EXECUTONE CALL DIALNET | SIOUX FALLS, SD | (605) 335-3932 |
| LOEWENBERG TECHNOLOGIES INC | 805 S MINNESOTA AVE SIOUX FALLS, SD | (605) 335-8175 |
| NORSTAN COMMUNICATIONS | 3504 S MINNESOTA AVE SIOUX FALLS, SD | (605) 334-1075 |
| PORTER COMMUNICATIONS INC | 4316 S ARDEN AVE SIOUX FALLS, SD | (605) 332-2144 |
| SCHUMACHER COMMUNICATIONS | 703 S MARION RD SIOUX FALLS, SD | (605) 731-1806 |
| TONJES C B | 705 E 41ST ST SIOUX FALLS, SD | (605) 338-8700 |
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