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| AAA COMMUNICATIONS | 6200 THORNTON AVE DES MOINES, IA | (515) 254-1161 |
| BAKER COMMUNICATIONS | 6200 THORNTON AVE DES MOINES, IA | (515) 558-8500 |
| COMMUNICATION INNOVATORS | 1301 56TH ST DES MOINES, IA | (515) 262-7686 |
| IMPACT SYSTEMS | 4489 NW 2ND ST DES MOINES, IA | (515) 284-5000 |
| INTERSTATE BUSINESS SYSTEMS | 605 MORTON AVE DES MOINES, IA | (712) 824-7227 |
| POWER & TELEPHONE SUPPLY CO INC | 3107 SW 61ST ST DES MOINES, IA | (515) 244-4375 |
| TCT COMPANY | DES MOINES, IA | (515) 285-6116 |
| TELSTAR COMMUNICATIONS | DES MOINES, IA | (515) 263-0773 |
| TRINTEL COMMUNICATIONS | 5140 PARK AVE DES MOINES, IA | (515) 282-6700 |
| UNITED STATES CELLULAR | 1001 73RD ST DES MOINES, IA | (515) 279-7704 |
| VALCOM BUSINESS CENTER | DES MOINES, IA | (515) 243-7536 |
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