| Business | Phone |
| Allied Vaughn 935 W Chestnut St # 450, Chicago 60622 | (312) 733-0995 |
| Bosch Marketing 6927 N Tonty Ave, Chicago 60646 | (773) 763-9440 |
| Fletcher's Us Communications 4800 N Milwaukee Ave, Chicago 60630 | (773) 205-6472 |
| Call Center Gti 4700 N Ravenswood Ave, Chicago 60640 | (773) 878-8516 |
| Chatem Telecom Inc 4955 N Milwaukee Ave, Chicago 60630 | (773) 736-6283 |
| Dondra Moore Network 71 E 16th St, Chicago 60616 | (312) 461-0311 |
| Diana Group 1016 W Madison St, Chicago 60607 | (312) 666-6791 |
| Convergys Corp 2130 W Potomac Ave, Chicago 60622 | (773) 486-2557 |
| Convergys Corp 842 W Gunnison St, Chicago 60640 | (773) 907-3598 |
| Locallaunch! 200 E Randolph Street, 68th Floor, Chicago 60601 | (312) 447-2800 |
| Whoast, Inc. 17 N Loomis St Apt 4b, Chicago 60607 | (312) 492-8315 |