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Nikos Wireless
1343 N Ashland Ave (773) 227-6855
Calliope Inc
225 N Michigan Ave 902 (312) 938-3656
Mfs Telecom
130 E Randolph St (312) 946-0060
Telephone & Data Systems Inc
30 N Lasalle St (312) 630-1900
Shared Technologies Fairchild
10 S La Salle St 305 (312) 419-2750
Telecom Management Systems
401 S La Salle St (312) 786-5900
Nortel Networks
30 S Wacker Dr 3903 (847) 706-8400
Parallel Partners Inc
20 N Wacker Dr 3019 (312) 251-1865
Staffing Now
125 S Wacker Dr (312) 214-7135
Tmi
225 W Wacker Dr 1050 (312) 920-7000
Usn Communications Inc
10 S Riverside Plz 2000 (312) 906-3600
Medical Communication Mgmt Inc
401 E Illinois St (312) 836-4240
New Communication National
4408 N Kedzie Ave (773) 539-6960
Pace Telecommunications Inc
3333 E 143rd St (708) 862-2200
Level 3 Communications
180 N Stetson Ave (312) 819-0290
Mfs Telecom
180 N Stetson Ave (312) 803-2000
Monitor Group
111 E Wacker Dr 300 (312) 938-1849
Rolm Iii
150 N Michigan Ave (312) 332-7656
Talk America Inc
205 N Michigan Ave 4201 (312) 729-1286
Verizon
205 N Michigan Ave 1100 (312) 470-2121
Hostway Corp
1 N State St 1200 (312) 346-0072
Orlando Jones & Assoc
33 N La Salle St (312) 223-9595
Tekom Communications Inc
120 N La Salle St 1250 (312) 920-0968
Telecom Affiliates Inc
(312) 322-0700
Palmen & Assoc
1322 S Prairie Ave (312) 945-3300
Qwest Solutions Ctr
520 S Federal St (312) 922-7386
Cypress Communications
227 W Monroe St (312) 332-0752
Gtcr Golder Rauner
233 S Wacker Dr 6100 (312) 382-2200
Level 3 Communications
111 N Canal St 200 (312) 895-2900
Mci
10 S Canal St (312) 441-1943
Qwest Solutions Ctr
1 N Franklin St 2600 (312) 201-9071
Qwest Solutions Ctr
216 W Jackson Blvd (312) 372-4409
Qwest Solutions Ctr
311 W Washington St (312) 782-2981
Winstar Telecommunications Ort
101 N Wacker Dr (630) 435-0138
Infolink Communications Ltd
1052 W Fulton Market 3e (312) 226-7400
Layer One Holdings Inc
717 S Wells St 750 (312) 588-1564
Mci
1340 W Monroe St (312) 243-6107
Mfs Intelenet
800 S Wells St (312) 803-7700
Rhs Telecom
750 N Orleans St (312) 698-7020
Ulticom Inc
400 W Erie St 401 (312) 255-9030
General Telecommunications
500 N Michigan Ave (312) 644-1995
Information Technology Library
50 E Huron St (312) 944-6780
Prism Business Media
330 N Wabash Ave 2300 (312) 321-0094
Synapse
612 W Deming Pl (773) 871-1466
Singapore Telecom Usa Inc
(312) 842-4984
T R Communications Llc
3029 E 91st St (773) 933-6001
Personal Telephone Comm
3105 N Milwaukee Ave M (773) 774-7000
Web Predictive Dialer
2140 W Fletcher St (773) 477-3425
N-All-Connections
913 W 59th St (773) 892-0703
Spectrasite Communications
1416 W Huron St (312) 432-1050
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