| Area Code | Location | ISDN, V.92, V.90, 56K, x2 |
Redundant Capacity |
| 312 | Chicago Downtown |
312-980-1901 |
312-980-0250 |
| 773 | Chicago Irving |
773-564-0501 |
773-564-0250 |
Chicago Kildare |
773-628-1501 |
773-628-0250 |
|
Chicago Humboldt |
773-687-0501 |
773-687-0350 |
|
Chicago Austin |
773-676-1501 |
773-676-0250 |
|
Chicago Cicero |
773-475-0250 |
773-321-6931 |
|
Chicago Summit |
773-498-1501 |
773-498-0250 |
|
Chicago Stewart |
773-437-1501 |
773-437-0250 |
|
Chicago Beverly |
773-253-1501 |
773-253-0250 |
|
Chicago O'Hare |
773-377-1501 |
773-377-0250 |
|
708 |
Bellwood/Hinsdale |
708-240-1501 |
708-240-0250 |
Berwyn |
708-797-1501 |
708-797-0250 |
|
Blue Island |
708-926-1501 |
708-926-0250 |
|
| Brookfield | 708-854-1601 |
708-854-0250 |
|
| Calumet City | 708-933-1501 |
708-933-0250 |
|
| Chicago Heights | 708-441-1501 |
708-441-0250 |
|
| Cicero | 708-735-1501 |
708-735-0250 |
|
| Harvey | 708-825-0250 |
708-271-1914 |
|
| Homewood | 708-991-1501 |
708-991-0250 |
|
| LaGrange | 708-937-0501 |
708-937-0250 |
|
| Maywood | 708-938-1501 |
708-938-0350 |
|
| Mokena | 708-995-1501 |
708-995-0250 |
|
| Oak Lawn | 708-930-1501 |
708-930-0250 |
|
| Oak Park | 708-948-1501 |
708-948-0250 |
|
| Riverdale | 708-392-1501 |
708-392-0250 |
|
| Riverside | 708-853-1501 |
708-853-0250 |
|
| River Grove | 708-697-1501 |
708-697-0250 |
|
| Summit | 708-821-1501 |
708-821-0250 |
|
| Tinley Park | 708-781-1501 |
708-781-0250 |
|
630 |
Aurora | 630-870-0250 |
630-566-4343 |
| Bartlett | 630-855-1501 |
630-855-0250 |
|
| Batavia | 630-326-1501 |
630-326-0250 |
|
| Bensenville | 630-274-1501 |
630-274-0250 |
|
| Bolingbrook | 630-296-1501 |
630-296-0250 |
|
| Downers Grove | 630-743-0250 |
630-929-2036 |
|
| Elmhurst | 630-600-1601 |
630-600-0250 |
|
| Geneva | 630-943-1501 |
630-943-0250 |
|
| Glen Ellyn | 630-866-1501 |
630-866-0250 |
|
| Hanover Park | 630-855-1501 |
630-855-0250 |
|
| Hinsdale | 630-320-1501 |
630-320-0250 |
|
| Lemont | 630-296-1501 |
630-296-0250 |
|
| Lombard | 630-613-1501 |
630-613-0250 |
|
| Oakbrook | 630-320-1501 |
630-320-0250 |
|
| Naperville | 630-536-1501 |
630-536-0250 |
|
| Roselle | 630-237-1601 |
630-237-0250 |
|
| St. Charles | 630-536-1501 |
630-536-0250 |
|
| Streamwood | 630-855-1501 |
630-855-0250 |
|
| Wheaton | 630-949-1601 |
630-949-0250 |
|
847 |
Arlington Heights | 847-704-0250 |
847-483-1807 |
| Barrington | 847-387-1501 |
847-387-0250 |
|
| Deerfield | 847-607-1501 |
847-607-0250 |
|
| Des Plaines | 847-813-1701 |
847-813-0250 |
|
| Dundee | 847-851-1501 |
847-851-0250 |
|
| Elk Grove | 847-258-1501 |
847-258-0250 |
|
| Evanston | 847-563-1501 |
847-563-0250 |
|
| Franklin Park | 847-737-1501 |
847-737-0250 |
|
| Glencoe | 847-786-1601 |
847-786-0250 |
|
| Glenview | 847-730-1501 |
847-730-0250 |
|
| Half Day | 847-383-1501 |
847-383-0250 |
|
| Highland Park | 847-780-1501 |
847-780-0250 |
|
| Lake Forest | 847-235-1501 |
847-235-0250 |
|
| Libertyville | 847-393-1501 |
847-393-0250 |
|
| Mount Prospect | 847-720-1501 |
847-720-0250 |
|
| Mundelein | 847-393-1501 |
847-393-0250 |
|
| Northbrook | 847-239-1501 |
847-239-0250 |
|
| Palatine | 847-496-1501 |
847-496-0250 |
|
| Park Ridge | 847-720-1501 |
847-720-0250 |
|
| Schiller Park | 847-737-1501 |
847-737-0250 |
|
| Skokie | 847-779-1701 |
847-779-0250 |
|
| Waukegan | 847-672-1501 |
847-672-0250 |
|
| Wheeling | 847-484-1501 |
847-484-0250 |
|
| Winnetka | 847-386-1501 |
847-386-0250 |
|
| Wilmette | 847-728-1501 |
847-728-0250 |
|
| Zion | 847-246-1501 |
847-246-0250 |
|
815 |
Crystal Lake | 815-276-1501 |
815-276-0250 |
| Frankfort | 815-277-0101 |
815-277-0250 |
|
| Joliet | 815-280-1501 |
815-280-0250 |
|
| Lockport | 815-221-1601 |
815-221-0250 |
|
| McHenry | 815-276-1501 |
815-276-0250 |
|
| Plainfield | 815-221-1601 |
815-221-0250 |
|
| Romeoville | 815-221-1601 |
815-221-0250 |