1. Adc 1222 Hamilton Pkwy, Itasca, IL 60143 Coordinate: 41.98972,-88.03218 Phone: (630) 250-8184
2. Fujitsu Network Communications 500 Park Blvd Ste 1450, Itasca, IL 60143 Coordinate: 41.98591,-88.01738 Phone: (630) 285-7055