The University's phone system is Digital ESSX service provided by ATT. UFIT Telecommunications negotiated and consummated the ESSX Service via a Special Service Agreement Contract with ATT. The ESSX system provides campus extension dialing, numerous line features, local service, access to the University's long distance services, and international long distance service. ATT maintains this customized, digital, and central office based service. ATT delivers this service to your office via ATT's copper and fiber optic cables and digital line carrier systems terminated in a Nortel DMS-100 switch. The University currently has approximately 15,000 ESSX lines. You can identify the University's Administrative ESSX Service by the following NXX numbers or "prefixes" and ranges:
 
273-0000 through 9999
294-0000 through 9999
392-0000 through 9999
846-0100 through 4999
846-6301 through 9999
 
Departments have five (5) digit dialing or "extension dialing" between the different prefixes by dialing the last number in the prefix and then the last four digits of the UF number; for example, 352-846-6301 becomes 6-6301.