The first 9-1-1 systems were called Basic 9-1-1 systems. All 9-1-1 calls were directed to one Public Safety Answering Point (PSAP) per telephone office. 9-1-1 dispatchers only received the caller's telephone and had to ask the caller for name, address and county location.
Advances in computer systems and telephone company technology combined to create ENHANCED 9-1-1 systems. Today, 86 of 88 Ohio counties have Enhanced 9-1-1 systems on line. Enhanced systems allow 9-1-1 calls to be routed to the proper Public Safety Answering Point (PSAP) within each county. Also, each 9-1-1 call displays the caller’s telephone number, name, and address, as well as the correct police, fire, and emergency medical response agency for each citizen within the county. In March of 2011, Erie County also completed the installation of Phase II Wireless 9-1-1, which will help locate where cellular 9-1-1 callers are calling from utilizing a mapping system.