System and method for providing location information to a public safety answering point during an emergency 911 call from a WiFi handset

A system for providing location information to a public-safety answering point during an emergency 911 call, the system comprising:

• a network access point configured to:
• store physical address information comprising a street number and name and ZIP code of a physical location associated with a wireless device;
• receive an emergency 911 call from the wireless device;
• in response to receiving the emergency 911 call, generate a modified caller identification frequency shift keying (CIFSK) signal containing the stored physical address information, wherein generating a modified CIFSK signal comprises:
• retrieving the stored physical address information;
• and
• modifying the CIFSK signal by replacing data in a first, 168-bit, data field of the CIFSK signal with a first string of 14 characters or less comprising the stored street number and name, a second string of two characters comprising a street type and a third string of five characters comprising the stored ZIP code, and replacing data in a second, 144-bit, data field of the CIFSK signal with a character string comprising a combination of name, phone number, and time data;
• and
• transmit the modified CIFSK signal to cause a public safety answering point (PSAP) with E911 Phase I capabilities to display the stored physical address information contained in the modified CIFSK signal on a type II caller ID device after the PSAP goes off-hook to receive the emergency 911 call.