When emergencies occur or other assistance is needed, people will reach out to emergency services, such as 911, for help. More frequently, communication to 911 is being made from mobile wireless devices, rather than land based telephone lines. Because different sources for requesting emergency services may have different capabilities (e.g., text messaging), there is a need for emergency call centers to be able to move beyond ordinary PSTN telephone capabilities. For example, text messaging, e-mail, and various other features have become more common on mobile wireless devices.