Patent ID: 8929849
Filing Date: 2015-01-06
Classification: H04M,H04W

Abstract:
1. A system comprising: an emergency message handling system for managing emergency short message service (SMS) text messages sent by wireless mobile communication devices, each to an emergency call service having a teletypewriter (TTY) messaging system, the emergency message handling system comprising: a media gateway configured to receive each of the converted emergency SMS text messages in the TTY format from the TTY network interface of the emergency message handling system and deliver each of the converted emergency SMS text messages in the TTY format to a selective router; and the selective router configured to receive each of the converted emergency SMS text messages in the TTY format from the media gateway and deliver each of the converted emergency SMS text messages in the TTY format to a public switched telephone network (PSTN) for delivery to the TTY messaging system of the emergency call service to which the emergency SMS text message was sent, wherein the computer processing system is configured to manage one connection between each of the wireless mobile communication devices and the respective emergency call service to which any emergency SMS text message from each respective wireless mobile communication device was sent including maintaining the one connection open between the respective wireless mobile communication device and the respective emergency call service located closest to the respective wireless communication device to which the emergency SMS text message from the respective wireless mobile communication device was sent, even if a connection with the respective wireless mobile communication device is dropped.