Providing TTY services in a vehicle

摘要

A method and a system for providing TTY services in a vehicle. The method may be carried out by the following steps: (a) providing a vehicle telematics unit configured to receive calls according to a first telecommunication standard and a second telecommunication standard, wherein the second telecommunication standard is newer than the first; (b) receiving an indication that a vehicle user desires to use a TTY device at the vehicle; (c) in response to step (b), switching to the first telecommunication standard until another indication is received indicating the user no longer desires to use the TTY device; and (d) sending or receiving a TTY message from the vehicle using the TTY device via the first telecommunications standard.

主权项

1. A method of providing TTY services in a vehicle, comprising the steps of:
establishing a cellular link between a vehicle telematics unit and a wireless carrier system, wherein the telematics unit is configured for cellular communication according to a first telecommunication standard using a first chipset and according to a second telecommunication standard using a second chipset; identifying at the telematics unit a TTY device near or within the vehicle; receiving at the telematics unit an indication that the TTY device is in an enabled state, wherein the enabled state indicates that a vehicle user desires to use the TTY device; in response to receiving the indication, switching at the telematics unit from communicating with the wireless carrier system via the second telecommunications standard to communicating with the wireless carrier system via the first telecommunications standard; and transmitting a TTY message from the telematics unit via the first telecommunications standard.