Multiplexed TTY signaling for telematics

Details Multiplexed TTY signaling for telematics Multiplexed TTY signaling for telematics

2008-01-29

2008-01-29

Tweel, Jr., John (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Of collision or contact with external object

C455S099000, C455S569200

Reexamination Certificate

active

11331617

ABSTRACT:
In response to a triggering event at a location such as a vehicle that has crashed a telematics system initiates a telecommunications call via telecommunications link8to PTN10, through which it is routed to local 9-1-1 system14and thereby to local PSAP18. Telematics system2waits,26(N), for local PSAP18to respond,26(Y), then exchanges ACN data with it per TTY protocols,28. The PSAP then sends a command code back to the vehicle or other location to allow for voice communications with a person at the location. Other functions such as shutting the vehicle engine off can also be controlled by PSAP.

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patent: 2007/0167200 (2007-07-01), Wong et al.

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