Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of network terminating interface – subscriber trunk...
Reexamination Certificate
2006-03-14
2006-03-14
Bui, Bing Q. (Department: 2642)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of network terminating interface, subscriber trunk...
C379S029010
Reexamination Certificate
active
07012993
ABSTRACT:
A method is disclosed for controlling the deactivation of a telecommunications modem based on the call type, independent of the connection quality, to minimize power consumption. The present invention is particularly useful in mobile applications when the vehicle's ignition is off and power resources are limited. Telematics control units (TCUs), installed in mobile vehicles, communicate with a service provider through a cellular communication network to provide telematics functionality for the vehicles. In one embodiment, the service provider sends a message which triggers the TCU to place a maintenance call to the service provider. During the maintenance call messaging, the TCU identifies a particular call type of the maintenance call. For any of the possible maintenance call types, the TCU will have stored in advance an allowed execution time for that call type. The TCU will set a call timer to the allowed execution time for that call type. When the allowed execution time has elapsed, the connection will be dropped and the modem will be turned off, regardless of whether the maintenance call was completed.
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Bui Bing Q.
Denso Corporation
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