Telecommunications – Radiotelephone system – Auxiliary data signaling
Reexamination Certificate
2006-12-05
2006-12-05
Tran, CongVan (Department: 2617)
Telecommunications
Radiotelephone system
Auxiliary data signaling
C455S412100
Reexamination Certificate
active
07146181
ABSTRACT:
Methods and system for delivering presence information regarding push-to-talk subscribers are disclosed. In one method, a short message gateway receives presence information from a first push-to-talk subscriber from a presence or push-to-talk server. The short message gateway determines the location and availability of a second push-to-talk subscriber to which the presence information is directed. If the second push-to-talk subscriber is available, the SMS gateway delivers the presence information to the second push-to-talk subscriber in a manner that bypasses the SMSC. If the SMS gateway determines that the second push-to-talk subscriber is not available, the SMS gateway discards the presence information.
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Kennedy, Jr. Richard Nolan
Schaedler Richard Edward
Slate Larry Gene
Tejani Aziz A.
Jenkins Wilson Taylor & Hunt, P.A.
Tekelec
Tran CongVan
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