作者: Guy Helm , Peter Wenzel , Kuntal Chowdhury
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摘要: A packet data service node is formed to establish an “always on” connection with a mobile terminal by way of control function card or device the ability determine when no longer requires previously established point-to-point protocol communication link. Thus, prevent unnecessary communications after loses RF, PDSN transmits PPP inactivity timer remaining terminal. The then generates s signals regaining RF based upon internal counter value initialized received time counter. In described embodiment, equal summed total amount expected be expended (in worst case situation) soliciting responses from pings (e.g., LCP-Echo-Requests).