Mobile fast alerting

摘要

Systems and methods of operating a communication session control server. A first communication session initiation message is received from a first communication terminal, the first communication session initiation message indicating a second communication terminal with which the first communication terminal is requesting a communication session. A second communication session initiation message is sent to the second communication terminal, the second communication session initiation message indicating a delay to be used by the second communication terminal to determine when to initiate an alerting process.