Appendix B: Call Setup and Call Release Scenarios

Each scenario is presented in tabular format. The tables provide the following information:

• Application - Lists the functions called by the application
• Libgcs7 - Describes SS7 call control library activities including messages sent to the SS7 stack and events sent to application
• State - Lists current state
• Stack - Describes messages sent by the SS7 stack to call control library and to network interface
• Network - Lists the ISUP messages exchanged between the network and the device

Note: All scenarios described in this appendix operate in asynchronous mode.

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