6.3.  Demo-Related Initialization (Appinit.c)

The application main( ) function calls MailInitialization( ), which does the following:

1. Gets any arguments from the command line.
2. Calls IPTResetSession( ) to reset the demo data structures and initialize all channels' states to INIT.
10. Reads information from the configuration file (iptmail_r4.cfg or other CFG file determined by the user) and updates the ConfigFileParm in the AppSession data structure.
1. Calls gc_Start( ): starts all configured, call control libraries.
2. Sets up the call-back handler, PDLsr_enbhdlr( ).
3. Calls getVoiceChannels( ) which checks the number of available voice devices:
   • Gets the number of voice boards, by calling PDLsr_getboardcnt( ).
   • For each board that was found:

· Opens the board, by calling dx_open( ).

· Finds number of channels per board, by calling ATDV_SUBDEVS( ).

· Calculates the logical board and channel and saves them into AppSession.VoiceParams.

· Closes the board, by calling dx_close( ).

7. Calls getIPChannels( ) which checks the number of available IP channels:
   • Gets the number of voice boards, by calling PDLsr_getboardcnt( ).
   • For each board that was found:

· Opens the board, by calling gc_open( ).

· Finds number of IP channels per board, by calling ATDV_SUBDEVS( ).

· Calculates the logical board and channel and saves them into AppSession.ipParams.

· Closes the board, by calling gc_close( ).

8. Calls getGateChannels( ) to find the demo MAX available channels (the smaller of available IP or Voice Devices and the number of channels specified with the --n command line option, if used).

   NOTE:

   The printf( ) function must be used when printing an error/ trace/warning during the above initialization operations, because some actions are not related to a specific channel and log files are not yet opened.

9. Opens the channels' log files if --l command-line option was used.
11. Prints information from the configuration file.
12. Calls the IPInit( ) function. See Section 6.4.  IP Link-Related Initialization for a description of the IPInit( ) function.
13. Calls the VoiceInit( ) function. See Section 6.5.  Voice-Related Initialization for a description of the VoiceInit( ) function..
14. Calls the InitMailBoxs( ) function, which initializes the MAILBOX structure.
15. The application main( ) function calls waitForKey( ), to receive keyboard input.

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