8.4.  Error Handling

• 8.4.1.  Errors from IP
• 8.4.2.  Errors from Voice Resources

The following diagrams illustrate how errors are handled by the IP Mail demo.

Figure 6.  Error Handling-GCEV_DISCONNECTED

Figure 7.  Error Handling-GCEV_TASKFAIL

8.4.1.  Errors from IP

The error might occur in different phases:

• If the called function returns a <0 , first process the error by calling: gc_ErrorValue( ) and gc_ResultMsg( ), and then end the call or exit the application.
• If the function was called successfully, but a GCEV_TASKFAIL event is received later, indicating that the function failed, the application will be terminated.

8.4.2.  Errors from Voice Resources

• The main error which could be received while calling the R4 function toward the Voice Resources is represented by the TDX_ERROR event.
• The IP Mail demo drops the call after receiving this error and the state transitions to IPTMAIL_DISCONNECTED.

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