8.1.  Basic Voice Mail Operation

Each state function within the voice mail part of the application performs the same basic activities:

1. Waits for an IP and Voice Resource event.
2. Uses dx_play( ) to play the appropriate menu. TDX_PLAY termination events will be generated to indicate completion.

 
After getting the TDX_PLAY event, the application calls ATDX_TERMMSK(chdev) to check the termination reason. It may be either TM_EOD (end of data/file) or TM_MAXDTMF (user pressed digit/s as determined by the TPT -- Termination Parameter Table).

• If TM_EOD, then play the relevant menu again.
• If TM_MAXDTMF, then collect the DTMF from the digit buffer.

3. Uses dx_rec( ) to record a file. TDX_RECORD termination events will be generated to indicate completion.
4. Calls dx_getdig( ) to collect the DTMF tone(s) from the digit buffer. TDX_GETDIG termination event will be generated to indicate completion.
5. Calls dx_clrdigbuf( ) to clear all digits in the channel's firmware digit buffer.
6. Calls dx_clrtpt( ) to clear the Table Parameter Termination (TPT) structure.

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