Desktop: Cannot determine if DTMF is sent successfully

1. Listen to the audio produced on the phone to determine if a DTMF message (tone) was successfully sent.

2. Verify that no error is displayed on the desktop after pressing a button on the keypad.

3. Check the Finesse server logs (under /opt/cisco/desktop/logs/webservices/) to see if an API request was successfully received. Look for a log line containing the strings "API_REQUEST" and "SEND_DTMF." Correlate this log statement with the user ID and time for which the keypad button was pressed.