VoiceXML logging
Various levels of logging messages can be enabled (and disabled) in the default.cfg file. Logging levels are specified in the file by the parameter: client.log.diagTag.number, where number specifies the type of log messages to generate.
There are several logging levels specified in default.cfg. For standard debugging, enable all logging levels except for 3000 and 4000. Due to the volume of log messages, logging levels 3000 and 4000 should be enabled only for debugging specific http protocol or ECMAscript issues.
The following logging levels are particularly useful for debugging and troubleshooting purposes:
- client.log.diagTag.3000 shows inet messages.
- client.log.diagTag.4000 shows ECMAscript messages.
- client.log.diagTag.5000 shows activity associated with spoken words (using text-to-speech), prompts, announcements, and other audio playback.
- client.log.diagTag.6000 shows activity associated with grammar loading, activation, and deactivation. Also provides best and value results, which show what was trying to be matched in the grammar (best) and what the end result was (value).
- client.log.diagTag.6001 shows further detail for 6000-level logging concerning grammar operations.
- client.log.diagTag.7000 shows messages describing IRAPI interactions, new call message, value of session.connection.call_tag variable.
- client.log.diagTag.8000 shows errors such as unsupported mime type.
- client.log.diagTag.8001 shows standard pre-defined VoiceXML errors such as error.badfetch.
- client.log.diagTag.8002 shows variable settings, fetch information, fetch errors, and parsing errors. This logging level is useful for tracing through application logic and finding any errors in the application syntax.
- client.log.diagTag.9000 shows object tag messages.
- client.log.diagTag.10000 through 10002 show basic call setup and tear down information.
By default, all of the logging parameters are disabled. A disabled logging parameter is indicated by either or both of the following:
- The comment character ("#") at the beginning of the line specifying the parameter
- A tag value of zero ("0")
Following are examples of a disabled logging parameter:
client.log.diagTag.3000 VXIInteger 0
# client.log.diagTag.3000 VXIInteger 1
# client.log.diagTag.3000 VXIInteger 0
