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Code written for the sipXecs project should use logging libraries from the project: the OsSysLog class (in sipXportLib) for C++. Java code should use the log4j logging framework and use the and the log4j Appender defined in org.sipfoundry.commons.log4j.SipFoundryAppender and the log4j Layout defined in org.sipfoundry.commons.log4j.SipFoundryLayout.
Where possible, third party code should have its logging wrapped to conform to these conventions.