Avaya SBC can log SIP messages as processed by different subsystems and also log PPM messages. The traceSBC utility can process the log files in real-time by opening the most recent log files in the given directories. traceSBC also checks regularly if a new file is generated, in which case the old one is closed and processing continues with the new one. A new log file is generated every time the relevant processes restart, or when the size of the file reaches the limit of about 10 MBytes.