What is the limitation for Call Trace Analysis? Many tools can only store a limited amount of call data.

By default, FreeSBC keeps the last 10,000 call legs in memory. This is configurable. The maximum value is 100,000. When the maximum number of cll legs is reached, FreeSBC zips the information and writes it to disk. The size of the storage directory is configurable. You can reload zipped call trace files to memory to search them.