We have a number of MEIPS installations. I don't have a document, but essentially MEIPS is just a seperate system thats does a pull of the CDR SQL DB overnight into its own DB. It can also either clear out the CDRs from CCM at the time, or leave them in place, so it can be a good mechanism to control DB size. We just have to make sure that of you also use CAR, that CAR carried out its pull of the DB before MEIPS does a clean up.