I am working with Ericsson GSM and also Nortel GSM. With the Ericsson I have the ability to run MRR, FAS, and NCS. The Nortel system has the ability to run Call path Traces and Call traces. Due to the manufacture of our specific MSC we have lost some of the functionality for for the RNO products. I dont know if Ericsson has the ability to run Call path Traces or Call Traces.