CT1 and CT1+ cordless phone is a popular home use wireless phone in USA and European. Before we sale CT1 and CT1+ coreless phone to European Unions, the approved of RF module receiver’s is a necessary procedure. So, this procedure is an important for RF Engineer. If a RF Engineer can fully understand whole of these procedures, that will be a good beginning to be a professional wileless communication Engineer. This capability is good also for product evaluation. These procedures include: basic definition, equipment list, test specifications, test set up and test procedures step by step.