I have a CS1K version 5.0. We have been getting harrasing calls from some crazy man that blocks his number. I can see on the caller ID that he is hitting my local carrier trunk but it just displays the trunk ACOD and not the actual incoming number. Is there any way to automatically deny calls that are blocking their numbers? If I could find out what his number is would be better. I just found out about the MCTA option with the TRC key. I am waiting for him to call back to see if TRC will actually display his number but since its blocked I doubt it. Any help is much appreciated. This guy is driving us nuts!