I recently met a new customer who had a Norstar CICS installed about 4 years ago and the only problem that they have is when making conference calls the have a very hard time hearing the third party. I have heard this from a couple of other customers. There are two customer on this CICS with 2 lines each. Each customer has a different carrier so I don' think it is a carrier issue. The trunks are on caller ID trunk cards. We havne't tried to switch the card out yet, and the customer doesn't remember if their old vendor had tried to replace the card. Any help on this subject would be greatly appreciated. Thank you.