Got a 7200 single cabinet with the new style 14 and 21 button phones. Here is what the issue is. It is being reported that when the user on the 14 button phone hits the menu button it acts as a dss and buzzes an extension (of course not every time). Of course my luck it is going to the president of the company. The customer states that it has happened several times today and it has happened it the past. This install is only 2 weeks old. Anyone out there that has seen this. Going onsite in the a.m. and will contact support.