I recently had and R3 module get a squealing noise on all lines and ext on that card. I replaced it with an R6 and reprogramed the system and all phones. All is working as expected. However I have noticed that when the Auto Attendant answers an incoming line it busies out the next line in the pool to answer the call. Once the Attendant hands the call off to VM or an ext. it releases the 2nd line that it opened. I do not recall if this happened with the previous R3 card so I am wondering if this is normal behavior or do I have a programming issue? tyvmia