Just remember with Panasonic, you will spend many un-reimbursed hours trouble-shooting your system. I would make sure you document all calls to Tech support and press them to the wall for answers.

The only reason I say this is the 624 debacle cost our company untold hours of trouble-shooting and major customer dissatisfaction. The software on that 624 was prone to software glitches that still crop up to this day. I can still remember them telling me that they are "unaware of any problems that you are describing" and said to get some line current filters from sandman.com to solve the problem---it didn't.

Since the software on the 848 is so uncomplicated and easy to get around in ;-), the problem might just be a box checked to limit call duration C0 to C0. BTW, have they gotten around to making idle line pickup go from low to high yet?