question 1
Is battery off the shelf or do I need to order through dealer?

Off the shelf.

question 2
I see that there is kbd input. How is video handled on these units if bios setting needed to be updated, or if I wanted to interact with hard drive natively?

The system will only support a video card during maintenance. The card must be removed for normal operation. If you want interaction with the hard drive, pull it out and put it on another PC as a slave drive. And by the way, the hard drive only handles the voicemail application, the phone system is run by the motherboard.

I made copy of drive data by plugging drive into other system. But I'd like to boot into system like a normal PC.

I don't know understand what you’re asking here. The only way to program this system is with the proprietary Axxent software connected by the serial cord or by modem. I know this Axxent looks like a computer on the outside but it's just a phonesystem that was shoehorned into computer cabinet.


-037- 12:00 01-01 M203 INF HW CP [2.0.0]: On-Line From DKSC Board
-038- 12:00 01-01 M539 WRN HW CP [2.0.0] (DKSC Board): Incompatible (DB Type =
+DKSC12 Board)
-039- 12:00 01-01 M203 INF HW CP [1.0.0]: On-Line From DKSC12 Board

Wondering what the "Incompatible" error means.

The only code to be concerned about is M539 incompatibility. Off hand that tells me that you have 12 port station board in the slot and the default programmed data in the system is looking for the older style board. Once this system gets properly programmed you shouldn't see that anymore.

Rhett