NEC Univerge SV8100 System Hardware Manual page 468

Issue 9.0
7 - 42
Before removing the adapter, to avoid any
hardware problems, unplug the line cord, then
any other adapter cables.
11. To determine the APR analogue extension number
10-03-04 : Optional Installed Unit 1
Display the type of terminal installed. This can be used to verify
that the system recognizes the adapter.
10-03-06 : Terminal Type (B2)
Assign the terminal type (12) for the telephone channel, which
has the APR Adapter installed.
When you want the APR to use the same extension number as
the telephone to which it is attached, remove the terminal type
in this option. With this setup, when the analogue device is in
use, it busies out the terminal as there is no separate port
number assigned for the adapter. To reverse this, and allow the
APR to have its own extension number, reassign the terminal
type (12) in this option.
10-03-07 : Logical Port Number (B2) Read Only
The port number of the APR Adapter is displayed for the
extension (APR ports = 193~512 with all software through
3.07). The ports are assigned from the highest available port
down.
UNIVERGE SV8100
Installing SV8100 Optional Equipment