2.1 Basic System Construction
2.1.1 System Configurations
Main Unit
The main unit contains a mother board for controlling PBX functions.
Stacking Expansion Unit KX-NS320
Up to 3 Expansion Unit KX-NS320s can be connected to a KX-NS300 to expand the usage of legacy terminals
and trunks. A KX-NS320 connected to a KX-NS300 functions as a expansion unit and will be controlled by the
KX-NS300.
To connect a KX-NS320 as an expansion unit, install a EXP-M card in the KX-NS300. Then, connect the
EXP-M card and the EXP-S which is in KX-NS320 directly with Category 5 cable.
For details about connecting KX-NS300 and expansion unit KX-NS320, see "4.6.1 EXP-M Card
(KX-NS5130)".
Example:
EXP-M
EXP-S
Expansion Unit *
2
Expansion Unit *
2
EXP-S
Expansion Unit *
2
EXP-S
Main Unit *
1
*1
KX-NS300
*2
KX-NS320
H.323 QSIG network
If the network will include non-KX-NS300 PBXs (e.g., KX-TDE200, KX-NCP500), then an H.323 QSIG network
is necessary.
24 Installation Manual
2.1.1 System Configurations