* 4 CO lines and 16 extensions
* Optional upgrade cards: KX-T123270 adds 8 extensions (up to system limit of 12
lines) and KX-T123280 adds 4 CO lines (up to system limit of 32 extensions)
* Interface of KSU is amphenol: 1x50 pin amphenol per 8 extensions
* Voice mail integration software
* CO line group
* Remote and on-site administration via laptop / computer
* DISA
* Flexible station numbering
* Off-premises extension
* Absent message capability
* Off-hook call announce (with KX-T7130)
* Station naming / display