Vertical Communications and FXT - Manual (Page 94)

Accessing The DSS/BLF Console Button Levels
The IB24X and IB48X DSS/BLF consoles have four levels of buttons,
quadrupling the consoles’ button capacity. The four buttons at the bottom of each
console allow you to select which button level is currently active. To change
button levels, press one of the buttons at the bottom of the console. The leftmost
button activates level 1, the next button activates level 2, etc. A light beside the
appropriate button lights to indicate which level is currently active.
86 Large Screen Display Speakerphone Station User’s Guide
Other Advanced Features GCA70-349
IB48X
DSS/BLF Console IB24X
DSS/BLF Console