Cisco 7800 Series Administration Manual page 162

Remote Configuration of Headset Parameters
Parameter
DECT Radio Range
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
148
Range Default
0 (autorange), 1 (short 0
range)
Cisco IP Phone Administration
Notes
By default, the Standard
Base and Multibase have
a DECT range of over 100
feet (30 meters). If you
configure the DECT radio
range to short, the headset
base consumes less power
but users can't move as far
from the base while on a
call.