KVH Industries LTD9116MKIT User Manual page 75

Unassigned handsets
These are IP handsets that are not assigned a number, and that do not belong
to a call type group. Use this handset context if you want to create a group of
IP handsets that can be called together. All unassigned IP handsets will ring
when you call a mobile number which has not been assigned to a handset.
To make an IP handset unassigned, clear all call types and the Assigned
number field when setting up the handsets in the web interface. SeeSetting
the call types for IP handsets on page 130.
Example of unassigned handsets
Call to a mobile
number which is
in the subscription
but not assigned
to any handset
Chapter 3: Operating the system
Multi-voice (optional) 63