ClearSounds A100 User Manual page 58

Call
To place an internal call
You can call another A100 phone that is registered
to your A100 base. Each phone is assigned a
number.
1. Press
2. Press the alphanumeric key that indicates the
assigned number of the handset that you are
calling.
The handset
HS(your handset's number) calling
on its screen.
56
on the scroll key.
appears on the screen.
rings and shows