Appendix
Expand your telephone system
The handsets provided with your telephone system are already registered. Additional handsets registered to the telephone system are assigned
in sequential order. For instance, if you already have HANDSET 1 and HANDSET 2, the new registered handset is assigned HANDSET 3. This telephone system accommodates up to 12 handsets.
Add and register a handset
You can add new handsets (DS6401, purchased separately) to your telephone system, but each handset must be registered with the telephone base before use. When first purchased, each expansion handset shows Put handset on BASE to register after a battery is installed. You may need to charge the handset before registering it to the telephone base. For more details on battery charging, see the table on page 5.
To register a handset:
1. Make sure the handset is out of the telephone base or handset charger and shows Put handset on BASE to register. Place the handset you wish to register in the telephone base.
2. The handset displays Registering handset...
and the red IN USE light on the telephone base turns on. It takes about 90 seconds to complete the registration process. The handset displays HANDSET X Registered (X represents the registered handset number). The IN USE light
on the telephone base turns off and you hear a confirmation tone from the handset when registration completes.
If registration fails, the system will automatically try to register again. If registration fails after the third try, the handset displays Registration failed then Put handset
on BASE to register and the telephone base beeps. This may take up to five minutes to occur.
To reset the handset, remove it from the telephone base. When the handset displays Put handset on BASE to register, try the registration process again.
• You cannot register a handset if any other system 
handset is in use.
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