Appendix
Add and register a headset
This telephone system accommodates up to two cordless headsets. You can buy an additional cordless headset (IS6100, purchased separately) for the telephone base. You can register a maximum of two headsets to the telephone base. The telephone base recognizes and counts a headset the same as a handset. The headset must be registered with the telephone base before use. You may need to charge the headset before registering it to the telephone base. For more details on battery charging, see page 6.
To register a headset:
1.Place the 
light on the headset flashes slowly and alternately in red and blue.
2.On the telephone base, press and hold 
/FIND HANDSET for about four seconds until the red IN USE light turns on.
3.Immediately place the headset in the headset charger. It takes about 60 seconds to complete the registration. The red IN USE light on the telephone base turns off. The 
light on the headset turns red when it is registered but not fully charged, or turns blue if it is registered and fully charged.
If the registration process is successful, you hear a dial tone when you press 
on the headset. If the registration fails, you hear “Not registered ” through the headset earpiece when you press 
on the headset. The 
light on the
headset flashes slowly and alternately in red and blue. To reset the headset,
remove it from the headset charger and then place it back into its charger. Try the registration process again.
• You cannot register a headset if any other system handset or headset is in use.
•The headset must be deregistered before registering it to another telephone system.
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