Adding and registering handsets
Before using a new EL50005 handset, you must register it with the 
AT&T EL52265/EL52365 telephone system (purchased separately). 
The telephone system can support up to five handsets. 
The handset(s) provided with your telephone system are already 
registered as HANDSET 1, and so forth. Additional handsets are 
assigned numbers in the sequential order they are registered (up 
to HANDSET 5). Each handset must be registered to the telephone 
base before use.
Register a handset to your telephone base 
1. Before you begin registration, make sure the handset is out of  
the telephone base or charger and shows To register HS... and  
...see manual, alternately.
2. Put the handset you wish to register on the telephone  
base cradle.
Registration and deregistration
9
For registration, put the handset on the 
telephone base, not the handset charger.