AT&T DLP73390 - Registration and Deregistration; Add and Register Handsets; Register a Handset to Your Telephone Base

Add and register handsets
Before using a new DLP70090 handset, make sure it is registered
with an AT&T DLP73290/DLP73390/DLP73490/DLP73590
telephone system (purchased separately). These telephone
systems can support up to ve 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
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3. The handset shows Registering.... If the registration is
successful, the handset beeps and its screen displays
Registered. The handset is now registered with the telephone
base.
For registration, put the handset on the
telephone base, not the handset charger.