User Manual

Adding and registering handsets/headsets

Your telephone can support up to 12 DECT 6.0 cordless handsets (AT&T model

CRL80112, sold separately) or up to 10 cordless handsets and 2 cordless

headsets (sold separately). Visit www.telephones.att.com/headsets for

a list of compatible DECT 6.0 cordless headsets. Each new handset or headset

must be registered to the telephone base before use. You must register each

handset or headset separately.

To register a cordless headset to this telephone system, please refer to the user’s

manual of the cordless headset for more details. To register a cordless handset,

see below.

The handsets provided within your product box are already registered as

HANDSET 1, and so forth. Additional handsets are assigned numbers in the

sequential order they are registered (up to HANDSET 12).

1. Before you begin registration, make sure the handset is out

of the telephone base or charger and shows To register HS,

see manual..

2. Put the handset you wish to register on the telephone

base cradle.

3. The screen shows Registering... Please wait and the IN

USE light turns on. It takes up to 90 seconds to complete

registration. Then, HANDSET X Registered appears on the

screen, with X being the handset number (1-12). The handset

beeps and the IN USE light on the telephone base turns

off. The handset is now registered with the

telephone base.

If registration fails, the system will automatically

try to register again. If registration fails after the

third try, Registration failed appears on the

screen for a few seconds, and then To register

HS, see manual.. This may take up to five

minutes to occur. Please start again from

Step 1.

To register HS,

see manual.

Registering...

Please wait

Appendix

For registration, put the handset on the

telephone base, not the handset charger.