User`s manual

Getting started

Deregister handsets and headset

NOTES:

If the deregistration process is not successful, you might need to reset the

system and try again. To reset, you can press EXIT on the telephone base.

You can also reset the telephone base by unplugging the power from the

telephone base and plugging it back in.

To register a cordless handset again, refer to the registration information on

page 10.

If you already have 10 registered handsets and need to replace a cordless

handset, or add a cordless headset (AT&T model TL7600, sold separately);

or, if you wish to change the assigned extension numbers of your handsets,

you must first deregister all the handsets, and then register each handset

you wish to use again. Please read carefully through all the instructions

on this page before beginning the deregistration process. Deregistering a

cordless handset does not remove the data saved on the handset.

This process deregisters all cordless handsets and any cordless headset

registered to the telephone base. Please make sure the telephone system is

not in use before deregistration.

1. On the telephone base, press MENU/ENTER.

2. Scroll down to Register HS and press MENU/ENTER.

3. Scroll down to Deregistration and press MENU/ENTER.

4. The telephone base screen shows Deregister all devices?

<=No >=Yes. Press

REP to exit or press SKIP to

continue the deregistration.

5. The telephone base shows Deregistering. It takes up to

10 seconds to complete the deregistration. The telephone

base shows All devices deregistered and beeps when the

deregistration is successful.

COVM

Speed dial setup

Customer support

Registration

Deregistration

Deregister all

devices?

<=No >=Yes

Deregistering

All devices

deregistered