AT&T TL74358, TL74458, TL74308 Replacing a handset, You may need to de-register your handsets if

Appendix E

Replacing a handset

You may need to de-register your handsets if:

You have four registered handsets and need to replace a handset.

-OR-

You wish to change the designated handset number of your registered handsets.

You must first de-register ALL the handsets, and then re-register each handset you wish to use.

Please read carefully through all the instructions on this page before beginning the de-registration process.

To de-register all handsets

1.Press and hold HANDSET LOCATOR/INTERCOM on the telephone base for about 10 seconds (until the IN USE light turns on and starts to flash), then release the HANDSET LOCATOR/INTERCOM button.

2.Immediately press and release HANDSET LOCATOR/INTERCOM again. You must press HANDSET LOCATOR/INTERCOM while the IN USE light is still flashing. (The light flashes about seven seconds. If the light stops flashing, start again with step number one.)

3.The handset(s) will show CONNECTING... and it will take about 10 seconds to complete de-registration. ALL handsets will show NOT REGISTERED if de-registration was successful.

NOT REGISTERED

4.To re-register the handset(s) to the telephone base, follow the registration instructions on page 68.

NOTES:

1.If the de-registration process was not successful, you may need to reset the system and try again. To reset: pick up the handset and press the PHONE/FLASH button, then press the OFF/CLEAR button and place the handset back into the charger. You may also reset by unplugging the power from the telephone base and plugging it back in.

2.You cannot de-register the handset(s) if any other system handset is in use.

3.You will need to reset the system clock after de-registering handset(s), refer to page 51 for details.

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