AT&T TL74358 Manual De Usuario

69

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.

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

instructions on page 68

.

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 

 button, then press the 

 

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. 

NOT REGISTERED