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6.  Press the  or  key to select base 1 2 3 4 5 6 7 8. 
Normally, 1 blinks and you just have to press the OK key. 
7.  "Enter code" appears on the display 
Press OK. 
The set displays successively: 
•  "Please wait" 
•  "Still waiting" 
•  "Declare base OK" or "Failed, Retry" 
 If the registration fails, reset the handset before restarting the operation. Note : 
Stop and restart the mobile, then check to see if it is active. 
3.11.2.2 DEREGISTERING AN M90X MOBILE TERMINAL 
 
Press the  Menu key 1. 
2. 
3. 
4. 
5. 
Press the middle  key. “Personalize” is displayed 
Press the  Personalize key 
Press the middle  or  key several times until "Declare base" is displayed 
Press the  Declare base key 
The handset display shows: 
 
Declare  
Base number? 
1 2 3 4 5 6 7 8  OK
 
 
6.  Press the  or  key to select the base to be deleted and confirm by pressing the OK  key 
The handset display shows: 
 
Delete base 
n 
 no  yes   
 
• (n = base number) 
• Press the key: Yes  
The handset display shows: 
 
Enter code 
n 
 OK 
 
 
7.  Stop and restart the mobile by pressing the "C" key for a few seconds but not long enough 
for the display to change.