2.7  Filtering calls using the voice mailbox  
This service lets you filter incoming calls to your voice mailbox. When your caller leaves his message 
you can choose to communicate with him  
Activating call screening  
  Voice mail filtering programmed key  
  Enter your personal password  
  Same key to stop listening and deactivate the screening  
When you receive a call  
You hear the message left by your caller 
Use one of the following:  
   Hands free to take the call  
  Lift the receiver  
   To stop listening only  
2.8  Redialing  
Redialing the last number dialed (redial)  
   (short press)   Last number redial  
Call back on the last 10 number dialed  
   (long press)  
  Select the number to redial from the last 50 dialed numbers  
   or   Start the call  
You can also access this feature through the menu : 
  Reach the "Menu" page 
  Redial list  
  Select the number to redial from the last 50 dialed numbers  
2.9  Requesting automatic callback if internal number is busy  
  Internal number busy  
  Call back   Callback request acknowledged  
   
Automatic callback is not available if the set of your correspondent is free or if you are put on hold 
when the set is busy  
2.10 Cancelling an automatic callback  
  When your phone rings  
  Call back   Cancellation of callback request acknowledged  
Canceling the callback request is only possible when the correspondent you tried to reach released the 
line.