Advanced  Phone  Features 
179 
The LCD screen prompts the following warning: 
 
4.  Press the OK soft key to confirm the deletion or the Cancel soft key to cancel. 
Viewing the Storage Space 
You can view the storage space (e.g., total space, used space, free space) of the USB flash drive 
on the phone. 
To view the storage space: 
1.  Press Menu->USB->Storage Space. 
 
Recording Using a Record Key 
There are two ways of call recording in server: 
  Record: The phone sends SIP INFO message containing a specific header “Record: on/off” 
to trigger a recording. 
  URL Record: The phone sends HTTP URL request to trigger a recording. Contact your 
system administrator for the predefined URL. 
Note 
   
Server recording is not available on all servers. Contact your system administrator for more 
information.