Firmware version identification – phone already installed. 
1-  Power on the phone.  
2-  At the phase 2/5 network setup, press the "i" key and just after the "#" key. 
3-  ‘0 - MAC address’ menu appears. 
4-  Scroll down to ‘2 - Soft infos’. 
5-  Press the OK key. 
6-  Scroll down to ‘Run mode’:  
- if NOE is displayed, it means that the NOE signaling protocol is running,  
- if SIP is displayed, it means that the  SIP signaling protocol mode is running. 
 
3.2. 
Switching From NOE To SIP Mode 
There are two methods. 
 
Method 1 - Manual 
1-  Power on the phone.  
2-  At the phase 2/5 network setup, press the "i" key and just after the "#" key. 
3-  ‘0 - MAC address’ menu appears. 
4-  Scroll down to ‘2 - Soft infos’. 
5-  Press OK. 
6-  ‘Version NOE x.xx.xx’ is displayed. 
7-  Scroll down to ‘Run mode’, ‘Set Mode: NOE’ is displayed. 
8-  Press OK to switch from NOE to SIP mode. 
9-  Press ‘#’ to save the new configuration. 
10- Press the Hang Up key to reset the device to take into account the new configuration. 
 
For checking SIP status, follow ‘Firmware version identification already installed’ section.