Outdated firmware is a prime target for toll fraud (hackers using your VoIP lines to call premium numbers). Mitel frequently releases patches for exploits found in the SIP stack or web server of the 6940.
Default Password : 22222 (or the specific password set by your system administrator). : Go to Firmware Update or Software Update . mitel 6940 firmware upgrade
A failed firmware upgrade can brick your phone (render it non-functional). Do not skip these steps. Outdated firmware is a prime target for toll