It appears you can on certain 2004's in another recent thread but you would need to have a TFTP server and the SIP firmware for that phone.
Your best off to get a more up to date phone.
Carrier supplying a SIP trunk service or for a DNon a PBX?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.