It's a quick job those who know how to do that...
We have brand new phone with cisco skinny image, need to change to sip image. will give access on our server and some one will be available to reset the phone when u need them to be reset.
I am able to do this, and it will be ready to use within 1 - 2 hours only. Simply give me an access over remote desktop assistance and I will configure this remotely.