When you first take the phone out of the box you will have to put some settings in it so it can call back to the server. To do that it is not exactly straight forward and I could not seem to find it anywhere in the documentation. After the phone starts to boot dial Hold Transfer * #. Then you will be asked for a username and login. The username is ADMIN and the password is 6633222. Now configure your phone accordingly.
Like to know to set up the QOS seeting in NEC phone Systems.
Thanks in advance
You probably need QoS on your network more than the NEC System itself. It is pretty easy to do with MikroTik. I will do a post of how I do it with MikroTik and the SV8100.