Tripoth,
Like I said, .10 is not allowed as an IP Address with the /30 subnet [255.255.255.252]. If you set the IP Address of the system to 192.168.62.2 and then set your PC to 192.168.62.3 then you will be able to access the phone system.
Otherwise, you will need to allow more IP Addresses to access the phone system by changing the subnet mask to one that allows up to .10 like /28 [255.255.255.240] which will give you 192.168.62.0 to 15 to work with.
If you just want to clear the IP Address you can do that through the menu built into the system.
Click the round button once, select Network and then move up and down through the menu to change whatever you want.
If you want to just default the entire system you do that through the system menu. This will keep the licensing and get rid of everything else. If you are just uploading a new DB it will use the credentials supplied in that DB when it reboots.
Now that I think about it, I am not sure I understand what the real issue is here. Are you having problems with the IP Address or the System Programming?
Thanks,
TE