As usual with Cisco there is not an awfull lot you can do on the Phone itself.
Are you sure the Configuration is Unlocked? There should be an open Lock Icon somewhere in the Menu.
**# in the Settings usually does the trick.
For most of the things like NTP etc. you will need a TFTP Server and the Phone needs to load the configuration from there.
Many examples are out on the Web (google) how to setup it's little Brother 7970
Steff