Block callers, block messages?

[jhaFF]

Thanks. However, our phone only shows these choices under Features:

1.) Call Forward
2.) Call Waiting
3.) Auto Answer
4.) Dsskey
5.) Key as Send
6.) Hot Line
7.) Auto Redial Setting
8.) DND
9.) Intercom
10.) Call Completion
11.) History Settings
12.) Paging List
13.) Diagnostics