A caller ID with call screening function will do. You can customize this function to cope with your answering rule. You can create a list of contacts preset in your system so that all numbers not included in the list will be automatically directed to your voicemail.
no there is no charge to block unwanted calls
Whitelisting
call 1800 reverse
Yes
yes
Just dont answer
This can be done via the Boost website. There will be a prompt to enter the mobile number from which one wishes to view the calls, followed by a request for the passcode. This will enable the user to view their incoming calls from the past month.
Your phone carrier will block it for you, you just have to go to the store and ask them to block it or you could call them depending on the network
*77 to activate *87 to turn off
Pretend to be someone else
Duct tape and bollistics.
I am not sure what you mean. You need to block calls to your land line from cell phones only? I don't think it's possible. You can call your phone company and ask them to block a particular phone number (for a fee), or you can buy one of those devices that let you block calls from 'unknown' numbers. Another option is to find out who calls you and ask them to stop. You can enter the number that calls you at 800notes.com, http://800notes.com , to see if other people have reported calls from it. If yes, then you might find our who the caller is and how to stop the calls.