Block Incoming Call

Get caller ID. This allows you to ignore unwanted telephone calls from  numbers you don't recognize or choose to ignore. These boxes can be bought from  your phone company, but most newer phones come with caller ID as long as you  purchase the service from the phone company.

Utilize the phone company's services such as call blocking, unidentified call  rejection or special ring tones for people you know. Each work differently but  can achieve the same result or similar results.

With call blocking, you simply push in a certain code into your phone that  blocks the last number that called or numbers you submit. To do this, you must  contact your individual phone company because each company has different  codes.

With unidentified call rejection, it automatically disallows any number that  is anonymous. This means you'll block people who have blocked their number or  companies that have anonymous numbers used to call you.

The special ring tone service is also through your phone company but allows  you to have a ring tone that is unique for people you know. This will allow you  to not answer the phone if it's someone who has the normal ring tone, meaning  you don't know who it is.

Download call-filtering software. Certain software was created to allow  people to filter their calls, thus blocking certain callers. These filters base  their results through caller ID and allow you to set up messages for calls you  don't want to receive--such as callers who have numbers you do not recognize.  There is a lot of call-filtering software available, so be sure to  cross-reference prices and reviews to get the best possible service for the  money.

The most simple and inexpensive way to block unwanted sales calls is to sign  up for the Do Not Call Registry online. This is a free service that puts you on  a list that telemarketers are not allowed to call. See  Resources