In the advanced intelligent network (AIN), a feature that supports the blocking of calls to specific numbers, such as 900/976 numbers. Content blocking is a variation of call blocking. See also AIN and call block.
"content blocking." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/content-blocking>.
content blocking. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/content-blocking