By Karina Frost In the corporate world today, every business needs to have phone systems that are advanced technologically. Before the technological world was as developed as it is today, the corporate organizations were forced to use phone systems that were outdated and lacked some very important features that have become essential in the world today. The telephones in the past used to operate over copper wires and their features included only receiving and returning calls among other simple things. However, the advanced business telephone systems...