Intercom phones are used for voice calling use within a building. Each cabin has individual intercom phones. Employees are easily communicating to the reception or any other places with sitting from a single place. There are some shortcut key functions for setting dialing numbers to other places within a building. This facility is more helpful for office assistants because the manager will call any of the company employees both are working on different floors. Office assistant doesn’t need to walk and call that employee this facility will help to call the employee and reach the boss cabin within a minute.