The most common interface to the phone system for the user is the telephone. While the user web portal is a great way for the user to make changes to their phone and manage their voicemail, at the end of the day, the user wants to make phone calls.
Each hardware or software phone will have different methods for accessing features that are handled at the phone level. Features such as dialing a call, putting a call on hold, transferring a call, and setting up a multi-party (conference) call are all handled in the phone. How to use these features is different for every phone and will be documented in the user guides for your respective device.
Other calling features such as paging, intercom, and park orbits are handled by the phone system. These features are accessed by entering what are called feature codes. A feature code usually starts with an asterisk (*) followed by a one or two digit feature code. The features outlined in this section are described with...