IP phones enable you to make IP calls straight from your desktop, allowing your business to remove your PBX or to enable a new site with no investment in a PBX or other traditional voice equipment. These phones also have several other benefits: Moves, adds, and changes support requirements are greatly reduced due to the plug-and play-nature of these devices. They connect to a LAN port and can be configured via the VoIP Web site. A significant benefit is the ability for any user to authenticate on a particular phone, and receive their chosen phone services, such as voicemail, call screening, or forwarding.