IP Centrex platforms offer a broad range of PBX replacement and new services. These products typically work with a variety of end-user devices and interfaces, including analog and digital phones, IP desktop phones, PDAs and mobile phones, all of which are widely used in enterprises.

These platforms offer a wide variety of enhanced features, such as: unified messaging (including visual voice mail); click to talk; enhanced find-me/follow-me capabilities; Microsoft Outlook integration, with “click to call” features; the ability to return calls and voice mail from a browser; Web-based call management to monitor and control service features and capabilities; automatic call distribution capabilities; selective call acceptance; collaborative applications; presence management; and instant messaging.