Abstract: In accordance with a method and apparatus for providing unified communications and messaging management based on a user's presence information, a presence system is coupled to a PBX, a voice mail service and a LAN in an office. The presence system keeps track, in a secure manner, of registered users' current “presence context” (e.g. at desk, campus roam, at hotel, at home, etc.). When a call to a user is received by the PBX, the presence system forwards the call to the user in accordance with the user's current presence context. An IVR system may be provided to make communication and messaging options available to the caller, which options depend on the user's current presence context.