Abstract: A method and apparatus for automatically handing over calls between a wireless LAN and a non-WLAN, with minimum or no disruption of active calls. The invention gives users flexibility in customizing hand-over preferences and allows telephony features to be transferred during the hand-over.

Abstract: A system and method allow PBX features to be extended through the public network. A teleworker calls into a PBX system and is assigned a fictitious port. The fictitious port is controlled by a telework server and appears to the PBX to be a local device. PBX features are invoked by particular sequences of DTMF tones or by voice prompt, or another data input system.

Abstract: Devices, systems and methods for transient endpoint location identification are disclosed. The exemplary method may include transmitting a registration request from an endpoint to a server. The server requests a location identification number from the endpoint. The server associates the address of the endpoint with the location identification number provided by the endpoint. When the endpoint contacts emergency personnel, the server provides the location identification number associated with the endpoint, allowing emergency personnel to locate the endpoint.

Abstract: A method, apparatus, and computer program product for flexibly assigning Session Initiation Protocol (SIP) Endpoints to any part of a communication resource is disclosed. The present invention removes the device location and behavior requirements from the application, thus providing a generic interface for robust application development.

Abstract: A method and apparatus for automatically handing over calls between a wireless LAN and a non-WLAN, with minimum or no disruption of active calls. The invention gives users flexibility in customizing hand-over preferences and allows telephony features to be transferred during the hand-over.

Abstract: A server computer coupled to a CTI capable telephone or a Teleworking Server coupled to a PBX is also coupled to a wireless gateway/router and is provided with communications software. A personal digital assistant with wireless capabilities or a cell phone with computing capabilities is provided with corresponding communications software for communicating via the wireless network with the server. The server monitors one or more phone numbers associated with each client. When a call comes in, the server immediately notifies the client. The client can direct the server to transfer the call to a nearby phone. This can be accomplished by parking the call in a system slot and by retrieving the call with a nearby desk phone, thus not needing to know the number of the desk phone. Otherwise, the client can have the call forwarded to another telephone number. The client can also redirect the call to voicemail or a personal messaging system.