Abstract: A method for facilitating wireless communication of a client device with a destination telecommunication device is provided. The method includes receiving a first telecommunication signal from the client device by a server managed by an enterprise. The method also includes analyzing the first telecommunication signal to determine if a less expensive telecommunication option is available. The method further includes, the server sending a callback signal to the client device if the less expensive telecommunication option is available. The method yet also includes accepting the callback signal via a non-human initiated response by the client device, thereby establishing a telecommunication connection between the client device and the server. The method yet further includes sending a second telecommunication signal by the server to the destination telecommunication device.

Abstract: A method for facilitating communication between at least a first user who uses a first device and a second user who uses a second device. The method may include associating possible device states with possible presence states. The possible device states pertain to the first device, and the possible presence states pertain to the first user. The method may also include determining a device state of the first device. The method may also include setting a communication presence state of the first user to be a first presence state if the device state is a first device state and setting the communication presence state of the first user to be a second presence state if the device state is a second device state. The method may also include providing information concerning the communication presence state of the first user to at least the second device.

Abstract: A method for performing a handoff for a mobile device from a first radio station to a second radio station. The method includes buffering a first media data set that is received through the first radio station. The method also includes cross-correlating a tail portion of the first media data set and a head portion of a second media data set to generate a cross-correlated media data set, if the second media data set is received through the second radio station. The method further includes synthesizing, using a modeled portion of the first media data set, a synthesized media data set, if no media data is received through the second radio station within a threshold. The method further includes extending the first media data set to generate an extended media data set, if no media data is received through the second radio station at the threshold.

Abstract: A computer-implemented method for authenticating a cellular recipient to facilitate a call from a first caller's first communication device to a cellular recipient's cellular telephone is provided. The first caller dials an enterprise extension number and a server employs a cellular telephone number associated with cellular telephone to attempt to direct the call to cellular telephone in a public cellular network. The method includes initiating, prior to completing an end-to-end bearer channel between first communication device and cellular telephone, an authentication period having a finite duration. The method also includes receiving first authentication data from cellular telephone. If first authentication data matches, during the authentication period, with second authentication data that is pre-arranged with the server, completing the end-to-end bearer channel between first communication device and cellular telephone.

Abstract: A computer-implemented method for setting, up a teleconference among a plurality of participants that comprises at least a first participant and a second participant is provided. The computer-implemented method includes receiving a conference period indication from the first participant. The conference period indicating a duration of time available for conducting the teleconference. The computer-implemented method also includes monitoring, using participant presence information available in a user presence database, whether the first participant and the second participant are available to conducts the teleconference within the conference period.

Abstract: A method for performing a handoff for a mobile device from a first radio station to a second radio station. The method includes buffering a first media data set that is received through the first radio station. The method also includes cross-correlating a tail portion of the first media data set and a head portion of a second media data set to generate a cross-correlated media data set, if the second media data set is received through the second radio station. The method further includes synthesizing, using a modeled portion of the first media data set, a synthesized media data set, if no media data is received through the second radio station within a threshold. The method further includes extending the first media data set to generate an extended media data set, if no media data is received through the second radio station at the threshold.

Abstract: A system for facilitating wireless communication. The system includes a client device configured to operate in a plurality of networks. The system also includes a server coupled to the plurality of networks and managed by an enterprise. The server is configured to store connectivity information of the client device, to route incoming media data addressed to the client device using the connectivity information of the client device, and to route outgoing media data originated from the client device through the server. The connectivity information pertains to connectivity of the client device with at least one network of the plurality of networks.

Abstract: A method for reducing data loss when a client device performs a handoff from a first radio station to a second radio station. The method includes detecting imminence of the handoff using one or more criteria. The method also includes buffering incoming data upon the imminence of the handoff to generate buffered incoming data, the incoming data being addressed to the client device. The method further includes transmitting the buffered incoming data to the client device through the second radio station if the handoff is completed and if the buffered incoming data is not discarded.