Abstract: Systems and methods of preventing an Internet service provider from identifying a stream of data packets as carrying a voice over Internet protocol telephony communication can make use of encryption techniques to prevent the Internet service provider from examining the content of the data packets. Also, multiple communications channels may be established between a telephony device and elements of an IP telephony system. A stream of data packets bearing the media of an IP telephony communication is then separated into sub-streams, and each sub-stream is sent through a different one of the communications channels. This prevents an Internet service provider from identifying a stream of data packets as bearing the media of an IP telephony communication based on a pattern in the data traffic.

Abstract: When a mobile telephony device is conducting a voice over Internet protocol (VOIP) telephone call via a data network, and the mobile telephone device transitions from a first wireless data connection to a second wireless data connection, signaling between the mobile telephone device and a media relay inform the media relay how to address data packets bearing the media of the call after the transition has occurred. In some embodiments, the mobile telephone device establishes multiple simultaneous wireless data connections, and the mobile telephony device switches the media of the call between the wireless data connections depending on the quality of the wireless data connections.

Abstract: Systems and methods of establishing a communications channel between a first telephony device and a second telephony device obtain information about the capabilities of various data network elements that can be used to establish the communications channel. The information about the elements is used to select a combination of elements that are used to establish the communications channel. A communications channel may also be monitored while it is in use. If the requirements for the channel change, the communications channel may also be changed accordingly. If any of the elements become incapable of providing the required level of service or functionality for a communications channel, the element may be removed from the communications channel.

Abstract: When a voice over Internet protocol (VOIP) telephone call is being conducted by a mobile telephony device, measurements of at least one condition that exists for the mobile telephone device during the VOIP telephone call are taken during the duration of the telephone call. The measurements could be taken periodically as the VOIP telephone call progresses. The measured condition is one that could affect the perceived quality of the VOIP telephone call. The measurements of the at least one condition are recorded against the telephone call for later use and analysis. The recorded information may be analyzed to determine how to modify a setting of the mobile telephony device to improve the quality of VOIP telephone calls conducted with the mobile telephony device.

Abstract: When a voice over Internet protocol (VOIP) telephone call is being conducted by a mobile telephony device, measurements of at least one condition that exists for the mobile telephone device during the VOIP telephone call are taken during the duration of the telephone call. The measurements could be taken periodically as the VOIP telephone call progresses. The measured condition is one that could affect the perceived quality of the VOIP telephone call. The measurements of the at least one condition are recorded against the telephone call for later use and analysis. The recorded information may be analyzed to determine how to modify a setting of the mobile telephony device to improve the quality of VOIP telephone calls conducted with the mobile telephony device.

Abstract: Systems and methods performed by a telephony device allow the telephony device to test the quality of multiple potential paths which can be used to conduct a telephony communication. By testing the conditions that presently exist, the telephony device can choose the path that is presently offering the best quality. A telephony communication may be setup over an initial path, and then subsequent testing may determine that it is best to switch to an alternate path offering better call quality. The initial path used for the telephony communication may be the one that offers the fastest initial connection. When multiple potential paths exist, the telephony communication may be conducted over a first path while keep alive messages are communicated over a second path so that the telephony communication can be quickly switched to the second path.

Abstract: When a mobile telephony device is conducting a voice over Internet protocol (VOIP) telephone call via a data network, and the mobile telephone device transitions from a first wireless data connection to a second wireless data connection, signaling between the mobile telephone device and a media relay inform the media relay how to address data packets bearing the media of the call after the transition has occurred. In some embodiments, the mobile telephone device establishes multiple simultaneous wireless data connections, and the mobile telephony device switches the media of the call between the wireless data connections depending on the quality of the wireless data connections.

Abstract: When a mobile telephony device is conducting a voice over Internet protocol (VOIP) telephone call via a data network, and the mobile telephone device transitions from a first wireless data connection to a second wireless data connection, signaling between the mobile telephone device and a media relay inform the media relay how to address data packets bearing the media of the call after the transition has occurred. In some embodiments, the mobile telephone device establishes multiple simultaneous wireless data connections, and the mobile telephony device switches the media of the call between the wireless data connections depending on the quality of the wireless data connections.

Abstract: An IP telephony system allows a calling party to provide a message that is played to the called party before the called party is connected to the calling party. The message can provide information about the call that helps the called party decide whether to answer the call. In some instances, information provided by the calling party can be used by the IP telephony system to automatically determine how to the handle the call.

Abstract: A system and method for synchronizing the presentation of a video program on multiple display devices makes use of a synchronized content distribution unit that receives a video program from a content provider as well as text, audio and/or video feeds from at least one user. The video program and the text, audio and/or video feeds are combined, and the combined program is then distributed to the display screens. Synchronization information may be encoded in the combined program, and this information may be used by the display screens or video controller associated with the display screens to cause the combined video program to be displayed on all the display screens in a synchronized fashion.

Abstract: Systems and methods of selecting a media path for data packets bearing the media of a telephone call to traverse during a voice over Internet protocol telephone call include testing the call quality of multiple potential media paths immediately before a call is setup. The potential media path with the highest call quality is used as the initial media path for the call. If the call quality of the media path currently in use declines below a threshold value during a call, potential alternate media paths are identified and tested for call quality. If one of the alternate media paths has better call quality than the meida path presently in use, the call is switched to the alternate media path with the highest call quality.

Abstract: Systems and methods of selecting a media path for data packets bearing the media of a telephone call to traverse during a voice over Internet protocol telephone call include testing the call quality of multiple potential media paths immediately before a call is setup. The potential media path with the highest call quality is used as the initial media path for the call. If the call quality of the media path currently in use declines below a threshold value during a call, potential alternate media paths are identified and tested for call quality. If one of the alternate media paths has better call quality than the media path presently in use, the call is switched to the alternate media path with the highest call quality.

Abstract: A method for telephony includes receiving at an Internet telephony service provider a subscriber request to place a call to a telephone number. A cache associated with the internet telephony service provider is queried to check if the cache holds a record for the telephone number. If the cache holds the record, the record is obtained. If the cache does not hold the record, a request is sent to a database server that maintains a database of records associating endpoint user terminal telephone numbers of subscribers with respective packet network addresses of the endpoint user terminal. The call is placed to the endpoint user terminal telephone number via a public switched telephone network whilst the request is sent to the database server to retrieve the packet network address of the endpoint user terminal to which calls to the telephone number should be placed.

Abstract: A method for telephony includes receiving at a facility of a telephone service provider a first subscriber request to place a first call to a specified telephone number. A provider request is sent to a remote server (26), which maintains a database (28) of records associating telephone numbers with respective packet network addresses, for a record (72) indicating a packet network address to which calls to the specified telephone number should be placed. Upon receiving the record from the remote server, the record is stored in a local cache (42) at the facility of the telephone service provider. After storing the record, upon receiving at the facility of the telephone service provider a second subscriber request to place a second call to the specified telephone number, the record is read from the local cache and is used in placing the second call to the packet network address.

Abstract: Systems and methods for conducting a virtual meeting cause a display screen to present meeting participants with a depiction of a virtual meeting room populated with avatars representing the participants. Audio links between the participants allow some or all of the participants to hear what is being said by each of the other participants. Each participant can cause his respective avatar to make gestures that provide non-verbal communications to the other participants. In addition, one or more participants may be able to cause text, images, videos or other presentation materials to be displayed to the other participants on a virtual display screen present in the virtual conference room. Likewise, participants may be able to draw or write on a virtual whiteboard present in the virtual conference room. Participants may also be able to share or send notes to each other, or conduct private instant messaging sessions, audio sessions or video sessions with one or more of the other participants.

Abstract: Systems and methods for conducting a virtual meeting cause a display screen to present meeting participants with a depiction of a virtual meeting room populated with avatars representing the participants. Audio links between the participants allow some or all of the participants to hear what is being said by each of the other participants. Each participant can cause his respective avatar to make gestures that provide non-verbal communications to the other participants. In addition, one or more participants may be able to cause text, images, videos or other presentation materials to be displayed to the other participants on a virtual display screen present in the virtual conference room. Likewise, participants may be able to draw or write on a virtual whiteboard present in the virtual conference room. Participants may also be able to share or send notes to each other, or conduct private instant messaging sessions, audio sessions or video sessions with one or more of the other participants.

Abstract: Systems and methods for conducting a virtual meeting cause a display screen to present meeting participants with a depiction of a virtual meeting room populated with avatars representing the participants. Audio links between the participants allow some or all of the participants to hear what is being said by each of the other participants. Each participant can cause his respective avatar to make gestures that provide non-verbal communications to the other participants. In addition, one or more participants may be able to cause text, images, videos or other presentation materials to be displayed to the other participants on a virtual display screen present in the virtual conference room. Likewise, participants may be able to draw or write on a virtual whiteboard present in the virtual conference room. Participants may also be able to share or send notes to each other, or conduct private instant messaging sessions, audio sessions or video sessions with one or more of the other participants.

Abstract: When a mobile telephony device is conducting a voice over Internet protocol (VOIP) telephone call via a data network, and the mobile telephone device transitions from a first wireless data connection to a second wireless data connection, signaling between the mobile telephone device and a media relay inform the media relay how to address data packets bearing the media of the call after the transition has occurred. In some embodiments, the mobile telephone device establishes multiple simultaneous wireless data connections, and the mobile telephony device switches the media of the call between the wireless data connections depending on the quality of the wireless data connections.

Abstract: Information, such as advertising, is presented to VoIP users via a combination of telephone and data streams during session initiation via an IP phone or a personal computer. A proxy server that receives the call request coordinates with a media server to transmit targeted advertising to the caller during the post dial delay interval. After the advertisement concludes, the call continues normally.

Abstract: Systems and methods of recommending that two people form a link on a social networking system use information drawn from contact lists or address books that are maintained by a social networking system for the two people. The information drawn from the contact lists is compared to information in a cross-reference database maintained by a telephony system to obtain alternate identifiers for the individuals and businesses listed in the contact lists and address books maintained by the social networking system. If some of these alternate identifiers match between the two people, there is a chance that the two people are acquainted, or at least are acquainted with the same people. In that instance, a recommendation that they form a link on the social networking system is issued to one or both parties.