Abstract: A solution for the Network Address Translation (NAT) traversal problem for Real Time Protocol (RTP) is provided, which uses an RTP Proxy (e.g., a Session Border Controller (SBC)), instead of being logically located between the NAT and the Feature Server (FS), but instead, for devices which use a protocol unsupported by the SBC, having these devices first signal the Feature Server, which determines whether and how an RTP proxy should be invoked. An RTP proxy should be invoked by the FS if Both endpoints (e.g., devices) are behind different NATs (or one of the endpoints is behind a NAT and the other is not) and neither of the endpoints are already signaled through an RTP proxy. For example, the SBC is interposed (at least logically) between the Feature Server and other shared components.

Abstract: The solutions offered herein include introducing a mediator in the codec: negotiation process. Rather than having the endpoints negotiate codecs directly, the mediator receives signaling from the endpoints relating to the establishment of a communication session which requires codec negotiation, and influences the selection of a codec based on codec policy criteria which depends on known topology information.

Abstract: A solution for the Network Address Translation (NAT) traversal problem for Real Time Protocol (RTP) is provided, which uses an RTP Proxy (e.g., a Session Border Controller (SBC)), instead of being logically located between the NAT and the Feature Server (FS), but instead, for devices which use a protocol unsupported by the SBC, having these devices first signal the Feature Server, which determines whether and how an RTP proxy should be invoked. An RTP proxy should be invoked by the FS if Both endpoints (e.g., devices) are behind different NATs (or one of the endpoints is behind a NAT and the other is not) and neither of the endpoints are already signaled through an RTP proxy. For example, the SBC is interposed (at least logically) between the Feature Server and other shared components.

Abstract: A repeater for digital satellite television broadcasts wherein the repeater receives digital television signals broadcast from a satellite using one or more antennas mounted on the outside of an aircraft; the repeater corrects for Doppler frequency offset, resulting from the aircraft and/or satellite motion, prior to re-transmission of the broadcast into the interior of the airframe. This correction is a shift of the received signal frequency; the repeater re-transmits the broadcast, in a modulated and coded format, into the inside of an aircraft, the re-transmitted signal is received by multiple users inside the aircraft; the repeated signal is in a modulated and/or coded form and consequently the multiple users of the signal must each have a receiver capable of performing the required demodulation and/or decoding.

Abstract: A dielectric resonator element array (DRA) antenna system and method for using same is disclosed. The dielectric resonator antenna system includes a ground plain, a feed structure, an array of dielectric resonator elements electrically coupled to the feed structure, each dielectric element having a relatively high permittivity, a radome close to or in contact with the array of dielectric resonator elements, an object mounting apparatus for mounting the antenna system on an object, and a beam shaping and steering controller, the beam shaping and steering controller controlling the feed structure to thereby control excitation phases of the dielectric resonator elements.

Abstract: An antenna array especially for use on mobile platforms, which provides the spatial discrimination in selected directions required for such antennas. The shape of the radiation pattern of the antenna array is modified dynamically, such that the gain in the direction of other sources is sufficiently low to meet the desired or required spatial discrimination to avoid any significant interference with the other sources. The pattern is controlled by controlling the amplitude and/or the phase of one or more elements within or outside the antenna array. In this manner reduced gain or nulls can be directed at the potentially interfering sources, which are not being utilized by the antenna array for communications.

Abstract: A dielectric resonator element array (DRA) antenna system that is small, compact, has high gain in the direction of intended communication, minimized interference in unintended directions of communication and a wide bandwidth. The antenna system comprises a ground plane, a feed structure, a beam shaping and steering controller, a mounting apparatus, an array of dielectric resonator elements and a radome that is close to or in contact with the array. The mounting apparatus preferably is configured so as not to appreciably increase the size of the system when mounted. The controller receives and processes information relating to one or more of object latitude, longitude, attitude, direction of travel, intended direction of communication and unintended directions of communication. The controller processes this information and determines excitation phase for the array elements.

Abstract: The present invention provides a dual antenna system where a first antenna element has a metallic surface with openings that are resonant at frequencies other than the operating frequency of a second antenna element. The openings are sized such that the metallic components are relatively transparent at and near resonant frequencies of those openings. According to the present invention, the resonant frequencies of the openings may be the transmitting or receiving frequencies of the second antenna element, or of nearby antennas.

Abstract: A method to control feature interaction and ensure compatibility among disparate service features, resources and terminals of a communications network is provided. Resource devices and terminals access a compatibility message bus via interface agent modules when originating requests or events. The message bus, which could be, for example, an Ethernet link of any length, is accessible to all devices and to one or more compatibility controllers in the computing platform of a PBX or switching office, or in a general computing platform separate from the switch or PBX. A temporary compatibility control module is then constituted, which processes requests and events, by retrieving processing rules stored in a data base to ensure provision of invoked service features in a controlled manner.