Abstract: The voice signaling gateway (10) converts signaling and bearer traffic information between iDEN network (20) and various other networks (30–60). The voice signaling gateway includes a signaling portion (14) and a bearer traffic portion (12). The voice signaling gateway interfaces with any networks which support session initiation protocol (SIP). Further, the voice signaling gateway is capable of. interworking with both 3G and 2G type networks.

Abstract: An arrangement for compressing (20) and uncompressing (40) system set up messages between a client and a server employing Session Initiation Protocol transmits a template (200) between client (10) and server (30). A template is pre-placed (78) by clients or servers with other clients or servers. During execution time when a client requests services by connecting to a server only a minimal template (106) is transmitted from client to server. The server then reconstructs (40) the original uncompressed message.

Abstract: The voice signaling gateway (10) provides group call and call back services among iDEN network (20) users (21) and a number of other various networks (30-60) users (31-62). The voice signaling gateway has packet data interface (17) and web interface (16) In an alternate embodiment of the invention, an integrated applications server (70) is added to the voice signaling gateway (100) to provide group call services. The integrated applications server has the functions for supporting group calls which were within the voice signaling gateway (10) and forms a stand-alone special feature system.

Abstract: The voice signaling gateway (10) provides group call and call back services among iDEN network (20) users (21) and a number of other various networks (30-60) users (31-62). The voice signaling gateway has packet data interface (17) and web interface (16) In an alternate embodiment of the invention, an integrated applications server (70) is added to the voice signaling gateway (100) to provide group call services. The integrated applications server has the functions for supporting group calls which were within the voice signaling gateway (10) and forms a stand-alone special feature system.

Abstract: The voice signaling gateway (10) converts signaling and bearer traffic information between iDEN network (20) and various other networks (30-60). The voice signaling gateway includes a signaling portion (14) and a bearer traffic portion (12). The voice signaling gateway interfaces with any networks which support session initiation protocol (SIP). Further, the voice signaling gateway is capable of. interworking with both 3G and 2G type networks.

Abstract: An arrangement for compressing (20) and uncompressing (40) system set up messages between a client and a server employing Session Initiation Protocol transmits a template (200) between client (10) and server (30). A template is pre-placed (78) by clients or servers with other clients or servers. During execution time when a client requests services by connecting to a server only a minimal template (106) is transmitted from client to server. The server then reconstructs (40) the original uncompressed message.

Abstract: A method (300, FIG. 3) controls CU (140, FIGS. 1, 6) hand-off in a non-geostationary orbit (NSGO) satellite system (100, FIG. 1) without consuming large amounts of bandwidth or satellite processing power. Using method (300), a network control facility (NCF) (130, FIGS. 1, 5) divides the earth (102, FIG. 2) into suitable regions 200 (FIG. 2), or geographical areas of the earth sized so that all of the CUs (140, 142, 144, FIG. 1) within a region (200) can be handed-off as a group rather than handling each station individually. When it is determined through the method (300) that it is time to hand-off communications in a particular region, all CUs within that region are directed to effectuate a hand-off at substantially the same time.

Abstract: A secure communication hub (10) relays local communications between low probability of intercept (LPI) user radio equipment (68) and provides a secure interface with a command center (58) through a non-geostationary commercial satellite communication system. The secure communication hub (10) includes different radio interface units (12) for communicating different data formats with the (LPI) user radio equipment (68). Encryption and decryption circuitry (18) provides for different security levels and different keys for the (LPI) user radio equipment. Links with the satellite system are secured using encryption.

Abstract: A communication system (10) has multiple satellites (20) communicating with ground stations (30) and with base stations (40). The satellites (20) are in non-geosynchronous orbit around the earth (52). A first ground station (30) transmits a data packet to a satellite (20). The data packet includes a sector number which represents an area on the earth (52) where the destination ground station (31) is located. The satellite (20) transmits the data packet to another satellite (20) if the satellite (20) is not serving an area identified by the sector number. This step is repeated until the data packet reaches a most likely satellite (20) that is most likely to be serving the area identified by the sector number. The most likely satellite (20) transmits the data packet to the destination ground station (31) if it is still serving the area identified by the sector number.

Abstract: A message processing center (140) is used in a global message delivery system. Message processing center (140) uses at least one GEO satellite (130) and at least one Non-GEO satellite (120) to delivers messages (pages) to a number of ground stations (110) located at various locations on the surface of the earth. Message processing center (140) determines loading for at least one GEO satellite (130) and at least one Non-GEO satellite (120). Message processing center (140) determines available capacity for at least one GEO satellite (130) and at least one Non-GEO satellite (120). Message processing center (140) uses a number of criteria to optimize the delivery of the message data.

Abstract: A fast pattern correlator and method comprising received bitstream data blocks split into estimation blocks and correlation blocks. Correlation blocks are extracted and compared to an expected pattern using a correlation part starting location estimator and correlator. The number of bit errors resulting is compared to a predetermined maximum in a threshold comparator. Extracting the correlation blocks includes indexing consecutive estimation blocks using an estimation part correlation table and predicting consistent correlation block starting locations. The correlation blocks are correlated with the expected pattern to produce an exclusive-OR result, which, used with a bit-error table, can be used to find a number of bit errors in the correlation.

Abstract: A data locking system which modifies data in accordance with a renewable key variable derived from the exclusive ORing of a pseudorandom combination number from an external source means with an altered key variable.

Abstract: An operational function checking method and device for a microprocessor, which uses four circuits to verify that a microprocessor and processing system are operating properly.