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| Number | Title | Issue Date |
| 6584111 | ABR flow control using single bit congestion indication and wavelet transform filtering A flow control system and methodology controls and avoids congestion in an Asynchronous Transfer Mode (ATM) network. The congestion state of a network switch is determined based on incoming Available Bit Rate (ABR) traffic, Constant Bit Rate (CBR) traffic... | 06/24/2003 |
| 6252887 | Cell to frame conversion management A method and apparatus is disclosed for providing an interworking function to interface a frame relay LAN to an ATM network. Data from a broadband packet switched data data communications network which uses data packets of a fixed size is transferred to a... | 06/26/2001 |
| 6233610 | Communications network having management system architecture supporting reuse A communications network, eg a distributed network, comprises a plurality of distributed physical resources in the form of components, assemblies of components, and systems based on components and composites. A network management system of such a network ... | 05/15/2001 |
| 6178232 | Method and system for providing enhanced caller identification A method and system provide enhanced caller identification information to a called party. The system determines whether or not standard caller identification information associated with a calling party can be provided to the called party. The system prefe... | 01/23/2001 |
| 6083843 | Method of manufacturing planar lightwave circuits The present invention is an improved method of pigtailing of high-density Wavelength Division Multiplex (WDM) components, achieved by etching silicon V-grooves for locating the fibres after completion of the PLC device fabrication processes. This avoids t... | 07/04/2000 |
| 6055433 | Data processing system and method for balancing a load in a communications network A data processing system implements a load balancing methodology which recognizes the effects that multiple, mobile subscribers have within a wireless communications network. During execution of this load balancing methodology, a rehoming operation is exe... | 04/25/2000 |
| 5991389 | Programmable service architecture for call control processing An apparatus and method for providing a telephone operating company with the ability to rapidly deploy advanced services into a public switched telephone network includes a programmable switch matrix, a service control unit (SCU), and a media resource uni... | 11/23/1999 |
| 5974206 | Dispersion compensation with low polarization mode dispersion A dispersion compensator exhibiting low polarisation mode dispersion is constructed from a polarisation beam-splitter, a π/4 rotation Faraday rotator, and a matched pair of polarisation maintaining fibres provided with a matched pair of chirped Bragg ref... | 10/26/1999 |
| 5945261 | Creation of Bragg reflective gratings in waveguides A method of avoiding unwanted phase discontinuities between adjacent sections of a long Bragg grating written section-by-section in an optical fibre uses masks with alignment parts additional to their writing parts. Each alignment part is a replica of a p... | 08/31/1999 |
| 5940471 | Method and apparatus for obtaining feedback regarding network services A method and apparatus for obtaining real-time, call by call, feedback from customers as to their perceived quality of network services may be accomplished after a communication, via a network connection between a calling party and at least one called par... | 08/17/1999 |
| 5917627 | Optical TDM transmission system In an optical TDM transmission system in which a set of N tributary channels at one bit rate are multiplexed on to a single multiplexed channel at N times the bit rate of the tributary channels, an amplitude modulation with a fundamental frequency matched... | 06/29/1999 |
| 5917824 | Communications system An ATM communications system incorporates both broadband and narrowband services. A plurality of channels are adapted into groups, each group comprising a virtual circuit for transmission purposes. Each group is subsequently readapted back to individual c... | 06/29/1999 |
| 5912949 | Voice-dialing system using both spoken names and initials in recognition A system for dialing a telephone by voice receives from a user a spoken name corresponding to a telephone number that the user desires to call and at least one initial. The systems uses both forms of speech information to retrieve a stored telephone numbe... | 06/15/1999 |
| 5909648 | Network interface and method for providing complete reception of data A network interface terminates communication between a disconnecting party (i.e., requesting a disconnect from the network interface) and a disconnected party in communication with the disconnecting party. The disconnecting and disconnected parties are co... | 06/01/1999 |
| 5904491 | Planar waveguides A cladding layer on the core of an optical waveguide is subjected to a rapid thermal annealing process preferably either: in a multi-stage furnace in which the waveguide substrate can be transported rapidly on a carriage between stages at different temper... | 05/18/1999 |
| 5905789 | Call-forwarding system using adaptive model of user behavior Subscribers to a personal telephone number service can receive calls placed to telephone numbers associated with an individual rather than a physical location or telephone line. A subscriber predefines a set of telephone numbers for telephones at location... | 05/18/1999 |
| 5896568 | Wireless architecture having redistributed access functions A wireless access architecture, having redistributed wireless access functions, comprises a plurality of cell sites connected to a main switching point. The cell sites communicate with cellular users within their respective cell site areas and comprise a ... | 04/20/1999 |
| 5886984 | Method and system for service capacity calculation for multimedia services under aggregate traffic conditions A method and system are provided for calculating the total service capacity for multimedia traffic under aggregate traffic conditions within a shared transmission medium, such as an ATM network. A total number of different types of telecommunication traff... | 03/23/1999 |
| 5883819 | Method and system for quality of service assessment for multimedia traffic under aggregate traffic conditions A method and system for assessing quality of service for multimedia traffic under aggregate traffic conditions in a shared transmission network, such as an ATM network. A total number of different traffic services as well as a maximum number of sources fo... | 03/16/1999 |
| 5884177 | Cellular communication system and method providing improved handoff capability A cellular communication system and method providing improved handoff capability which reduces muting during handoffs. During handoffs, the system simultaneously monitors received signals from both the serving cellsite on a first channel and the target ce... | 03/16/1999 |
| 5881369 | Dual mode transceiver A dual mode transceiver architecture suitable for adaptation in either a handset or a base station and capable of operating in both Frequency Division Duplex (FDD) mode or in Time Division Duplexing (TDD) mode is disclosed. Such a transceiver has an up co... | 03/09/1999 |
| 5880837 | Eye measurement of optical signals by optical sampling A pulsed optical signal (13) of a network (23) is monitored to obtain eye measurement data as a means of obtaining an indication of signal degradation. Optical sampling of the optical signal is effected by means of an interferometer (2) in which sampling ... | 03/09/1999 |
| 5878122 | Long distance service bureau A long distance service bureau assists subscribers in selecting a long distance carrier for a long distance, or tariff, call. The long distance service bureau includes a rate table memory and a service logic element. The rate table memory stores rate data... | 03/02/1999 |
| 5870394 | Method and apparatus for reassembly of data packets into messages in an asynchronous transfer mode communications system An apparatus for receiving messages defined by data packets having respective header and payload portions where each header portion includes a channel representation regarding a channel associated with the data packet and an end of message representation ... | 02/09/1999 |
| 5867787 | Overload control for an integrated MSC/HLR switch An integrated MSC/HLR switch accommodates overloads by throttling peripherals during MSC overload conditions, and halting TCAP messages and throttling peripherals during HLR overload conditions.... | 02/02/1999 |
| 5862477 | Topology verification process for controlling a personal communication services system A topology verification process for controlling a Personal Communication Services (PCS) system which includes a plurality of Cordless Fixed Parts (CFP)s. The process includes mapping the spatial relationships of the CFPs utilizing Received Signal Strength... | 01/19/1999 |
| 5862481 | Inter-technology roaming proxy An interworking proxy is coupled to first and second mobile switching systems and translates between first and second management protocols used by the first and second systems, respectively. The first system requests service for a mobile user using the fi... | 01/19/1999 |
| 5857020 | Timed availability of secured content provisioned on a storage medium A service methodology based on distribution of secured content, such as, movies, music, games, information and the like, whereby revenue may be generated for premier and pay-per-use access to the secured content. The service is manifested by the combinati... | 01/05/1999 |
| 5828662 | Medium access control scheme for data transmission on code division multiple access (CDMA) wireless systems A synchronous discontinuous transmission medium access control (SDTX-MAC) method and apparatus for more efficiently using existing uplink channels by sharing these uplink channels between multiple terminals engaged in bursty data transmission. This is acc... | 10/27/1998 |
| 5815813 | Multipath tolerant cellular communication system and method A method for deploying a PCS system wherein radio transceivers are deployed at spacings which correspond to a diameter of a first Fresnel zone and set output powers of the transceivers to define cells which correspond to the first Fresnel zone of the tran... | 09/29/1998 |
| 5812636 | System and method for faulty mobile unit isolation A wireless network, having a plurality of mobile units operating in a cell of the wireless network, isolates a faulty mobile unit that jams the control channel thereby preventing communication by the other mobile units in the cell. A system and method for... | 09/22/1998 |
| 5668862 | Method and apparatus for providing user controlled call management services A method of providing call screening to a subscriber of personal communication services facilitates the screening of incoming calls by associating the number dialed by a calling party with a function or role of the dialed number. This function or role is ... | 09/16/1997 |
| 5561843 | Mobile radio communications system A mobile communications system accommodating both expanded spectrum (ES) mobiles and non-expanded spectrum (NES) mobiles incorporates a first set of (ES) channels and a second set of (NES) channels. A proportion of the channel requests from ES mobiles are... | 10/01/1996 |
| 5559523 | Layered antenna A layered antenna is disclosed having at least one radiating element comprising a pair of colinear probes together forming a dipole and a distribution network therefor formed as a single printed conductive pattern layer, a separate metallic layer spaced a... | 09/24/1996 |
| 5513030 | Optical pulse retiming and reshaping circuit An optical pulse retiming and reshaping circuit for soliton transmission in a transmission system with distributed amplifiers transmits the pulses through an optical modulator, uses a slow photodiode to determine the mean power transmitted (or intercepted... | 04/30/1996 |
| 5506869 | Methods and apparatus for estimating carrier-to-interference ratios at cellular radio base stations In methods and apparatus for estimating carrier-to-interference ratios of signals transmitted between cellular radio base stations and mobile units, a SAT signal is transmitted from a base station to a mobile unit served by that base station. The mobile u... | 04/09/1996 |
| 5495583 | Voice bus for a computer backplane A voice bus on a computer backplane provides point-to-point connection between a plurality of slots on the backplane to a particular slot. Connection from the plurality of slots is provided by third connectors which lie between first and second connectors... | 02/27/1996 |
| 5488679 | Polarization independent wavelength tunable filter based on birefringence compensation A polarization independent wavelength tunable filter in the form of a dual-waveguide directional coupler. The conditions necessary to achieve coupling of a selected wavelength including both TE and TM polarization modes from one waveguide to a second wave... | 01/30/1996 |
| 5483195 | Second generation low noise microwave voltage controlled oscillator A low noise linear amplifier and a microwave voltage controlled oscillator constructed from such amplifier. Each amplifier within the VCO utilizes a ratioed transistor configuration to generate a linear output over a wide range of inputs. Output current f... | 01/09/1996 |
| 5483547 | Semiconductor laser structure for improved stability of the threshold current with respect to changes in the ambient temperature A Type II heterojunction formed of semiconductor material which normally forms a Type I heterojunction. The Type II heterojunction is created by using a carefully chosen stack of epitaxial semiconductor materials with modifications to the band structure t... | 01/09/1996 |
