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Document Title |
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7532612 |
Transmission timing
A method for transferring data over a communication link from a first unit to a second unit, the link comprising a first portion across which the data is carried by the transmission of data packets...
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7500018 |
Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems
Techniques for discontinuous transmission (DTX) and fast in-band signaling of configuration changes and protocol messages in speech communications systems provide cost efficiency in terms of radio...
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7394985 |
Wavelength access server (WAS) architecture
A wavelength access server (WAS) architecture provides aggregation of traffic streams of diverse data communication protocols as well as provision of wavelength resources in an optical transport...
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7215679 |
Method, apparatus and data structure enabling multiple channel data stream transmission
A method, apparatus and data structure enabling multiple channel data stream transmission by inserting data to be transmitted into portions of a plurality of transport streams nominally including...
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7130309 |
Communication device with dynamic delay compensation and method for communicating voice over a packet-switched network
A device and method for communication of speech packets over a packet-switched network allows for a greater channel reallocation delay. Initial speech packets may be buffered during a channel...
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7110416 |
Method and apparatus for reducing synchronization delay in packet-based voice terminals
Circuitry, embodied in a media subsystem, reproduces a speech or other type of audio signal, and is operable during a time that comfort noise is being generated for storing data from an arriving...
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7110380 |
System, method, and computer program product for sharing bandwidth in a wireless personal area network or a wireless local area network
A system, method, and computer program product for sharing bandwidth by a plurality of devices in a wireless personal area network or a wireless local area network. A media access control protocol...
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7080162 |
Reduced hardware network adapter and communication method
The present invention provides a network interface adapter for connecting a client computer to a computer network that includes a reduced hardware media access controller (MAC) coupled through a...
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7058031 |
Method and apparatus for efficient use of communication resources in a data communication system under overload conditions
In a communication system ( 1400 ) for communication of data, a method and apparatus provide for detecting a request for opening a connection for a user ( 1407 ) for communication of data,...
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7054280 |
Voice communication between a portable communication apparatus and an external terminal
A portable communication apparatus ( 200 ) for radio communication of digital audio data ( 240 ) representing analog voice signals has an asynchronous interface ( 250 ) for exchanging digital...
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6937616 |
Method and apparatus for providing packet based and distributed xDSL communications
A method and apparatus for digital subscriber line (xDSL) communications between one or more digital signal processors (DSPs) and analog front ends (AFEs) each coupled to corresponding subscriber...
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6879583 |
Method and apparatus for transmitting voice data over various types of networks
A method for transmitting voice data over various types of networks wherein user data are transmitted via a transmission link of a circuit-switched network and are distributed to data packets and...
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6721327 |
Delayed packet concealment method and apparatus
A decoder improves delayed packet concealment in a packet network by using two decoder sections. A first decoder section bases its decoding during the concealment phase on erroneous filter states...
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6594507 |
Method for allocating channels
The present invention relates to a mobile communication system comprising a rate adaptation unit (TC) which communicates with a base station system via first data transmission channels (Ater 1...
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6542499 |
PSTN fallback using dial on demand routing scheme
A call fallback scheme is provided in a packet switched network. After receiving incoming calls, a Voice over IP (VoIP) link is established over a packet switched network with a destination...
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6477176 |
Simultaneous transmission of speech and data on a mobile communications system
The invention relates to a method for transmitting speech and data simultaneously on a circuit switched two-way connection of a mobile communications system, which transfers speech and other data...
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6373839 |
Bandwidth biased codec selection system and method
Endpoints, such as clients and gateways, maintain local codec priority lists ( 500 ), receive remote codes priority lists ( 504 ), and maintain common communication attribute priority lists ( 502...
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6310859 |
Packet communications network
Control of a packet communications network in a fixed network used by a mobile communications network is performed. (1) A communication hold mode is set for a user when the traffic volume of the...
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6125120 |
Transmission equipment for an interexchange connection
A compression method and apparatus for a transmission link in a telecommunications network between switching centers each associated with a compression apparatus connected thereto by a number of...
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6041230 |
Transmission method and a cellular radio system
The invention relates to a transmission method and a cellular radio system comprising a base station and a vocoder which communicate with each other via a transmission path and which transmit a...
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5960074 |
Mobile tele-computer network for motion picture, television and tv advertising production
A telecomputer network is described. The network comprises a redundant digital microwave communication system, at least one mobile vehicle, and a wireless local area network (LAN). In one...
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5940405 |
High-speed two-way multiplex data communication system and data communication device used therein
A two-way multiplex data communication system transmits a multiple signal representative of a piece of user's data information, a piece of communication controlling data information or a piece of...
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5870397 |
Method and a system for silence removal in a voice signal transported through a communication network
A method and an apparatus for removing the silence from the digitalized voice signals conveyed through packets or cells switching networks. The silence samples are neither packetized nor sent over...
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5818843 |
E1 compression control method
An N:1 transcoder (12, 40) with a compression data path that includes uncompressed digroup circuits (92, 94, 96, 98, and 100) each receiving N incoming uncompressed signal and extracting a...
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5790532 |
Voice over video communication system
A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a...
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5754554 |
Telephone apparatus for multiplexing digital speech samples and data signals using variable rate speech coding
In a mobile telephone set, a speech coder is provided for converting an analog speech signal to a digital speech signal. A voice activity sensor determining whether the analog speech signal is...
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5754104 |
Antenna alarm detection system
An antenna alarm detection system includes first and second antennas, a transmission section, an antenna switch section, a reflected power detection section, and a comparing section. The...
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5745854 |
Method and apparatus for dynamically adjusting a maximum number of users on a channel utilizing a voice activity factor
In a resource limited communication system having at least one physical channel shared by a plurality of time divided users, a method is provided of dynamically adjusting a maximum number of users...
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5745492 |
Speech information freeze-out control method and equipment in mobile satellite communication system
A speech freeze-out method in a communication system for transmitting speech information, which is sent from public telephone terminals (1) to a control center (5) through voice channels, from the...
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5742773 |
Method and system for audio compression negotiation for multiple channels
Modem-equipped computers which can initiate an audio channel using the modem data connection. The connection is initiated with a new protocol called the voice-over-data protocol. The new protocol...
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5737331 |
Method and apparatus for conveying audio signals using digital packets
A digital telecommunication network (10) provides an audio processor (56) for each call in each external node (14). The audio processor (56) includes a vocoder and additional functions. At a source...
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5666350 |
Apparatus and method for coding excitation parameters in a very low bit rate voice messaging system
An apparatus codes excitation parameters for very low bit rate voice messaging using a method that processes a voice message to generating speech parameters. The speech parameters are separated...
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5625872 |
Method and system for delayed transmission of fast associated control channel messages on a voice channel
A system and method reduces degradation of voice quality due to Fast Associated Control Channel (FACCH) format signaling between a mobile station and a base station on the digital voice channel....
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5625687 |
Arrangement for enhancing the processing of speech signals in digital speech interpolation equipment
A facility is provided in a telecommunications network which causes Digital Speech Interpolation (DSI) apparatus to transmit noise signals toward a destination if the level of the noise signals at...
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5602837 |
Multiplex system for a personal handy phone system
Disclosed is a personal handy phone system subjected to improvements over the prior art system by disposing an ADPCM/PCM converter necessarily required in a base station on an exchange side,...
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5600649 |
Digital simultaneous voice and data modem
A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a...
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5535204 |
Ringdown and ringback signalling for a computer-based multifunction personal communications system
The voice over data component of a personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. This voice over data function...
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5471470 |
Computer-based multifunction personal communications system
A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a...
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5436899 |
High performance digitally multiplexed transmission system
The high performance multiplexed transmission system of this invention is configured by a sound coding unit for coding voice input information by separating it into a core information part for...
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5280532 |
N:1 bit compression apparatus and method
An N:1 data compression system for compressing data on N DS1 trunks carrying 4N channels is disclosed. Waveform encoding circuitry is coupled to the N DS1 trunks for compressing the DS1 data into x...
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5260939 |
Speech transmission method using speech frame interpolation
A speech transmission method utilizes a speech frame length having a time period within which a speech waveform remains substantially steady-state, and the speech frame length is selected to be 1/M...
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5239557 |
Discountinuous CDMA reception
A cellular radio telephone system employs discontinuous transmission and reception of speech signals to conserve receiver processing resources. A frame structure is imposed on digitized speech data...
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5226044 |
Low-rate encoding/digital speech interpolation system
A low-rate encoding/digital speech interpolation (LRE/DSI) system architecture is organized to eliminate the LRE mistracking problem normally associated with DSI-induced speech clipping, to reduce...
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5121385 |
Highly efficient multiplexing system
The period of a sound-existence/sound-silence of a speech signal is detected. Packet data is inserted in a speech time slot during the period of non-existence of sound in the speech signal. A time...
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5065395 |
Rudimentary digital speech interpolation apparatus and method
Rudimentary digital speech interpolation apparatus for compressing data on a plurality of channels is disclosed, which includes circuitry for receiving data bits and control bits for each channel....
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5016247 |
Multihop time assigned speech interpolation (TASI) system for telecommunication networks
A telecommunication system performs multihop TASI over every hop with a single instance of speech activity detection for each voice call. The system utilizes a Time-Space-Time circuit switch...
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4949395 |
Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system
The present invention relates to a cellular mobile radio system. Each cell includes a base station, a plurality of mobile stations and radio channels, for transmitted digital information between...
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4897832 |
Digital speech interpolation system and speech detector
A digital speech interpolation (DSI) system serves multiple PCM channels by multiplexing them to a single PCM signal, detecting the presence of speech on individual channels according to an...
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4890282 |
Mixed mode compression for data transmission
In an integrated digital network with at least three nodes, A, B, and C, a call placed at node A to be transmitted through the network from node A to node B to node C, is compressed in multiple...
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4864561 |
Technique for improved subjective performance in a communication system using attenuated noise-fill
The present invention relates to a method for providing noise fill in a communication system. The method comprises the detecting (16) of active and inactive information signal transmission periods...
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