Abstract: A digital arrangement for selecting a channel coefficient and DC estimate comprises a demultiplexer receiving a digital input signal splitting the digital input signal into a first and second signal, a first joint detection unit receiving the first signal generating a first channel coefficient and DC estimate, a second joint detection unit receiving the second signal generating a second channel coefficient and DC estimate, a first and second error determination unit receiving the first and second channel coefficients and DC estimates, respectively for generating a first and second error signal, a decision unit receiving the first and second error signals generating a control signal, and a selection unit controlled by the control signal for selecting the first or second channel coefficient and DC estimate.
Type:
Grant
Filed:
June 14, 2002
Date of Patent:
September 11, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Thomas Klingenbrunn, Lichung Chu, Antoine J. Rouphael, Benny Veilgaard
Abstract: The invention provides users of either a unified messaging mailbox or simple plain text storage mailbox, with media and device sensitive methods and apparatus to convert messages from one medium to another (when necessary) taking into account the type of target device (for example, cell phone, PDA, pager, etc.), being used to access a stored message Additionally, the invention provides methods and apparatus for determining target device type and for summarizing message content based on target device type.
Type:
Grant
Filed:
August 2, 2001
Date of Patent:
August 21, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Christoph A. Aktas, John W. Yates, Phillip C. Meredith
Abstract: Embodiments provide a system, method, apparatus, means, and computer program code that allow multiple annotations to a document to be created and that distinguish between the annotations made by different people. The people may view documents, exchange ideas and messages, etc. via a server or conference/collaboration system at different times and/or without being in direct communication with each other. In such an off-line collaboration mode, the people may want to add listen to, view, or add annotations regarding one or more documents. The methods and systems described herein allow users to follow the trail of annotations regarding a document and to distinguish between the voice or other audible annotations created by other people.
Abstract: Embodiments of the present invention provide a system, method, apparatus, means, and computer program code for facilitating or providing a back-up capability in a communication system and for improving availability and reliability of a distributed communication system. Switch over occurs from a main server to a stand-by server for supporting or facilitating calls having traffic routed across an IP network when the main server is disrupted or becomes unavailable. The main server initiates one or more signals provided to the stand-by server that inform the stand-by server of availability of the main server. When the stand-by server does not receive a designated number of the signals, or the main server fails to respond to a request or inquiry from the stand-by server regarding the signal, the stand-by server may initiate providing support for the calls previously supported by the main server and request call state information at the time of switch over from the main server to the stand-by server.
Abstract: A call processing system includes an access gateway that has a local switching unit. The access gateway, in operation, provides access to voice signals and data signals. The call processing system also includes a call feature server that has a host interface platform configured to connect to the access gateway through a network. The call feature server, in operation, provides call control functionality to the local switching unit. The call feature server is configured to provide bearer control signals through a packet network to establish a bearer channel.
Type:
Grant
Filed:
September 30, 2002
Date of Patent:
August 14, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Amruth Laxman, Jack Bloch, Van Phung, Robert S. Stockdale, Salim Saba, Nicholas Cosmidis
Abstract: A system, method, apparatus, means, and computer program code for determining a location of a device connected to a network. According to some embodiments of the present invention, a device, such as an IP enabled or compliant telephone, may receive, detect, or otherwise actively or passively determine a location identifier. The location identifier may be associated with a geographic location of the device. The device may then provide data indicative of the location identifier to another device, such as a network manager device, server, computer, etc. In some embodiments, the device may determine its geographic location after receiving a request for data indicative of its geographic location. In other embodiments, the device may provide data indicative of its geographic location each time it receives, detects or otherwise determines its geographic location.
Abstract: A telecommunications system includes a network (102) and a multimedia server (104) operably coupled to the network. The multimedia server (104) is adapted to manage a multimedia conference and includes a memory (103) for storing selectable portions of the multimedia conference. The system further includes one or more client devices (122) operably coupled to the network and adapted to set recording cues for choosing portions of said multimedia conference for playback. The multimedia server or clients may include a voice recognition system (216) for transcribing audio portions of the conference. The voice recognition system may further be used to detect instances of the recording cues. In addition, in certain embodiments, the system provides for a moderator or participants to the conference an ability to adjust relevance probabilities generated upon recognition of the cues.
Abstract: A ToL/PBX system is provided whereby a single policy may be enforced for both TFA (telephony feature access) and ToL (telephony over LAN) users by making the H.323 gatekeeper (103) aware of those TFA connectors so as to accurately allocate the remaining available bandwidth. According to one embodiment of the invention, the H.323 gatekeeper (103) is notified whenever a TFA call is being made or received.
Type:
Grant
Filed:
November 9, 1998
Date of Patent:
July 17, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Shmuel Shaffer, William J. Beyda, Rudolph Bitzinger
Abstract: During voice-over-Internet-protocol calls, data are gathered about packet loss on the path over the IP network. An algorithm (in the preferred embodiment, the Sliding Window Exponential Average Algorithm) is used to evaluate the packet loss. The Sliding Window Exponential Average Algorithm allows for past performance to be considered along with current performance. If the resulting evaluation fails to meet predetermined criteria, the path over the IP network is blocked and calls are routed over an alternative.
Type:
Grant
Filed:
February 7, 2001
Date of Patent:
June 12, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Mark Flanagan, Kristin Butcher, David Richardson, Kenton Cross
Abstract: A method for avoiding interference in a wireless telecommunication system is provided. The method includes providing communication between a first and second component at an initial frequency. A plurality of successive line quality indicators is determined at a line quality monitor of the first component. Consecutive line quality indicators are summed over a predetermined time to determine a slow hop count. A determination is made as to whether the slow hop count is greater than a slow hop threshold. A determination is made as to whether to provide communication with the first component at a second frequency when the slow hop count is greater than the slow hop threshold. This determination is based on a power level of the second component and a communication strength received from the second component at the first component. A signal is communicated from the first component to the second component requesting the second component to provide communication at the second frequency.
Type:
Grant
Filed:
June 18, 2001
Date of Patent:
May 29, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Uwe Sydon, Juergen Kockmann, Paulus Sastrodjojo, Sheng Guan
Abstract: A telecommunications system according to an embodiment of the present invention includes a wireless device (30-150) including a positioning controller (504) and a communications controller (502); and an administrative device (30-152) for receiving alerts from said wireless communication device via said communications controller when said positioning controller determines that said wireless device is outside a predetermined geographic range, route, or daily routine.
Abstract: A Java based report generator for creating advanced graphics and text documents in Rich Text Format (RTF) is disclosed. An application program may generate a RTF document in one or multiple files using the present invention to produce displays and reports that are more complex than can be produced using standard Java. The provided class definitions allows a combination of text or graphics to be generated with flexible controls for general formatting and positioning of the application data and header information. The documents can be seen from several operating systems. The report generator models the application data in a tree structure and accepts a wide variety of formatting controls to produce drawings, text boxes, application data, paragraph format controls, etc.
Abstract: A communications network, method and computer program product for managing network calls. Calls between mobile stations at base transceiver stations (BTS), each connected to a different base station controller (BSC) in a different switching sub-domain are passed between BSCs over a dedicated line between endpoints. Call linkage for the calls pass in call context objects separate from the calls and need not pass in a signaling channel with the calls.
Abstract: A hand-held communication device provides navigation key-based predictive text entry. The hand-held communication device includes a housing generally sized to be held in a human hand having a display disposed for displaying characters selectable for entry in a character position of a text string being entered and a navigation key assembly for scrolling through and selecting from the characters displayed by the display. The characters displayed by the display during text entry are arranged according to the probability of selection of each character for entry in the character position so that the character with the highest probability of selection is selected with a single input from the navigation key assembly.
Abstract: A telecommunications system includes a switch having a controller implementing software to control switching operation and a memory for storing a database of software upgrade risk factors. The software upgrade risk factors define whether a software upgrade is to be attended by an on-site technician or by a remote monitor. The system further allows for downloading to the switch a software upgrade for the controller if a software upgrade risk factor for that software upgrade has a predetermined value.
Abstract: A distributed communication system that is capable of providing emergency call diversion during an event such as a power outage, network or sub-network failure, site closure, or the like, allows devices within the system affected by the event to rapidly inform one another that it is necessary to enter a call diversion state or mode during the duration of the outage. In this manner, calls may be diverted from different points within the network, or with different diversion behaviors as necessary.
Abstract: A telecommunications device includes a positioning controller (504) adapted to determine positioning information for said telecommunications device; and a wireless communications controller (502) adapted to receive said positioning information from said positioning controller and cause said positioning information to be transmitted to an associated administration device (104/152; 2-122) when said telecommunications device is determined to be out of a predetermined range.
Abstract: A communications network with callback completion to public network stations. An enterprise private network (EPN) includes a communications server, e.g., a private branch exchange (PBX) managing communications with communications devices located at EPN stations and is connected to a public communications network. A call completion (CC) server connected through a Parlay Gateway to the public communications network manages callback requests from connected communications devices to public communications network stations. Call completion to busy subscriber (CCBS) and call completion on no reply (CCNR) services are thus made available from the EPN to the public network or networks including a mixture of public and private telephones.
Type:
Grant
Filed:
March 10, 2003
Date of Patent:
April 10, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Leroy Edwin Gilbert, Robert W. Callaghan
Abstract: The invention provides the user of a unified messaging mailbox with efficient, intelligent, media and device sensitive methods and apparatus to access and process (e.g., read, listen, forward, and search) messages. The invention introduces media conversion capabilities to selectively treat multimedia messages and message attachments so that they can be efficiently handled by mobile devices like PDAs (Personal Digital Assistants), pagers, or phone devices (with or without a text display feature). Furthermore, the invention introduces message content analysis capabilities that will recognize linguistic relationships between messages regardless of the media type. The invention also describes the ability to present these linguistic relationships along with the standard messaging relationships (Message arrival time, subject, sender, etc.). Still further, the invention introduces a message referencing option that allows simpler message selection from certain devices.
Type:
Grant
Filed:
May 22, 2001
Date of Patent:
April 3, 2007
Assignee:
Siemens Communications, Inc.
Inventors:
Christoph A. Aktas, John W. Yates, Phillip C. Meredith
Abstract: In an isochronous telecommunications system sending packets over two routes in a network, a server of the network compares overall transmission delay between the routes. If the new route is faster, a server buffers cells on the new route until the last cell on the old route is delivered. Then the first cell from the new route is delivered at the old delay and subsequent new route cells are delivered with the same delay. If the old route is faster, a server identifies the type of transmission; if it is voice, a signal is inserted to alert the receiver of delay, and if the transmission is video, the system resends the last frame from the old route until frames from the new route arrive.