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Assignee: Southwestern Bell Technology Resources, Inc.


Location: Austin, TX
No. of patents: 9

NumberTitleIssue Date
5995839Private radiotelephone system with enhanced telephone system interface
The personal communication system of the present invention includes one or more mobile stations which operate in conjunction with a Private/Residential Base Station and a Mobile Station Emulator to provide seamless rerouting of existing telephone connecti...
11/30/1999
5974133Method and apparatus for facilitating communication across multiple locations
The multiple location, communications network is provided as an overlay application to, for example, one or more private networks. The network adds increased flexibility to an existing private network system by adding additional features, e.g., abbreviate...
10/26/1999
5835129Multipoint digital video composition and bridging system for video conferencing and other applications
A flexible multipoint composition and bridging system is provided for video signal composition and bridging of a plurality of geographically dispersed locations. The system includes a centrally located bridging unit that receives video, audio and data sig...
11/10/1998
5799073Apparatus and method for recording call related data
An advanced intelligent network application is provided for collecting and recording cumulative call data to a subscriber's telephone number. The subscriber may receive monthly reports regarding incoming telephone traffic with the data formatted according...
08/25/1998
5790828Disk meshing and flexible storage mapping with enhanced flexible caching
A data processing system which includes a processor having a processor memory and a mechanism for specifying an address that corresponds to a processor-requested data block located within another memory to be accessed by the processor. A hierarchical memo...
08/04/1998
5701583Land-based wireless communications system having a scanned directional antenna
A radio communication system is disclosed which comprises a base station for transmitting and receiving signals to and from one or more remote stations. The base station is provided with at least one receive antenna coupled to a base station receiver. The...
12/23/1997
5680446Advanced intelligent network screening
An network screening application is provided for use in an Advanced Intelligent Network (AIN). The network screening application may provide two screening features for a private telecommunications network. One screening feature may screen off-network call...
10/21/1997
5678198System for controlling signal level at both ends of a transmission link, based upon a detected value
The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, characterized as either an analog or digital link. The system includes a pre-processing unit, provided at a first location, that...
10/14/1997
5671385Memory subsystem with disk meshing, controller meshing, and efficient cache buffer lookup
In a data processing system, source block addresses are linearly mapped to virtual linear target disks equal in size to actual physical disks comprised by the long-term storage. Blocks of the virtual linear target disks are then assigned to disk-meshed di...
09/23/1997
 
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