Matches 1 - 20 out of 20
Match Document Document Title
6047063 Methods and apparatus for providing an auxiliary communication line  
Methods and apparatus for using and/or switching to an auxiliary communication pathway to increase system reliability and/or reduce maintenance costs is disclosed. One feature is directed to a...
5317561 Method for switching ATM message cell streams having a high bit rate via a switching equipment having a lower bit rate  
In switching equipment, message cells of a message cell stream that has a transport bit rate higher by a multiple than the transmission bit rate of switching elements of the switching equipment are...
EP0219917B1 Switching device with fault correction  
Abstract not available for EP0219917
5072440 Self-routing switching system having dual self-routing switch module network structure  
A self-routing switching system connected between input highways and output highways, includes conversion modules, doubled SRM networks, output modules, and first and second selectors. Normally,...
4843289 Digital control bus system  
Digitally controllable ICs or function blocks in an electronic apparatus are connected through control bus lines, and a switch device is provided for disconnecting one of the digitally controllable...
4737951 Exchange with error correction  
A switching exchange in which data on each incoming line are applied to an encoder which produces redundant code words therefrom. The switching matrix is divided into n sub-switching matrices which...
4695999 Cross-point switch of multiple autonomous planes  
A multi-plane cross-point switching system in which a communication message from a sender is divided into a plurality of data links that are separately connected through autonomous cross-point...
EP0219917A2 Switching device with fault correction.  
Abstract not available for EP0219917
4536870 PCM Switching network with surplus capacity  
A network for selectively switching channels from n incoming PCM links to as many outgoing PCM links comprises two sections of a receiving-side stage with n input terminals each, connected in...
4512011 Duplicated network arrays and control facilities for packet switching  
A communication method and packet switching system in which packets comprising logical addresses and voice/data information are communicated through the system by packet switching networks which...
4462099 Error source excluding data transmission system  
A data transmission system comprising a plurality of terminal units each having at least one input and at least one output connected such that each connected input of a terminal unit is connected...
4276643 Method of and means for routing binary messages through a multinode data-transmission system  
A digital-data-transmission system includes a network formed from a multiplicity of nodes each having at least three pairs of input/output terminals of which one is connected to an associated...
4245342 One-for-n modem control apparatus  
Communications apparatus includes one-for-n modem redundancy for a plurality of typically contiguously disposed modem modules. The modem modules comprise n active units each illustratively...
4241445 Method and apparatus for counting transmission errors in a digital microwave link  
A method of counting transmission errors in a digital microwave link with a demand of commutation onto an emergency channel when the quality of the link becomes deficient, wherein the errors are...
4228535 Dual TDM switching apparatus  
Two identical and interconnected switch matrices are used wherein one is "on-line" and the other is "off-line". If an individual module in the on-line switch fails, an identical module in the...
4160127 Time-slot interchange with protection switching  
Time-slot interchange circuitry for use in a time-division switching system is disclosed having n+1 input interface units and n+1 output interface units to serve n PCM lines. One of each group of...
4100533 Multipoint polling technique  
A multipoint polling system wherein a multipoint switch selectively connects a plurality of remote terminals to a central station in response to remote terminal addresses transmitted on a signaling...
4074077 TST exchange with series-mode space switching stage  
The invention relates to time-division exchanges in which the connection between the subscribers is established successively in time at the same frequency as a sampling of telephone signals. It...
4037054 Circuit arrangement for monitoring PCM couplers  
In an exchange of a telecommunication network, which operates according to pulse code modulation (PCM) techniques, a circuit arrangement is described for monitoring the performance of a plurality...
4009469 Loop communications system with method and apparatus for switch to secondary loop  
This invention relates to a system for communicating between a central station, such as a host processor, and one or more remote stations, such as terminal devices, on a pair of communication...
Matches 1 - 20 out of 20