Matches 51 - 100 out of 120 < 1 2 3 >
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5390178 Communications switching network  
A communications switching network utilizes time-space-time switching nets and 2×2 switches and reconfigurable space switch nets in numerous configurations which place no limitation on the number...
5345441 Hierarchical path hunt for multirate connections  
In a time-space-time switching network that provides connections at a hierarchy of data rates, a path-hunt arrangement effects establishment of a switched connection of a given bandwidth as a...
5329524 TDM circuit-switching arrangement that handles frames of different sizes  
A time-division multiplexed circuit switch (100) handles different-size time-division multiplex frames (30, 40, 50) in a single, shared, time-space-time switching fabric. Both time slot interchange...
5301333 Tree structured variable priority arbitration implementing a round-robin scheduling policy  
An inventive arbiter controls access to a resource in a high speed computer or telecommunications network. The arbiter is capable of performing round-robin scheduling for N requests with P possible...
5136579 Digital communications network with unlimited channel expandability  
A digital communication network (10) with a multiple space storage, time space-time configuration defined by a first, or input, time stage (12), a second, or output, time stage (14) and a...
5056086 Apparatus for providing telephonic mass announcement service and methods for use therein  
Apparatus for a telephone switch, e.g. a tandem switch, for providing a telephonic mass announcement service and methods for use therein in providing passive and/or interactive announcements as...
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...
4899336 Centrally controlled telecommunications exchange system  
In a telecommunications exchange system, consisting of a central section comprising a central switching network and a central coordination processor, and consisting of line trunk groups which are...
4849964 Multistage switching system for switching N1 input channels to N2 output channels  
A switching system for switching-through in time-division multiplex broadcast connections and point-to-point connections. In prior art broadcast switching systems the incoming (transmitter)...
4797589 Dynamically reconfigurable time-space-time digital switch and network  
A dynamically reconfigurable time-space-time (DRTST) switching system for use in conjunction with a high speed transmission media which conveys a plurality of time division multiplex (TDM) channels...
4764918 Telecommunication switching system  
An electronic switching network for use as a transit exchange, interconnects PCM digital trunks, and handles large numbers, e.g. 1,000 inlets and 1,000 outlets of such trunks. The switching network...
4740960 Synchronization arrangement for time multiplexed data scanning circuitry  
Telecommunication switching systems are typically connected by high-speed digital data spans. These spans may commonly be T1 or T2 carriers using DS1 or DS2 data formats, respectively. These...
4718058 Digital switching network for switching signals of different bit rates  
Digital switching network for switching through subrate channels. The multiplexed subscriber's channels contain eight-bit words, each bit of which can form part of another signal. The number of...
4621357 Time division switching system control arrangement and method  
A method and arrangement for controlling a time division switching system including a time multiplexed switch is disclosed. The time division switching system comprises a plurality of time-slot...
4581732 Time-space-time switching network using a closed-loop link  
A switching network for selectively connecting at least one input time-division channel on an input link (IL) to at least one output time-division channel on an output link (OL). The network is...
4558444 Switching system having selectively interconnected remote switching modules  
An arrangement comprising a host switching system and a number of remote switching modules which are selectively interconnected by a time-multiplexed switch such that voice and data traffic as well...
4550404 Switching system having remote switching capability  
An arrangement comprising a host switching system and a number of remote switching modules which are directly interconnected such that voice and data traffic as well as control information can be...
4532624 Parity checking arrangement for a remote switching unit network  
Circuitry for validating the integrity of PCM data transmitted through a digital switching network is shown. The space stage of the switching system requires that appropriate data validity be...
4525831 Interface arrangement for buffering communication information between a transmitting and receiving stage of a time-space-time digital switching system  
An interface arrangement is shown compensating for timing delays during transmission of communication information between a transmitting and receiving stage of a T-S-T digital switching system. The...
4520477 Control information communication arrangement for a time division switching system  
A time division switching system having a time-space-time architecture is disclosed. The time-multiplexed communication links of this system comprise a plurality of channels certain of which are...
4514842 T-S-T-S-T Digital switching network  
A time-space-time-space-time switching network is composed of a subscriber connected to a remote unit network having a time and space switching stage. The subscriber is then connected to a central...
4509168 Digital remote switching unit  
A remote switching unit which serves a large digital switching system is shown. The remote switching unit is CPU controlled and interconnects local subscribers to the large switching system....
4509169 Dual rail network for a remote switching unit  
A time-space-time switching network (for local to local traffic), a time-space or a space-time switching network portion (for local to remote traffic) is shown for a small remotely located...
4507780 Digital span frame detection circuit  
In a telecommunications switching system, which has a switching network connected to a number of asynchronous digital spans, a digital span frame detection circuit continuously monitors the framing...
4495615 Method and device for controlling a switching network  
Method and device for controlling a TST-switching network. The control device (5) controls the network in such a way that in one frame period in each of the λ internal time slots the (n x...
4480330 Arrangement for digital tone distribution  
An arrangement for the distribution of digital service tones in a distributed processor digital switching network is shown. These service tones are distributed between the time stages of the...
4472798 Telecommunication path substitution arrangement  
A time division switching system having distributed control processors is disclosed. The switching system includes time-slot interchange units having associated subscriber sets and conference...
4468765 Electronic telephone exchanges and optical fiber links for use therein  
An electronic telephone exchange of the type employing time-space-time switching, has an optical fiber data link connecting the space and time switches. In order to meet the design requirements for...
4446554 Arrangement for multiple custom calling  
The arrangement described herein provides for simple control and minimal program impact of a central office switching system for interfacing multiple custom calls. This arrangement employs a few...
4365330 Channel zero switching arrangements for digital telecommunication exchanges  
It is an emerging international telecommunications requirement that all 32 channels of the p.c.m. multiplex must be switchable. The switching of channel zero relates to the "spare bits" not defined...
4320501 Multiplex space switch  
The space switch has an inlet series to parallel converter (1) arranged to take sequential data from the i-th time slot of each of a plurality of synchronized inlet multiplexes and apply them...
4296492 Continuity verification arrangement  
A time division switching system having distributed control processors is disclosed. The switching system includes time-slot interchange units having associated subscriber sets and a time-shared...
4254498 Time division telephone switching systems  
The telephone switching system comprises a plurality of speech path units, a juncture switch unit for interconnecting the speech path units, a central processing unit for controlling the speech...
4245339 Telecommunication switching network having a multistage reversed trunking scheme  
The switching network having a reversed trunking scheme of a PCM-(pulse code modulated -) exchange is formed by a first (time division) switching stage (A) consisting of individual switching groups...
4218588 Digital signal switching system  
This invention relates to a switching system for time-division multiplexed PCM channels. The system possesses essentially an incoming time-division switching device, a space-division switching...
4186276 PCM TDM switching network  
A PCM TDM switching network has a time-space-time structure composed of switch-through units which, being interlaced and released on a time basis, each operate a plurality of TDM transmission lines...
4178483 Time-division switching telephone exchange comprising a service signal sender  
Disclosed is a device for sending a plurality of categories of signalling data over time-multiplexed channels, said device consisting of groups of circuits assigned to various categories of data...
4172214 Integrated message accounting system  
An integrated message accounting system for use in a telephone system operating in time frames each consisting of a plurality of time slots. The system includes line groups each having a number of...
4146748 Switching arrangement for pulse code modulation time division switching systems  
A switching arrangement for pulse code modulation (PCM) time division multiplex telecommunication switching system is described. The frame storages for incoming and outgoing directions of...
4142068 Time-division and spatial connection network  
The invention relates to the connection networks used for switching digital signals, more especially telephonic PCM signals. It consists in organizing the spatial stage of a network of the TST type...
4131762 Buffer storage assignment arrangement for time-division switching systems  
A time-division switching system having a space-division network with a plurality of input terminals, each uniquely associated with a first buffer memory, and a plurality of output terminals, each...
4081611 Coupling network for time-division telecommunication system  
A coupling network at the junction of several multichannel TDM/PCM links comprises a pair of switching networks each including a set of input group units receiving incoming messages from respective...
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...
4071703 Time slot interchanger  
A time slot interchanger for connecting data samples between locations in a telephone system, including first and second data memories for storing and transmitting data samples, a number of cross...
4060698 Digital switching center  
A switching center having a plurality of sets of buffer stores for connecting the channels of a plurality of pulse code modulated signal systems to the inputs of a multiplexer in which there is...
4048445 Method for through connection check in digital data system  
A digital data switch of the time-space-time (TST) type for switching pulse code modulated (PCM) data is disclosed. The switch combines a parity bit with each PCM word being switched in a...
4046963 Times slot switching  
A time slot association arrangement for a high quality connection in a time multiplex system. An input time slot reserved for high quality lines is associated with an output time slot. Samples...
4035584 Space division network for time-division switching systems  
A high-capacity, low-blocking time-division switching system including a three-stage space-division network is disclosed. In order to achieve high capacity and low blocking the space-division...
4001781 Electronic switching element  
A space division switching network having a plurality of stages is disclosed for use as part of a time-space-time division switching system. The network employs MOS technology with standard printed...
3991276 Time-space-time division switching network  
In a large time-space-time division switching network, particularly one employing a multistage space-division switch, one time-division elementary time is too brief to enable transmission of...
Matches 51 - 100 out of 120 < 1 2 3 >