Matches 101 - 119 out of 119 < 1 2 3
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3937895 Circuit arrangement for detecting double connections in digital telecommunication switching systems  
Apparatus is described for detecting undesirable duplications in connections in time division multiplex telecommunication systems, e.g., pulse code modulated telephone systems. The multiplex trunks...
3925620 Method of transfer of switching order information for transmission of PCM words  
A PCM exchange comprises a space stage between a first and a second time stage, and has switching order memories for the control of time and space interchanges arranged in time substages each...
3925621 Digital circuit switched time-space-time switch equipped time division transmission loop system  
This is a TST (Time-Space-Time) digital switching node equipped distributed loop switching telecommunications system with a loop build-out buffer connected in parallel with one switching node in...
3920914 Divided time-division switching network  
A TDM switching network is totally divided into two time-space-time division subnetworks or partially divided into two sub-switches at the space-division switch level. For a communication to be...
3909786 Digital telecommunications switching systems  
A switching system for a digital telecommunications exchange handling data, telex or speech signals in digital form. The switching system comprises a series of stages which may, for example, be a...
3906164 Digital switching networks with feed-back link for alternate routing  
In a two-stage switching network wherein each primary (A) switch has access to each secondary switch over an individual link, the failure of any one link seriously affects accessibility as between...
3894189 Method of operating file gates in an exchange for PCM words  
A method for operating file gates arranged in the space stage of a time-space-time PCM exchange wherein each operation is carried out during one time slot chosen for space interchange of an actual...
3862370 TIME DIVISION ELECTRONIC SWITCHING SYSTEM FOR EXTERNAL HIGHWAYS OF DIFFERENT MULTIPLEXING RATIOS  
A time division electronic switching system operable with a predetermined multiplexing ratio is connected to external highways for transmitting external time division multiplexed pulse signals of...
3818142 DEVICE FOR PRODUCTION OF SWITCHING ORDER INFORMATION FOR TRANSMISSION OF PCM WORDS  
A PCM exchange comprising a space stage arranged between time stages is provided with signal receivers and switching order units connected to the space stage. The signal receivers receive signal...
3812294 BILATERAL TIME DIVISION MULTIPLEX SWITCHING SYSTEM  
A switching network comprising arrays of bilateral crosspoint stores is combined with a plurality of bilateral time slot interchangers connected in links between switching stages to form a complete...
3773980 BILATERAL SWITCHING ARRAY WITH CROSSPOINT STORAGE  
An improved switching array of the type having data storage elements connected at the crosspoints is provided. The switching array has two sets of input highways and two sets of output highways....
3740480 TIME DIVISION MULTIPLEX SWITCHING SYSTEM UTILIZING ALL TIME DIVISION TECHNIQUES  
Time slot interchangers in each of plural input time division multiplex signal paths to a switching network shift input time slot signals to respective operational time slots corresponding to...
3736381 TIME DIVISION SWITCHING SYSTEM  
A toll telephone switching system for switching PCM data among time division multiplex lines is disclosed. The system comprises a symmetrical time-shared space division network and interface...
3673335 SWITCHING OF TIME DIVISION MULTIPLEX LINES AND ANALOG TRUNKS THROUGH TELEPHONE CENTRAL OFFICES  
A telephone switching office is disclosed wherein connections may be established between conventional analog trunks and time division multiplex lines. A plurality of digital trunks are employed...
3458659 NONBLOCKING PULSE CODE MODULATION SYSTEM HAVING STORAGE AND GATING MEANS WITH COMMON CONTROL  
3439124 PCM SWITCHING MATRIX  
3281536 Pcm switching stage and its associated circuits  
3281537 Multiplex switching stage and its associated control circuits  
3066192 Time division multiplex telephone switching system having single and multiple party pre-address and priority check circuitry  
Matches 101 - 119 out of 119 < 1 2 3