PL131069B1 - Expanded linking equipment,especially for telephone exchange - Google Patents

Description

* ***** * ***** 1 Int. Cl.3 H04Q 3/52 Inventors: Kenneth Frank Giesken, John Michael Cotton Patent holder: International Standard Electric Corporation, New York (United States of America) Switching device extensive, especially for a telephone exchange. The subject of the invention is an extensive connection device, especially for a telephone exchange, and in particular a multiple connection transmission device with spatial and temporal division, used to implement a continuously built connection device in telephone exchange, in a privately connected PBX. from the city, telephone network, in a link reducer, in a data transmission system, or in any other device in which many interconnections of terminals are required.' Known time-division transmission switching devices use time-slot exchange systems, or space-interconnection systems, using time-space division interconnections, usually two of the former systems and one of the latter systems, or two of these last arrangements and one of these first arrangements. Qpis, United States Patent No. 31770805 discloses a time interval exchange system. United States Patent No. 3 96i3 OT2 discloses a multi-stage switching device. These known switching devices are usually not suitable for modification without extensive rewiring in order to adapt the dimensions of the main circuit to the extensive installation; stacL Known switching devices are designed to accept dimensions within a defined range, that is, a certain number of lines that can be connected. Known switching devices, in particular for. A telephone switchboard for interconnecting multiple lines and long-distance links includes a plurality of lines and links, each of which has at least two leads and at least two leads and is capable of reflecting incoming telephone traffic. to it through one of its leads and back to any other of its leads. The links are arranged in many individual stages of lower and higher order. The device according to the invention includes a first data system having a series of subsequent logical elements and a shift register. The output of the first logic element is connected to the input of the shift register. The output of shift register 20 is connected to the input of the next logical element. The last logic element is connected to the last shift register, the output of which is connected to the output logic element for carrying or receiving a digital signal. The output of the output logic element is connected to the first shift register, whose output is connected to the input of the first logical element. The second input of each logic element is adapted to receive a digital signal from the other input. The second terminal of each logic element is connected to the output line. The device includes a data transfer circuit carrying a plurality of control logic elements, the outputs of which are connected to subsequent logic elements to reflect the digital signal back to the pin of each subsequent logic element connected to the output line - W^v! v.,. , ., The data transfer system includes control memory connected to a shift register connected to the control logic elements via a series of leads of successive logic elements selectively connected to any of the leads of these subsequent logical elements. The device also contains a circuit feeding signals from the pins of the mentioned subsequent logical elements in one step to the connections of any other higher order stage, a reservation circuit containing preferably logical I elements and detection circuits for feeding a digital signal from the pin to connections of higher order. Preferably said links; are links with spatial division. In another embodiment, the links are links with time division. In another embodiment, the links are combined links with spatial division and time division. The device according to the invention preferably includes a control system and a telephone traffic path selection system for digital signals and a memory system. cheap data connected to the control system and selec- tion of the telephone traffic path so that the trying signal is carried on the same path as the digital signals. Digital signals contain a sequence of digitally encoded samples representing the speech signal. The encoded digital signals are preferably linear signals. : pulse code modulation. Digital signals are preferably composed of digitally coded analog signals. Each of the connections' inputs and outputs has an input and an output, and each of the inputs and outputs of each of the connections is adapted to receive signals multiplied with time division in many channels, The control system for reflecting digital signals constitutes a partial periodic coupling for the device. The advantage of the connecting device according to the invention is the adaptation to accept dimensions in a wide range. The invention made it possible to expand the device without redesigning it to handle an increased number of connections and long-distance connections. A small switching device, that is, for several hundred lines, can be easily constructed because there is no specific number of stages required to implement such a small circuit. There is also no upper limit to the device configuration regarding its expansion, i.e. the device can be easily expanded from several hundred lines requiring the use of a small number of steps - L069 * 4, rather than to a large number of lines, e.g. ¬ which applications of many degrees. Moreover, a small operating system can be easily expanded into a large operating system without changing the wiring, which was required in known devices. In the continuously extended switching device according to the invention, the pins containing the pins are individual systems are connected only to connections in the higher order 10 stages, which eliminates the need to change the wiring when expanding the device. Connections between terminals are achieved using the reflection and connection properties of individual connecting elements. Thanks to the reflection properties, the ability to interconnect two leads in the link is determined. This device can be used with both analog and digital transmission systems with two- or four-wire telephone traffic paths with spatial and temporal connection, or their combinations. In the preferred embodiment of the invention, a multi-stage spatial switching device and a time slot exchange switching device are used, using individual switching elements integrated in the link and a control system by means of which telephone traffic can be directed to another connection or 30 leads. The described device is applicable to both analog and digital telephone traffic switching devices and is particularly advantageous when used. used in a four-wire device as a ginuip link, reducer, dereducer or other switching unit with pulse code modulation with specific spatial and temporal switching capabilities for connecting any time interval of any multiple input line with any other interval time of another watery output multiple line. The described link can be arranged in a track connection system both in one direction and in the reverse direction in the case of four-wire interconnections, using the controlled reflection point technique and track selection control with access to control commands in the case of faults. digitally encoded speech and control commands in the case of direct control of the speech path 50, thereby eliminating additional control lines. An advantage of the invention is that the connection device can be expanded continuously. A further advantage of the invention is that for expansion of the important switching device, it is not necessary to modify the internal and external connecting lines to implement this expansion. (The subject matter of the invention is illustrated in 60 embodiments in the drawing, in which Fig. 1A shows a simplified known connection using reflection, Fig. liB - a known switching device using vertical reflection and connection, Figs. 2A, 2iB, 2C and 2D - simplified switching devices using a broader reflection technique according to the invention, with single-foil units shown as examples, two-focus, three-focus and eight-block connecting devices, Fig. 3 - switching connections in the Mu feed, also using the reflection technique, Fig. 4 - blocking curves as a function of the number of connection stages for different levels of telephone traffic intensity, Fig. 5iA and 5IB - connection matrices using disconnection/iconnection pins, where Fig. 5iA shows a single switching device, and Fig. 5IB shows an extended switching device, Fig. 6A^6'E - a multi-stage, extended switching device according to the invention, Fig. 7A - four-wire delay line, Fig. 7B - control logic circuit - for a single feed or output, Fig. 1C - logic circuit equivalent to that shown in Fig. 7B, Fig. 8 - stack circuit controlling the time connection for a connection device with an oziteroprizewire delay line, using the logic circuit shown in Fig. 7B, Fig. 9 - a logical and block diagram of the cross-connect circuit, and "Fig. 10 - a circuit diagram of the system from Fig. 10 cooperating with a matrix. Tectoics using reflection was used in well-known cross-connecting systems, such as connecting systems with a spatial division, by closing two horizontal branches with one vertical one. This is shown in Figure 1A, where telephone traffic from line units 10 and 12 is routed to link 14 via horizontal matrix lines 16 and 18 to vertical line 20. Each line unit 10 and 12 may contain They are a small arrangement of cross selectors that are well known and have multiple input/output lines 15 attached to it. The idea of reflection is that telephone traffic on line 16 is routed to link 14, where it is reflected from vertical line 20 and exit from the link via horizontal line 18. The improved device of Fig. 1A is shown in a simplified form in Fig. 1B, which also uses the idea of reflection. In this device the vertical lines are incorporated between the joints of the same row, which consequently limits the maximum dimensions to which the device can be extended. A plurality of linear units 22, 24, 26 and 30 are included in individual horizontal lines 32, 34, 36 and 38 and are connected to links 40 and 42. Link 40 serves to connect the linear units 22 and 24 by reflection, and the link 42 is used to connect the linear units 26 and 30 by reflection, and the links 40 and 42 together with the connection 44 are used to connect the linear units 22 and 24 with the linear units 26 and 30. The number designations \ on lines 32 and 34 are equivalent to the interconnection of telephone traffic on lines 32 and 34. Under these conditions, intersections 46 and 48 are closed. The -2 number designations on lines 34, 38, and 44 are equivalent to the interconnection of telephone traffic on lines 34 and 38. Under these conditions, intersections 48 and 50 are closed, while intersection 52 is open. 069 6 The known device of FIG. 1B employs a basic reflection technique in which the vertical line of one link is incorporated into another link of the same row, i.e. to the degree of connection of the same row, with the result that maximum dimensions are limited; to which the device can be configured. In contrast to known devices, the invention provides a continuously extended connection device using connections by reflection/connection of vertical lines only to horizontal lines of higher-order connections, and the higher-order connections use also reflection. The terms used here: input, output, input and output are defined as follows. The input is a component attached to a link or bundle of connectors, which carries signals from outside the link, while the output is a component on the link that carries signals away from the link. A feed is a connection leading to a link, having both an input element and an output element, carrying signals related to two transmission directions, creating a full duplex communication path and connected to one link site. A lead is a connection leading to a link having both an input element and an output element carrying signals associated with two directions of transmission, creating a full duplex communication path, and connected to the side of the link opposite the lead. Figs. 2A through 2tD show a device that illustrates a finishing technique according to the invention, in which the output from any link of a given stage is never connected to the same or lower stage and in which the numbering of stages is from the final stage to a specific place in the ascending P'orzaldtou. [ Q It should be understood that that the configuration of the device is greatly simplified when representing an extended device. To be more precise, each switching matrix consists of a certain number of switching stages through which the track connecting the two terminals must pass. In one device, this connecting path crosses each step only once and the connection from the output terminal to the termination terminal always crosses any step in only one direction. In this device, the connection between the output terminal and the termination terminal may cross any step in any direction and will cross at least one step at least twice, once in each direction. According to the invention, the pins of the highest order connection stage are used for reflection, but these pins are always available for connection to a still higher order stage without modification of the device. M pins are used to join to another link, or can be considered as composite elements. A composite element can be defined as that element in a device in which the signal changes direction, that is, stops propagating in a higher order direction. In addition, the link's reflecting and combining capability is to be used in changing conditions. Fig. 2A shows a 2X12 line connection having two leads 100 and 102 and two reflection lines 104 and 106. The reflection lines 104 and 106 are also vertical connections. In the event that each of the feeds 100 and 102 is a 24-mail multiple line with time division, the Jacze 108 can provide the ability to connect 150' lines, with proper concentration on one feed and up to 24 lines connected to it. expensive feed with full connection (interconnected between them). Another example of the connection reflection technique is the case in which lead 100 is connected to a circuit having six lines concentrated on it, while lead 102 contains a duplex link line leading to another place, connection in an analog and non-multiple configuration. By using only one reflection line 104 and ailb 106, both line-to-line (reversible) and line-to-link connections can be made at the same time. This device can be further expanded, for example up to 12 lines and 2 links. , as shown in Fig. 2b, where additional links 110, 112 and 113 have been added with an identical configuration as link 108, thanks to the blackness two degrees are obtained. The link added in the expansion block of the second end link is numbered 2. If interconnection between channels on link 108 is required, the pins of link 108 are used as reflection lines 104 and 106, that is, for telephone connections. between output lines and links The reflection properties of link 108 are used when calls are also connected in a similar manner on new terminals. However, for connections between the terminal formed by link 108 and the terminal formed by link 110, to which is connected the same number of lines and connections as is connected to link 108, the pins of links 108 and 110, i.e. both first stages, are connected. through a common second stage connection, i.e., link 112 or 113. Second stage reflection lines 114, 116, 118 and 120 are used to terminate the connection. To connect the channels and/or primary links 108 and 110, the output of each exchange of these links is used as a link to a higher order common link stage, where it is used as a reflection stage. Fig. 2C and 2D show a further expansion of the switching device to three and eight original links respectively. This technique of expanding the arrangement of internal barrel and external connections can be achieved for connections with spatial and temporal division and for any connecting element with the required dimensions. Fig. 2 shows the use of spatial division. The three-prime link configuration shown in Figure 2C provides the ability to connect six additional lines and another duplex link on the third link 126. Two-thirds of the incoming telephone traffic from link 126 will be allocated to the first two links. 128 and 130, ponjie^ 10 15 20 30 35 40 45 50 55 hose two-thirds of the incoming lines and links of the switching device are connected to hoses 128 and 130. Therefore, if each feed provides one unit of telephone traffic, then 1 two the thirds of the two links 128 and 130 constitute four thirds of a unit of telephone traffic that exceeds the telephone traffic capacity of one connection pin, and two secondary links 132 and 134 are provided for the third primary link 126. As shown in FIG. . 2D, adding a fourth link will not change the arrangement of connections of existing Hnii. Links 136 and 138 of the second stage and links 140 and 142 of the third stage have the same configuration as the links of the primary station. Expansion of the device without changing the arrangement of existing line connections is shown up to eight original connections, each of which can receive, for example, six lines and a duplex connection line, as shown in FIG. 2D. The eight primary links 150 to 164 of the first stage switching device may be identical in configuration to those shown in FIGS. 2A to 2C. Compared to a single-stage system, the configuration of the switching device according to the invention is more economical because the cost of a single-stage device increases linearly with the increase in the number of terminals, i.e., leads or lines, whereas in the device according to the invention it increases approximately like the base 2 logarithm of the number of ends. The relationship is illustrated in the following table for the eight-block arrangement of Figure 2D. Original links (2N) r 2 3 4 19 8 7 a 16 30 Number of added links I 3 15 3 7 ;5 5 3 Total connections in the device - 1 4 ¦ 9 ia |19i 24 .29 32 W 192 Number of connections in the device per primary connection ii 2 3 3 3.8 4 4.1 tf 3 6 N N, = number one hundred ¬ trunk-! 0 1 2 3 4 5 The links added to the circuit in steps 2, 3 and 4 are marked with numbers. corresponding to the addition of the original link, the addition of which requires the addition of the appropriate connection stage. higher order. So, for example, adding a fifth primary link 158 adds second-degree links 166 and 168, third-degree links 170 and 172, and fourth-degree links 174 and 176. the lengths of which constitute the entire switching device, shown in the recommended version. Each connector must act as a spatial link, capable of connecting m leads with n pins. Moreover, each basic link must contain at least one time interval exchange unit for each feed or lead, where m corresponds to the number of feeds and n to the number of leads. It should be understood that the designation of the leads and pins is only exemplary and the number of exchange units will correspond to the smaller number m or 10 * n. In the event that the number of exchange units is equal to the larger of the numbers m or n, or in any case when it is greater than the smaller of the numbers m or n used, the device will continue to operate; however, it will have reduced efficiency. Finally, each primary link must contain control elements for the signal reflection that is critical to the four-wire system. The 2° connect/unlink controls are shown in simplified form in FIG. 3, however it should be understood that each of the controls shown corresponds to a logic element described in the section relating to FIG. 7A. K A spatial link, the use of which is also required, is capable of adding m X n lines. * A high concentration capacity can be obtained when m is greater than n, and a device expansion capacity can be obtained when n is greater than m. Moreover, in the case of concentration, when it is required symmetrical link (n Moreover, the link m ¬ on the number of pins. Fig. 4 shows the blocking curves B as a function of the number N of connection stages for four and five levels. As used here, blocking may mean the inability to interconnect unloaded lines or links connected to a system due to any reason. The term non-blocking means here that the circuit has at all times at least one reaching connection between any pair of unloaded lines or connections connected to the circuit, regardless of the number of connections already in existence, 55 in each case. important features of the device's operation are the ability to respond to changing levels of thermal movement and the phenomenon of increased number of degrees of operating characteristics. According to the invention, if the number of device stages increases, 60, each stage containing a plurality of links, each of which has an identical parallel function with respect to another link in a connection stage of the same order, the blocking does not increase continuously but reaches an asymptotic value between 65 zero or one, depending on the dimensions of the connection and the intensity of telephone traffic. The term traffic intensity may be used here. defined as the volume of telephone traffic on one or more telephone traffic paths per unit of time and is usually measured in erlangs, where one erlang is the volume of telephone traffic occurring continuously or on one or more paths carrying concentrated traffic telephone - one call hour per hour, one call minute per minute and so on. According to the invention, the blocking characteristic B for a given number of connection stages N for low, medium and high levels of telephone traffic is such that There is a relationship between the blocking characteristic and N, where N is the number of stages, such that once the maximum blocking level is reached, the blocking of the system will continue to increase, i.e. the blocking curve of the device as a function of. N becomes aisymjptornatici at the maximum blocking level. These are shown in Fig. 4 for four levels of telephone traffic intensity, with curve 1 representing low telephone traffic intensity, curve 2 representing low to medium telephone traffic intensity, curve 3 representing medium to medium telephone traffic intensity. large and curve 4 represents a high volume of telephone traffic. If the dimensions of the link are increased to any extent, the probability of blocking becomes smaller for a given volume of telephone traffic, riencing the device using the output terminals of the call/call. 300 are provided by a space-divided connection matrix 302 and exemplary channel exchange units 304, 306, and 308. Each lead (of which leads 310, 312, 314 are three examples) and each lead (of which leads 322, 324, 326 are three examples) have inputs and outputs that carry the input and output paths of a four-wire connection. As used herein, the terms channel exchange unit and time interval exchange unit are interchangeable. Each connection matrix 302 provides thirty-two channels on each of eight leads, of which are shown for simplicity of description: only three leads 310, 312 and 314 (leads 0, 2 and 7, respectively). Data from leads 310, 312 and 314 at inputs 311, 313 and 315, designated respectively as leads 0, 2 and 7, are among the eight leads, can be fed to channel exchange units 304, 306 and 308 via connection matrix 302 space-divided to leads 316, 318 and 320, respectively. Thus, data from any of the inputs of the switching device may be selectively fed to the water from the inputs of the channel exchange units for each of the channel periods. Three channel exchange units 304, 306 and 308, one for each of the shown switching device pins 322, 324 and 326, introduce a specific delay, effectively feeding data from the time channel at the input to another time channel at the input. output so that no two channels occupy the same time slot on each channel exchange output. For example, data from input 313 of lead 312 is fed via intersection 354 to input 244 of lead 318 of one-eyed channel exchange 306. The kanattUi 15 data at input 313 is effectively converted into channel 21 data at output 3Z8. The output 328 of pin 324 of the channel exchange unit 306 may be set to change the impedance state of the connection to the input 330 of pin 324 of the channel exchange unit 306, as shown in the drawing. The exchange of channels may result, for example, in the fact that data at the input 330 to channel 21 will be converted into data in the time channel 9 at the output 334 of the feed 318. The connection matrix 302, through the intersection 340, brings the data from the output 334 to the output 338 of the feed. 314 devices. This defines the data path, corresponding to two wires of a four-wire path. The second half of the data track is described as follows. Data at the input 315 of the feed 314 in the time channel 9 are fed via the intersection 342 to the input 244 of the feed 318 of the channel exchange unit 306. Channel exchange unit 306 time-transfers data from channel 9 to channel 15 at output 334 of lead 318 and brings it to an intersection 350, which directs data from channel 15 to output 352 of lead 312. The control is such that there is independent access by each of the leads 310, 312, 314 and so on of the connection matrix to the channel exchange leads, all in a specific format. Fig. 5B shows an extended device of Fig. 5A, which has an exemplary new telephone traffic path and corresponding connections, and in which a plurality of similar switching arrangements are combined into a multi-stage switching device. The telephone traffic path is obtained from input channel 15 of lead 2 of link 300 to output channel 21 of lead 6 of link 300. Lead 6 of link 300 is connected to lead zero of link 300A. Input channel/21 of lead zero of link 300A 50 is coupled to output channel 30 pins 25 30 35 40 45 connectors 7 300A. Thus, channel 30 of pin 7 of link 300A provides reflection for the connection described, as shown in Figure*. The connection is obtained via the input channel 30 of pin 7 of link 300A, which is coupled to output channel 17 on pin 7. 300A connection. Lead 7 of link 300A is connected to lead 6 of link 300B, which connects the input channel 17 of lead 6 to the output channel 9 of lead 7 of link 300B. This represents the connection of the input channel 15 of lead 2 of link 300 with the output channel 9 of lead 7 of link 300B by reflection in channel 30 of lead 7 of link 300A. The return half of the four-wire connection is in addition to the above. The path selected by link 300 as described in FIG. 5A before the expansion of the device is also possible to be selected by link 300 after the expansion shown in FIG. 5B. The choice of reflection or transmission on pin 6 of link 300 will depend on the required path. It is shown that the connecting device with filament The 5iA' is developed into a modular, multi-stage device using technology to provide any required input connection, while leaving the possibility of further expansion of the reflection output by connection to a higher order stage. The remaining links 300C, 300D are configured as follows. ¬ similar to the connections described. Figs. 6A and GE show distribution switching devices in which each switching block contains 2X12 connections and which constitute several embodiments of the invention. In practice, larger links of the order of 8iXi8, 10Xjl<6, 32iX(32) can also be used, depending on the packing, wave ratio and other economic solutions. For 192 lines in a thirty-two-cariare device when transmitting telephone traffic, 1 eriang/ /line, for each of thirty-two channels results in a telephone traffic volume of 6 erlangs. Assuming that fifty percent of the telephone traffic is internal, the telephone traffic on the link is 1-9.2 erlangs divided by two or 9.6 erlangs for a system of 19(2) linear. If the telephone traffic of the link runs on one track through one unit in each direction, each link unit requires the ability to carry 4.8 erlangs on 192 lines. The following table applies to the assumed time and space device according to the invention in Figs. 6A to 6E .Fig.AA 6B 00 6iD GE Number of lines im 3184 570 7183 960 Erilangi friniii 19.2' 38.4 5f7.6' 7i6.8 96.0 Telephone traffic 9.6 19.2 28.® 38, 4 48i0l Single-track traffic ¦ 4j8 9^6 14.4 19.2 24^qv Number of switches (l*/o blocking probability) 11 18 25 3J1 3T Total voltage number of switches 22 36 50 62 74 ..Number of switches 1 ' 4 7 9 12131 ( 13 The connection according to the invention in the preferred embodiment may be made on a single board, combining both spatial and temporal functions, and may be cascaded and interconnected to create a device extended in a continuous manner, for example from two thousand to one hundred thousand lines. The functional link channel exchange unit may be a delay line made of charge-coupled devices or dynamic MOS search registers 10 and provide the additional delay required to create a four-wire path, as shown in Fig. 7A, in which two signals are shown. inputs SI and S2 on lines 700 and 702. The SI and S2 signals have variable delays, shown for the S2 signal by 706 and 708, typically from 5 to 12i5 microseconds, with the delay of the SI signal. is represented by 709. The total delay 706 piuis 708 piuis 709 jieslt is usually equal to 12) 5 microseconds. The logic to obtain this delay is shown in Fig. 7B. Each signal input is capable of receiving and transmitting the signal currently existing across the link. The time slot exchange control signal C 25 on line 710 is fed to logic elements IJ712 and 714 and to logic elements IJ716 via inverter 718. The digital signal The speech signal SI is combined with the control signal C in element Ij7i2, while the signal S2 is combined with the control signal C in element IJ714. The digital speech signal S2 is fed from shift register 7^0 to I elements 714 and 716 and combined with a negated control signal in I element 716. The output signal of I element 716 (signal S2). is coupled to the output signal of I element 712 (SI signal) in OR element 722. Both the SI signal and the S2 signal are passed through shift register 724. The simplified logic of FIG. 7C shows shift registers 720 and 724 and the previously described logic circuit 726 ; and will be used further. When the described control logic is used to output a signal, the control signal on line 710 is the selected, stored control signal, however, when the described control logic is used to output a signal, the signal The control signal is a reflection control signal. Fig. 8 shows a timing link and associated control logic, as described in the support of Fig. 7IB, for a multi-channel four-wire device. The input signal S1 is supplied to the feeder 800 of the input line 802, while the output signal S2 in the four-wire return path is received from the output line 804 of the feeder link. Pin '806 contains input line 816 pins and output lines 818 60 * pins. The delay of the SI signal between input 802 of lead 800 and output 818 of lead 818 is selectively changed by selecting inputs 802, 808, 810, 812 and so on the desired signal or other inputs (not shown) 65 14 in the delay line time link, with the program ¬ important control of the control memory. 814, which contains the addresses of the signal inputs in a specific and variable order. By providing the input address of the required signal from control memory 814, the SI signal enters it and the S2 signal is received from the selected access point on the delay line. Control memory 814 is synchronized by timing circuit 820 to synchronize with the delay line, so that the address selected for each input point of the SI signal is directed from control memory 814 via lines 822 to serial-parallel shift register 824. Shift register output signal 824 This is used to select and drive one of the control logic circuits that are used for each of the thirty-two channels driving selected inputs 802, 810, 812, and so on. These control logic elements are shown for channels one, two, three, three hundred and thirty-one and marked 826 accordingly; 828, 830, and 834. The parallel output of shift register 824 is coupled to logic elements 826 to 834 via lines 836 to 844. LMnia 846 serves as a delay line returning from logic element 848. A synchronization signal applied to synchronization circuit 820 is used for matching. at the speech sample frequency and the frequency encoded control signal driving control code 824. These two timings do not need to be bit-synchronized because the two codes can be different, i.e. the speech sample can contain eight bits while when the control code can contain five bits. Each time a signal is entered, received, and passed through the link with elements 850, 852, 854, 856, and 858 between the input and output shift registers 860 and 870, the selected input will take place. controlling the series of signals SI and S2 to provide the required delay of the signal SI between the input and output and the additional delay of the signal S2 in the return path. Logic element 848 allows the signal to be reflected at the link output when the path selected between the calling and called subscriber requires a path to be created at this point in the circuit. Reflection of a particular call, if required, is achieved by energizing control input 872 of the element. logical 848 in the correct chatsde. For example, a sample of the SI signal enters input 802 of lead 800 and is to be reflected and return from output 804 of lead 800 at a specified later time, such that the two channel weights are later than the signal SI* occurring at a time of the same channel when the complementary signal S2* (which is a sample of the signal at another conversation source) enters input 802 of lead 800 and exits at output 804 of lead 800. Signal S2 occurs on channel 30 at a later time, which represents the channel times thirty-two ntóTKUS"131069 15 16 two, at the same channel time as the next SI signal sample enters input 802. To accomplish the above, logic element 826 energizes I/O logic element 858 to input the SI signal onto the delay lite. and the side input 872 of logic element 848 is excited at a predetermined level on one channel, subsequent to the reflection of the SI signal at line 846. Logic element 834 is then excited to supply the signal. input/output to the control logic element 850 for receiving the SI signal and feeding it as the SI* signal to output 804, while simultaneously inputting the S2* signal has input 802 to the delay line of shift register 862. After thirty additional channel times, logic element 826 will again drive I/O logic element 858 for receiving! signal S2* at output 804 as signal S2. Simultaneously with the above, the next sample SI from input 802 is fed into the delay circuit of shift register 870. The wired link carries and reflects the signals SI and S2 according to the requirements of the specific connection path, which is defined by the pa 814 control unit. Digitally encoded speech signals and commands controlling the selection of interconnects and switching elements are encoded for each channel in sixteen serially transmitted K bits. Typically, 8k frames per second are transmitted with 32 channels per frame and 16 bits per channel. Synchronization is ensured so that, for example, channel 0 occupies the same time interval (or period) on both input and output connections. Channel swapping ensures that the 1<6 bits contained in each channel are sent to the other channel by introducing a delay to the bit stream. This delay (in the case of thirty-two channels) is a minimum period of one channel and a maximum period of thirty-one channels. The reflection is obtained by a controlled change. impedance pins of the link, which corresponds to the exchange of channels to state. with high impedance and connecting together the output and input of said pin of the selected channel. Fig. 9 shows a typical one; matrix (intersections 900 of the XY space with time division, used in the time link described earlier, where the intersection of the X feed containing the lines, input 902 and output union 9, input line 906 and lines output 908, which is related to the channel cutting. To the link; 910 is fed to one input: a connection selection signal from the control memory and an output signal from the link 906 from the channel exchange unit, and the output of the link 910 is connected to the link X-link input line 904. Link 912 is connected to the connection selection signal from the control memory and the signal from X-link input line 902, and the output of link 912 is connected to line 908 leading to the channel exchange unit associated with it. 906 and 908 at locations 924 and 926 are connected to input and output connections similar to connections 910 and 912 (including seven other leads). Input and output lines: 902 and 904 leads X are also connected to the detection circuit 914 ¬ and redundancy checks for call recognition and the 916 detection system are not burdened. channel through logical elements I 918 and 920, io, with other inputs connected to logical elements I 918 and 920, which are indicators of activation of the logical elements at the required times. A detection circuit 914, which may have a conventional design, is used for detecting commands at input 902 that are routed to the routing circuitry associated with output Y, for checking the encoding of commands to determine that such commands are not erroneous, and for detecting unloaded channels at feed input 902.' and to provide signals at feed output 904 to indicate the busy/volume status at input Y. Detection circuit 914 receives commands, such as transmitted busy commands, from the control circuitry. associated with pin Y and in turn delivers a signal representing a busy/free command to output line 904. Then, when detection circuit 914 recognizes a select command at input 902, which is routed to pin Y, detection circuit 914 sends the priority select signal to the patch priority control circuit, which, upon request, simultaneously controls more than one lead to the output of pin Y. The output of the unloaded channel detection circuit 916 is connected. to the free channel selection system via line 922. The matrix: 900 intersections, XY described based on Fig. 9 is shown in Fig. 10, which shows one example pin 960 and its control circuit , containing eight other leads in a matrix with eight leads and eight leads, zero through seven, connected to two leads 962 and 964. The XY intersection of matrix 900 0 corresponds to the intersection described in connection with FIG. "9., Also similar to Fig. 9, eight such intersections may be connected to time link 928 (channel exchange) via lines 906 and 908. Time link 928 is described in connection with Fig. 8. Detection circuits 930 and 932 operate in a similar manner to detection circuit 914 described in connection with Fig. 9, and detection circuits 934 and 936 operate in a similar manner to detection circuit 916, also described in connection with Figure 9. Signals from outputs 922 , 938 and 940 of the detection circuits 914, 930 and 932 display an ad-collection of the commands in these particular circuits, thus requiring connection to the channel exchange unit 928, and are separately connected to the circuit 942 controlling the priority of the intersection. After receiving simultaneous commands on two barrels of a larger number of lines, the control circuit 942 acts to select one of the required leads 25 30 35 -40 45 50 55 60/' 17 and sends commands to send busy signals to the other, unselected, required leads on by means of signals on lines 944, 946 or 948, to the individual detection circuits 914, 930 and 932 and to the individual output lines on the leads of the intersection, as described in reference to FIG. 9. Place selection arrangement 950, intersection receives and stores in its control delay line of a structure similar to the control pad 814, described in connection with FIG. ¬ siters 952, 954 and so on. Signals at input 956 and pins 960 may include path selection control signals received from the higher order link after reflection, which signals are recognized by the previously described detection system 932. As a result, pin 960 forms one of the leads of such a higher-order switch. Unloaded channel detection circuits* 934 and 936 perform the same function as. unloaded nail detection system 916 - written based on FIG. 9. It should be understood that the matrix shown in FIG. 10 is only exemplary. An additional seven matrices identical to those described in FIG. 10 may be connected to leads 962 and 964 in sections 966 and 968. Up to six additional leads may be connected having circuits and connections identical to those corresponding to leads 962 and 964 .Patent claims II. An extensive switching device, especially for a telephone exchange, containing a number of lines, links and switches connected in many stages, characterized in that it contains a first data system having a number of subsequent logical elements and a shift path, the output of the first logic element (850) is connected to the input of the shift register (862), the output of the shift register (862) is connected to the input of the next logical element (852), and the last logical element (858) is connected to the last shift register (870), the output of which is connected to the output of the logic element (848) for carrying a digital signal (SI) or receiving a digital signal (S2), and the output of the output logic element (848) is connected to first shift register (860), the output of which is connected to the input of the first logical element (850), and the second input of each logical element (850, 852 854, 856, 858) is connected for 1. receiving a digital signal to the input (802, 808, 810, 812) and the other pin of each logic element (850, 852, 854, 856, 858) is connected 1069 18 to the output line (804), and includes a data transfer circuit containing a plurality of control logic elements (826, 828, 830, 832, 834) whose outputs are connected to subsequent logic elements (850, 852, 854, 856, 858) to reflect a digital signal back to the pin of each subsequent logic elements (850, 852, 854, 856, 858), connected to the output line (804), and the data transfer circuit also includes a control memory (814) connected to the shift register (824), connected to the control logic elements (826, 828, 830, 8 - 2, 834) through a number of leads of subsequent logical elements (850, 852, 854, 856, 858), connected selectively to any of the leads, these logical elements (850, 852, 854, 856/858) and links (912, 910) feeding signals from the leads of the mentioned subsequent logical elements in one stage to the leads of links of any other higher level stage, as well as a reservation system preferably containing I logic elements (918, 920) and detection circuits (914, 916) for feeding a digital signal from the pin to the higher order links. 25 2. The device according to claim 1, characterized in that said links are spatially divided links. 3. The device according to claim 1, characterized in that said links are time-divided links. 4. The device according to claim 1, characterized in that said links are combined links with spatial division and time division. i5. The device according to claim 1, characterized in that it includes a telephone traffic path selection control system for digital signals and a data storage system connected to the telephone traffic path selection control system so that the control signal is routed in the same path as the digital signals. - 6. The device according to claim 5, characterized in that the digital signals include a sequence of digitally encoded samples representing a speech signal. J7. The device according to claim 6, characterized in that the encoded digital signals are linear pulse code modulated signals. 8. The device according to claim 6, characterized in that the digital signals are composed of digitally encoded analog signals. 50 9. The device according to claim 1, characterized in that each of the leads and outputs connects - has an input and an output, and each of the inputs and outputs of each of the leads and outputs is . adapted to receive signals multiplied with 55 time division in many channels.. liO. The device according to claim 1, characterized in that the control system for reflecting digital signals constitutes a partial periodic transition for the device.131 069 20 t ¦*, U 38) rL0 L6 RG. IB ,Ul 50 52 FIG. 3 230 23d iffl TSI c232 TSI -236 FIG.2A 1°^ 1027 L109 106 FIG.2B 2 MU 116 lii* no 120 FIG, 2C131 069 FIG. A131 069 FIG. 5B 300C 300A CH30 FIG. 6A 192L 22T FIG.6B <192L 1BT 192 L FIG.6D 31T 192 L J1I 1 2 (S 2 2 3 __] FIG.6C r 192L 1 J5lM_ 192L, 1 \m\_J_ 192 L, , ^\ 3 T2 " t FIG. 7A .702 706. SI 7nn «709 t S2 ^708 r700_X tS2 x- FIG. 7B c716 r722 []_7I< r720 FIG. 7C 7267|C 1$2 fsi *72L 820 -YNC B3V S.R. v860 804- (sn |s2 832 30 . S.R.-BU 3L 836-, 838 _BdK_ 842- T84U 830- (B22 828' -846 rx! ti^; he02 800 ,B24 826 852 MJ64 1^654 v866 rp656^-BB8 B48-kA 816 S .R S2 Sil 806 W 672 810 FIG, 8 812 858131 069 902; r - V L < < ^ -901 910^ V i —^ V FIG. 9 XY ^~ 1 ^918 ) y i ^920 ¦ ? ) * y 916- __f_ *Vn 9,12 i „ 926 ^ ! V 1 V< 9U^ *-¦ 908 ^906 n ——-i i A B -4- 922! j fc- ,V * 968 90i. 902 I92B ,_ -B16 M , 956 t r: ¦*-*—=; * | m '[f-srjw FIG.10 DN-3, order 129/87 Price PLN 100 PL PL PL PL PL

Claims (1)

1. Patent claims II. An extensive switching device, especially for a telephone exchange, containing a number of lines, links and switches connected in many stages, characterized in that it contains a first data system having a number of subsequent logical elements and a shift path, the output of the first logic element (850) is connected to the input of the shift register (862), the output of the shift register (862) is connected to the input of the next logical element (852), and the last logical element (858) is connected to the last shift register (870), the output of which is connected to the output of the logic element (848) for carrying a digital signal (SI) or receiving a digital signal (S2), and the output of the output logic element (848) is connected to first shift register (860), the output of which is connected to the input of the first logical element (850), and the second input of each logical element (850, 852 854, 856, 858) is connected for 1. receiving a digital signal to the input (802, 808, 810, 812) and the other pin of each logic element (850, 852, 854, 856, 858) is connected 1069 18 to the output line (804), and includes a data transfer circuit containing a plurality of control logic elements (826, 828, 830, 832, 834) whose outputs are connected to subsequent logic elements (850, 852, 854, 856, 858) to reflect a digital signal back to the pin of each subsequent logic elements (850, 852, 854, 856, 858), connected to the output line (804), and the data transfer circuit also includes a control memory (814) connected to the shift register (824), connected to the control logic elements (826, 828, 830, 8-2, 834) through a series of leads of subsequent logical elements (850, 852, 854, 856, 858), connected selectively to any of the 15 leads, these logical elements (850, 852, 854, 856/858) and links (912, 910) feeding signals from the leads of the mentioned subsequent logical elements in one stage to the leads of links of any other higher level stage, as well as a reservation system preferably containing I logic elements (918, 920) and detection circuits (914, 916) for feeding a digital signal from the pin to the higher order connections. 25 2. The device according to claim 25. 1, characterized in that said links are spatially divided links. 3. The device according to claim 1, characterized in that said links are time-divided links. 4. The device according to claim 1, characterized in that said links are combined links with spatial division and time division. i5. The device according to claim 1, characterized in that it includes a telephone traffic path selection control system for digital signals and a data storage system connected to the telephone traffic path selection control system so that the control signal is routed in the same path as the digital signals. - 6. The device according to claim 5, characterized in that the digital signals include a sequence of digitally encoded samples representing a speech signal. J7. The device according to claim 6, characterized in that the encoded digital signals are linear pulse code modulated signals. 8. The device according to claim 6, characterized in that the digital signals are composed of digitally encoded analog signals. 50 9. The device according to claim 1, characterized in that each of the leads and outputs connects - has an input and an output, and each of the inputs and outputs of each of the leads and outputs is . adapted to receive signals multiplied with 55 time division in many channels.. liO. The device according to claim 1, characterized in that the control system for reflecting digital signals constitutes a partial periodic transition for the device.131 069 20 t ¦*, U 38) rL0 L6 RG. IB ,Ul 50 52 FIG. 3 230 23d iffl TSI c232 TSI -236 FIG.2A 1°^ 1027 L109 106 FIG.2B 2 MU 116 lii* no 120 FIG, 2C131 069 FIG. A131 069 FIG. 5B 300C 300A CH30 FIG. 6A •192L 22T FIG.6B <192L 1BT 192 L FIG.6D 31T 192 L J1I 1 2 (S 2 2 3 __] FIG.6C r 192L 1 J5lM_ 192L, 1 \m\_J_ 192 L, , ^\ 3 T2 "t b131 069 FIG. 7A .702 706. SI 7nn «709 t S2 ^708 r700_X tS2 x- FIG. 7B c716 r722 []_7I< r720 FIG. 7C 7267|C 1$2 fsi *72L 820 -YNC B3V S.R. v860 804- (sn|s2 832 30 . S.R. -BU 3L 836-, 838 _BdK_ 842- T84U 830- (B22 828' -846 rx!ti^; he02 800 ,B24 826 852 MJ64 1^654 v866 rp656^-BB8 B48-kA 816 S.R. S2 Sil 806 W 672 810 FIG, 8 812 858131 069 902; r - V L < < ^ -901 910^ V i —^ V FIG. 9 XY ^~ 1 ^918 ) y i ^920 ¦ ? ) * y 916 - __f_*Vn 9,12 i „ 926 ^ ! V 1 V< 9U^ *-¦ 908 ^906 n ——-i i A B -4- 922!j fc- ,V • * 968 90i. 902 I92B ,_ - B16 M .956 t r: ¦*-*—=; * | m '[f-srjw FIG.10 DN-3, order 129/87 Price PLN 100 PL PL PL PL PL