CS262536B1 - Connection of transmission fields in the intercity telephone exchange at the exits of the busbar group with twenty exits - Google Patents

Abstract

The invention relates to the connection of transmission fields in a telephone exchange at the exits of a busbar group, each having twenty exits. In the basic gearbox connection with at least ten busbars, the number of gearbox connected devices is twice the number of busbars in the gearbox and the devices are connected to the first and eleventh of all busbars. Other busbar exits are connected to these devices in cyclic tandems equal to the number of devices connected to the transmission field. The connection of the transmission field with the same number of busbars is derived from the basic circuit, but with more connected devices. Jumpers in tendencies are gradually omitted from the basic wiring of the transmission field, and another device is connected to the east, which is the beginning of a separate part of the tandem.

Description

The invention relates to the connection of transmission fields in a telephone exchange at the outlets of a busbar group comprising at least ten busbars each having twenty exits.

In a PABX, some devices are centralized to a group of devices and connect via a group of busbars to other PABX devices when their collaboration is needed to establish connections in the PABX. The busbar group has entrances and exits.

Other PBX devices are permanently connected to the inputs. All exits in the group are permanently connected to the exits in the gearbox. If necessary, the busbar looks for a free device connected at one of its exits and connects the device to the input after which the device connection request came.

For example, a busbar searches for a free device by starting cyclically searching through all of its exits in order of increasing busbar exit number and testing whether a free device is connected to the east. After the last exit in the busbar, the first exit follows. This implies that all busbar exits are searched and occupied approximately equally.

The number of busbar group exits is generally greater than the number of devices connected. Therefore, on average, several busbar group exits are permanently connected to one device.

This connection takes place in the transmission field. Each busbar has the same number of exits in the transmission field. The number of busbars in the transmission field and the number of exits from one busbar indicate the size of the transmission field.

The transmission field contains busbar group exits and jumpers between the exits. The jumper is the wire connection of the two exits of the transmission field. The jumpers connected in series consist of a tandem. Tandem has a start in the east, where the device is connected. The gearbox is mounted on the side of the intermediate distributor fitted with vertical pointed tapes. The busbar group exits are connected to the tips. Gearbox jumpers are mounted between the tips. At some of these peaks, the device is permanently connected.

The following demands are placed on a good transmission field:

- good operational throughput for equipment connection requirements as the ability to provide as many free devices as possible at the exits of each busbar,

- easy design in projection,

- regular involvement,

- economy in material consumption,

- the possibility of making relatively simple changes to the transmission field without impairing its good operational throughput.

Good throughput is the most important feature of the transmission field. Due to the above-described uneven occupancy of the individual busbars in the transmission field, the interconnection of the individual busbars with one another has a decisive effect on the good operational throughput of the transmission field.

The transmission field is easier to design if a simple design methodology and various graphical aids are developed. Regular wiring of the transmission field is beneficial for installation and maintenance work, as it facilitates schematic orientation and realization of the transmission field. Workers can better remember the engagement and do not often need to consult the documentation. The transmission field is economical in material consumption if the sum of the lengths of all jumpers in the transmission field is as small as possible. Easily making changes in the transmission field is a very important requirement for the transmission field, since these changes are made quite often due to changes in the telephony network. It is desirable that as many jumpers remain as possible when changing the transmission field. From the design of the transmission field it should be obvious the order of assembly of jumpers so that jumpers do not interfere with the removal of some of them in order to increase the number of connected devices in the group. Changes in the transmission field must not reduce its throughput. These requirements for the transmission field contradict each other, so the design of the transmission field is always a compromise.

The main disadvantages of the existing transmission fields are that they were designed individually only according to their parameters - the number of busbars, the number of busbars and the number of devices in the group. Transmission fields of similar or even identical parameters often had significantly different connections. To ensure a good throughput of the transmission field, the design principles of uniformity in the interconnection of the individual busbars should be respected. However, the design was not examined by computer modeling, so the actual throughput of the proposed transmission field was only hyptetic. Gearbox design was laborious. Although designers were careful about the wiring of the gearbox, the design was relatively easy to make in the future, as the design field was not up to date. It was difficult to control the economy in material consumption. The mounting of the gearbox on the intermediate switchgear was complicated by the fact that each gearbox had a different connection and the order of mounting of the jumpers in the gearbox was not prescribed with respect to changes. Similar difficulties were encountered in the maintenance of operated transmission fields in the control panel. Repeated changes in the operated transmission field generally led to a gradual deterioration in its operational throughput, as it was not feasible to remodel the entire transmission field due to a small change in the device group.

The above-mentioned disadvantages are overcome by the connection of the transmission fields according to the invention, which is based on the fact that in a transmission field with at least ten busbars having a number of devices equal to twice the number of busbars in the transmission field the first exit of all busbars and the second to tenth exit of all busbars are connected to these devices in a number of tandem busbars starting at the first exit of all busbars and repeating cyclically on individual busbars, the last busbars in the transmission field being considered adjacent to the first busbars. The remaining number of devices, equal to the number of busbars in the transmission array, is connected to the eleventh exit of all busbars and the 12th to twentieth exit of all busbars are connected to these devices in the same tandem busbars starting at the eleventh exit of all busbars wherein the last busbar in the transmission field is considered adjacent to the first busbar.

According to the invention, a transmission array with at least ten busbars with a number of devices equal to twice the number of busbars in the transmission array is the basic circuit from which the connection of transmission arrays with the same number of busbars is derived, but with more devices connected to the transmission array. This derives from the fact that, as the number of devices on the transmission field is increased, the first jumper of all tandems in the transmission field, then the second jumper of all tandems, etc. until the nineteenth jumper of all tandems in the transmission field are gradually omitted. Jumpers with the same number on different tandems are omitted evenly across the transmission field. One device is connected to the east, which is the beginning of a separate part of the tandem.

The main advantages of the invention are that the connection of the transmission fields according to the invention comprises most of the transmission fields on a group of busbars of the type mentioned above, which may occur in practice. Each transmission field is well operable, which is achieved by a relatively uniform interconnection of the individual busbars with each other. The gearboxes have a regular and well-arranged wiring that facilitates assembly work and maintenance. They are economical in material consumption.

Even greater effects of the engagement of the transmission fields according to the invention are achieved in that all the transmission fields form a single circuit system. They are similar to each other, so that the change of one transmission field to another is made with a minimum of changes in the wiring of the existing transmission field and without a noticeable change in good throughput. Assembly work in the case of changes in the transmission field is also facilitated by the fact that in the transmission fields according to the invention it is possible to prescribe the assembly order of the individual jumpers, which is the opposite order of their possible omission when increasing the number of devices connected to the transmission field. Cyclicity in the connection of the transmission fields according to the invention facilitates a change in the number of busbars in the transmission field - the jumpers are removed only between the first and last busbars in the transmission field and the additional busbars are connected to the cyclic connection of the other jumpers.

All transmission fields can be pre-processed into a catalog from which the designer traces his particular transmission field into the project. The catalog simplifies the transmission field documentation. The catalog will enable machine processing of the design of the gearbox as well as the elaboration of its laborious documentation on the computer, flawlessly and in the final graphic design into the project.

When developing the gearbox documentation, the computer application will make it easier to extend this documentation with additional information that speeds up assembly work and maintenance. For study purposes, administrative and researchers will also find wiring fields that have not been designed for study purposes.

In the following, the invention is explained in detail by way of example embodiments in conjunction with the drawing. In Fig. 1 there is a block drawing of a group of busbars with inputs, busbars, exits, gearbox, devices.

Fig. 2 shows schematically the exits of the transmission field with ten busbars. The busbar exits are indicated by a vertical column of reference numbers on the left. The individual busbars are marked with reference numbers in the line above the figure. FIG. 2 also depicts a first tandem in a transmission array with at least ten busbars starting at the first exit of the fourth busbar where the device is connected thereto, and in the same tandem transmission array with a serial number equal to one increased number of busbars in the transmission array, starting at the eleventh exit of the fourth busbar, where the device is connected.

Both exits with connected equipment are marked with an arrow. Fig. 3 shows schematically a transmission field with ten busbars to which twenty devices are connected. The transmission field comprises twenty tandems as shown in FIG. 2. The symbology used is the same as in FIG. 2. FIG. 4 schematically shows a transmission bar with ten busbars to which sixty-five devices are connected. The symbolism used is the same as in Fig. 2.

The ten busbar transmission field (Fig. 3), in which twenty devices are connected, is connected by twenty tandems, of which ten and ten are identical, and which are repeated cyclically over the busbars in the transmission field. Each tandem of the first ten starts at the first exit 6 of the respective busbar where the device is connected to it. In the diagram of FIG. 3, these exits are indicated by an arrow. By describing the engagement of the first tandem in the transmission field, which begins at the first exit 6 of the fourth busbar 29, all tandems of the first ten are described.

The first tandem of the transmission field in FIG. 3 is shown in FIG. 2. The first exit 8 of the fourth busbar 29 is connected via the eighteenth jumper 53 to the second exit 8 of the sixth busbar 31, whose second exit 7 is connected via the eighth jumper 43 to the third exit 8 a busbar 28 whose third exit is connected via twelve jumper 47 to a fourth exit of the second busbar 27 whose fourth exit is connected via a second jumper 37 to the fifth exit 10 of the first busbar 26 whose fifth exit 10 is connected via a sixteenth jumper 51 to the sixth exit 11 of the tenth busbar, the sixth exit 11 being connected via the sixth jumper 41 to the seventh exit 12 of the ninth busbar 34, the seventh exit 12 being connected via the tenth jumper 45 to the eighth exit 13 of the seventh busbar 32, the eighth exit 13

282536 is connected via fourth jumper 22 ^{3 through the} ninth exit of the fifth busbar 30, the ninth exit 14 of which is connected via the fourteenth jumper 49 to the tenth exit 15 of the eighth busbar 33 where it is terminated by tandem.

The second tandem in the transmission field of FIG. 3 starts at the first exit 2 of the fifth busbar 30 where the device is connected to it. The second tandem connection is analogous to the first tandem connection described above, except that the busbar serial number of all exits in the tandem is one busbar, except for the sixth exit 11 of the first busbar 26, since in cyclic connection the first busbar 26 is considered following the last, tenth busbar. 35. Similarly, the wiring of all the remaining eight tandems of the first ten in the transmission field shown in FIG. 3 can be described.

Each tandem of the second ten in the transmission field shown in FIG. 3 starts at eleventh exit 16 of the respective busbar where the device is connected to it. By describing the engagement of the eleventh tandem in the transmission field starting at the eleventh exit 26 of the fourth busbar 22, all tandems of the second ten in FIG. 3 will be described.

The eleventh tandem in the transmission field of Fig. 3 is shown in Fig. 2. Has the eleventh exit 16 of the fourth busbar 29 connected via the seventeenth jumper 52 to the twelfth exit 17 of the sixth busbar 21 whose twelfth exit 17 is connected via the seventh jumper 42 to the thirteenth exit 18 the third busbar 28, whose thirteenth exit 18 is connected via the eleventh jumper 46 to the fourteenth exit 19 of the second busbar 27, the fourteenth exit 19 is connected via the first jumper 36 to the fifteenth exit 20 of the first busbar 22 whose fifteenth exit 20 is connected via the fifteenth jumper 50 with the sixteenth exit 21 of the tenth busbar 35, the sixteenth exit 21 being connected via the fifth jumper 40 to the seventeenth exit 22 of the ninth busbar 34, the seventeenth exit 22 being connected via the ninth jumper 44 to the eighteenth exit 23 via third prop The fifth busbar 30, whose nineteenth outlet 24 is connected via the thirteenth jumper 48 to the twenty-east exit 25 of the eighth busbar 22, is terminated by tandem.

The twelfth tandem in the transmission field (Fig. 3) starts at eleventh exit 16 of the fifth busbar 22 · Its wiring is analogous to the eleventh tandem wiring described above, only the busbar serial number of all exits in the tandem is one more busbar, except for the sixteenth exit 21 22, since in the cyclic connection, the first busbar 26 is considered to be following the last, tenth busbar 22. Similarly, the wiring of all the remaining eight tandems of the second ten in the transmission field shown in FIG. 3 can be described.

A 10-busbar and 20-wired gear array is the basic wiring for 10-busbar, but more than 20 wired devices. One of them is a transmission array with ten busbars and sixty-five devices shown in Figure 4. In the transmission array, ten devices are connected to the first exit of 8 busbars and another ten devices are connected to the eleventh exit of 16 busbars, as in 3. The twenty-first to thirtieth devices are connected to the fifteenth exit 20 of all busbars and the first jumper 22 is omitted in all ten tandems of the basic connection (Fig. 3) so that the fourteenth exit 19 and the fifteenth exit are disconnected in all tandems. 20 relevant busbars. The thirty-first to forty-thirty devices are connected to the fifth exit 10 of all busbars and the second jumper 37 is omitted in all ten tandems of the basic wiring (FIG. 3) so that the fourth exit 2 ^{and the} fifth exit 10 of the respective busbars are disconnected. The forty-first to fifty devices are connected to the nineteenth exit 24 of all busbars and the third jumper 22 is omitted in all tandems of the basic connections (FIG. 3) so that the eighteenth exit 23 and nineteenth exit 24 of the respective busbars are disconnected. Device fifty-first to sixtieth are connected to a ninth east of busbars 14 and all ten tandem basic diagram (Fig. 3) is omitted fourth jumper 22 ^»the crosswise are all disconnected tandem eighth and ninth East 13 East 14 respective busbars. The remaining sixty-sixth to sixty-five devices are each connected to the seventeenth exit 22 of the first busbar 26, the third busbar 28, the fifth busbar 30, the seventh busbar 32 and the ninth busbar 34. In the tandems of the basic wiring (Fig. 3) five devices are connected, fifth jumper 40 is omitted. ^{in the} eleventh tandem, the sixteenth exit of the tenth busbar 35 and the seventeenth exit 22 of the ninth busbar 34 are disconnected. · ^{in the} thirteenth tandem the sixteenth exit 21 of the second busbar 27 and the seventeenth exit 22 fifteenth tandem are thus disconnected sixteenth fourth bus bar 21 exit 29 and exit 22 of the seventeenth third bus bar · 28th ^{in the} seventeenth tandem are thus disconnected sixteenth east 2i sixth bus bar 31 and 22 east seventeenth fifth bus bar 22 · ^nineteenth tandem are thus disconnected sixteenth above run 21 of the eighth busbar 33 and the seventeenth exit of the second busbar 32.

Claims (3)

1. Connection of inter-city telephone exchanges at the exits of a group of busbars with twenty exits of one busbar, characterized in that in a transmission field with at least ten busbars which has a number of devices equal to twice the number of busbars in the transmission field, the busbars in the gearbox are connected to the first exit (6) of all busbars in the gearbox and the second exit (7) to the tenth exit (15) of all busbars are connected to these devices in a number of busbars matching tandems starting at the first exit (6) of all busbars and repeating cyclically on individual busbars, with the last busbar in the gearbox being considered adjacent to the first busbar, the remaining number of devices equal to the number of busbars in the gearbox being connected to the eleventh exit (16) of all busbars and the twelfth exit (17) to the twentieth exit ( 25 ) of all busbars are connected to these devices in a number of tandem busbars starting at the eleventh exit (16) of all busbars in the transmission field and repeating cyclically busbars, the last busbars in the transmission field being considered adjacent to the first busbars. 2. Connection according to claim 1, characterized in that in the transmission field with at least ten busbars, the first tandem has the first exit (6) of the fourth busbar (29) connected via an eighteenth jumper (53) β through the second exit (7) of the sixth busbar (31). whose second exit (7) is connected via the eighth jumper (43) to the third exit (8) of the third busbar (28), whose third exit (8) is connected via the twelfth jumper (47) to the fourth exit (9) of the second busbar ( 27), whose fourth exit (9) is connected via a second jumper (37) to the fifth exit (10) of the first busbar (26), whose fifth exit (10) is connected via a sixteenth jumper (51) to the sixth exit (11) of the tenth a busbar (35) whose sixth exit (11) is connected via a sixth jumper (41) to a seventh exit (12) of the ninth busbar (34) whose seventh exit (12) is connected via a tenth jumper (45) to an eighth exit (13) ) a seventh busbar (32), the eighth exit (13) of which is connected via the fourth jumper (39) to the ninth exit (14) of the fifth busbar (30), the ninth exit (14) of which is connected via the fourteenth jumper (49) to the tenth exit (15) of the eighth busbar (33). , and a tandem with a serial number equal to one increased number of busbars in the transmission field, the eleventh exit (16) of the fourth busbar (29) is connected via a seventeenth jumper (52) to the twelfth exit (17) of the sixth busbar (31). ) is connected via the seventh jumper (42) to the thirteenth exit (18) of the third busbar (28), whose thirteenth exit (18) is connected via the eleventh jumper (46) to the fourteenth exit (19) of the second busbar (27) (19) is connected via the first jumper (36) to the fifteenth exit (20) of the first busbar (26), whose fifteenth exit (20) is connected via the fifteenth jumper (50) to the sixteenth exit (21) of the tenth busbar (35) whose sixteenth exit (21) is connected via the fifth jumper (40) to the seventeenth exit (22) of the ninth busbar (34), whose seventeenth exit (22) is connected via the ninth jumper (44) to the eighteenth exit (23), a seventh busbar (32) whose eighteenth exit (23) is connected via a third jumper (38) to a nineteenth exit (24) of a fifth busbar (30) whose nineteenth exit (24) is connected via a thirteenth jumper (48) to a twentieth exit ( 25) the eighth busbar (33), where the tandem terminates. 3. Connection according to claim 1 or 2, characterized in that devices with a sequence number of more than twice the number of busbars in the transmission field and not more than three times of this number are connected one at a time to the fifteenth exit (20) of each busbar. the tandem to which the device is connected are disconnected by the fourteenth exit (19) and the fifteenth exit (20) of the respective busbars by omitting the first jumper (36), devices with a serial number greater than three times the number of busbars in the gearbox and not more than four times connected one by one to the fifth exit (10) of the individual busbars evenly across the transmission field and in the tandem to which the device is connected, the fourth exit (9) and the fifth exit (10) of the respective busbars are disconnected by omitting the second jumper (37) number greater than four times the number of connections ic in the transmission field and not more than five times this number are connected one at a time to the nineteenth exit (24) of the individual busbars and the eighteenth exit (23) and the nineteenth exit (24) are disconnected in the tandem to which the device is connected of the respective busbars by omitting the third jumper (38), devices with a sequence number more than five times the number of busbars in the transmission array and no more than six times that number are connected one at a time to the ninth exit (14) of each busbars. devices connected, the eighth exit (13) and the ninth exit (14) of the respective busbars are disconnected by omitting the fourth jumper (39), devices with a serial number greater than six times the number of busbars in the transmission field and no more than seven times this number are connected one by seventh East (22) The sixteenth exit (21) and the seventeenth exit (22) of the respective busbars are disconnected evenly across the transmission field and in the tandem to which the device is connected by omitting the fifth jumper (40), a device with a serial number greater than seven times the number of busbars in the transmission field. and not more than eight times the number are connected one at a time to the seventh exit (12) of each busbar evenly across the transmission field and the tandem to which the device is connected disconnects the sixth exit (11) and seventh exit (12) of the respective busbars by omitting the sixth jumpers (41), devices with a sequence number greater than eight times the number of busbars in the transmission field and not more than nine times that number are connected one at a time to the thirteenth exit (18) of each busbar evenly over the transmission field and in tandem to which the device is connected; are disconnected twelfth training h (17) and thirteenth exit (18) of the respective busbars by omitting the seventh jumper (42), devices with a serial number greater than nine times the number of busbars in the transmission field and no more than ten times this number are connected one by one to the third exit (8) the second exit (7) and the third exit (8) of the respective busbars are disconnected evenly over the transmission field and in the tandem to which the device is connected by omitting the eighth jumper (43).