CS262531B1 - Wiring the transmission fields in the PBX at the exits of the five-bay busbar group - Google Patents

Abstract

The solution concerns the connection of the transmission fields in a telephone exchange at the outputs of a group of busbars, each of which has five outputs. In the basic connection of a transmission field with at least six busbars, the number of devices connected to the transmission field is equal to the number of busbars in the transmission field. The devices are connected to the first output of all busbars and the other busbar outputs are connected to these devices in cyclic tandems with five outputs and four jumpers. In the basic connection of a transmission field with four or five busbars, the number of connected devices is equal to twice the number of busbars in the transmission field and the devices are connected to the first and third outputs of all busbars. The other busbar outputs are connected to these devices in cyclic tandems, the number of which is equal to the number of connected devices on the transmission field. The connection of a transmission field with the same number of busbars but with a larger number of connected devices is derived from the basic connection. From the basic wiring of the transmission field, jumpers in tandems are gradually omitted and another device is connected to the east, which is the beginning of the separate part of the tandem.

Description

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

In a PABX, some devices are centralized into a group of devices and connected via a group of busbars to other PABX devices when their collaboration is needed to establish a connection 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.

The busbar looks for a free device, for example, by examining all its exits and testing on each of them whether the free device is connected to the east, often searching through the smallest serial number in the busbar. This implies that exits with a smaller serial number in the busbar are more frequently occupied than exits with a larger serial number.

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 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 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 individual busbars exits in the transmission field, a suitable escalation is a decisive factor in the good operational throughput of the transmission field, in that the more traffic-exiting exits are connected individually to the device or less exits less loaded. The operational throughput of the transmission field also improves the uniform interconnection of the individual busbars.

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 advantageous 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 need to consult the documentation frequently. 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 to the transmission field is a very important requirement for the transmission field, since these changes are made quite often due to changes in the telephone network.

It is desirable that as many jumpers remain as possible when changing the transmission field.

The design of the transmission field should make it clear that the jumpers are mounted in such a way that the jumpers do not interfere with the removal of some of them in order to increase the number of 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. The transmission fields of similar or even identical parameters often had significantly different connections. In order to ensure good transmission throughput of the transmission field, only the design principles for gradation and uniformity in the interconnection of the individual busbars should be respected in the design. However, the design was not examined by computer modeling, so the actual throughput of the proposed transmission field was only hypothetical. 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 jumpers in the gearbox was not prescribed with respect to the changes being made. 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 viable to remodel the entire transmission field due to a small change in the group of devices.

The above-mentioned disadvantages are overcome by the connection of the transmission fields according to the invention, which consists in that in a transmission field with at least six busbars to which a number of devices equal to the number of busbars in the transmission field is connected, the other exits of the transmission field 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 busbar in the transmission field being considered to be adjacent to the first busbar. In a transmission array with at least four to a maximum of five busbars, with a number of devices equal to twice the number of devices equal to twice the number of busbars in the transmission field, the number of devices equal to the number of busbars in the gearbox is connected to the first exit of all busbars; These devices are connected in a number of bus bars identical in tandem, starting at the first exit of all bus bars and repeating cyclically in individual bus bars, the last bus bar in the transmission field being considered to be adjacent to the first bus bar.

The remaining number of devices equal to the number of busbars in the transmission array is connected to the third exit of all busbars and the fourth to fifth exit of all busbars are connected to these devices in the number of busbars identical to tandems starting at the third exit of all busbars and repeating cyclically on individual busbars. the busbar in the transmission field is considered to be adjacent to the first busbar.

A circuit board connection with at least six busbars with a number of devices connected equal to the number of busbars in a transmission field and a transmission field connection with at least four to a maximum of five busbars with a number of devices connected twice the number of busbars in a transmission array are essential connections according to the invention transmission fields with the same number of busbars but with a larger number of devices connected. This derivation consists in the fact that with increasing number of devices connected to the transmission field, the first jumper of all tandems in the transmission field, then the second jumper of all tandems, etc. to the fourth jumper of all tandems in the transmission field are gradually omitted from the basic connection. Jumpers with the same serial number for 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 reside in the fact 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,

can occur. Each transmission field is well operationally permeable, which is achieved by suitable gradation and 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.

The even greater effect of engaging the transmission fields according to the invention is achieved by the fact that all transmission fields form a uniform wiring 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 added 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 has drawn 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. Administrative and researchers will find in the catalog for study purposes the involvement of transmission fields that have not yet been designed.

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 a transmission field with six 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 six busbars starting at the first exit of the first busbars where the device is connected thereto. This exit is indicated in FIG. 2 by an arrow. FIG. 3 schematically illustrates a transmission bar with six busbars to which six devices are connected. The transmission field comprises six tandems as shown in FIG. 2. The symbology used is the same as that of FIG. 2. FIG. 4 schematically illustrates a transmission bar with six busbars to which fifteen devices are connected. The symbolism used is the same as in FIG. 2. FIG. 5 schematically illustrates the exits of the transmission field with five busbars. The symbolism is the same as in Fig. 2. Fig. 5 also shows a first tandem in a five-bus gearbox, starting at the first exit of the first busbar where the device is connected thereto, and a sixth tandem starting at the third exit in the same gearbox. the first busbar where the device is connected to it. FIG. 6 is a schematic representation of a five-busbar transmission field to which ten devices are connected.

The symbolism is the same as that shown in FIG. 2. Schematically illustrated exits of the transmission field with four busbars.

as in FIG. 2. FIG. 7 also shows a first tandem in a four-busbar transmission array, starting at the first exit of the first busbar where the device is connected thereto, and a fifth tandem, starting at a third exit of the first busbar; where the device is connected to it. Figure 8 schematically illustrates a four-busbar transmission field to which eight devices are connected. The transmission field comprises eight tandems according to Fig. 7. The symbolism is the same as in Fig. 2.

Transmission Field In Figure 7, the symbolism is the same

The six-busbar transmission field (Fig. 3), to which six devices are connected, is connected using six identical tandems that are cyclically repeated over the busbars. Each tandem connects the five exits of the transmission field with four jumpers. It starts at the first exit 6 of the respective busbar where the device is connected to it. By describing the engagement of the first tandem in the transmission field starting at the first exit 6 of the first busbar 16, the engagement of the entire transmission field in FIG. 3 will be described.

The first tandem of the transmission field in FIG. 3 is shown in FIG. 2. It has a first exit 6 of the first busbar 16 connected via a second jumper 28 to a second exit 8 of the third busbar 18, whose second exit 6 is connected via a first jumper 27 to a third exit the busbar 17, the third outlet of which is connected via a third jumper 29 to the fourth outlet of the fifth busbar

20, the fourth exit of which is connected via the fourth jumper 30 to the fifth exit of the sixth busbar 21, where it is terminated by tandem.

The second tandem in the transmission field of FIG. 3 starts at the first exit 6, the second busbar 17, where the device is connected thereto. 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 fifth exit 10 of the first busbar 16, since in cyclic connection the first busbar 16 is considered following the last, sixth busbar.

Similarly, the wiring of all remaining four tandems in the transmission field shown in FIG. 3 can be described.

Wiring with six busbars and six devices connected is a basic wiring for six busbars, but with more devices than six. One of them is a transmission array with six busbars and fifteen connected devices, shown in Fig. 4. In the transmission array, six devices are connected to the first exit of all busbars, as in the basic wiring in Fig. 3. The seventh to twelfth devices are connected at the third exit 6 of all busbars and in all six tandems of the basic wiring (FIG. 3), the first jumper 27 is omitted, so that the second exit 6 and the third exit 6 of the respective busbars are disconnected in all tandems. The remaining thirteenth to fifteenth devices are each connected to the second exit 8 of the first busbar 16, the third busbar 18 and the fifth busbar 20. In the tandem of the basic circuit (FIG. 3) to which the last three devices are connected, the second jumper 28 is omitted. In the first tandem, the first exit 8 of the first busbar 16 and the second exit 8 of the third busbar 18 are thereby disconnected.

In the fifth tandem, the first exit 8 of the fifth busbar 20 and the second exit 8 of the first busbar 16 are thereby disconnected.

The five busbar transmission array (Fig. 6), to which ten devices are connected, is connected using ten tandems of which five and five are identical and which are cyclically repeated over the busbars in the transmission array. Each tandem of the first five starts at the first exit 6 of the respective busbar where the device is connected to it. By describing the engagement of the first tandem in the transmission field starting at the first exit 6 of the first busbar 16, all tandems of the first five will be described.

The first tandem of the transmission field in Figure 6 is shown in Figure 5. It is identical to the corresponding part of the first tandem in the transmission field with at least six busbars (Figure 2). It has a first exit 6 of the first busbar 16 connected via a second jumper 36 to a second exit 8 of the third busbar 16 where it is terminated by tandem.

The second tandem in the transmission field (FIG. 6) begins at the first exit 6 of the second busbar

17. Its connection is analogous to the first tandem connection described above, only the serial number of the busbar of both exits in the tandem is one busbar larger. Similarly, all the remaining three tandems of the first five in the transmission field shown in FIG. 6 can be described.

Each tandem of the other five in the transmission field shown in FIG. 6 starts at the third exit 6 of the respective busbar where the device is connected to it. By describing the connection of the sixth tandem in the transmission field starting at the third exit 6 of the first busbar 16, all the tandems of the second five in FIG. 6 will be described.

The sixth tandem in the transmission field of FIG. 6 is shown in FIG. 5. It is analogous to the corresponding portion of the first tandem in the transmission field with at least six busbars (FIG. 2). It has a third exit 6 of the first busbar 16 connected via a third jumper 37 to a fourth exit 8 of the fourth busbar 19, the fourth exit of which is connected via a fourth jumper 38 to the fifth exit 10 of the fifth busbar 20 where it is terminated by tandem.

The seventh tandem in the transmission field (Fig. 6) starts at the third exit 6 of the second busbar 17. Its wiring is analogous to the sixth tandem wiring described above, except that the busbar serial number of all exits in the tandem is one more busbar. 16, since in cyclic connection, the first busbar 16 is considered to be following the last, fifth busbar 20. Similarly, the wiring of all remaining three tandems of the second five in the transmission field shown in FIG. 6 can be described.

A wiring box with five busbars and ten wired devices is the basic wiring for five wiring box but with more than ten wired devices.

The four busbar transmission array (Fig. 8), to which eight devices are connected, is connected by eight tandems, of which four are identical, and which are cyclically repeated over the busbar in the transmission array. Each tandem of the first four starts at the first exit 6 of the respective busbar where the device is connected to it. By describing the tandem engagement in the transmission field starting at the first exit £ of the first busbar £ 6, all tandems from the first four will be described.

The first tandem of the transmission field in Fig. 8 is shown in Fig. 7. It is identical to the corresponding part of the first tandem in the transmission field with at least six busbars (Fig. 2). It has a first exit 6 of the first busbar 16 connected via a second jumper 36 to a second exit 8 of the third busbar 48 where it is terminated by tandem.

The second tandem in the transmission field (FIG. 8) starts at the first exit 6 of the second busbar

17. Its connection is analogous to the first tandem connection described above, only the serial number of the busbar of both exits in the tandem is one busbar larger. Similarly, the engagement of the two remaining tandems from the first four in the transmission field shown in FIG. 8 can be described.

Each tandem of the second quaternion in the transmission field shown in FIG. 8 starts at the third exit 6 of the respective busbar where the device is connected to it. By describing the engagement of the fifth tandem in the transmission field starting at the third exit 6 of the first busbar 16, all tandems from the second quadruple in FIG. 8 will be described.

The fifth tandem in the transmission field of FIG. 8 is shown in FIG. 7. It has a third exit 6 of the first busbar 16 connected via a third jumper 44 to a fourth exit 8 of the fourth busbar 19 whose fourth exit 6 is connected via a fourth jumper 45 to a fifth exit 10 third busbar

18, where the tandem is terminated.

the sixth tandem in the transmission field (Fig. 8) starts at the third exit druhé of the second busbar 17. Its wiring is analogous to the fifth tandem wiring described above, except that the busbar serial number of all exits in the tandem is one busbar larger, 6, since in the cyclic connection, the first busbar 16 is considered to be following the last, fourth busbar 89. Similarly, the engagement of the two remaining quads from the other four in the transmission field shown in FIG. 8 can be described.

Wiring with four busbars and eight devices connected is a basic wiring for four busbars, but more than eight wiring devices.

Claims (7)

1. Connection of transmission fields in a telephone exchange at the exits of a group of five busbar outlets from one busbar, characterized in that in a transmission field with at least six busbars nd having a number of devices equal to the number of busbars in the transmission field, the first exit (6) of all busbars and the other exits of the transmission field are connected to these devices in the number of tandem busbars starting at the first exit (6) of all busbars and repeating cyclically on individual busbars. the first busbar, and in the transmission array with at least four to a maximum of five busbars that have a number of devices equal to twice the number of busbars in the transmission array, the number of devices equal to the number of busbars in the transmission array is connected to the first exit (6) the busbars and the second exit (7) of all busbars are connected to these devices in a number of busbars identical in tandem, starting at the first exit (6) 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 are connected to the third exit (8) of all busbars and the fourth exit (9) to the fifth exit (10) of all busbars are connected to these devices in tandem busbars starting at the third exit (8) ) of all busbars and repeating cyclically on individual busbars, the last busbars in the transmission field being considered to be adjacent to the first busbars. 2. Connection according to claim 1, characterized in that in the transmission field with at least six busbars the first tandem has the first exit (6) of the first busbar (16) connected via a second jumper (28) to the second exit (7) of the third busbar (18). the second exit (7) of which is connected via a first jumper (27) to the third exit (8) of the second busbar (17), the third exit (8) of which is connected via the third jumper (29) to the fourth exit (9) of the fifth busbar ( 20), its fourth exit (9) is connected via a fourth jumper (30) to the fifth exit (10) of the sixth busbar (21), where it is terminated by the first tandem. 3. Wiring according to items 1 and 2, characterized in that devices with a sequence number greater than the number of busbars in the transmission field and not more than twice this number are connected one at a time to the third exit (8) of the individual busbars. to which the device is connected, the second exit (7) and the third exit (8) of the respective busbars are disconnected by omitting the first jumper (27), the devices having a serial number greater than twice the number of busbars in the transmission field and not more than three times connected one by one to the other exit (7) of individual busbars evenly across the transmission field and in the tandem to which the device is connected, the first exit (6) and the second exit (7) of the respective busbars are disconnected by omitting the second jumper (28) a number greater than three times the number of busbars in the gearbox and not greater m more than four times this number are connected one at a time to the fourth exit (9) of the individual busbars evenly across the transmission field and the third exit (8) and the fourth exit (9) of the respective busbars are disconnected in the tandem to which the device is connected by omitting the third jumper ( 29), devices with a sequence number greater than four times the number of busbars in the transmission field and no more than five times that number are connected one at a time to the fifth exit (10) of each busbar evenly across the transmission field and disconnected in the tandem to which the device is connected the fourth exit (9) and the fifth exit (10) of the respective busbars by omitting the fourth jumper (30). 4. Connection according to claim 1, characterized in that, in a five-busbar transmission array, the first busbar (6) has a first busbar (16) connected via a second jumper (36) to a second busbar outlet (7) of a third busbar (18). is terminated by the first tandem, and the sixth tandem has a third exit. (8) the first busbar (16) is connected via a third jumper (37) to the fourth exit (9) of the fourth busbar (19) whose fourth exit (9) is connected via a fourth jumper (38) with the fifth exit (10) of the fifth busbar (20) where the tandem terminates. 262531 θ Wiring according to items 1 and 4, characterized in that the devices with a sequence number of more than ten and not more than fifteen are connected one by one to the other exit (7) of the individual busbars evenly over the transmission field and in tandem to which the device is connected , the first exit (6) and the second exit (7) of the respective busbars are disconnected by omitting the second jumper (36), devices with a serial number greater than fifteen and not more than twenty are connected one by one to the fourth exit (9) of each busbar and in the tandem to which the device is connected, the third exit (8) and the fourth exit (9) of the respective busbars are disconnected by omitting the third jumper (37), devices with a sequence number greater than twenty and no more than twenty-five are connected one by one exit (10) of individual busbars evenly over the transmission field and in tandem to which the device is located and connected, the fourth exit (9) and the fifth exit (10) of the respective busbars are disconnected by omitting the fourth jumper (38), 6. Connection according to claim 1, characterized in that in a four-busbar transmission field with a first tandem, the first exit (6) of the first busbar (16) is connected via a second jumper (36) to the second exit (7) of the third busbar (18). is terminated by the first tandem, and the fifth tandem has the third exit (8) of the first busbar (16) connected via a third jumper (44) to the fourth exit (9) of the fourth busbar (19) whose fourth exit (9) is connected via a fourth jumper ( 45) and the fifth exit (10) of the third busbar (18), where the tandem terminates. Wiring according to Claims 1 and 6, 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 the number are connected one at a time to the other outlet (7) of each busbar. the tandem to which the device is connected disconnects the first exit (6) and the second exit (7) of the respective busbars by omitting the second jumper (36), the devices having a serial number greater than three times the number of busbars in the transmission field and not more than four times this number connected one by one to the fourth exit (9) of individual busbars evenly across the transmission field and in the tandem to which the device is connected, the third exit (8) and the fourth exit (9) of the respective busbars are disconnected by omitting the third jumper (44) a number greater than four times the number of busbars in the transmission m, and not more than five times this number, are connected one at a time to the fifth exit (10) of each busbar evenly across the transmission field and the fourth exit (9) and the fifth exit (10) of the respective busbars are disconnected in the tandem to which the device is connected omitting the fourth jumper (45).