CS262532B1 - Connection of gearboxes in the PBX to the east of the six-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 six outputs. In the basic connection of a transmission field with at least seven 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 six outputs and five jumpers. In the basic connection of a transmission field with at least four and at most six 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 per 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 connection of the transmission field, jumpers in tandems are gradually omitted and another device is connected to the east, which is the beginning of the separated 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 four busbars each having six exits.

In a PABX, some devices are centralized into a group of devices and connected via the group of busbars to other PABX devices, if their cooperation is needed to establish connections in the PABX, the group of busbars has inputs 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 searches for free equipment, for example, by examining all of its exits and testing on each of them whether the free device is connected to the east, more often searching for exits with a smaller 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 exits of the busbar group 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 the individual busbars in the transmission field, a suitable grading has the decisive effect on the good operational throughput of the transmission field, namely that more traffic exits are connected to the equipment either individually or fewer Than the less traffic-exited exits The operational throughput of the gearbox improves even interconnection of the individual busbars with each other.

The transmission field is easier to design when simple design methodology and graphic aids are worked out. 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 are better remembered 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. Easy to make 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 telephone 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. The transmission fields of similar or even identical parameters often made significantly different connections. To ensure good operational 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 the designers were mindful of the transmission field wiring, the design was relatively simple to make in the future possible changes in the transmission field. The installation and maintenance of the gearbox on the intermediate switchgear was complicated by the fact that each gearbox had a different wiring and the order of mounting of jumpers in the gearbox was not prescribed with respect to changes.

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 seven 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 one by one, the last busbars in the gearbox being considered adjacent to the first busbars. In a transmission array with at least four to a maximum of six busbars with 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 of all busbars and in the number of busbars identical in tandem, 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 field is connected to the third exit of all busbars and the fourth to sixth 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 in the transmission field. wherein the last busbar in the transmission field is considered adjacent to the first busbar.

Wiring, a transmission array with at least seven busbars with a number of devices connected equal to the number of busbars in the transmission array and a transmission array with at least four to a maximum of six busbars with a number of devices connected twice the number of busbars in the transmission array are derive, the connection of transmission fields with the same number of busbars but with a larger number of devices connected to the transmission field. This derives from the fact that, with the increasing number of devices connected to the transmission field, the first jumper of all tandems in the transmission field is gradually omitted from the basic circuit; then the second jumper of all tandems, etc. to the fifth jumper of all tandems in the transmission field. Jumpers with the same number on different tandems are omitted evenly across the transmission field. To the east, which is the beginning of a separate part of the tandem, one device always connects.

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 above type, which

in practice they can occur. 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 uniform connection 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. The assembly work in 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 individual jumpers, which is the opposite order of their possible omission while 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 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 you develop your gearbox documentation, your computer will make it easier to extend this documentation with additional information that speeds up assembly and maintenance work. 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 the transmission field with seven 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 seven busbars starting at the first exit of the first busbar where the device is connected thereto. This exit is indicated in FIG. 2 by an arrow. Fig. 3 shows schematically a transmission busbar with seven busbars to which seven devices are connected. The transmission field comprises seven tandems as shown in FIG. 2. The symbology used is the same as that of FIG. 2. FIG. The symbolism used is the same as that of FIG. 2. FIG. 5 shows schematically the exits of the transmission field with six busbars. The symbolism is the same as in Fig. 2. Fig. 5 also depicts a first tandem in a six-busbar transmission array, beginning at the first exit of the first busbar where the device is connected to it, and a seventh tandem, starting at a third exit the first busbar where the device is connected to it. FIG. 6 is a schematic of a six-busbar transmission field to which twelve devices are connected. The transmission field comprises twelve tandems according to FIG. 5. The symbolism is the same as that of FIG. 2. FIG. 7 schematically shows the exits of a transmission field with four busbars. The symbolism is the same as in Fig. 2. Fig. 7 also shows a first tandem in a transmission array with at least four to a maximum of five busbars starting at the first exit of the first busbar where the device is connected thereto and in the same transmission array with a tandem with a sequence number equal to one increased number of busbars in the transmission field, starting at the third exit of the first busbar, where the device is connected thereto. Figure 8 schematically shows 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.

The seven-busbar transmission field (Fig. 3), to which seven devices are connected, is connected by seven identical tandems that are cyclically repeated over the busbars.

Each tandem connects the six exits of the transmission field with five jumpers. It starts at the first exit 6 of the respective busbar where the device is connected to it. By describing the connection of the first tandem in the transmission field, which begins at the first exit 2 of the first busbar 16, the connection 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. The first exit 2 of the first busbar 16 is connected via the second jumper 28 to the second exit 7 of the third busbar 18. whose second exit 2 is connected via the first jumper 27 to the third exit 2 of the second bus bar 17, the third exit 2 j ^e is connected through the fourth coupler 30 to the fourth exit the fifth bus bar 20, the fourth outlet 9 is connected via a third coupler 29 with the fifth exit 10 the sixth bus bar 21, the fifth outlet 10 is connected via the fifth coupler 31 is through the sixth exit 11 of the seventh busbar 22 where it is terminated by tandem.

The second tandem in the transmission field of FIG. 3 starts at the first exit 2 of the second busbar 17 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 larger, except for the sixth exit 11 of the first busbar 12. » Similarly, the wiring of all the remaining five tandems in the transmission field shown in FIG. 3 can be described.

A seven-busbar and seven-wired gear array wiring is the basic wiring for seven-busbar but more than seven wired devices. One of them is a transmission array with seven busbars and eighteen connected devices, shown in Fig. 4. In the transmission array, seven devices are connected to the first exit 2 of all busbars, as in the basic circuit in Fig. 4.

the eighth to fourteenth devices are connected to the third exit 8 of all busbars and the first jumper 27 is omitted in all seven tandems of the basic wiring (FIG. 3), with ^the second exit 2 ^{and the} third exit 2 of the respective busbars disconnected in all tandems. The remaining fifteenth to eighteenth devices are connected to the second exit 2 of the first busbar 16, the third busbar 12, the fifth busbar 20 and the seventh busbar 22 ^{in the} basic wiring tandem (Fig. 3) to which the last four devices are connected. second jumper 28. ⁱⁿ the first tandem are disconnected by the first East 2 first bus bar 16 and second East 2, third busbar 18. ⁱⁿ the third tandem are disconnected by the first exit 6 of the fifth bus bar 20 and the second exit 2 of seventh busbars 22 · sixth ⁱⁿ tandem that are disconnected the first exit 2 of the sixth busbar 21 and the second exit 2 of the first busbar 16.

The six busbar transmission array (Fig. 6), on which twelve devices are connected, is connected using twelve tandAns, six and six of which are identical and which are cyclically repeated over the busbars in the transmission array. Each tandem of the first six 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 2 of the first busbar 16, all the tandems of the first six 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 seven busbars (Figure 2). It has a first exit 2 of the first busbar 16 connected via a second jumper 36 to the second exit 2 of the third busbar 12 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, the wiring of all the remaining four tandems of the first six in the transmission array shown in FIG. 6 can be described.

Each tandem of the other six in the transmission field shown in FIG. 6 starts at the third exit 2 of the respective busbar where the device is connected to it. By describing the connection of the seventh tandem in the transmission field starting at the third exit 2 of the first busbar 16, all the tandems of the second six in FIG. 6 will be described.

The seventh tandem in the transmission field of FIG. 6 is shown in FIG. 5. It is analogous to a portion of the first tandem in the transmission field with at least seven busbars (FIG. 2). My third east two first bus bar 16 is connected through the fourth coupler 38 to the fourth exit 2 fourth busbars 12 »whose fourth exit 2 j ^e connected across jumper 37 with the fifth exit 10 the fifth bus bar 20, the fifth outlet 10 is connected via the fifth coupler 39 the sixth exit 11 of the sixth busbar 21 where it is terminated by the tandem.

The eighth tandem in the transmission field (Fig. 6) starts at the third exit 8 of the second busbar 17. Its wiring is analogous to the seventh tandem circuit described above, only the busbar serial number of all exits in the tandem is one busbar except for the sixth exit 11 of the first busbar. 16, since in the cyclic connection, the first busbar 16 is considered to be following the last, sixth busbar 22. Similarly, the connection of all remaining four tandem of the second six in the transmission field shown in FIG. 6 can be described.

A six-busbar and twelve-wired gear array wiring is a basic wiring for six-busbar but more than twelve wired devices.

Transmission field with four busbars (Fig. 8), which is connected by means of eight tandems, of which four are identical, and which are repeated cyclically along the busbars in the transmission field. Each tandem of the first four starts at the first exit 2 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 the tandems of the first six will be described.

The first tandem of the transmission field in Fig. 8 is shown in Fig. 7. It is identical and corresponding to the part of the first tandem in the transmission field with at least seven busbars (Fig. 2). It has a first exit 6 of the first busbar 16 connected via a second jumper 36 to the second exit 2 of the third busbar 22 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 above described connection of the first tandem, only the serial number of the busbar of both exits in the tandem is one busbar larger. Similarly, the connection 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 2 of the respective busbar where the device is connected to it. By describing the connection of the fifth tandem in the transmission field, which begins at the third exit 2 of the first busbar 16, all tandems from the second quadruple in FIG. 8 will be described.

Fifth tandem in the gear box of FIG. 8 is illustrated in FIG. 7. The third outlet has two first bus bar 16 is connected through the fourth coupler 45 to the fourth exit 2 of the second busbar 17, the fourth outlet ³ and 2 connected via a third coupler 44 with the fifth exit 10 of the third busbar 2, whose fifth exit 10 is connected via the fifth jumper 46 to the sixth exit 11 of the fourth busbar 22, where it is terminated by tandem.

the sixth tandem in the transmission field (Fig. 8) starts at the third exit B of the second busbar 17. Its connection is analogous to the above described connection of the fifth tandem, only the busbar serial number of all exits in the tandem is one busbar except for the sixth exit 11 of the first busbar 16, since in the cyclic connection, the first busbar 16 is considered to be following the last, fourth busbar 19. Similarly, the connection of the two remaining tandems of the second quaternion 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 (2)

OBJECT OF THE INVENTION 1. Connection of transmission fields in a telephone exchange at the exits of a group of six busbar outlets per busbar, characterized in that in a transmission field with at least seven busbars to which a number of devices equal to the number of busbars in the transmission field are connected, the first exit (6) of all busbars and the other exits of the transmission field are to these devices in the number of busbars identical to tandems starting at the first exit (6) of all busbars and repeating cyclically on individual busbars. busbars, and in a gearbox with at least four to a maximum of six busbars, where a number of devices equal to twice the number of busbars in the gearbox is connected, the number of devices equal to the busbars in the gearbox is connected to the first exit (6) of all busbars; the left exit (7) of all busbars is connected to these devices in the number of busbars of the same 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; a device equal to the number of busbars in the transmission field is connected to the third exit (8) of all busbars and the fourth exit (9) to the sixth exit (11) of all busbars are connected to these devices in the same tandem busbar post starting at the third exit (8) of busbars and repeating cyclically on individual 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 a transmission field with at least seven busbars by a first tandem, the first exit (6) of the first busbar (16) is connected via a second jumper (28) to the second exit (7) of the third busbar (18). whose second exit (7) is connected via the first jumper (27) to the third exit (8) of the second busbar (17), whose third exit (8) is connected via the fourth jumper (30) to the fourth exit (9) of the fifth busbar (20Ϊ) wherein the fourth exit (9) is connected via a third jumper (29) to the fifth exit (10) of the sixth busbar (21), the fifth exit (10) is connected via the fifth jumper (31) to the sixth exit (11) of the seventh busbar ( 22), where the first tandem ends. 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), devices with a serial number greater than twice the number of busbars in the transmission field and not more than three times one to the other exit (7) of the 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); more than three times the number of busbars in the gearbox and not more m more than four 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 fifth exit (10) 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 by one to the fourth exit (9) of individual busbars evenly across the transmission field and disconnected in the tandem to which the device is connected the third exit (8) and the fourth exit (9) of the respective busbars by omitting the fourth jumper (30), devices with a serial number greater than five times the number of busbars in the transmission field and no more than six times this number are connected one at a time busbars evenly over the transmission The fifth exit (10) and the sixth exit (11) of the respective busbars are disconnected by omitting the fifth jumper (31) in the field and in the tandem to which the device is connected. 4. Connection according to claim 1, characterized in that in a six-busbar transmission field by 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 the first termination tandem, and the seventh tandem has a third exit (8) of the first busbar (16) connected via a fourth jumper (38) to the fourth exit (9) of the fourth busbar (19 whose fourth exit (9) is connected via a third jumper (37) with the fifth exit (10) of the fifth busbar (20), the fifth exit (10I) being connected via the fifth jumper (39) to the sixth exit (11) of the sixth busbar (21), where it is terminated by tandem. Wiring according to Claims 1 and 4, characterized in that devices with a sequence number greater 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 (7) of the individual busbars. 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 fifth exit (10) of the individual busbars evenly over 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 third jumper (37) a number greater than four times the number of busbars in the transmission and no more than five times this number are connected one at a time to the fourth exit (9) of the individual busbars evenly over 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 fourth jumper (381, devices with a sequence number greater 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 sixth exit (11) of each busbar evenly across the transmission field and tandem to which the device is connected , the fifth exit (10) and the sixth exit (11) of the respective busbars are disconnected by omitting the fifth jumper (39). 6. Connection according to claim 1, characterized in that in a transmission field with at least four to at most five busbars by 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), where the first tandem terminates, and a tandem with a serial number equal to one increased number of busbars in the transmission field equal to one increased number of busbars in the transmission field has a third exit (8) of the first busbar (16) connected via a fourth jumper (45) a fourth exit (9) of the second busbar (17), the fourth exit (9) of which is connected via a third jumper (44) to the fifth exit (10) of the third busbar (18), whose fifth exit (10) is connected via a fifth jumper ( 46) with the sixth exit (11) of the fourth busbar (191), where the tandem terminates. Wiring according to items 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 fifth exit (10) of 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 third jumper (44) a number greater than four times the number of busbars in the transmission and no more than five times this number are connected one at a time to the fourth exit (9) of the individual busbars evenly over 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 fourth jumper (45), devices with a sequence number greater than five times the number of busbars in the gearbox and no more than six times that number are connected one at a time to the sixth exit (11) of each busbar evenly across the gearbox and in tandem connected, the fifth exit (10) and the sixth exit (11) of the respective busbars are disconnected by omitting the fifth jumper (46). 2 drawings