NL1010237C2 - Method and device for expanding the capacity of a main distributor of a telephone exchange without increasing the main distributor. - Google Patents

Description

Title: Method and device for expanding the capacity of a main switchboard operator without increasing the main switchboard.

A. Background of the invention

The invention relates to a method for expanding a main distributor in a telecommunication exchange, wherein the main distributor has a first rack with first connection points for connecting groups of cores of external cables and second connection points for connecting so-called cross wires, and a second rack with third terminals for connecting the cross wires and fourth terminals for connecting groups of conductors of internal connection cables of switchgear, and 10 wherein second terminals connected to the first terminals are optionally connected to the fourth terminals by means of cross wires connected third connection points on the second rack, the main divider being provided with separating strips between the third and fourth connection points on the second rack, the separating strips being provided with interrupting points which are adapted to receive separating members d At rest, adjacent contacts, which each connect a third and fourth connection point, are separated, which method comprises inserting a separating member into a separating strip.

Such a method is known from practice. The subscriber cables (external cables), bundled in ground cables, are mounted via inner cables on the so-called "vertical side" (first rack) of the main distribution frame (MDF). The 25 connection cables (internal cables) of the switching equipment (or equipment for fixed connections) are mounted on the so-called "horizontal side" (second rack). The subscriber cable (group of wires) on the vertical side provides a physical identification of the subscriber connection. In the case of an (electro) mechanical exchange, the cable (group of cores) on the horizontal side is related to the subscriber number. The dividing strips were previously used to temporarily close defaulters with an interruption stop. Closing a subscriber in this way is no longer done nowadays, because it is required that a closed subscriber can also reach the emergency number (112 in the Netherlands). In the current p101023 7 2 telephone exchanges, the shutdown is done with software.

Developments such as offering different services (introduction of new transmission techniques) and giving access to 5 (switching) equipment from others require greater capacity at the main distributor.

A (subscriber) cable, which was previously only used for a telephone connection, can now also be used simultaneously for a telephone connection and a broadband connection or for 10 single telephone connections via a broadband connection. For example, when using ADSL (Asymmetry Digital Subscriber Line), a high-frequency ADSL (data) connection is added to a low-telephony (voice) connection on a subscriber's cable. This means that the subscriber cable must be connected via the main distributor to additional equipment 15 (filters) and hence at least the cable for the telephone connection again via the main distributor (so at the expense of connection points), and from there bundled with other cables in an internal connection cable , is connected to the associated equipment (telephony switching equipment or ADSL equipment). The introduction of 20 new services could therefore create the problem that the capacity of a main distributor is insufficient.

For the sake of completeness, it is hereby noted that it is improper and for normal application also practically impracticable to include additional equipment in series in the crosshair between the first and the second rack.

The aforementioned associated equipment may be equipment of others and / or own equipment and may possibly be located in a different room, so for example telephony equipment of others in a side room and own ADSL equipment -added- in the main distribution room. The additional equipment may include low-pass flashes for the telephone voice signal and high-pass flashes for the data signal. In practice, the high-pass flashes will often be built into the ADSL equipment, or the aforementioned cable between filters and ADSL equipment is "virtually" present.

As a result of the aforementioned developments, there is therefore a clear need to increase the capacity of the main distributor. In practice, extension of the main distributor often turns out to be no longer possible »101023 7 3 due to physical limitations such as the length of the main distributor room, while in all cases there is actually sufficient space in the main distributor room to place equipment (eg against a wall) .

B. Summary of the invention

The object of the invention is to eliminate the above and other disadvantages of the prior art and to provide a method which makes it possible to expand the capacity of a main distributor without increasing the main distributor. The method according to the invention is therefore characterized in that the separating members are arranged for connecting two groups of cores to the contacts in each case, such that a first group of cores is connected to the contacts which are connected to the third terminal and a second group of cores is connected to the contacts connected to the fourth terminal, and that the method comprises connecting additional equipment to the groups of wires of the separator.

The insertion of a separating member into the separating strip is known per se: as mentioned above, the separating strips were previously used to, for example, temporarily close off defaulters with an interruption plug. The goal was to temporarily interrupt the connection. In accordance with the invention, however, separators are used which are arranged for connecting groups of cores, whereby the separating of the contacts serves to connect the additional equipment.

Incidentally, German plug DE 4,005,484 discloses a plug for insertion into a separating strip of a main distributor. This plug is intended for temporary measuring setups and has a permanently connected connecting cord which, in order to prevent the cord from kinking when inserting and removing the plug, is fitted with an anti-kink protection cover at the plug ("Knickschutztülle") . It should be noted that such a pre-bonded connector cord is practically useful only for relatively short cords fitted outside the fixed wire bed with cross-threads, and that an anti-kink sheath is useful for pre-bonded connector cords for use in temporary * 101 023 7 4 setups. Such cords outside the fixed wire bed are easily unintentionally pulled out of the rack in passing. Expanding the capacity of a main distributor is not suggested by the aforementioned German patent.

Furthermore, German patent application DE 4,402,365 discloses the use of a plug in the preparation and implementation of changes in the wiring of a distributor. There is no question of inserting the plug into a separating strip, the plug is connected directly to the wires. Nor is there talk of expanding the capacity of a main distributor. This plug is used when changing the fixed connection of crosshair. With the plug, both a cross wire parallel to the existing physical connection and a cross wire parallel to the new physical connection to be made are temporarily provided, after which the connection of the fixed cross wire 15 can be changed without breaking the standing connection of the subscriber. It is a relatively primitive plug, to which the crosshair is fixed. Incidentally, it is noted that when using high-frequency signals in this configuration, interference may occur due to the length of parallel wires.

With the method according to the invention it is possible to increase the capacity of the main distributor without physical extension of the main distributor. In this way, additional equipment can be connected without using additional connection points from the main distributor. The mere inclusion of additional equipment in series in connection 25 is advantageous, because placing additional equipment with the (switching) equipment is impossible or expensive: bundling the groups of cores in a connecting cable means that the cores are physically inaccessible and expand of the power plant is a costly alternative. The additional cross wires can be added to the existing wire bed without any objection. This also has the advantage that the wires cannot be accidentally pulled out of the rack in passing. These wires are fed to the top of the main distributor and from there (via a cable duct) to the additional equipment; this extra wires are led through the wire bed above 35 - via the top - to, for example, a wall, it is called a pinafore.

In the method according to the invention, the additional equipment is advantageously provided with connection points for the first group of wires of the separator on the one hand and for the second group of wires of the separator and / or groups of wires of internal connection cables on the other hand. of additional equipment, in order to increase the number of second rack terminals for connecting groups of cores 5 of internal equipment connection cables.

With this method it is possible to further increase the capacity of the main distributor without physical extension of the main distributor. In this way it is possible to connect wires of the additional equipment directly to additional equipment, without using additional connection points of the main distributor. E.g. in the case of the aforementioned application of ADSL, in which a high-frequency ADSL connection is added to the wires for the connection of a single telephone subscriber to a low-frequency telephone connection, this means that the internal wires for the telephone connection of the additional equipment via the original connection of the horizontal side of the main distributor (ie without additional capacity required), are connected to the switchgear, while the wires for the ADSL connection of the additional equipment are led directly to the internal 20 ADSL equipment. If possible, your own additional equipment is preferably placed in the main distribution room.

The invention also relates to a main distributor for a telecommunication exchange, the main distributor being extended as described above.

The invention also relates to a telecommunication exchange, provided with a main distributor, which has been extended as described above.

The invention also relates to a separating member, comprising a body of electrically insulating material and at least one electrically conducting member incorporated therein, for use in a method as described above. This separator is characterized in that a first electrically conductive set of members incorporated therein is connected to the first group of wires and a second electrically conductive set of members incorporated therein is connected to the second group of wires for connecting the additional equipment.

An advantageous embodiment of the separating member is characterized in that the electrically conductive members have an attachment point p1 0 1 0 p3 i 6 for connecting the additional equipment.

A further advantageous embodiment of the separating member is characterized in that the fixing point of the electrically conducting members is equipped with gaff feats for connecting the additional equipment.

A further advantageous embodiment of the separating member is provided with a marking mark such that the separating member can easily be inserted into the interrupting point in the correct position.

The invention has the great advantage that it enables the permanent connection of equipment. The invention makes it possible to expand the main distributor without the main distributor itself increasing in size. It is also achieved that the building in which the plant is housed does not have to be changed. An extension according to the invention is less expensive and can be realized in the short term. Moreover, this is easy to carry out for mechanics.

A further advantage over other solutions is that the existing cabling registration can be easily modified; it is sufficient to signal the extra branch at the connections 20 in the already existing administration, while the details are housed in a separate administration.

C. Brief description of the drawings. The invention will be further elucidated on the basis of exemplary embodiments shown in the figures.

Fig. 1 schematically shows a prior art main distributor.

Fig. 2 schematically shows a separating strip of the main distributor of FIG. 1.

Fig. 3 shows a first connection diagram for additional equipment according to the invention.

Fig. 4 shows a second connection diagram for additional equipment according to the invention.

FIG. 5 schematically shows a preferred embodiment of a separating member according to the invention.

Fig. 6 shows a fork for use in the separator of FIG. 5.

»101023 7 7 D. Implementation examples

The one shown in FIG. 1, the main divider 1 is shown schematically and by way of example only and includes a first rack 2 and a second rack 8, which are in immediate proximity to each other. Groups 5 cores 4 of external cables 5 are mounted on the first terminals 3 of the first rack 2; a group of wires concerns (the wires for) the physical connection of a subscriber. Groups of wires 11 of internal cables 12 are mounted on the fourth terminals 10 of the second rack 8; a group of cores concerns the internal connection of a subscriber, so in the case of an (electro) mechanical exchange it concerns the cores of a subscriber number of the (electro) mechanical switching equipment. In practice, the connection points on a rack are, for example, combined in strips of blocks with connection points. Cross wires 7 are arranged between the second connection points 6 of the first rack 2 and the third connection points 9 of the second rack 8. On the first rack 2, the first connection points 3 are connected to the second connection points 6. On the second rack 8 the third connection points 9 interconnected with the fourth connection points 10 via a separating strip 13. The cross wires 7 thus establish a fixed relationship between a subscriber connection, to be chosen from the subscriber connections present on the main distributor, and a subscriber number, dial from the subscriber numbers available at the main distribution.

In FIG. 2, an embodiment of a separating strip 13 is schematically shown in more detail. This is provided with interrupting points 14 where contacts 16 abut at rest and thus connect a third connection point 9 to a fourth connection point 10 (see Fig. 1). In practice, there may be more breakpoints 14 than shown in the figure: for the sake of clarity, the figure shows only two breakpoints 14, one of which has been worked out. The contacts 16 are multiple; there is a contact for the connection of each core of a group of cores concerning a (subscriber) connection. For the sake of clarity, the contacts 16 are only shown once. Insertion of a separator into an interrupting point 14 results in the contacts 20 and 21 being separated, so that the connection between the third terminal 9 and the fourth terminal 10 is interrupted.

U1 0 1 023 7 8

In FIG. 3, a connection diagram for additional equipment 22 is shown. Groups of cores 4 of external cables 5 are connected via the first rack 2 and the second rack 8 of the main distributor 1 to groups of cores 11 of internal connecting cables 12. The additional 5 equipment 22 is at the location of the second rack 8 via a separator 15 connected groups of wires 17 included in the connection. For this purpose, the additional equipment 22 has connection points 23 for -a first-a first group of cores 18 which is connected via the separator 15 to a group of cores 4 of an external cable 5 and for -a second-a second group of cores 19 which via the separator 15 is interconnected with a group of cores 11 of an internal cable 12. In this way, the capacity of the main distributor is increased without physical extension of the main distributor. In practice, physical expansion of the main distributor is often no longer possible due to physical boundaries of the main distributor room. The additional equipment 22 is now connected without the use of additional terminals of the main distributor. It is advantageous to permanently include additional equipment 22 in series in the connection in this connection, because placing additional equipment with the (switching) equipment is impossible or expensive: by bundling the groups of cores 11 in an internal connecting cable 12, the veins are physically inaccessible, and expanding the plant is a costly alternative. All this can be easily realized in a short time. The extra cross wires 7 can be added to the existing wire bed without any objection and thus be conveyed to a wall or other rack by means of a pinafore. In practice, there is actually in all cases sufficient space in the main distribution room to place additional equipment of your own.

In FIG. 4, a further connection diagram for additional equipment 22 is shown. The additional equipment 22 is connected as in FIG. 2. The terminals 23 of the additional equipment 22 now also comprise terminals for a group of cores 24 of an internal connection cable 25 of additional equipment. Thus, the external cable 5 is now also connected to the internal connecting cable 25. In this way, the capacity of the main distributor is further increased without physical extension of the main distributor. After all, the wires of the additional equipment 22 are permanently connected directly to the internal 101023 7 9 connection cable 25 of additional equipment, without using additional terminals of the main distributor. E.g. in the case of the aforementioned application of ADSL, the internal wires for the telephone connection of the additional equipment 22 are connected via the original connection of the main distributor to the internal connection cable 12 of the switchgear, while the wires for the ADSL connection of the additional equipment 22 is led directly to the internal ADSL equipment via the internal connection cable 25.

FIG. 5 schematically shows an embodiment of a separating member 15. Electrically conducting members 28 and 29 are incorporated in the body 26. The groups of cores 17 of the additional equipment 22 are connected to the attachment points 30, such that the first group of cores 18 is connected to the first electrically conductive set of members 28 and the second group of cores 19 to the second electrically conductive set of members 29. The conductive members 28 and 29 are multiple; there is a conductive member for the interconnection of each vein of a group of veins 18 and 19. For clarity, the conductive members 28 and 29 are shown only 20 times. Likewise, the attachment points 30 are each multiple and are shown only once in the figure.

When the separator 15 is now inserted into an interrupting point 14 of the one shown in FIG. 2, the separating strip 13 shown, the contacts 20 and 21 are separated and the electrically conductive members 28 and 29 make contact with the corresponding contacts 20 and 21, or the group of wires 18 is connected to the third terminal 9 and the group of address 19 is connected to the fourth terminal 10, so that additional equipment 22 can be connected between the third and fourth terminals 9 and 10. With a separating member such as the separating member 15 shown in this figure, it is thus possible to connect the connection diagrams of FIG. 3 and FIG. 4 to realize. The separating member 15 is preferably further provided with a marking mark so that it can easily be inserted in the correct position into an interrupting point 14 in a separating strip 13. It is also conceivable to adjust the shape of the interrupting point 14 and the separating member 15 in this way. that insertion of the separating member 15 into the interrupting point can only take place in the correct position. It is also conceivable to design separators combined in blocks of separators 01010237; a disconnecting device that is not used to connect additional equipment is provided with a connection.

Fig. 6 shows an embodiment of a forfeit 31 or IDC 5 (Insulation Displacement Contact), with which the attachment points 30 of a separator 15 as shown in FIG. 5, can be equipped for connecting the additional equipment 22. When using a gif, soldering is avoided; the fork, a type of (copper) knife, cuts through the insulation of the (copper) connecting wire and forms a cold weld. The attachment points 30 are located on body 26 of the separating member 15. The use of gaffes 31 leads to simple mounting: each vein of a group of veins 17 is simply clamped in a gaff 31.

It will be clear to those skilled in the art that the invention is not limited to the embodiments shown and that many modifications and additions are possible without departing from the scope of the invention.

1010237

Claims (11)

Method for extending a main distributor in a telecommunication exchange, wherein the main distributor (1) has a first rack (2) with first connection points (3) for connecting groups 5 cores (4) of external cables (5) and second connection points (6) for connecting so-called cross wires (7), and a second rack (8) with third connection points (9) for connecting the cross wires (7) and fourth connection points (10) for connecting groups of wires (11) of internal connection cables (12) of switchgear, and 10 wherein second connection points (6) connected to the first connection points (3) on the first rack (2) are optionally connected by means of cross wires (7) to the fourth connection points ( 10) connected third terminals (9) on the second rack (8), the main divider equipped with 15 divider strips (13) between the third (9) and fourth (10) terminals on the second rack (8), with the divider strips (13) are marked with o Interruption points (14), which are adapted to receive separating members (15) in such a way that in the quiescent adjacent contacts (16), which each connect a third (9) and a fourth (10) connection point, are separated, which method separating strip includes insertion of a separating member, characterized in that the separating members (15) are arranged for connecting two groups of cores (17) to the contacts (16), such that a first group of cores (18) is connected to the contacts (20) connected to the third terminal (9) and a second group of wires (19) is connected to the contacts (21) connected to the fourth terminal (10), and that the method of connecting additional equipment (22) to the groups of veins (17) of the separator (15). Method as in claim 1, characterized in that the additional equipment (22) is provided with connection points (23) for the first group of wires (18) of the separating member (15) and for the other group (2). cores (19) of the separator (15) and / or groups of cores (24) of internal connection cables (25) of additional equipment, in order to increase the number of terminals of the second rack (8) for connecting groups of cores of internal connection cables (12 ) of equipment. Method as in claim 1 or 2, characterized in that the »101022-1 additional equipment (22) has two connection points for groups of cores, viz. The groups of cores (17) of the separator (15). Method as in claim 1 or 2, characterized in that the additional equipment (22) has three connection points for groups of wires 5, namely the groups of wires (17) of the separating member (15) and a group of wires (24) of an internal connection cable (25) for additional equipment. Method as in any of the preceding claims, characterized in that a group of cores (4) consists of the cores for the purpose of connecting a single telephone subscriber. Main distributor (1) for a telecommunication exchange, extended according to the method of one or more of the preceding claims. Telecommunication exchange, provided with a main distributor according to claim 6. Separating member (15) for use in a method as in any one of claims 1 to 5, comprising a body (26) of electrically insulating material and containing at least one electrically conductive member (28; 29), characterized that a first electrically conductive set of members (28) incorporated therein is connected to the first group of cores (18) and a second electrically conductive set of members (29) incorporated therein to the second group of cores (19) for connecting the additional equipment (22) is connected. Separating member (15) as in claim 8, characterized in that the electrically conductive members (26) have a mounting point (30) for connecting the additional equipment (22). Separating member (15) as in claim 9, characterized in that the attachment point (30) of the electrically conductive members (26) is provided with gaff pins (31) for connecting the additional equipment (22). Separating member (15) as in claim 8, 9 or 10, characterized in that it is provided with a marker for indicating an insertion position. 1010237