DE1762179C - Circuit arrangement for centrally controlled telecommunications, in particular telephone exchanges, in which, for special purposes, e.g. to set up specific test connections, the free dialing is replaced by the forced dialing - Google Patents

Description

In telecommunications, in particular telephone switching systems, there is only one coupler for each coupler Markers at the same time access. There may be more markers in reserve or have to wait for the has finished his work,

In such switching systems, however, the problem sometimes occurs with multiple lines at the same time depending on each other and must mark in such a way that a connection in the desired via the selected routes Form, i.e. also in the outgoing and incoming direction, is built up. Such a multiple over A connection running over two coupling stages is required, for example, for test purposes.

The invention relates to such a circuit arrangement for centrally controlled telecommunications, in particular telephone exchanges, in which the free connection paths are selected freely through the switching network during normal connection setup and in which for special purposes, e.g. B. to set up specific test connections, the free is replaced by the forced choice over a single previously determined path.

Circuit arrangements are already known, for example from the German patent publications 1135 059, 1151029 and 1134725, which allow individual connection paths through a switching matrix for the establishment of a predetermined connection in forced To mark the choice accordingly and to make all other paths inaccessible. This However, the option is only available for one of several connection paths.

There is also already known a circuit arrangement, e.g. B. according to the German interpretation 1 202 841, which uses a first section of a relay set for incoming connections to a subscriber line circuit and a second path section from this to another relay set. The connection through the common for both sections Switching field is first for the one direction in free choice and only afterwards after one Switching indicator the occupancy status on the subscriber line circuit briefly for the duration the search of the second way has canceled, for the other direction regardless of it in forced Choice selected and built. This has the disadvantage that the first part of the route is just as freely selected becomes, like a route, independent for each incoming normal connection and as a result of the second connection path to be tested through the switching matrix, the measurement of the overall connection influenced.

The object of the invention is to provide a circuit arrangement which allows a number of select as many routes of connection lines simultaneously and depending on one another, as for a special connection, e.g. B. test connection are required. Every connecting line is here to be clearly marked so that the connection only runs over the predetermined route.

This is achieved according to the invention in that for the simultaneous selection of several (two) different connection paths between two switching stages for each of the (two) connection paths its own setting chain is available, one of which is the first, the other the second connection

away etc., selects that contacts of one setting chain the response of the relay belonging to the next connection path of the other setting chain, etc., and prevent that of the first. Line markings found in the following setting chains are saved until the first connection path is established, whereupon the second, then the third etc. connection path is marked.

The circuit arrangement according to the invention has the advantage that the simultaneous selection of all for a connection, for example for a test connection, required paths whose position in the switching network is dependent on one another. For example a line for a connection is never wrong. wisely marked twice, even if the connection has not yet been built up via the first path and it should therefore appear free. It doesn't matter The order in which the routes between two coupling levels are occupied.

For the even selection of the connection paths from the multitude of available ones Lines ensure the separate adjustment chains for each required connection path. So if for example the first setting chain is only responsible for the incoming occupancy direction, a second takes care of it Setting chain for the outgoing direction, etc. In this way, each line is alternately both used for both incoming and outgoing connections.

Compared to a selection of the individual connection paths one after the other, according to the invention also the advantage that only a single selection time is required for the selection of several routes is.

So that the individual connection paths for establishing the connection are provided in the sequence how they are needed, only a single line is initially marked. As soon as if this is occupied, it is the turn of the second and so on. Meanwhile, all the markings are the though Already selected but not yet required connection routes are saved in a marking chain in preparation, however, they are issued one after the other.

According to a further embodiment of the invention, each of the adjustment chains is its own storage chain assigned, in which all marked during a setting chain cycle for the duration of this cycle (occupied) connecting lines are listed.

This has the advantage that each connection line is only used once during a cycle and in this way connections can be established alternately over all lines.

Each of the adjustment chains is - corresponding to one Further development of the invention - to reach all possible connecting lines several times run through.

This has the advantage that each adjustment chain does not have to have as many links as connecting lines are present, but only a fraction of them. So there are savings on switching means.

If no connections are to be able to be established via certain connecting lines, then according to In a further embodiment of the invention, the associated adjustment chain links are locked.

In this way it is possible to

binaungsleltungen.gczl.lt to drive without ^ ate

in which the sequence determined by the setting chain must be adhered to. Fail ₈ only a few connection lines for a possible Fehlerelngrenzung eligible, they can alternately be studied so long until you find the error. . An example of the invention is described in more detail with reference to the drawing. All the details that are not necessary for an understanding of the invention are omitted. It shows

Fig. 1 shows the course of three connection paths between two switching matrices and the facilities required to select the connection paths,

Flg. .2 a setting chain for selecting a first connection path in the incoming direction and an associated memory chain,

3 shows an associated relay chain for reversing from one cycle to the next,

4 shows an adjustment chain for the connection establishment £ outgoing direction and an associated one Memory chain,

5 shows an associated relay chain for reversing from one cycle to the next,

I 762 by ·

ungen Zl are

if ^ Ä «» »nt from the: ^l _u , J ¹ - second, third and a / Sahl is hit. _dvler groups of intermediate A. " _{wi shown} in ρ 1T2, iode

g ^^ Lel5! gS, so «summarize the setting chain K Oropgau 1 aejl·Lgmnj ^ _to ^ _{un (J die}

JJJJJ, sJlicherkette M eight memory elements M 1 to hörigj Spgohw mmn ^ _{n consequently}

^ dSaufen until all intermediate lines erη

μι η

re »gjt ™ ^ of _the chains K and · Λί of one

»5 The ^ mjteuerunj ^ associated from

«J« »aui am aen ^« u » _b ° _standing relay chain

four relays each Wi ms tr * oeewiiw

¹ yiurhenleitune is assigned to a key Sp-Z ^ henleitung is ene ja, »

three such keys drawn, namely the ^ rei "iicner ***"^"6 Keys

If the test facility is occupied, a

elected heads of association.

According to FIG. 1, the connection _U n _g paths ^{8 to be selected run} between the coupling stages A and B, which are connected to one another with a number of intermediate connecting lines ZL Ibis ZL 32.

In a normal connection establishment, a path searcher selects WS-AB in a free choice of the intermediate lines and marks a Anschalter on-off the appropriate line via which the connection is to be established. According to the conditions mentioned at the beginning, however, a connection is to be set up for special purposes, namely to set up a specific test connection. In addition, a test device P is also present, from which a selection of the connection lines provided for the test is made, as well as an intermediate cable manufacturer ZE-AB, which determines those of the intermediate lines in question which the test connection is to run and which, speaking, switches off the switching means no free choice in the exchange, but designates the intermediate line that has been selected. The name of the selected line is passed on to the test facility P at the same time.

^ i ⁸ ! · ^ T »,» t!.% ei _n u IVl in a response and 4 * 2 the first relay Wl m ^ei " ^em ^ f ^ _d

de Sang to the coupler fl from which

L _n * Z Wr nirht eezeieten coupler C final coupler, not shown here,

it's correct. - "" "," "" "u won't become two

After a venous nausea, we have to go

darge ^s » ^eIlte _ ^R ^ _n ^a ' ^s Jri! _n ^u; ÜR the FÄaltung is the Begmmchai for the ^ stepping oer

Chains T. .. (F 1 g. 3 and U .. .Jb ^ g. V against. Let the chain T. ^ RadUet

Via J, e contacts 1 »1« YY ^{5 CS} P [^ ₉ ⁰⁸ ; RelaisJl an and scWiess S pSen. ^ B eSe der to Il <Mjμ g ^ j, to ρ in particular

«Ν ^ Μ four Zwij ^ J. It fei now assumed, ni lungif"'. | ^E iP "" _s - _{b ttiet} jf _t ß led.gl ch de Sper ta _S J ^ JSf ^^ _Ue

V ^be ^ L relay E , not shown, speaks to XäSf ^ . His contact 15 * 1 ^ πηΓαβη response circuit for the first separates aen Ansp adjustment chain,

Χ ^ _{ο m depart} de Verbinauf so that the first intermediate conduit for

starting from this via the intermediate line ZLS to a point of no further interest, and thirdly from there back again in the incoming direction via the intermediate line ZL 32 to a test participant PT.

It is now the task of the '^ ZE-AB to select the appropriate three intermediate numbers from the total number and to make them available in the correct order for the connection establishment. How this happens in detail

is based on FIG. 2 to 7 explained. For the sake of simplicity, only two twins are set. first one in incoming and 33; sr sssa

g ig.ftI Drmgi _{Kon {act} ^^ _χ .

SsiVritential for the intermediate line ZL 1 ^ f erspenpotentm, nir ^ _that ^

over 2 _e 3 _g ^S _be | _{egt who} can. This makes it _{the most} effective

dVngWwHhU and stored in the marking chain, aunt ^ ^, ^^ ^ "^ _that " _{about this intermediate} .

_{a test connection was} established 8 corresponding link of the storage _{chain M «switched:} ^H _{via the} contact 18U (Fig. 2) so-B _{the contacts 1 and 19 / from not ge} .

_{rfas Re} j _{aisM1 is excited} . It holds

continues via its contact 21 ml until, after one cycle of this setting chain K, the relay SHl drops out and its contact 17s / il opens. Another contact of the relay Ml, namely the contact 22ml, opens the response circuit of the relay Kl and switches the contact chain through to the other relays of the setting chain K , so that another intermediate line can be occupied in a subsequent connection.

It is now assumed that the lock button Sp S has been actuated and thus the intermediate line ZL 2 is excluded from being occupied. (F i g. 2) via the contact 10il arrives at the energization of the relay to the relay Tl ground potential M 2, so that this is responsive. Since its contact 23 m 2 is closed, ¹ S it holds on and switches through the contact chain to the next link of the adjustment chain / C with its contact 24 in FIG. In the setting chain G for outgoing connections (FIG. 4), however, the contact chain is not interrupted, as with contact 15 k 1, so that the intermediate line ZL 2 can be used for outgoing connections.

Since the relays E and TA 1 only step G 8 is free for each path disengagement. In this case, the contact 36 λ-8 is used to bring the relay G 7 in place of the relay G 8, regardless of whether it has already been actuated and is therefore blocked by the contact 37 «7. Nevertheless, it is ensured that no indicator for switching to the second run of the setting chain G is given before G 8 was occupied in the last step.

The revolutions in the second setting chain G are controlled in a similar way to the first setting chain K. As already mentioned, the relay TA2 is also closed at the same time as the relay TA 1 when the test device is switched on. 8 characterized ία2 a relay Ul could addressed via the contact and prior to the assignment of the first free chain relay G by means of the contacts 66 u 1 check to 68 "1, if one of the lines is blocked for the outgoing traffic.

As soon as a relay is excited in the second adjustment chain G, its associated contact 55gl to 56g8 in FIG. 6 is closed. This brings the associated relay Zl to Z 8 and at the same time the energized relay GN as a sign that now

are energized again, the relays in

the setting chain K is operated until the last ^a5, the second setting chain G is set, switched off. Link K 8 is reached. Then the contact has as soon as the first cycle of the first adjustment chain K

is finished, the relay SHl , not shown, is again energized, which closes its contact 38j / j1 (Fig. 3) and brings a relay KX to respond via the contacts Ic and 40wl. By actuating its contact 42 kx , after the contact 38 shl has come to its rest position, the relay W2 is activated via the contacts Ic and 43μΊ.

._ _ _ .. _e .. _r ._ _o - excited. With a corresponding contact (Fig. 7)

■ 'of the contact 14 k 1 when the setting ^{chain 35 of} this relay is working, another intermediate line for incoming connections has been energized, the coupling stage B from the coupling stage C

31m8, the contact chain turned so far that 13 e and 12ial a circuit for the relay KEl is turned on in the rest position of the contacts, indicating the end of a chain round.

As already mentioned, the relay F, not shown, has been energized at the beginning of the selection process. Two relays KN and GN have also responded via its contact 28 / (FIG. 6). With actuation

circuit for the relay KN interrupted, so that this relay has dropped out. Its contact 29 kn (FIG. 4) was closed, so that the first free step of the second setting chain G could be occupied via contact 30e (FIG. 4), for example relay G2. The relay Gl could not be energized because the contact 15kl, as described, has interrupted the response circuit.

The second adjustment chain G has, just like that. first Eincllkettc Λ ', also its own storage chain / V, whose relays Nl to N8 reached for each previously occupied chain link Gl to G8 and beyond. By pressing contact 4 w2 , the relays Wl and Γ1 are switched off. For this, when the contact 6 ία 1 closes, the relay Γ 2 responds, whereupon a new presetting of the blocked storage chain relay M and a new run of the first setting chain K take place, as already described. The third \ md the fourth pass of the first setting chain K is carried out in a similar manner. The selection of the intermediate lines in the incoming direction is then started again, beginning with intermediate line ZLl, until the testing device is thrown off;

which is also excited with every blocked line. _s "Occupancy relay" is shut down.

This relay N also actuate a contact in the relay circuit according to FIG. 5 works similarly to

the one just described, only with the difference that the earth potential for actuating the relays (/ 1

a contact chain until all contacts 83h 1 ... 37 / t7 to 94/18 of this memory chain are closed and the relay KEl responds when the contacts 3 ') e and 78 ta 2 are in the rest position after one full run of the second F.instellketlc G. The difference between the two points K and G is that there is also a corresponding contact parallel to each memory contact 83/11 ... 37 / i 7, 94/18

until VA from the executions to find the way is created by the mediation, depending on this

which group of subscriber connection circuitct

should be achieved.
In FIG. 6, between the contacts S5j? T bi

56f? 8 and a contact 47 ίνα to the earth potential

15Al ... 93A 7. 36A 8 is arranged, which ordered the chain 6o, and between the contacts 14Al bi link i / l ... Gl, G8 does not respond when SAk 8 Hrdpotcntinl a contact 48 wb. This bcidci at the same time that the same intermediate line contacts belong to relays W not shown / link belonging to the chain K is marked. and Wti, from the central executions de

In addition, in this exemplary embodiment, switching is controlled, and / was because the linslell chain G for outgoing connections in the 63 relay WA is switched on if the selected twin / len shrill has a special feature. As a result, the line for the incoming connection can be marked so that the first instcll chain K should already be the and the relay WH IiIr outgoing Va SiInill A 8, as in the other line of communication. Kobalil for example ilor Konliikl 47 m

TßO

f VS £ d *

is actuated, the relay Z ..., which was actuated via a contact g ..., drops out temporarily.

Via a contact 15 wh (FIG. 7), any other markings are blocked for all those intermediate lines whose relays Z are at rest. So there are seven of the eight connected intermediate lines blocked, and only one remains free as the only way to set the route.

The same blocking takes place if the relay WB is subsequently excited and the relay WA is in the rest position.

This happens again in such a way that the contact 15 wh (FIG. 7) applies blocking potential (-) to all marking points that do not belong to the one actuated relay Z. This one marking point is and remains free of blocking potential, so that the outgoing connection can only be set up via the intermediate line marked by this marking point.

Simultaneously with the marking of a come the ^ao the communication path is also a way by the switching stage C to the switching stage B thereby marked, that the contact is ίνα operated 49 in response of the relay WA and thereby defines blocking potential to all except for one line. ^a 5

All selection and setting processes described in this example of the invention cause an acknowledgment. As soon as an acknowledgment is missing, the entire stepping process is stopped and a fault signaling is switched on. At the same time, all the designations of the paths involved in the previous connection setup are noted in the memory chains and made visible on a lamp field, so that the error can now be easily localized. ^3S

Relay C is switched off to end the test. All of its contacts open and all relays are reset to their original position.

40

Claims (11)

Patent claims: 1. Circuit arrangement for centrally controlled telecommunications, especially Femsprechvermitt- 4ς _treatment systems, in which the free connection paths are selected freely through the switching network during normal connection setup and in which for special purposes, eg. B. to set up targeted test connections, the free _{So is} replaced by the forced choice over a single previously determined path, characterized in that for the simultaneous selection of several (two) different connection paths (ZLi, ZLB) between two Kop- _3S pclstufcn (A , B) there is a separate setting chain (K, G ) for each of the (two) connection paths, of which the cine (K, Fig. 2) the first (ZLX), the other (G, Fig. 4) the second connection path (ZL 8) etc. selects that contacts (15Al, Fig. 4) of one setting chain (K) trigger the response of the relay (Gl) belonging to the next (second) connection path (ZL 8) of the other setting (G) etc. prevent, and that the Leittmgsmurkicrungcn (ZL 8 etc.) found by the first F.instcllkcttc following Hinstcllkcttcn (K) are stored in a Mnrkicrkcltc (Z, V i μ. ft) until the first connection path (ZLl) is established, whereupon the second, then the third etc. connection path (ZL 8 etc. .) is highlighted. 2. Circuit arrangement according to claim 1, characterized in that each of the (two) setting chains (K, G) is assigned its own memory chain (M or N) in which all the connecting lines marked during a setting chain cycle are stored for the duration of this cycle will. 3. Circuit arrangement according to claim 1 or 2, characterized in that each of the setting chains (K, G ) is run through several times (four times) to reach all connection lines (32) in question, with a different group of connection lines (ZL) with each cycle is achieved. 4. Circuit arrangement according to claim 3, characterized in that the connecting lines which are not to be marked (3, 5, 30) are identified by locking the associated adjustment chain link (KUM 1, K2IM2, KWMS) . 5. Circuit arrangement according to claim 4, characterized in that each connecting line is separated according to the direction of construction Connection (incoming, outgoing) can be blocked. 6. Circuit arrangement according to claim 4, characterized in that the blocking of a setting chain link (z. B. K 1 / Ml) by applying potential (+) via a button (Sp 3) to the response circuit of this link is achieved. 7. Circuit arrangement according to claim 6, characterized in that the identification of the connection paths not to be marked (ZL 3, ZL S, ZL 30) acts separately on each revolution of the adjustment chain (KIM) (Tl to Ti). 8. Circuit arrangement according to claim 7, characterized in that each setting chain (K, G) is assigned a relay chain: (T, W in FIG. 3 or U, X in FIG. 5) which ended at each One cycle of the setting chain initiates the next cycle of this setting chain, removes the identification of the connection paths (ZLl, ZL 8, ZL 32) of the completed cycle that are not to be marked for the test connection and switches on the identification of the new cycle. 9. Circuit arrangement according to claim 8, characterized in that the sequence in which the setting chains (K, G) assigned to the relay chains (T, W or U, X) are operated, according to special aspects (belonging to a subscriber group) of the Facilities to search for the path of the mediation is influenced. 10. Circuit arrangement according to claim 1, characterized in that the markings from the marking chain (Z) are called up by switching on special Schaltmittcl (H ^/ i4, WB) in the order in which they are required to establish the connection, and that to all Markierpunktc that are not to be marked, blocking potential () is applied (15m · / ,, 49wa), while the Mnrkici point belonging to the selected line remains potentinlfrci. 11. Circuit arrangement unch claim K), 109 6? 7/314 characterized in that the others are already selected, but at this step of the connection setup Marking points not yet to be marked also for the duration of this step be applied with blocking potential. 1 sheet of drawings