DE1032333B - Circuit arrangement for telecommunications systems, in particular telephone systems with direction switches - Google Patents

Description

In telephone systems with dialer operation, in particular in long-distance dialing, different options are available for selection Cable bundle so-called direction selector used, which as a marker selector without zero position work. In a known arrangement of this type, from a storage device, which had recorded the number of the desired subscriber, a certain point at the exit of the direction selector whose subsequent outputs correspond to a trunk group, which leads in the direction that the calling subscriber had indicated by his choice. After this The last exit of such a bundle of lines is followed by a so-called spin step, which the direction selector reaches when all exits of a bundle are occupied. In such systems, two outputs of the direction selector can therefore be used for each trunk group not connected with outgoing lines, as an output as a so-called marking point to select a certain line bundle and an exit as a so-called spin step are required to display the trunk group.

The loss of two outputs per bundle, however, is a major disadvantage. Around this disadvantage In order to avoid this, one went over to using the twisting step of a bundle of cables as a marking step at the same time of the following trunk group. This saved one exit, which could now be wired with a line. With this arrangement only comes in Output lost per bundle.

The invention shows an arrangement in which any loss of voter output per bundle is avoided and all outputs of the selector can be wired with cables. This is because of this achieved that in each case the first line of a line bundle as a marking step and in each case the last line of a line bundle is used as a spin step by switching means upon reaching of the direction selector on a marked step come into effect before the next step or switching off the direction selector a check of the steps connected to these steps Ensure lines.

The invention will now be explained in more detail using the exemplary embodiment shown in the figure.

After a free direction selector has been allocated in a known manner, not shown, an allocation pulse is given from the memory via the α-wire to allocate the setting element ES, which is allocated to all directional selectors. If the setting element is free, the following circuit is established:

+, v. the α-wire, eil, xl, VIII, elII, H, -.

Circuit arrangement

for telecommunications systems, in particular

Telephone systems with directional dialers

Applicant:

Standard Elektrik Aktiengesellschaft,
Stuttgart-Zuffenhausen,

Hellmuth-Hirth-Str. 42

Walter Habig, Stuttgart-Zuffenhausen,
has been named as the inventor

The occupancy relay C1 of the setting element ES is energized via contact h I and is held quickly via its own contact after contact c 1II switches off the circuit of relay H.

+, phi, ell, Cl, VI, X (I), cIII, fe-vein to memory,. .., -.

In this circuit, relay X responds at the same time, which is held in the following circuit:
+, elIV, K (II), V, X (II), jpII, Wi, -.

Above

the relay K is switched on, which with its contacts kl, kll, kill via the points I, II, III and the contacts # 111, ^ IV, xV prepares the drive system of the selector. When relay X responded, relay B was switched on from the memory with contact χ I. The contacts b I to & VI couple the marker relays I to VI to the central marker multiple, to which the evaluated information about the connection to be established is simultaneously applied from the memory in a manner not shown. This information is provided in a

+5 Q code, ie two of these relays always come into effect, the combination of which corresponds to a certain direction. When two of these marker relays respond, relay D is energized. Should z. B. the direction 1 are occupied, so are the

Relays I and II have been energized from the memory. A positive potential is applied to the first line output in the first direction via contacts III and 2VI. With contact d III the holding circuit of relay B is interrupted and thus the mar-

809 557-25

kierrelais separated from the central marking multiple. The excited marker relays I and II hold themselves through their own contacts II and 21. The direction selector RW is started through contact ei V. If this selector reaches the marked line, the following test circuit is established:

+, Pl, M (I), 5VIII, 4IV, 3VII, 2VI, 6VII, III, d-Αττα des RW, χ VIII, cIV, WiI, -.

Relays P1 and M are energized in this circuit. The voter is stopped with contact pll. Above

+, dIL ml, M (II), H (II), -

the relay H is switched on and held via the contact ^X 5 clock h II. After the relay P1 has dropped out, the relay M is held via its winding III via the same contact h II. Relay C in the direction selector is energized via contact ph II and the speech wires are switched through to contacts eil and cIII.

The relay P and, in parallel, the relay PH are connected to the first line

c-arm, χVl, IX-IX, Pl, (Pll, GIl) I (PHl, pi), G12, mil, ώ VI ,. Mil, + '

at. The first line also serves as a marking line; if it is free, the test relay P and the relay PH respond in a known manner.

If, on the other hand, the first line was not free, the direction selector is switched on. When relay M responded, the holding circuit for the marker relays was interrupted with contact will. Opening contacts III and 2VI interrupted the circuit for relay P1. If the test relay P had not responded up to this time, the selector is switched on by dropping the contact pll . If the voter does not find a free exit, the relay P1 is activated again in the last step of the trunk group 1.

+, Pl, hV, Drehader 1, d-Αττη des RW, χ VIII, c TV, WiI, -.

The voter is stopped on this step by the contact / iII. Contact p \ III interrupts the holding circuit of relay M (III), which drops out with a delay. For the duration of the drop-out delay of this relay M , the test relay P is connected to the last line, ie the last line can be checked for its state (free or occupied). If this line is free, the relay P and PH respond, as already described, and the speech wires are switched through. If, on the other hand, this line is also busy, the following circuit is established after the relay M drops out:

+, MII, dVl, mil, phVlll, pill, G (I), G (II), -.

The relay G comes into effect in this circuit and gives in a known manner by means of his

Contact g I via the α-wire the spin momentum to the memory.

Claims (6)

Patent claims: 1. Circuit arrangement for telecommunication systems, in particular telephone systems with directional selectors, at the outputs of which line bundles leading in different directions are connected, the setting of which is carried out by marking on identification points on the part of a memory device evaluating the choice, characterized in that in each case the first line of a line bundle as a marking step and the last line of a bundle of lines is used as a spin step by switching means (Pl, M, H) on a marked step (marking, spin step) that come into effect when the direction selector is reached Ensure the lines connected to these steps. 2. Circuit arrangement according to claim 1, characterized in that after identification of a bundle of lines on the first line output of the direction selector is started and when this position is reached switching means (Pl, M, H) come into effect, which on the one hand cause the selector to stop in this position and on the other hand, connect test switching means (P, PH) to this line. 3. Circuit arrangement according to claim 1 and 2, characterized in that these switching means (Pl, H, M) cause such a test time limit that after the possible response time of the test switch means (P, PH) depending on the response of this test switch means of the direction selector to the further Searching free lines is released. 4. Circuit arrangement according to claim 1 to 3, characterized in that the marking of the Identification points and the testing of the lines via two different selector arms can be carried out. 5. Circuit arrangement according to claim 1 to 4, characterized in that when the lines of a bundle of voters are busy on the last line of the bundle, which is also identified as a spin step, by switching means (Pl) coming into effect via the jointly summarized spin wires, which simultaneously Brings switching means (M) into effect, which limits the test switching means (P, PH) connected to this line in their test time. 6. Circuit arrangement according to claim 1 to 5, characterized in that after finding the The busy status of the last line is the one that issues the busy response for the trunk group Switching means (G) is switched on. 1 sheet of drawings © 809 557/125 6.58