DES0047371MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: February 6, 1956. Advertised on December 27, 1956

GERMAN PATENT OFFICE

In large telephone networks, the exit exchange is used to establish connections across multiple offices a target identifier that identifies the desired office is sent out. Depending on which Network level holds the desired office, d. H. whether it is a central office or a main office or a node office is, the caller usually has to select a one-, two- or three-digit code. The then transmitted via the busy connection line leading to a transit office Target identification can consist of one or more series of impulses or of a code symbol. When Code characters can be direct current characters or alternating current pulses of different frequencies or mixtures of frequencies be used.

The object of the invention is to provide an evaluation device that requires as little switching means as possible create, depending on a recorded target identifier, the setting of the structure of the Connection to the direction selector to be used, e.g. B. by switching on potential at one of the in Question coming contact group upstream marking contact, initiates.

The invention consists in that for each digit of identification numbers a group of identification cores and for a marker relay is present for each of the cable bundles corresponding to the codes, each marker relay only with the identification cores of the individual identification groups, which are not the identification numbers of the Corresponding codes of the line bundle to be used, connected via rectifier and that after connecting potential to the identification cores corresponding to a selected code number and closing of excitation circuits for all marker relays the marker relays of non-selected key figures, e.g. B. as a result Short circuit, cannot respond.

609 738/136

S 47371 VIII a / 21a ³

The invention avoids special relay groups, which correspond to the selected code are excited in a certain combination by potential connection at Kennadefn and over Contact pyramids switch on the marking relay in question. For key figures with one to three Accordingly, three groups of such evaluation relays are avoided. These evaluation relays are by the cheap and only a small space

ίο availing rectifier replaced.

The type of target identifier influencing an evaluation device is important for the invention irrelevant. It can be one or more series of impulses or codes. As a code symbol DC symbols or alternating current pulses of different frequencies or mixtures of frequencies can be used will.

In the exemplary embodiment described below, it is assumed that for each code number a key figure two specific of five frequencies are recorded in the evaluation device.

In the drawing is an embodiment of the.

Invention shown. The evaluation device is shown, insofar as it is necessary for an understanding of the invention a transit office.

The evaluation device with the receiver E is provided jointly for n- connecting lines. When a connection line is occupied, the evaluation device is connected to the connection line. The receiver E can record and evaluate up to fifteen frequencies. It is assumed that traffic directions can be controlled via the voters of the transit office, which are indicated by the first or the first and the second or

all digits of a three-digit code are determined. A switch arm rwd of a direction selector is shown which, after recording and evaluating the target identifier, adjusts itself to the group contact of that contact group, identified by the contact of a marker relay, via which the bundle of lines corresponding to the selected code can be reached.

As is known, the first digit of the code already indicates the direction to a central office, the first and second digits of the code indicate the direction to a specific main office of a central office area and three-digit codes for a specific node office in a main office area.

In the exemplary embodiment it is assumed that the direction selector of the passage

Office six different trunk groups can be reached. . ' ⁶ p

One line bundle leads to a central office ZAz. For connections to the main offices HA 51, HA Sz, HA 54 to HA So a common trunk group is provided, which leads to the central office ZA 5. In this central office, the connection is then forwarded to the main office determined by the selected code number. Another trunk group leads to a main office HA 53 of the central office area ZA 5. These connections do not run through the central office ZA 5. '

In the area of the central office ZA 7 lead three trunk groups, namely a Leitüngsbündel, which the main offices HA ητ, HA 73 to HA 70, a second trunk group, over which the node offices KA 722 to KA 720, and a third trunk group, over which the node office KA 721 is reached immediately. The connections to the main offices ΗΑητ, HA 73 to HA 70 run via the central office ZA 7. The connections to the node offices 722 to 720 are routed through the main office HA 72, while the node office KA 721 is reached directly via a trunk group.

For example, a total of six frequencies out of a possible fifteen different frequencies are sent from the exit office to the transit office go and recorded in the evaluation device (receiver) and decrypted (contact combinations).

The target identifier of six frequencies is made up of 3x2 frequencies, where 3 is the number the code number (code numbers) and 2 dieZahrder each five frequencies is selected frequencies.

The target identifier is therefore in encrypted form a three-digit code that is sent by the recipient is fully absorbed. The evaluation of the received target identifier is based on the Conditions of the special transit office. First of all, the frequencies that correspond to the entered frequencies are used Identification relay energized.

The five identification relays Z τ to Z5 are provided for the first digits of multi-digit identification numbers , the identification relays H τ to Hs for the second digits of identification numbers and the identification relays K τ to K 5 for the third places of identification numbers.

The table below shows which of the fifteen frequencies fτ to / Ί5 are used with the various digits of the individual digits of code numbers and which of the relays Z τ ■ to Zs, Hτ to Ü5 and Kτ to Ks respond:

Digit First place Currently Second position Third digit I. / Ί, / 2; Ζτ, Z3 f 6, f 7; Ητ, Hz / Ίΐ, fxz; Κτ, Kz 2 fi, fy, Ζτ, Z3 f 6, f 8; Ητ, Η3 / Ίΐ, / i ₃ ; Κτ, Κ ₃ 3 fz, f3; Zz, Z ₄ f 7, f 8; Hz, H ₃ fx2, / 13; KZ, K3 4th fz, / 4; Zz, Z ₄ f 7, f 9; Hz, H4 fi2, / 14; Kz, K ₄ 5 fz, fA; zz, zs f 8, f 9; H ₃ , H ₄ fxz, fir, K ₃ , K ₄ 6th fz, fs; ζ3, zs f 8, / Ίο; H ₃ , H ₅ / Ί ₃ , / Ί ₅ ; K ₃ , K ₅ 7th . fA, fs; za, Ζτ f 9, / Ίο; H ₄ , H ₅ / Ί ₄ , / I ₅ ; K ₄ , Ks 8th fA, Λ; ζ4, Ζτ f 9, f 6; Ji ₄ , Ητ / I ₄ , / ΐΐ; K ₄ , Κτ 9 fs, fn zs, Currently / Ίο, f 6; Hs, Ητ / ΐ5, / ιι; K 5, Κτ IO fs, fz; zs, / Ίο, f 7; Hs, Hz / 15, / µ; KS, Kz

.609 738/135

S 47371 VIIIa / 21a ^s

I. Connection to an office in the area

from the Central Office ZA 2

After the frequencies fx and fj have been picked up in the receiver E , the relays Zx and Z3 'are switched on. Contacts 121, 221, 321, 423, 523, 623 are closed. Of these, contacts 121 and 423 are in the left contact row and the other contacts are in the right contact row. Each ίο relay Z switched on by switching means in the receiver has only three contacts. Each of the relays H and K is equipped with the same number of contacts. Simultaneously with the activation of the relay Zi and Z 3 an unshown relay E is pressed, the ever closes the contact and potential of all Markierrelais Mi? 1 to MR 6 applies. When responding, each of these marker relays applies potential to the wire leading to a specific group contact of the direction selector.

By closing the two contacts 121 and 523, potential is applied to the identification wire mxJ2 . The marking relay MR 1 is not connected to the characteristic wire «1/2 via a rectifier. It speaks to:

i. +, Mi? I, 8, each, -.

By closing the contact gmrx , plus potential is applied to the contact of that Koritakt group of the direction selector to which the bundle of lines leading to the central office ZA 2 is connected. If the switching arm rwd of the direction selector to be used for the connection reaches the group contact identified by the contact gmrx, the direction selector is prompted in a known manner to look for a free line from this bundle.

The other marker relays Mi? 2 to Wed? 6 are short-circuited in the following ways:

, _ Gz, MR ₂
2. +, 12 !, 5.3. «I / a. Gi, G ₃ TMa ₃ '+ "

s, MR4)

■ 3. +, izi, 523, m 1/2, G4, (G6,

(Gy, Wed? 6)
II. Connection to main office HA 54

Of the six frequencies recorded in the receiver, / "3, f 4 and fy, fg are evaluated. The relays Z3, Z4 and H2, H4 and two of the five relays Kx to K 5 respond. Only the marker relay MR2 can respond because it is not connected to the identification wires »1/5 and« 2/4. By closing a contact rar 2, potential is applied to the relevant group contact of the direction selector. The other marker relays are short-circuited:

4. +, 423, 1024, mi / 5, G8, MRx, +.

5. +, 11A2, 12A4, «2/4, Gg, Gio, Mi? 3, +.

(G ₅ , MR 4)

6. +, 423, 1024, mi / 5, Gn, (G 6, Mi? 5), +.

(G 7, Wed? 6)

III. Connection to the KA72X node exchange
The frequencies / "4, fs; /" 6, / "8 and fxi, fx2 are recorded in the receiver. Relays Z4, Zs, Hx, H 3 and Kx, K2 speak to. Only the marker relay MR 6 responds to and applies potential to the contact of that contact group via which the bundle of cables to the node office KAj2i is reached. The other marker relays are short-circuited via:

7. +, 1524, 1625, mi / 7,

G12, Wed? ι

8. +, 17A1, 18Ä3, «2/2,

G14, Gio, MR 3

9. +, xgkx, 20Ä2, «3/1, G25, Wed? 5, +.

IV. Choice of one not through the transit office
reachable traffic direction

If, as a result of an error, frequencies are sent over the connecting line VL which are not assigned to a traffic direction that can be reached via the transit office, all marker relays are short-circuited. No marking relay can respond.

It is assumed that the frequencies f4, fx and / "6, fxo assigned to the code number 89 are recorded in the receiver E. The relays Zx, Z4 and Hx, Hs respond. 1/8 and at the same time via contacts 25 h 5 and 26 hx on the identification line «2/9.

The marker relays are short-circuited in the following ways:

(G 19, Wed? 1)

10. +, 1524, 221, «1/8, (G20, G2, Wed? 2) _t _ | _ _

Gs, Wed? 4

11. +, 1524, 221, wi / 8, G21, G6, Wed? 5 ₍

7 '

There are also further short-circuit paths .105, for example via the contacts 25A5, 26A1 and the wire m 2/9 for the relays MR 3, Mi-5 and MR 6.

Instead of a short circuit of the marker relays, cable bundles that cannot be used can also Counter-windings are used, which when potential is applied to the respective The identification wires are energized and prevent the marking relays from responding.

Claims (1)

PATENT CLAIM: Circuit arrangement for evaluating recorded target identifiers in telephone systems with several offices, characterized in that a group of identification cores («i / i to mxjxo, »2/1 to« 2/10, »3/1 to m ^ jxo) and a marker relay (Mi? I, MR 2 etc.) is available for each of the line bundles corresponding to the codes (2, 51 etc.), each Marking 609 738/136 S 47371 VIII al21 a ^% relay (e.g. MRi or Mi? 2) only with the identification wires (ζ. e.g. mi / ι, mi / 3 to mi / 10 or oti / i to w 1/4, w 1/6 to mi / ίο and »» 2/3) of the individual groups of characteristic wires that do not correspond to the code or numbers of the code numbers of the cable bundle to be used, is connected via rectifiers and that after connecting potential to a selected code number (e.g. 2 or 54) corresponding identification wires (wii / 2 or mi / 5, m 2/4) as well as closing of excitation circuits for all marker relays (MR 1 to MR6) the marker relays (MRz to MR6 or MR1, MR3 to MR6) of non-selected codes (e.g. due to a short circuit) cannot respond. 1 sheet of drawings