DE1001717B - Circuit arrangement for the operation of decadic coordinate switches as a call seeker for telecommunication, in particular telephone systems - Google Patents

Description

GERMAN

Coordinate switches with decadic grouping of the contact spring sets are known. Such coordinate switches have tens magnets corresponding to the number of groups of ten, one of which is available the contact spring sets of a group of ten is actuated. They also have such coordinate switches ten one-magnets, each of which when activated in the prepared group of ten the Set of springs of the same order number actuated.

It is already known to operate coordinate switches in telecommunications systems so that only Common decade relays and single relays are assigned to the subscriber lines and a breaker successively searches the individual decade relays step by step and then via a single relay switches the subscriber line of the calling subscriber through to the call finder.

The invention aims to use such a crossbar in telecommunication systems as a call seeker without to operate the waste of time of gradual searching. A particularly simple circuit arrangement The invention achieves that the subscriber connections are combined decadically by means of decade relays and that the actuation of the ten-magnet corresponding to the calling subscriber and the corresponding one-magnet of a serial call finder directly on the part of a decade relay and a subscriber relay takes place via the contacts of a switch-on relay assigned to the caller, which switches through all magnetic circuits in preparation for the subscriber circuit. In the arrangement According to the invention, all search times for finding the calling line are avoided. The fact that all magnetic circuits are switched through to the subscriber circuit in preparation via a multi-contact relay can be directly from the subscriber relay of the calling subscriber and from of the decade relay of its group, the ten-magnet and the one-magnet of the by the excitation of the switch relay Provided call seeker are excited, so that the switch-through contacts of the line of the calling subscriber in the crossbar switch.

An embodiment ^{1 of} the invention is shown in the drawing. This shows the main circuit diagram of a call searcher stage.

A common starting circuit is provided for all call seekers AS of a group of one hundred participants. This contains a connection relay AN 1 with twenty working contacts for each caller. All connection relays AN are in a chain circuit, so that only the connection relay of a free connection path is prepared. This switches the circuits of the zwan circuit arrangement for operation with its contacts

decadic coordinate switch

as a call seeker in telecommunications,

in particular telephone systems

Applicant:

Telephony and signal construction,
Lehner & Co. KG, Essen-Kupferdreh

Max Ainann, Stuttgart-Bad Cannstatt,
has been named as the inventor

umpteen magnets of the call finder to the subscriber circuit by.

When picking up the receiver at the subscriber station, e.g. B. No. 11, the relay i? Ll responds:

1.—, All, illI, α-line, subscriber station,

Relay D 1 assigned to the group is switched on at contact rill:

2.—, Dl, rllI ... rl0I, dl II, dl01 ... d2I, dll, +.

The relay D 1 is connected to the following holding circuit via the sequential changeover contact d 11:

3.—, Dl, rllI ... rl0I, dl, ■ + ·.

On the rest side of contact dll and at rest contact if 1II, the plus line for the other D 2 -... D 10 relays is interrupted, SO 'so that a relay D can always respond to me.

The starting relay AnI is switched on via the contact d 1 VI, which causes the connection of the tens and one magnets of the call seeker AS1, which is free in the present case. The circuit for the relay AnI is as follows:

4.— AnI, dlll, dl, dl VI ... dlOVI, +.

Now the tens magnet Z1 comes into play:

4a.—, Zl, α »II, dl III, +.

Relay Dh is switched on at contact dl V:

609 768/96

Claims (2)

5.—, Dh, JlV5 · +. Since relay Dh reacts a little later1 than relay D, the one magnet £ 1 is only switched on via contact r 11III after the ten magnet has been actuated. The magnet E1 is operated in the following circuit: 6.—, El, anlXl, r 11III, rl2III ... rlOIII, <f UV, dhl, +. Tens and ones magnets are placed via their own contacts in a holding circuit that is dependent on relays A and C. When the one-magnet E1 responds, the speech cores a / b and the associated cores c and d are switched through. In the connected c-wire, the relay A of the call seeker selection stage AS and the relay T11 of the subscriber 11 respond. 7.—, TU, c wire of the switch, el, el V. AIII, +. ao The relay Γ11 switches off the relay R11 at its contacts illI and illII. The subscriber loop is switched through to the pulse and feed relay A via the speech wires a / b: 8.— ·, Al, pl, α-wire subscriber line, subscriber station, & -wire subscriber line, pll. All, +. The circuit for relay C is closed via contact al: 9.—, C, el, +. The relay C switches the starting chain through to the next call seeker AS via contact c II. When relay T responds, relays R, D, Dh come to waste one after the other. In a manner not shown, a Cl relay is switched on via a c / V contact. This completes the setting of the call finder. Contact c I places the relay Γ11 in a holding circuit: 11.—, TIl, c wire of the switch, el, +. f CLAIMS: 1. Circuit arrangement for the operation of decadic coordinate switches as call seekers in telecommunication systems, in particular telephone systems without decade seekers, characterized in that the subscriber connections (Tj decadic by means of decade relays (D) are combined and that the actuation of the ten-magnet corresponding to the calling subscriber (Zl to ZlO) and the corresponding single magnet (£ 1 to £ 10) of a line caller (AS) directly on the part of a decade relay (D) and a subscriber relay (R) via the contacts (on 1 1 to 1 XX) 'of a switch relay assigned to the caller (AS) (AN) takes place, which switches through all magnetic circuits in preparation for the subscriber circuit (Tw). 2. Circuit arrangement according to claim 1, characterized in that each ten-magnet (Z 1 to Z10) and a one-magnet (E 1 to E 10) of the crossbar switch that has been triggered by the feed relay (A) and the occupancy relay (Q dependent holding circuit closes. Considered publications:
German patent specification No. 878 675. 1 sheet of drawings © 609 768 / M 1.57