DE961177C - Circuit arrangement for telecommunication, in particular telephone systems with Gespraechszaehler - Google Patents

Description

ISSUED APRIL 4, 1957

S 4224OFIIIa / 21 a ^s

has been named as the inventor

with conversation counting

The invention relates to telecommunications, in particular telephone systems with call counting and Remote blocking of a line for outgoing remote connections.

In prior art arrangements, a first count surge occurs during a remote connection affected relay causes the remote locking. The calling line is here during the Time of connection establishment not blocked against occupancy by an incoming remote connection. If the calling line is replaced by a incoming remote connection is occupied, the occupied, high-quality connection lines are released, so they were unnecessarily withdrawn from traffic.

It is also known that the long-distance connection is immediately activated when the long-distance traffic number is dialed against occupancy to be blocked by an incoming remote connection. A relay performing remote locking at the same time causes a counter relay to switch over, which in the case of local connections only after termination the same is switched on, so that this Reilais during the remote connection through Counting current surges can be made to respond.

The invention is based on the object of the counter of a calling line both in local

connections by a power surge and, in the case of remote connections, by a charge corresponding to the charge Number of power surges to actuate and during the existence of these connections in addition, in the case of long-distance connections, the remote blocking must be carried out immediately after dialing the long-distance traffic number. This is achieved by the fact that an auxiliary relay that controls the counter circuit when Response closing counting relay to the counting wire

ίο switches on after setting up a local connection under switched off for the duration of the connection due to the influence of the counting relay receiving a counting current surge while it temporarily drops out after a remote connection has been initiated, the remote lockout causes and a further relay of the connection path influenced thereby the permanent Deactivation of the auxiliary relay prevented.

In the drawing, an exemplary embodiment of the invention is shown. Only those are shown

ao necessary for understanding the invention circuits and switching means.

R is the incentive reception relay of the call sacheTsASi, which, when responding, the drive device (not shown) of the call seeker, z. B. a motor turns on. The test relay P is connected to the test arm 2 at the contact ι r. If the test arm 2 reaches the test contact of the calling line to which the isolating relay T is connected through a contact of the calling relay (not shown), the test relay P responds:

1. +, IP, 3c, UP ₁ G, ir, 2 T, -.

The call searcher is shut down in the usual way. The contacts Ap and 6 p open. The contacts · 5 /> and γ ρ close. The calling line is blocked from being used by another call seeker or a line selector against incoming local calls. While the call searcher is being set, the contactless of a not shown, drop-out delayed relay is closed. The relay Ph responds:

2. +, 8 a, 9, 10 q, 7p, PH ₁ -.

The contacts 11 ph to 15 ph are closed. The relay ZH responds:

3. +, lArph, ZH, 16, C i, -.

Contacts 17 zh to 20 zh open, contact 21 zh closes. The counting relay Z is connected to the counting wire 29 via the contacts 27 w, 21 zh, the choke coil Or and the transformer winding 28. Via the contact 15 ph and the selector contact 22UF, which is closed, as soon as the call seeker leaves his idle position, the relay D that switches the starter chain responds with a delay. It switches off the relay R and the incoming starting wire on to the next call seeker. When the contacts 11 ph and 12 ph are closed, the feed circuit running through relay A is established for the calling subscriber. Contact 8 α opens. Contact 23 α closes. The short-circuit of relay C is canceled, this responds in series with relay PH and closes the following circuit by means of 24 c:

A- +, C ₁ 23 a, 24c, 7p, PH, -.

The contacts 25 c, 26 c are also closed, and contact 3 c is opened. Then that falls. Contact 10 q controlling relays.

The counting relay Z connected to the counting wire 29 cannot respond at the moment, since the negative potential only occurs when the participant reports in a Local connection at the line selector or at another subordinate point of the connection path is created. A local connection is established.

The first series of impulses consists of one to nine impulses. The transmission of the power surges to the first group selector is not shown. The one marked dk 10 remains in the first group selector IXiW. Decade contact in the position shown. This decade contact is only activated after ten power surges, which correspond to the long-distance traffic number ο, and then temporarily applies + to wire 16. When the first current surge is received and the contact 23 a is opened, the short circuit of the relay V is canceled. Relay, V responds:

5. +, 8a, V, 24.C, 7p, PH, -.

The relays V and C remain activated during the start of each series of current impulses. Contact 30 ν is closed.

After setting all dialers for the connection path, the selected subscriber is called. Reports If this is the case, it is applied to the wire connected to the speaking and counting wire 29. The relay Z responds:

6. +, --—, 27 w, 21 zh, Dr, 28, 29, - at a subordinate point of the connecting route.

At contact 31 s the circuit for the counter Zr of the calling line is closed. Relay ZH is short-circuited via contacts 32 d and 33 ζ and drops out. By opening the contact 21 zh , the relay Z is separated from the wire 29. The winding of the counter relay Z is short-circuited via contact 192/1, so that it drops out with a delay. Contacts 20zh, 17 zh and i8zh close. Closing the contact 178h is irrelevant for local connections. After the counter relay Z has dropped out and the contact 33 ζ has opened , the relay ZH cannot respond again because + is connected to t6 via $ p, 26c, 2ozh, the relay ZiT remains short-circuited.

In the case of local calls, the calling line has to press the counter once of the called subscriber secured.

The counting potential can also be applied to the counting wire 29 at a different point in time, not directly after the participant has reported, but after a waiting period has expired, to be switched on Not counting bad connections.

If the subscriber wants to establish a long-distance connection, he has to dial the long-distance traffic number ο as the first digit. The ten current impulses in this series set the first group selector before the tenth decade. The decade meeting dk io is temporarily closed. + Is applied to wire i6 for a time during which the relay ZH, which is short-circuited as a result and which is also connected to wire i6, safely drops out. Since at this point in time the relay V, which is addressed during) the recording of the series of currents, has not yet dropped out, ph + is directly connected to the contacts 2OV ₁ ijh and 13. P ruf arm 2 created. The calling line is remotely blocked.

At the same time the relay P is short-circuited.

7. +, dk 10, 16, 202hj 26c, IIP, G, i3ph, ijzh, $ ον, +.

Relay P drops out. The contacts /! and open Jp. The contacts 4 p and close 6p. The remote blocking is maintained via the contact ^ p after the contact 30 z> has opened, because + is connected directly to the test arm 2 via r 3 ph. By closing the contact 6 p sand the relays C and PH are switched on in a circuit running through the contacts 6p and 25 c.

After opening the contact dk 10, the relay ZiT responds again, because after opening the contact 5 p there is no short circuit for the winding of the relay ZH. The rectifier G further prevents one. Influence of the positive potential at contact 4p on relay ZH. The 2 / z contacts are moved into the working position. Opening the contact 18 zh enables the relay V to respond while the next series of current impulses are received. The counting relay Z is connected to the counting wire 29 via the contact 21 zh.

If, after the connection path has been established, the counting current surges come in via wire 29, the relay Z responds to each of these current surges and switches on the counter Zr . At the same time, the auxiliary relay ZH is short-circuited at contact 33 ζ. It falls off. By opening contact 21 zh , the counting relay is disconnected from wire 29 and short-circuited via contact igzh. After relay Z drops out and contact 33 ζ opens, the auxiliary relay ZH responds again. The counting relay Z is applied to wire 29 and carries out the described switching operations with each subsequent counting current impulse.

Claims (8)

PATENT CLAIMS: i. Circuit arrangement for telecommunications, in particular telephone systems with dialer operation and call counting, characterized in that an auxiliary relay (ZH), which connects a counter relay (Z), which closes the counter current circuit when responding, to the counting wire (29), after establishing a local connection under the influence of the one The counter relay (Z) that receives a counting surge is switched off for the duration of the connection, while it temporarily drops out after a remote connection (o-dial) has been initiated, causing the remote blocking and a further relay (P) of the connection path influenced by this, the permanent switching off of the auxiliary relay (ZH) prevented. 2. Circuit arrangement according to claim 1, characterized in that the responding in a local connection counting relay (Z) the auxiliary relay (ZH) short-circuits (33 z), which in .Abfall in cooperation with the unaffected further relay (P) its winding for the Duration of connection short-circuits (20 zh, SP). 3. Circuit arrangement according to claim 1, characterized in that the auxiliary relay (ZH ) is temporarily short-circuited when the long-distance traffic code number (o) is selected by a switching means (dk 10) of a selector (LGW) to be included and, after its drop, in cooperation with a still-mentioned, During the reception of each series of impulses, the control relay (V) that becomes effective causes the immediate remote blocking of the calling line (17Zh ₁ 30z /). 4. Circuit arrangement according to claim 3, characterized in that the auxiliary relay. (ZH) short-circuits the test relay of the call seeker (ijzh). 5. Circuit arrangement according to claim 4, characterized in that the test relay (P) maintains the remote blocking when it drops (4 p) and prevents the permanent short circuit of the auxiliary relay (ZH). 6. Circuit arrangement according to claim. 5, characterized in that the permanent short circuit of the auxiliary relay (ZH) is prevented by opening the contact (5 p) which causes the calling line to be blocked in the case of local connections. 7. Circuit arrangement according to claim 6, characterized in that a rectifier (G) prevents the remote blocking potential (+) from short-circuiting the auxiliary relay (ZH). 8. Circuit arrangement according to claims 2 and 3, characterized in that the auxiliary relay (ZH) the counting relay with each drop. (Z) short-circuits whose fall time is the duration of the. Counter (Zr) influencing current surge determined. For this purpose ι sheet of drawings © 6Ο9 657/15 & 10.56 (609 853 3. 57)