DE1065020B - Arrangement for measuring the number and possibly duration of outgoing and incoming connections in telecommunication systems, in particular telephone systems - Google Patents

Description

The invention relates to a circuit arrangement for Counting of outgoing and incoming connections in telecommunications, in particular Telephone systems.

Arrangements for counting outgoing and incoming connections, ie counting on the calling as well as on the called line, are known several times. B. by the Austrian patents 118 524, 121 818, 121 433, 125 582, 131 948, 152 698, German patent 533 054, British patent 329 684. The known arrangements usually show counting of outgoing and incoming connections by one and the same counts on the connecting line, but also separated by two counters for outgoing and incoming traffic (e.g. British patent 329 684, Fig. 1). In all known arrangements, the counters are permanently installed in the subscriber circuits assigned to the connection lines in the office, which means, however, that the requirement of mutual counting in existing systems with one-sided counting can only be met by considerable changes and interventions in the existing subscriber circuit. In addition, the changes have to be different, depending on the type of preselection organ, whether call seeker or preselection.

The invention is based on the object of a device for counting outgoing and incoming To create connections which can be used universally for all connecting lines, regardless of whether these are lines that are connected to selection line selector or call finder line selector sets are connected. The arrangement should also be retrospectively without intervention or changes have existing subscriber circuits attached. According to the invention this is achieved by a set of switching means, which in the same way to existing subscriber circuits both of pre-selection line selection sets as well as call searcher line selection sets can and its relay depending on the state of the preselection organs occupied by outgoing connections or in incoming traffic depending on the state of the seizing line selector and a from this given identifier the various counters for outgoing or incoming connections turn on.

According to a further embodiment of the invention, the circuit set consists of two relays, of which the one only monitors the condition of the connection line, while the second relay determines the direction of the respective connection. It is after a further embodiment of the invention, the second relay in the incoming traffic by one from the Line voter given, temporary identification arrangement for measuring the number

and, if necessary, duration of outgoing

and incoming connections

in telecommunications, in particular

Telephone systems

Applicant:
Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Paul Gonschior, Munich,
has been named as the inventor

Character influenced, preferably by the alternating current of the first call.

Figs. 1 and 2 show embodiments of the invention, namely

Fig. 1 shows an embodiment for preselector line selector,

Fig. 2 shows an embodiment for call searcher line selectors.

The switch set according to the invention 5 "is in both Cases the same. He will, such as B. indicated in Fig. 1, with the help of a plug Λ and a pawl three-pole connected to the two speech wires and the test wire in the office; these lines are in the usual way with an output of the line selector as well as the call finder or an output of the line selector and the input of a preselector.

Fig. 3 shows the summary of the counting devices of several lines of a line group, z. B.

the lines of a hunt group area with ten lines, for example, to a common Device in which a common counter only shows the status »All lines busy«.

In Fig. 4 the series connection of several,

z. B. two devices for a line group shown in FIG. 3, in which the counting of the "AlIe lines occupied" status for both line groups using only the common meter of the second device.

1, the inventive switching set £ "and its mode of operation when applied to a preselector line selector set will be described in detail. In the top left of the figure, a subscriber station Tn is indicated which has a

909 627/106

two-wire subscriber line TL is connected to the office. As is known, the subscriber line in the office is led to an output of the line selector LW indicated at the top right in the figure and, parallel to this, to the input of a preselector VW indicated at the bottom left. The relay set 5 ¹ is connected to the two speech wires a, b and to the test wire c in three poles with the help of a plug and a jack. The high-resistance relay A of the switching set, connected to the test wire, responds when the connection line is free in the following circuit:

1. +, A, GrX, c-Ader, trc, r, c-arm (VW in zero position), TI, TII, d-arm (VW in zero position, -.

Test relay T of the preselector does not respond in this circuit. Relay A of switching set 6 * applies relay B to the two speech wires through its contacts aX, a2. In a Graetz full-wave rectifier circuit, relay B can respond to alternating current. However, relay B is not energized when the connection line is free. The combination of states of the two relays "Relay A energized, relay B not energized", because contact α 3 is open, therefore has no effect on the counters.

If now z. B. initiated an outgoing call by lifting the handset of the subscriber station Tn and this closed loop, the line relay of the R \ ^r orwählers speaks in a known manner via the subscriber loop, which then brings the selection for starting. The preselector goes out of the zero position and checks for the next free line to a group selector, whereby its relay T responds and stops the selector. As soon as the preselector turns out of the zero position, relay A of switching set S drops out (see circuit 1). Relay A drops out with a delay due to the parallel connected capacitor C1 in series with resistor WiI via contact 54. The two relays A and B have thus dropped out. This state marks the activation of the counter Zb for outgoing connections:

2. +, button TT (flipped), aZ, Gr2, b2, Wi2, Zb, -.

45

This counter counts the occupancy of the line TL in the outgoing direction. Via contact e.g. 2 and a timer contact, e.g. B. Contact 1 see, the counter Za is switched on and operated in the following circuit for the duration of the connection:

3. +, lsec, zb2, Za, -.

This counter measures the duration of the outgoing occupancy of the line.

When the calling subscriber hangs up his receiver, the connection is released in a known manner. The selection returns to the rest position; this restores the idle state. Relay A of the switching set responds again via the c-wire to the preselector (see circuit 1), it interrupts the circuit for the counter Zb ; Counter Zb interrupts the circuit for counter Za.

If the connection line TL is occupied by the line selector LW when it arrives, the test relay P of the line selector is excited against the test relay T of the preselector via the c-wire in the usual way when checking for the free line. The high-resistance winding (not shown) of the test relay P is short-circuited via contact pX , so that only the low-resistance winding P shown is located in the test circuit. Relay A of switching set S is short-circuited by earth on the c-wire in the line selector and the low-resistance winding P and brought to waste. Relay A drops out with a delay. After the relay P has responded, the call stream of the first call is sent from the line selector to the desired subscriber in the usual way. As is parallel to the subscriber line relay B at the two speech wires, relay B is energized during the fall time of the relay A through this ringing current:

4. +, RSM (call generator), p2, Yl, a-Arm (LW), tra, al, Bl, C2, a2, trb, b-Avm (LW), YIl, -, + ■

Relay B responds and remains locally via a second winding after relay A has dropped out:

5. +, TT, a3, bl, bll, -.

Relay B cancels the attenuation of relay A by opening contact b 4, so that it now drops off quickly. In the line selector, after the called subscriber Tn has picked up, the feed bridge relay Y responds and switches off the ringing current in a known manner. In relay set 5 * the relay status »relay A dropped out, relay B energized« switches on the counter Zc for incoming occupancy:

6. +, TT, aZ, Gr2, bZ, Wi3, Zc, -.

This counter counts the occupancy of the line TL in the incoming direction. He then switches on the counter Zd :

7. +, Xsee, sc2, Zd, -.

This counter measures the duration of the incoming occupancy.

If the called subscriber hangs up his receiver after the end of the call, the relays Y and P in the line selector LW come to waste in a known manner. The short circuit of relay A of switching set 5 is canceled again. Relay A is activated via the c wire to the selection. It interrupts the hold circuit of relay B, which means that counters Zc, Zd also fall. The status “relay A energized, relay B de-energized” has now restored the status “connection line free”.

In Fig. 2, the same reference numerals are chosen for the same switching elements. In particular, the subscriber's own relays of the subscriber circuit of the call seeker AS are also denoted by R and T. The subscriber Tn and the subscriber line TL can again be seen on the left in the figure, and the line selector LW at the top right, and the call searcher AS at the bottom left in the figure. The switch set S is connected to the line. Relay A is connected to the c-wire and in this case is excited via the participant's own relays R, T:

8. +, A, GrX, Rl, T, -.

The relays R and T do not respond in this circuit. Relay B is applied to the speech wires, but not energized. The status "relay A energized, relay B not energized" identifies the free subscriber line. None of the counters is switched on.

If the outgoing subscriber seizes the connection line TL , the call seeker is stimulated in a known manner. He is looking for the calling line.

As soon as he finds this, a test relay (not shown) in the caller responds to which, via its contact p _AS, the c wire to the subscriber circuit connects to earth in order to energize the relay T , which activates the line. At the same time relay A is short-circuited and made to drop out. The state »Relay A and B dropped« in turn causes the counter Zb for outgoing assignments in the switching set S to be switched on. At the same time, the counter Za , which measures the occupancy time, is switched on. In series with the counter Zb there can be a totalizer (Erlangmeter ErI 1), which is expediently provided for several lines together. When the connection is triggered by the calling subscriber, the feeder bridge relay Sp and the test relay, not shown, come to waste in the call searcher. This removes the short-circuit for relay A of switching set 5 ". Relay A responds again. This restores the" connecting line free "status.

If the subscriber line is seized by the line selector LW in the incoming traffic, the test relay P of the line selector responds via the c-arm to the subscriber's own relays R, T of the subscriber circuit. Relay A of the switching set VS "is short-circuited via earth and the low-resistance winding of the test relay P in the line selector and released. Relay B is still connected to the speech wires during the release time of relay A. It is again excited by the ringing current and then persists locally via its second winding. The counters Zc and Zd for incoming occupancy are energized again due to the relay status "relay A dropped out, relay B energized." A totalizer BrI 2 can again be in series with counter Zc.

When the called subscriber triggers, the ground is removed from the test wire in the line selector when the test relay P drops out, and the short circuit of relay A is thus canceled. Relay A responds again via the subscriber's own relay, relay B drops out. The status »marked by the free subscriber line« is thus restored.

3 shows an arrangement in which not only the occupancy status of the individual lines is measured by the counter, but also the occupancy status of an entire line group. For this purpose, the common counter GS is used to which a z. B. manually adjustable step switch DS the contacts of the counters of the individual lines are guided one behind the other in a chain circuit. Assume that ten lines are busy counting. This arrangement is useful for a group of related lines, e.g. B. so-called hunt groups. If all lines of such a hunt group are busy, be it in the outgoing or incoming direction, the switch DS must be set to position 10, the counter GS is then switched on in the following circuit:

9. +, Tv 2 (button contact ), zcl (incoming assigned), zb2 (outgoing assigned), ... e.g. 10 (outgoing assigned), DS, (10), button contact Tv3, GS, -.

The common counter GS can in turn suitably switch on the counter GZ via its contact gs and seconds switch 1 see , which measures the period of time during which the entire line group is occupied.

Depending on the number of lines to be monitored by a common counter, the step switch DS must be brought to the corresponding contact and connected to the corresponding branch of the contact chain. Are z. B. to monitor only the first two lines together by the counter GS , the step switch DS is to be set to step 2 and this step, as indicated by dashed lines, to be connected to branch 2 of the contact chain, which only the contacts of the counters of the first two Contains lines.

In the circuit, a toggle button TV ₁ is also noteworthy, which allows several similar devices of the same type to be switched one behind the other.

In Fig. 4 such a series connection of two such devices Gert and Ger2 is indicated. Of course, if necessary, more than two such devices can also be connected in series. For this purpose, the TV buttons must be pressed in both devices. In addition, earth must be applied to connection G 2 in the first device, while in the second device a connection k (indicated by dotted lines) must be made from connection point G 3 to the counter GS of this device. When all lines in both line groups are busy, the following circuit is established:

10. Earth, line η (dashed), G 2, Tv 1, sei, ze 2 ... ze 10, DS, (10), Tv 4, Gl, connection χ from Gerl to Ger 2, connection Gl, Tv 4 , DS, (10), sclO. . . zcl, TvI, connection point G 2, connection f, connection point G 3, connection k, GS2, -.

For the sake of simplicity, it is assumed that all lines of the two line groups are incoming are occupied.

Claims (13)

Patent claims: 1. Arrangement and measurement of the number and possibly duration of outgoing and incoming connections by two counters or measuring devices assigned to the connection lines, in telecommunication systems, in particular telephone systems, characterized by a set of switching means (A, B), which are connected in the same way to existing subscriber circuits can be switched on by preselector line selector sets as well as by call searcher line selector sets and its relays depending on the state of the preselection devices occupied by outgoing connections or in incoming traffic depending on the state of the occupying line selector and a code given from this the various meters (Zb, Zc) Activate for outgoing or incoming connections. 2. Arrangement according to claim 1, characterized in that a relay (A) of the relay set, regardless of the traffic direction of the respective connections, only monitors the state of the connection line (free or occupied), while the second relay (B) depends on the state of the preselector or determines the direction of the respective connection (outgoing or incoming) using the identifier given by the line selector. 3. Arrangement according to claim 2, characterized in that different combinations of states of the two relays are evaluated in such a way that one (Zb) is switched on when the line is busy and a second counter (Zc) is switched on when the line is busy. 4. Arrangement according to claim 2, characterized in that the relay (A) monitoring the state of the connection line is connected to an auxiliary wire, preferably test wire (c), of the subscriber circuit. 5. Arrangement according to claim 4, characterized in that one relay (A) is designed as a high-resistance relay and is energized when the connection line is free via the subscriber's own relay, without influencing them, but with outgoing and incoming occupancy of the line to waste. 6. Arrangement according to claims 2 or 4, characterized in that the state of the connection line monitoring relay (A) when it is energized, the second relay (B) applies to the line, preferably its speech wires, and the latter only through incoming connections a temporary identifier given after the line selector has been checked for the connection line, preferably the alternating current of the first call, is excited. 7. Arrangement according to claim 6, characterized in that the relay (A) monitoring the state of the subscriber line is caused to drop when the connection line is occupied via blocking potential on the test wire from the line selector, but due to drop-out delay the second relay (B) is a sufficient one remains switched on for a long test time at the line selector connection, in order to keep locally on this path, stimulated by the ringing current, after the stimulus circuit has been opened. 8. An arrangement according to claim 3, characterized in that each of the outgoing or incoming occupancy counting counters (Zb or Zc) turn on a second counter (Za, Zd) counting the duration of the occupancy. 9. Arrangement according to claim 3, characterized in that in series with the number of occupancy counting counters (Zb, Zc) totalizers (Erlangmeter ErIl ₁ Er 12) are connected, which several connecting lines are assigned together. 10. Arrangement according to claims 1 to 9, characterized in that a group of connection lines, in particular the lines of a hunt group area, a common counter (GS) is assigned which, controlled by the occupancy counters of the individual connection lines, only the busy state of all lines of the Group displays. 11. The arrangement according to claim 10, characterized in that the contacts (zcl, zc2. .. ze 10 or zbl, zb2 ... zb 10) of the actuated counters of the lines of a group in a daisy chain connection to the common counter (GS) are. 12. Arrangement according to claims 10 and 11, characterized in that the common counter via a step switch (DS) is optionally guided as required to branches of the contact chain which contain a different number of series-connected counter contacts. 13. The arrangement according to claim 11, characterized in that with the help of changeover contacts (TvI ... TvIV), the chain circuit of the counter contacts of a line group is separated from its associated common counter and via corresponding connections in series with the chain circuit of the counter contacts of another line group (or several line groups) to whose now both line groups jointly measuring counter is led. Considered publications:
German patent specification No. 406 309. 1 sheet of drawings © 909 627/106 9.59