DE969865C - Device for switching a telephone connection to the order service - Google Patents

Description

ISSUED JULY 24, 1958

D 19219 VIII a 12ΐα ^Ά

has been named as the inventor

The purpose of the invention described below is when switching a telephone subscriber to the telephone order service (FAD) to avoid the previous cumbersome switching measures by the staff in the telephone exchanges and the switching of the telephone connection to the FAD and switching back by the Participants themselves or by the FAD officer by pressing the number switch, i.e. without other cooperation of the office to be carried out.

So far, various switching measures for moving a telephone connection have been and are still now to the FAD in the telephone exchange. Either you switch the subscriber's connection line parallel to the FAD station, so that the ringing stream arrives at both the subscriber and the FAD officer and both can accept the call, or you can block the subscriber in the incoming direction, so that the calls only reach the order service center. The disadvantages of using the first circuit Parallel calls to the subscriber are mainly:

i. There may be disruptions to an existing service call by entering later

809 574/6

the participant and the resulting ambiguities in the calculation of fees'.

2. The officer can "overhear conversations" Participants themselves. The disadvantages of the second circuit without a parallel call at the participant are the following:

1. There are various switchings to be made in the telephone exchange.

2. If there are many requests, the switchovers cannot be made to the minute will.

3. The switchovers are carried out at the specified times, regardless of whether the participant is still or not yet at home.

4. In large local networks with sub-offices where there is no staff in the evenings and during the night is present, no changeovers can be made at these times, although the central order service and large full-time positions can be reached.

It can be seen that the telephone order service both with and without a parallel call to the subscriber very annoying defects adhere to.

The difficulties mentioned can be solved according to the invention avoid if you hold on to the order service without a parallel call to the subscriber and the respective switching and switching back in the hands of the participant or the FAD officer submits without using a department or another department of the office gain weight.

It is known to provide a button on the subscriber set through which the a- or £> -wire of the connecting line can be briefly earthed. A differential relay built into the first selection circuit picks up this earth pulse and switches the connection line to the order service and back again later. However, this arrangement has the disadvantage that for each subscriber who makes an application for order service switching, the aforementioned key must first be installed and an intervention in the preselector circuit must be made.

It is also known to switch a telephone connection to the telephone order service by inserting a cordless isolating plug into the telephone connection to be switched to produce associated jack of an isolating plug-in distributor. This will make the speaking wheels this connection via the contact rails arranged on the long side of the isolating connector connected to the operator. The switch back takes place with this one known system by pulling out the disconnect plug.

In another known system, the switchover to the telephone order service takes place by a code to be sent by the subscriber. This metric is about special Service group selector occupies a service line selection device that has additional switching devices establishes a test circuit to the main distributor to determine the participant there who initiated this switchover. Once the participant has been identified, the switchover takes place this connection to the telephone order service. The later shutdown of the telephone order service is carried out by pressing an earth button attached to the telephone station. at this type of switching to the telephone order service are in addition to the replacement of the normal station against one with earth key also special circuit devices in the Telephone exchange required to call the subscriber who dialed the code to switch has initiated to determine at the main distributor. For this reason, a participant can only from initiate the switch to the telephone order service from his own connection.

The object of the invention is to enable the subscriber to switch to the telephone order service to have it made by yourself. The participant should be given the opportunity to create his own Switching the connection not only from his own intercom, but from any one others too. Furthermore, a replacement of the normal telephone station for one with Earth button or other additional devices can be avoided.

The invention achieves the switch to the telephone order service without any particular changes and interventions in that a subscriber by dialing a code assigned only to him via a relay a changeover relay, via its contacts, which are introduced by a one-time cordless isolating plug tapped from the line selector to the subscriber speaking cores are out, influenced in such a way that the speech wires coming from the line selector to Telephone answering service center can be switched, and that by dialing the same or one another code number over the same relay or another the switching state of the changeover relay canceled and the voice wires are switched back to the subscriber line.

When the Ε relay is in the rest position, the contacts 8 e and 9 e have bridged the interruption of the connection made in the isolating connector from the line selector to the subscriber, so that all calls only reach the subscriber station. If the participant chooses a code that is only known to him, e.g. B. 116427, he reaches via a special line selector b.LW the Ci relay lying on the c-wire of that reversal transmission UmUe, which has been assigned to him from the number of UmUe centrally available in the office. The now responding C i relay switches on the .Ε relay, which is self-sustaining. The contacts 8e and ge switch the line coming from the line selector from the intercom and to the telephone service center. The incoming calls now go to the FAD location FAD-P.

If the subscriber wants to cancel the switch to the order service later, he chooses another key figure known only to him, whereupon-

the relay C 2 responds. The contact 6 c 2 can drop the relay E , and the incoming calls come back to the subscriber station.

The circuit can also be carried out in such a way that the subscriber for both the order and for the downshift has to choose the same code.

Once the plug has been inserted into the relevant isolating plug-in distributor, the participant can You can switch back and forth as you like without the involvement or notification of the Office run often and at any time by choosing its metric.

If the subscriber wishes the final cancellation of the circuit, he informs the clerk of the order service, who then causes the removal of the plug from the isolating connector. The reversal transmission UmUe , which was previously occupied by the relevant subscriber, is now available for use by any other subscriber.

You can give the participant special buzzer signs that indicate that the desired Its connection has been switched correctly (see Fig. 1). So z. B. the Morse code "n-." that the connection is switched to the FAD, and the Morse code, "s. .. «, that the connection is switched back again. About the small probability that it would be a Participant is possible, out of error or malice, the key figure not known to him in and of itself to choose another participant and thereby possibly cause harm, to exclude, is proposed in a further embodiment of the device according to the invention, which Transfer of tax reversal can only be reached by the FAD officer by choosing the code do.

In this case, the participant calls the FAD officer if he wants to switch or switch back on, the z. B. on the basis of an agreed password, the circuit change by dialing undertakes.

Another embodiment of the invention results in the absence of the isolating plug-in distributors.

On the horizontal side of the main distributor Vh , a flat plug F, as used for switching to the notification point, is used on the soldering lugs of the relevant connection A. The plug vS "connected to the flat plug is inserted into a free pawl K , the line of which runs to the FAD location FAD-P . This is where these" execution lines " AL end at the keys of a FAD location FAD-P. When the T key is switched on, the The line in question is connected to a call sign AZ with the AK interrogation handle (see Fig. 2).

If a subscriber T of a connection prepared in this way wishes to switch to the FAD, he dials the FAD's call number, gives the reporting officer his password, whereupon she presses the T key. Incoming calls for the subscriber in question now reach both the subscriber himself and the FAD station, because both are connected in parallel. If the subscriber wants to take the calls exclusively himself again, he prompts the officer to open the T key again. The switching and switching back can be carried out by pressing the T button as often and for as long as the flat connector F is inserted on the soldering lugs.

If the distance between the telephone exchange and the FAD point is several kilometers, it is advisable to use a combination of the last two suggestions to save lines. In the telephone exchange, as shown in Fig. 3, flat plugs F and reversing transmissions UmUe, which are controlled from the FAD station via dialers, are used. The intended line savings are achieved by FAD call searchers FAD-AS , which set themselves automatically via a FAD relay set FAD-R on a calling line.

Fig. 3 shows a circuit in which the same key figure is used for the switchover and for the Downshift can use.

If you want to let the subscriber control the switching and switching back in offices without an isolating plug distributor , the reversing transmissions must be switched as shown by the dotted go line in Fig. 4 between I. VW and reversing transmission UmUe. Via group selection levels GW-S , the subscriber can then also achieve the reversal transmission UmUe.

. The FAD officer can also use the Um-L switchover line to reach the special line selector b.LW in the VStW telephone exchange in order to be able to switch over himself, as requested by subscriber T.

Claims (3)

PATENT CLAIMS: i. Switching device for switching a telephone connection by inserting a cordless isolating plug into the jack of an isolating connector assigned to the telephone connection, whereby the speech wires leading from the line selector _{to the telephone connection are connected to the telephone service center via the longitudinal rails arranged on the isolating plug distributor%} and to switch back to the telephone connection by pulling out the isolating plug, characterized in that a subscriber by dialing a only its associated code via a relay (C or C 1) is an environmental, switching relay (e), via its contacts (8 e 9 e), the tapped by a unique introduced cordless isolating plug from the line selector to the subscriber leading speech wires are influenced in such a way that the speech wires coming from the line selector are switched to the telephone order service center and that by dialing the same or another code via the same relay (C) or another (C 2) the switching state of the switchover relay is canceled and the vspeak wires are switched back to the subscriber connection. 2. Device for switching a telephone connection to the order service according to claim i, characterized in that the transfer of tax reversal is only carried out by the official of the Telephone order service can be reached by dialing. 3. Device for switching a telephone connection to the order service according to Claim 1 or 2, characterized in that instead of isolating plug-in distributors on the horizontal side "of the main distributor via plugs and pawls with outlet lines connected flat plugs used and the execution lines either via reversing transmissions or connected to interrogation devices via switches at the interrogation station. 1 sheet of drawings