DE2918796A1 - CONTROL CIRCUIT FOR AN ANSWERING MACHINE - Google Patents

Description

D.Adophs - I.Berges- M.Florjancic - K.H. Lehnich 4-1-1-2

CONTROL CIRCUIT FOR AN ANSWERING MACHINE

If a call from a subscriber does not go off-hook after several ringing signals, the caller must accept that the subscriber is not present and he will give up trying to talk. To inform the caller that the subscriber has not is present and informs him of the time of return, answering machines are used as an additional device.

However, it often happens that the subscriber is present and also wants to take calls, but is at a greater distance from the telephone e.g. in the garden. When he then perceives the ringing signal and goes to his telephone set, it can happen very often that the caller put on again: has, when the subscriber has reached his telephone set because the caller has assumed that the called party is not present. This is unpleasant for both because the caller has not reached the desired subscriber and the called party is in vain went to the telephone and interrupted work, for example.

The invention is based on the object of providing a control circuit for an answering machine in which a switch-on circuit is provided is that is closed when a call is present and thereby the loop closure and by a playback device

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the submission of a message text is initiated after which The process of triggering the connection takes place, which avoids the disadvantages mentioned above.

This is achieved according to the invention in that a changeover switch

is provided, when activated, an additional switching means, which is only dependent on a switching measure of the called subscriber closes the switch-on circuit, looped in and the release of the connection after Submission of the message text is prevented until the called party reports. This has the advantage that it is ensured is that the called party can accept calls even if he is not near his personal telephone.

Further developments of the invention can be found in the subclaims.

The invention will now be explained in more detail using the exemplary embodiment shown in the accompanying drawing.

In this embodiment, only the details necessary to understand the invention are shown. It is therefore an answering machine was adopted, which can optionally issue one of two different message texts.

The answering machine is connected to the corresponding wires a and b Wires connected to the associated telephone set. It is now assumed that the switches T1 and T2 in the position are drawn. If now a call comes for the subscriber, the ringing current receiving relay R speaks to the To simplify the illustration, the connection of this relay R is only shown schematically. That Relay R is dropout delayed. The delay time is chosen so that the pause between two callsigns is bridged.

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The relay R only drops out again when there are no callsigns more arrive. With the contact rl the start relay S is switched on, which with its contact si the loop over the transferor Ue closes to the office. With the contact s2 the motor M for driving the tape is switched on and contact s3 closes the self-holding circuit for relay 2.

via the tape head TKl is now the one on the corresponding Transfer the trace of recorded text to the caller. It can be an indication, for example, that the called subscriber will not arrive until the evening want to be called. When the text has been transmitted, an end-of-tape signal is generated in a manner not shown. With contacts at and be2 actuated as a function of this signal, the motor M is switched off and the Holding circuit for relay S interrupted. With the opening of the contact si, the loop to the office is interrupted and that The device is in rest position again. However, if the subscriber is present but further away from the telephone set, so he switches the switches T1 and T2 together beforehand.

If now a call comes in, the relay R responds again. Depending on the spatial conditions, contact r3 A call signal can be transmitted to the subscriber via output A. For example, an outside alarm clock W can be switched on at output A. or a wireless transmitter that sends a corresponding signal to a receiver carried by the participant transmits.

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If the subscriber wants to accept the call, he actuates an acknowledgment key QTl ₅ via which the relay Pl is made to respond. In the case of a receiver carried by the subscriber, a transmitter is expediently assigned, and the wirelessly transmitted signal is then picked up by a receiver in the vicinity of the answering machine, which then switches on the relay F1. Such receivers and transmitters are known, for example, from personal broadcasting systems. However, it is also possible to provide acknowledgment buttons which are connected by wire to the input E1 at several points in the area in which the subscriber is when he wants to receive calls.

When the contact fll closes, the start relay S now speaks via the actuated switch T1 and contact Π. Since switch T2 is also activated, the tape head TK2 is now switched to a different one Message text submitted. The caller is informed with this message test, for example that the called subscriber is already on the way to the telephone set and that he should wait a moment. At the same time, the time circuit Z described below is reset with the contact fl2.

When this message has been issued, the end of line contacts open again bei and be2. The opening of the contact be2 has no effect on the self-holding circuit for the relay S, since the Switch Tl is switched and the relay S via the contacts u3; gu and s3 remains. The participant answers then from the telephone set, the contact gu controlled by the hook switch of the telephone set opens and leaves relay S fall off. The loop to the calling party is now put on hold over the telephone. Shouldn't the participant be interested in taking the call, he can press an acknowledgment key QT2 via the relay F2 to A. is brought, talks about the actuated contact f2 Relay U on and is maintained via contacts u4 and s4. Contact ul makes the start relay respond, contact u2 switches to Tonkopf TKl around and contact u3 switches the self-holding circuit for the relay S in dependence on the end of the tape contact be2.

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If the participant has forgotten to switch the switches to the position shown during a longer absence, the correct message text can still be submitted. A time circuit Z is switched on with contact r2 of the pager circuit, which after a specified time, e.g. 20 seconds, causes the relay U to respond and thus the ones already described above Processes.

If the answering machine can only deliver one message, is it is necessary that each time the switch Tl is switched Announcement text is changed. A reversal with the relay U is then also not possible.

It goes without saying that in the implementation of the control of the answering machine instead of the relay shown here electronic switching means or arrangements using microprocessors can be used.

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Claims (8)

PATENT CLAIMS (Iy) Control circuit for an answering machine in which a Inrush circuit is provided when present of a call is closed and thereby the loop closure and through a playback device the delivery of a message text, after which the This triggers the connection marked that a changeover switch (TA) is provided, upon actuation of an additional switching means (fll), which only depends on a Switching action of the called subscriber closes the switch-on circuit, looped in and tripping the connection after submitting the message text up to the message of the called party is prevented. 2.) Control circuit according to claim 1, characterized in that the additional switching means (fl) is operated directly or indirectly via cables. 05/08/79 * CS / Pl-Ti / Bl - / - 030046/0506 3.) control switchgear according to claim 1, characterized in that the additional switching means (fl) is operated wirelessly. 4.) Control circuit according to claim 1, characterized in that for the two different Operating modes different message texts are provided and for this purpose the playback device between two storage means (TK1,2) is switchable (T2). 5.) Control circuit according to claim 1, characterized in that a further switching means (U) is provided, which cancels the effect of the switch (Tl, 2). 6.) Control circuit according to claim 5 »characterized that the switching means (U) is energized by a time circuit (Z), which when not actuated of the additional switching means (flj) according to a predetermined one Time after the occurrence of a call. 7.) Control circuit according to claim 5, characterized in that the switching means (U) through a further switching means (f2) which can be controlled via lines or wirelessly can be actuated. 8.) Control circuit according to claim 1, characterized in that the called party via the The presence of a call via wire or wireless is informed (r3, W). 05/08/79 CS / Pl-Ti / Bl - / - 030046/0506