SU1210231A1 - Device for automatic readdressing of calls - Google Patents

Abstract

The invention relates to automatic telecommunications and can be used as a prefix to the normal operation of a single subscriber line telephone set. Failover failures are excluded. The device contains a call receiver 1, a transformer 6, a receiver 7 of the local signals, an automatic dialer 8, a forwarding signal generator (GPS) 9, a control signal receiver (PCB) 10, a unit 11 occupied, a control signal generator (GSU) 12, a block 13 switching, switching contacts 2, 3 and 15, disconnecting contact 14 and two wires 4 and 5 of the communication line. When a call arrives from the line, the receiver of the call 1 is activated, which includes the GSM 10, which transmits an AC signal to the line, which is received by the CSP 10, and transmits the command to the block 11 of employment, which connects to the line. Matrix 6. generates commands for switching on the GSP 9, generating an alternating current signal transmitted to the side of the caller, informing him of the fact that the call forwarding process has been implemented, and generating commands to the switching unit 13, switching the incoming path from the line to the choke to simulate a response and the call is held while the call is being forwarded, and the line is on the outgoing path, t Il.

Description

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The invention relates to automatic telecommunications and can be used as an attachment to a conventional telephone set operating on one subscriber line.

The purpose of the invention is to eliminate forwarding failures. ,

The drawing shows an electrical block diagram of the device for automatic call forwarding.

The device contains BbisoBa receiver 1, first 2 and second 3 switching contacts, first 4 and second 5 wires of the communication line, transformer 6, receiver 7 tones, automatic dialer 8, generator 9 of redirection signals, receiver 10 of control signals, unit 11 occupied , generator 12 of control signals, switching unit 13, opening contact 14 and third switching contact 15.

The device for automatic call forwarding works as follows.

In the initial state, the device is ready to receive a call using the nominal number of the absent subscriber and automatically redirect the caller to the line according to the number that the dialed subscriber in the automatic dialer 8 dialed. When a call arrives from the line, the receiver of the 1st call is activated, which turns on the generator 12 control signals and transmits a command B, block 11, which pushes to the line transformer 6o. The generator 12 of control signals transmits a short signal to the line. AC, for example, a frequency of 4000 Hz, this Sig; 1L 10 is received by the receiver control signals, which are generated at the outputs of the command generator 9 for incorporation Perea signals tsresatsii and a switching unit 13. The latter crosses the incoming path from the line to the choke to simulate the light and keep the connection for the duration of the call forwarding, and the line to the outgoing path. The generator 9 call forwarding signals generates an alternating current, for example, a frequency of 900 Hz, which is transmitted to the side of the caller, informing him of the fact that the call forwarding process has been recycled.

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When receiving a command; from the output of the receiver of 1 call, block 11 occupies a transformer 6 to the line. In this case, through the primary winding

the transformer of the power line closes at a constant current., which is equivalent to calling a PBX, i.e. lifting handset. After calling the PBX in this way is connected to

line (it is connected to the outgoing path by that time) through the outgoing register path from which the Ready signal is received. This signal is through the line, block 11, and

the transformer 6 is received by the receiver 7 tones, which activates the automatic dialer 8. It, in turn, translates the spreading and third switching contacts to the working position to disconnect from the transformer 6 line, and its normally closed contacts to 1 Pulse mode for set of currentless impulse series

corresponding to the number recorded for forwarding by the departing subscriber. Disconnection from the transformer line 6 is required to avoid the formation of a single false current pulse,

which register could accept as 1 as the first series of numbers for forwarding. After dialing the number, the automatic dialer 8 again connects the transformer 6 to the LINE, switches its contacts to the initial position, and turns on the generator 12 of the control signals — jT.eKHH. The latter produces an alternating current signal, for example, a frequency

3800 Hz. This signal is received by the receiver 10 of the control signals, which turns off the generator of the 9 redirection signals and forms a command to the block 13 of the calibration. Last

connects the outgoing path to the choke, the caM & E S connects the inlet and outgoing paths to each other. From the generator 9 of the forwarding signals prekrBDtsaetsya the forwarding signals to the caller, who again receives the call sprinkle control signal coming along the outgoing-path that the PBX devices connected to the line that was redirected, In addition, the acoustic signals are controlled by the receiver 7 tones, When calling the line

Three outcomes can be presented to the call forwarding number: the called subscriber is absent and therefore does not answer, the called subscriber by the new number is busy and after a call, another call is canceled. After a long non-response, the caller will hang up, after the end of the last call, the callers will also hang up. At the same time, as well as when a subscriber is busy by a new number, a Zan then signal comes from the PBX. This signal is received by the receiver 7 tones, which transmits a command to block 11 and a generator 12 of control signals, which sends a short AC signal to the line, for example, at a frequency of 3600 Hz. The borrowing unit 11 disconnects the transformer 6 from the line, and a signal with a frequency of 3,600 Hz is received by the receiver 10 of the control signals. The latter forms a command to the switching unit 13, which transfers the outgoing and incoming paths to the initial position, and the entire device is brought to the ready state to make calls again,

Claims (1)

Invention Formula An automatic call forwarding device comprising a call receiver, the first and second outputs of which are connected via the first and second switching contacts to the first and second wires of the communication line, respectively, a transformer, the first and second outputs of which are connected respectively to the first and second inputs of the tone receiver, the first output of which is connected Compiled by A. Levitska Editor 0. Golovach Tehred I.Astalosh Corrector L. Patay Order 533/60 Circulation 624 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Branch PPP Patent, Uzhgorod, st. Project, 4 ten 15 20 10231. An input of an automatic dialer, characterized in that, in order to avoid redirection failures, a redirection signal generator, a control signal receiver, a occupation unit, the first input of which is connected to the second output of the tone signal receiver, and the second the input of which is connected to the second input of the occupation unit and the output of the call receiver, the first and second outputs of which are connected to the first and second outputs of the control signal generator and the second and third inputs b Accordingly, the third input of the control signal generator is connected to the output of the automatic dialer, and the first output of the occupancy block is connected to the first input of the transformer through serially connected disconnecting and third switching contacts, the second input of which is connected to the second output of the occupancy block through the third switching contact to the input of the transformer, and the first and second inputs of the control signal receiver are connected to the first and second wires of the communication line and the first and second outputs The switching unit, respectively, the first output of the control signal receiver is connected to the input of the redirection signal generator, the first and second outputs of which are connected to the first and second inputs of the switching unit, respectively, the third input of the switching unit is connected to the second output of the control signal receiver, and the third and fourth outputs of the block the switches are connected to the first and second wires of the communication line, respectively. 0 five 0