CS218656B1 - Memory destination dialing dialing device - Google Patents

Abstract

The invention provides a memory target telephone device with preselection, enabling simple selection of telephone circuits and subsequent target selection. The device is intended for testing telephone circuits in testing laboratories. It is used for automated control of the connection device. It is equipped with a programmable memory, controlled from a keypad.

Description

The present invention provides a memory destination telephone device with a preselection that allows for simple selection of telephone circuits and subsequent destination dialing. The equipment is designed for testing telephone circuits in testing rooms. Used to automate the connection device controls. It is equipped with a programmable memory controlled from a keypad.

218636

The present invention relates to a memory target telephone dialing device with a preselection, intended primarily for testing telephone circuits.

In telephone exchanges and testing rooms, it is necessary to carry out a considerable number of telephone circuit tests daily.

These tests are usually carried out by special testing devices, where the selection of individual circuits and subsequent selection of the automatic participant is carried out by a classical rotary dial. The choice of a rotary dial for hundreds of circuits is difficult to operate, very inconvenient and lengthy.

These drawbacks are largely overcome by a memory preselection selectable device, which is based on the known functional circuits being a device which automatically selects consecutive telephone circuits and further transmits the dialing of a preset number, for example an automatic subscriber.

The advantage of the device is that it fully replaces the rotary dial. It is equipped with a keypad to control and store numbers. Automatically sets the prefix to select the connection circuit one unit higher and makes subsequent dialing of up to 16-digit number of the called party from the programmable memory.

The digital display of the transmitted prefix is also an advantage.

An exemplary preselected memory target selection device is schematically shown in the drawing.

The circuitry comprises a push-button set with a code converter 6, which is connected to the select and memory circuit 7, to the switching circuit 8, the shift register 9 and via the counter 10 to the generator 13. The monitoring circuit 13 is connected to the selection and memory circuit 7 the control circuit 12 is interconnected with the select and memory circuits 7, the shift register 9 and the counter 10 backward. The inter-series pause circuit 11 is interconnected to a counter 10 backward, the select and memory circuit 7, and the preset circuit 14. The code converter 6 is connected to the preset circuit 14. Button 4 is connected to the select and memory circuit 7, toggle button 5 to supervisory circuit 13 and button 3 to the preset circuit 14. Terminal 1 is the subscriber loop output, terminal 2 is the short circuit output of the speech circuit.

The code converter button set 6 converts the dialed digits into a binary code. The memory capacity is 3 digits for the preset number and 16 digits for the number of the called party. Depending on the position of the toggle button 5, the number is loaded into the dial and memory 7 or preset 14. The button 3 controls the transmission of the three-digit preset and the occupation of the circuit under test. Preset circuit 14 includes an output for display. Dialing is guaranteed by the control circuit 12 and the counter 10. The interserial pause circuit 11 enables the necessary inter-series pause of 500 ms.

The wiring of a memory target telephone selection device with a prefix according to the invention can be used in telephone test rooms.

Claims (1)

Subject Memory destination telephone dialer with preselection, with preset circuit preselection button and subscriber selection button for recording and transmission of three preset locations and up to 16 subscriber selection sites, characterized in that the dial and memory circuit (7) is connected to a switching circuit (8) having an output connected via a shift register [9] to a counter (10), the outputs (1, 2) being connected to a generator (15) which is connected to a counter (10), ynAlez while the control output the circuit (12) is connected to the select and memory circuit (7), to the shift register (9) and the counter (10) which is interconnected via the inter-series pause circuit (11) to the select and memory circuit (7) and the preset circuit ( 14), wherein the supervisory circuit (13) is connected to the select and memory circuit (7) to the switching circuit (8) and via the preset circuit (14), with the outputs of the code converter (6).