JPS62132461A - Access mode - Google Patents

Abstract

PURPOSE:To make a call not only to a selected telephone set, but also to another telephone set, by calling the selected telephone set when receiving an incoming call from a telephone exchange and, at the same time, calling another telephone set when the count value of call signals exceeds a threshold. CONSTITUTION:When a call signal is sent from a telephone exchange, the bell of a telephone set 3 rings and a call signal detecting circuit 11 detects the call signal and sends a detecting signal to a detected times counter circuit 12 for each detection. The circuit 12 advances the count value one by one when ever it receives the detecting signal and always sends the count value to a threshold comparison circuit 13. The circuit 13 compares the received count value with a threshold and, upon detecting coincidence between them, sends a switching signal to a changeover controlling circuit 10 and a reset signal to the detected times counter circuit 12. Therefore, calls can be done successive ly not only to a selected telephone set but also another telephone set and accord ingly, plural telephone sets can be used effectively.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an incoming call control method for controlling a plurality of telephones connected by a subscriber telephone exchange, and particularly to a switching method or a calling method for the plurality of telephones accommodated. .

(Prior art) As a method of calling a telephone in a call control device that connects to a single line of a general telephone line and switches multiple telephones to connect the line, the conventional method for calling a telephone is the parent-child peep call used in ordinary homes. As shown in , a manual switching device is used to select a telephone from multiple telephones, and when a call is received, only the selected telephone is called.

(Problems to be Solved by the Invention) As mentioned above, in the conventional calling method, only the selected telephone is called. If you are not near the telephone, you may not hear the ringing tone and may not notice the incoming call, and if the called party wishes to answer using a telephone that is not selected, they must switch using the manual switching device. There were drawbacks.

The present invention has been made to solve one or more of the problems and eliminate such drawbacks, and its purpose is to not only call only the selected telephone among a plurality of telephones; To provide a calling method that allows calling other telephones as well.

(Means for Solving the Problems) In order to achieve the above-mentioned objects, the present invention provides an incoming call control device that switches and connects a plurality of telephones to a line.

means for selecting any one telephone from a plurality of telephones accommodated and connecting it to a line; means for detecting and counting ringing signals from the telephone exchange; and a preset threshold for the number of detections and ringing signal detection. and a means for comparing the counted values, and when a call is received, the selected telephone is called, and if there is no response even after the number of detection thresholds has been exceeded, switching is made to call another telephone. It is.

(Example) Next, the present invention will be explained by way of example with reference to the drawings.

FIG. 1 is a block diagram of a call termination control device 1 constructed according to the method of the present invention. 2 is a general telephone line connected to a telephone exchange; 3, 4.5 are telephones housed in the incoming call control device 1; This incoming call control device 1 includes a switching control circuit 10. Calling signal detection circuit 11. Detection number counting circuit 1
2. and a threshold comparison circuit 13. First, the switching control circuit 10 is a circuit that selects the telephones 3 to 5 and connects them to the line 2, and sets the selection priority of the telephones 3 to 5. It has the function of performing switching control using signals. The ringing signal detection circuit 11 has the function of detecting a ringing signal from a telephone exchange, sending a detection signal to the detection number counting circuit 12, and sending out a heliset signal to the detection number counting circuit 12 if the calling signal does not arrive for a certain period of time. It has a function.

The detection number counting circuit 12 counts the detection signals from the calling signal detection circuit 11 and sends the counted value to the threshold comparison circuit 13.
and a function to return the counting circuit to its initial state by a set signal from the ringing signal detection circuit 11 and the threshold comparison circuit 13 (indicated by -.The threshold comparison circuit 13 The detected threshold value is compared with the counted value sent from the detection number counting circuit 12, and a match is detected (-In case, a switching signal is sent to the switching control circuit 10, and the detection number counting circuit 12 has the function of sending out a heliset signal.

Next, the operation of the switching control circuit 10Vc when an incoming call is received while the telephone 3 is connected to the line I- will be described.

When a one-talk exchange call signal is sent out, the bell of the telephone 3 rings, and a call signal detection circuit 11 detects this call signal, and sends a detection signal to a detection frequency counting circuit 12 every time it is detected. In addition.

As is well known, the calling signal is a signal that is sent out for 1 second and then stopped for 2 seconds.

The detection count circuit 12 increments the count every time it receives the detection signal, and constantly sends the count value to the threshold comparison circuit 13. The threshold comparison circuit 13 narrows down the received total, numerical value, and threshold value! When a -1 match is detected, a switching signal is sent to the switching control circuit 10, and a heliset signal is sent to the detection count circuit 12. Switching control circuit 10
When receiving the switching signal, it switches the line to telephone 4 according to the selection priority order (in this embodiment, the order is telephone 3, 4, and 5).

Through the above operations, the call is transferred from telephone 3 to telephone 4. Thereafter, if there is no response from 1g-telephone 4, the call is transferred to telephone 5. Note that if there is a response from the selected telephone, the telephone exchange will stop emitting the signal and enter the talking state. The number counting circuit 12 sends out a reset signal. This causes the detection number counting circuit 12 to return to its initial state.

(Effects of the Invention) As explained in detail above, the present invention detects and counts calls (K) to send calls to multiple telephones, and not only to the selected telephone but also to other telephones. This has the effect that calls can be made sequentially and multiple telephones can be used effectively.

[Brief explanation of drawings]

The drawing is a block diagram of a call termination control device configured according to the paging method of the present invention. 1... Incoming call control device, 2... General call line,
3-5...Telephone, 10...Switching control circuit. 11... Calling signal detection circuit. 12...Detection number counting circuit. 13...Threshold bite circuit.

Claims (1)

[Claims] In a telephone ringing method in a call control device that connects to one line of a general telephone line and switches multiple telephones to connect the line, the call control device selects any one telephone from the plurality of telephones it accommodates, and connects the line. means for detecting and counting ringing signals from the telephone exchange;
It has a means for comparing a preset detection number threshold and a ringing signal detection count value, and when a call is received from a telephone exchange, the selected telephone is called and the ringing signal is counted. . A calling method characterized in that if the count value exceeds the threshold, the selection of the telephone is changed and another telephone is called.