JPS62154837A - Automatic recall system for magnetic card type telephone set - Google Patents

Abstract

PURPOSE:To omit the labor of a calling subscriber for recalling and to remove complicated matters sensed by the calling subscriber or peripheral persons by repeating a call to a called subscriber when the call to the called subscriber executed on the basis of the dialing of the called subscriber's No. from a magnetic card type telephone set is disabled by the covergence of a circuit or speaking of the called subscriber. CONSTITUTION:When detecting the record of recall request information, a central control device 14 records the called subscriber's No. in a storage device 15, temporarily stops the call to the called subscriber and has the calling subscriber send a ringing tone continuously from a calling signal trunk. The device 14 reads out the called subscriber's No. from the storage device 15 after a prescribed period to restart the calling to the called subscriber. The automatic recalling processing is repeated until the called telephone set responds to the call or the calling subscriber gives up the call and hooks on the line. When the call is ended by a called subscriber's response, the recall request information stored in the storage device 15 and the called subscriber's No. are cancelled and then calling processing similar to normal calling is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention Industrial Field of Application The present invention provides a magnetic card type telephone, in which when the called party cannot be called due to line congestion, etc., the called party cannot be called after a predetermined time. This invention relates to an automatic repeat call system for magnetic card telephones that automatically resumes calls.

Conventional magnetic card type telephones collect the amount of calls by subtracting the number of remaining calls recorded on the magnetic card using billing pulses sent from the exchange after the start of a call. .

If the caller is unable to make a call due to line congestion or the called party is busy, the caller must first hang up the handset, receive the ejected magnetic card, and reinsert the magnetic card. Then, after going off-hook, the called party's number is dialed.

Problems to be Solved by the Invention In the above-mentioned conventional caller-based re-calling system, the caller himself has to lift and lower the handset, hand over the magnetic card, and repeatedly dial the called party's number. Not only does the user feel uncomfortable, but others who are waiting for their turn also feel bothered because it takes time to call again.

Structure of the Invention Means for Solving the Problems The automatic recall system of the magnetic card type telephone of the present invention which solves the problems of the above-mentioned prior art is characterized in that the magnetic card type telephone is inputted before dialing the number of the called party. When a specific dial is detected, it is sent to the exchange based on the automatic recall information stored in the magnetic card, and after receiving this automatic recall information, the exchange dials the called party number from the magnetic card telephone. If the called party cannot be called due to line congestion or the called party is busy, the call to the called party is automatically resumed after a predetermined period of time, thereby making it easier for the caller and other people nearby. It is designed to eliminate the annoyance that people feel.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

Embodiment FIG. 1 is a block diagram showing the configuration of an exchange 10 and a magnetic card telephone 20 related to this embodiment of a magnetic card telephone system to which an embodiment of the present invention is applied.

The exchange 10 includes a call path switch 11, a calling register trunk 12, a call path control device 13, a central control device 14, a storage device 15, and an outgoing trunk 16.

The magnetic card telephone 20 includes a magnetic card reading/writing circuit 21, a dial circuit 22, a control circuit 23, and a telephone call circuit 2.
4, a handset 25, and a push button dial (PB) signal sending circuit 26.

The user of this magnetic card type telephone inserts the magnetic card into the position of the magnetic card reading/writing circuit 21 and then inserts the magnetic card into the handset 2.
When the number is increased to 5, the control circuit 23 reads the remaining power in the magnetic card via the magnetic card read/write circuit 21, and after confirming that it is not O, puts the line in an off-footer state.

Central control unit 1 of the exchange 10 that detected this off-footer
i14 selects a vacant calling register trunk 12 and connects it to the line connected to the magnetic card type telephone via the call path switch 11.

When a user who hears the dial tone sent from the calling register trunk 12 attempts to make a call involving an automatic repeat service, he or she dials a predetermined number, such as " Dial ≠#.

When the control circuit 23 detects this predetermined number, it checks whether the user of this magnetic card is a subscriber to the automatic recall service based on the presence or absence of automatic recall request information in the magnetic card. When the control circuit 13 confirms that this user is a subscriber of the automatic recall service, the PB signal sending circuit 1
6 sends predetermined recall request information to the exchange 10 via the communication circuit 14.

The central control unit 14 of the exchange 10 receives and analyzes the signal received by the calling register trunk 12 via the call path control unit 13, and if it detects that this is recall request information, it records this in the storage device 15. The user is notified by sending a predetermined tone from the calling register trunk 12 that the call request has been accepted.

The user who receives this notification dials the telephone number of the called party. This called party number is received by the calling register trunk 12 of the exchange ITO via the control circuit 23, the PB signal sending circuit 26, and the telephone call circuit 24. The central controller 14 of the exchange 10 analyzes the received called party number and initiates a call to the called party.

The central control unit 14 searches for an empty outgoing trunk 16 connected to the line connected to the called party's telephone, and extends the line from there to the called party's telephone via a relay switch or the like. I'm going to go.

The central controller 14 may be in a state of congestion such as the line cannot be extended earlier because there is no free outgoing trunk 16 or there are no free incoming trunks or outgoing trunks in the transit exchange, or if the called party If it cannot be called because it is busy, the presence or absence of recall request information is read from the storage device 15.

When the central control device 14 detects that recall request information is recorded, it records the called party number in the storage device 15,
The ringing of the called party is temporarily stopped, and the calling party continues to output a ringing tone from the ringing signal trunk. The central controller 14 reads the called party number from the storage device 15 after a predetermined period of time and resumes calling the called party. This automatic recall process is repeated until the calling telephone answers or the caller abandons the call and goes on-hook.

When the call is terminated by the called party's response, the central control unit 14 deletes the recall request information and the called party number stored in the storage device 15, and thereafter performs the same process as in the case of a normal call. Perform call processing.

In addition, if the caller immediately performs a normal dialing operation without making a specific dial to request an automatic repeat call, the control circuit 23 of the magnetic card telephone 20 determines that the call is a normal call, and the caller dials the number. immediately sends the called party number to the exchange. The central control unit 14 of the exchange 10 initiates a connection with the called party, and if the connection cannot be established, notifies the calling party of this by sending a busy tone.

Above, we have exemplified a configuration in which the connection to the called party is resumed after a predetermined time both in the case of line congestion comparison and when the called party is busy. In this case, the connection to the called party may be resumed after different times depending on the situation.

In addition, although we have shown an example of a configuration in which a ring tone continues to be sent to the calling party during the re-call process, in order to distinguish it from a non-response state due to the absence of the called party, etc. It may also be configured to send an announcement to the caller.

Effects of the Invention As explained in detail above, the automatic recall system of the present invention has the following effects:
Recall request information is sent from the telephone to the exchange based on the caller's specific dial and the recall request information in the magnetic card.
The exchange that receives this information is configured to automatically resume the line connection to the called party after a predetermined period of time after the call has become unavailable due to line congestion, etc., which saves the caller the trouble of re-calling and allows the caller to The effect is that you and others around you no longer feel bothered.

Additionally, by simply placing the trunk connected to the magnetic card telephone on hold on the exchange side, there is no need to repeatedly receive and analyze the called party number to the calling register trunk, which improves call processing efficiency. is also played.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a portion of a telephone system to which an embodiment of the present invention is applied, which is related to this embodiment. 10... Switchboard, 11... Call path switch, 12... Outgoing register trunk, 13... Call path control device, 14...
- Central control unit, 15... Storage device, 20... Magnetic card type telephone, 21... Magnetic card reading/writing circuit, 2
2...Dial circuit, 23...Control circuit, 24...Telephone circuit, 25...Handset, 26...PB signal sending circuit.

Claims (1)

[Scope of Claims] In a telephone system equipped with a magnetic card telephone and an exchange that accommodates the magnetic card telephone, the magnetic card telephone converts the magnetic card into the magnetic card upon detecting a predetermined dial input prior to dialing the called party number. Based on the stored automatic recall information, the exchange sends it to the exchange, and after receiving the automatic recall information, the exchange calls the called party based on the dialing of the called party's number from the magnetic card telephone. An automatic recall system for a magnetic card type telephone, characterized in that when the called party is unavailable due to line congestion or the called party is busy, the called party is repeatedly called after a predetermined period of time.