JPS6356741B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a general telephone, and more particularly to a recall type general telephone.

Conventionally, in general telephones, callers have multiple subscriber numbers (e.g. ×××−FaGbHcJd,
When dialing the number ×××−FeGbHcJd to a called party who owns a phone number (FeGfHgJh, ~FwGxHyJz), the call cannot be made because the called party is busy or the line is busy. Sometimes. In this case, the calling party hears the busy tone, determines that the connection cannot be established, and disconnects the line. Then, the calling party again dials the same number XXXX-FaGbHcJd or dials another XXXX-FeGfHgJh of the called party. Furthermore, if the call is busy, it is necessary to try this until the called party's phone number ×××−FwGxHyJz.
There were some very annoying flaws.

The present invention has been made in view of the above drawbacks, and when connecting to a called party having multiple subscriber numbers, when the called party is busy, the calling party can switch on-hook and off-hook to receive the called party. To provide a re-call type general telephone set which allows a call to be made by dialing only four digits of a subscriber's number without having to dial all digits of a subscriber's telephone number.

In order to achieve such an object, the present invention provides a means for storing an inputted called party's telephone number in a general telephone set and receiving an n-digit subscriber number inputted in an off-hook state; means for re-memorizing the called party's telephone number by changing only the n-digit subscriber number when receiving the n-digit subscriber number of the calling telephone number; a means for detecting a busy tone; relaying the subscriber's telephone number to the storage means, and when receiving the subscriber's number in an off-hook state, transmitting a disconnection signal and a calling signal to the switching device;
The present invention is characterized by comprising means for transmitting the called party's telephone number stored in the storage means to the switching device when the switching device shifts to a state of receiving numbers.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a block diagram showing an embodiment of the general telephone according to the present invention. In the figure, the general telephone set 1 of the present invention
is connected to the called party 7 via a switching device 6.

Note that, of course, the number of digits of the subscriber number is not limited to four digits, but depends on the number of digits of the subscriber number currently employed in the system.

This general telephone set 1 includes a general telephone circuit 2, a busy tone detection device 3, a control device 4, and a storage device 5. On the other hand, the called party 7 owns telephones with multiple subscriber numbers FaGbHcJd to FwGxHyJz.

The control device 4 controls the general telephone circuit 2 and the exchange device 6, relays the input called party telephone number to the storage device 5, and receives the subscriber number in an off-hook state. At this time, it transmits a disconnection signal and a calling signal to the switching device 6, and when the switching device 6 shifts to the state of receiving numbers, it transmits the called party's telephone number stored in the storage device 5. It functions as a means for transmitting data to the exchange device 6.

Further, the storage device 5 is connected to the general telephone circuit 2.
It functions as a means for accumulating called party telephone numbers sent from the terminal and further accumulating only subscriber numbers input during a busy state.

The operation of the general telephone set of the present invention constructed as described above will be explained in more detail with reference to FIGS. 2 and 3.

When the caller takes off the handset of the general telephone set 1, as is well known, the general telephone circuit 2 sends a calling instruction to the switching device 6, and dialing becomes possible. At this time, in the first step 21, the control device 4
The system waits for the caller to make a call, and when the caller makes a call, the process proceeds to step 22, and preparations are made to store the called party's telephone number.

The caller then enters the called party's phone number, e.g.
When ××−FaGbHcJd is dialed, the dial information is relayed to the exchange device 6 and the control device 4
sent to. In step 23, the control device 4 performs dial confirmation and sequentially sends the received called party's telephone number to the storage device 5. In step 24, the telephone number of the called party is sequentially stored in the storage device 5. below,
Similar processing is performed up to the final digit in steps 23 and 24, and when there are no more dial pulses, the process advances to step 25.

After the caller dials the last digit,
Proceed to step 26 and, as is known,
A connection is made to the regular phone of FaGbHcJd. In step 26, it is checked whether the call can be made or not, and if the calling party and the called party are able to talk, the process proceeds to step 34, in which it is checked whether the call has ended.

On the other hand, in step 26, the called party's telephone number
If a call cannot be made because the FaGbHcJd general telephone is busy or the line is busy, the switching device 6 sends a busy tone to the caller. This state remains off-hook. At this time, the busy sound detection device 3 detects the busy sound and notifies the control device 4 of information on the detection of the busy sound. The control device 4 prepares to distinguish between a disconnection signal and a dial pulse.
Furthermore, it instructs the storage device 5 to store a four-digit subscriber number. At this time, if a disconnection signal is detected, the process proceeds from step 26 to step 34, and the process is treated as finished.

Next, when the calling party dials in an off-hook state in order to connect to a telephone with another subscriber number FeGfHgJh owned by the called party, it is checked in step 27 whether or not redialing is required. The information is sent to the control device 4. Step 27
The control device 4 monitors at a certain timing whether there is a disconnection signal or not, and when it confirms the dial pulse, it proceeds to step 28.
Proceed to. At this time, the busy sound detection device 3 determines whether there is busy sound detection information. If there is no busy tone detection information, the dial pulse is not relayed to the storage device 5. If there is busy tone detection information, the dial pulse is relayed to the storage device.

At step 29, the storage device 5 simultaneously checks the number of digits of the dial pulse and starts storing it in another storage area of the storage device 5. The last digit below (4
digit). If the number of digits is correct, the number from step 28 of the called party's phone number is
At step 30, the numbers stored in other areas of the storage device 5 are stored again in the subscriber number area. If the number of digits is abnormal, the called party's telephone number is not changed and the state shifts to a state in which it waits to receive a subscriber number.

When the storage device 5 normally receives up to the last digit,
A reconnection instruction is sent to the control device 4. Control device 4
When the reconnection instruction is detected in step 30, the reconnection operation begins.

To explain the above operation with reference to Fig. 3, the called party telephone number dialed at the time of the initial call
FaGbHcJd is stored in the regular call dialing area in the storage device 5 in step 24. At this time, nothing is stored in other areas of the storage device 5 (a in FIG. 3). This state remains even if it is detected in step 26 that the called party is busy (3rd step).
b) in the figure. If redial is detected in step 27, the last four digits of the phone number will be entered in step 28.
FeGfHgJh is sequentially stored in other storage areas (c, d in FIG. 3), and when the last number Jh is dialed, the number of digits is checked in step 29. Furthermore, when a reconnection instruction is given in step 30, the memory contents of the regular area are changed, and the
A telephone number FeGfHgJh is configured (e in Figure 3).

That is, in the check at step 29, if the re-dialed number matches 4 digits (preset in the telephone), it is recognized as a "re-call", and only the last 4 digits are stored in the storage device 5. The number is stored sequentially in the area, and then stored again in the last four digits of the regular calling number area of the reconnection memory. As a result, a total of 7 digits for re-calling is created.

Next, to explain the operation when reconnecting, the control device 4
sends a disconnection signal to the switching device 6 to put the general telephone 1 in an on-hook state, then into an off-hook state, and activates the switching device 6 in the off-hook state. When the exchange device 6 is activated, the process proceeds to step 31, where the control device 4 reads out the called party's telephone number using the storage device 5 which stores the called party's telephone number. The process then proceeds to step 32, where the control device 4 sequentially sends the telephone number of the called party to the switching device 6, similar to the condition for sending dial pulses to the switching device 6.

At step 33, it is confirmed that all digits have been sent, and the process returns to step 34, where a check is made until the end of the conversation with the called party. If it is not possible to connect to the regular phone with the called person's phone number FeGfHgJh, return to step 26 and use the processed phone number of the called person as described above.
Repeat call again until FwGxHyJz.

When the caller ends the call and picks up the receiver, the process proceeds to step 35, where the control device 4 monitors the state at a certain timing and then determines a disconnection signal. Upon detection of the disconnection signal, recovery of each device begins.

That is, the control device 4 instructs the exchange device 6 to recover (puts it in an on-hook state), recovers the storage device 5, and also instructs the busy tone detection device 3 to recover. The storage device 5 clears the stored telephone number of the called party.

As explained above, when connecting to a called party who has multiple subscriber numbers, if the call is busy and the call is not possible, dial the n-digit number of another subscriber while keeping the handset off-hook. This has the effect of making it possible to make phone calls.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the re-call type general telephone of the present invention, FIG. 2 is a flowchart showing the operation of the embodiment of FIG. 1, and FIG.
FIG. 3 is a graph diagram showing re-accumulation of memory contents in the illustrated embodiment; DESCRIPTION OF SYMBOLS 1... General telephone, 2... General telephone circuit, 3... Busy tone detection device, 4... Control device, 5... Storage device, 6
...Switching device, 7...Called party.

Claims (1)

[Claims] 1. Means for storing an inputted called party's telephone number in a general telephone set and receiving an n-digit subscriber number inputted in an off-hook state; means for re-memorizing the called party's telephone number by changing only the n digits of the subscriber number when the subscriber number is received; and means for detecting a busy tone;
When the input called party's telephone number is relayed to the storage means and the subscriber number is received in the off-hook state, a disconnection signal and a calling signal are transmitted to the switching device, and the switching device receives the number. 1. A re-call type general telephone set, comprising means for transmitting the telephone number of the called party stored in the storage means to the switching device when the telephone number is transferred to the above-described state.