JPH03162095A - Telephone exchange system - Google Patents

Abstract

PURPOSE:To attain dial input of a new destination without troublesome operation in the case of mis-dialing, a busy opposite party or non-reply of opposite party by processing a dial number relating to the entry as a new destination on the condition that a tone by dial input implemented already is being returned. CONSTITUTION:When a dial input comes from a telephone terminal set, whether or not a tone is being returned from a tone return means 702 ie detected and when the tone is being returned, a dial input is processed as the input of a dial number for a new destination by a call processing means 701. When the dial input is given, whether or not a tone is being returned to the telephone terminal set applying the said input is detected and the dial number relating to the input is processed for a new destination on the condition of the return state. Thus, the call to a new destination is attained by dial input only from the state of mis-dialing, busy or no reply.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention 1 (Field of Industrial Application) This invention relates to a telephone exchange system such as a private branch exchange.

(Prior art) Conventionally, in a private branch exchange, when a dial is input from a telephone terminal A, it is detected whether there is a telephone terminal corresponding to the input number, and if there is no telephone terminal, an overflow tone ( If there is a corresponding telephone terminal, it is detected whether the telephone terminal is busy or not, and if it is busy, a special tone (special tone) is sent back.
If the telephone terminal is not idle (idle), a busy tone is sent back to the telephone terminal A, and if the telephone terminal is not busy, a calling signal is sent to the corresponding telephone terminal, and a ringback tone is sent back to the telephone terminal A.

If the overflow tone is returned as above, it is a misdialed call and you need to enter another telephone number, and if the busy tone is returned, enter another telephone number to call another telephone terminal. you need to enter
Even if a ringback tone is returned, if there is no response, it is necessary to enter another telephone number in order to call another telephone terminal. In such cases, with conventional private branch exchanges, it is necessary to enter another telephone number after going on-hook, which poses a problem in that the operation is cumbersome.

In addition, if the above occurs when calling the transfer destination, the call status between the destination party and the telephone terminal performing the transfer operation must be checked, and the transfer hold key must be operated before dialing. However, there is a problem in that the operation is extremely complicated and the other party to whom the transfer is to be transferred can hear the operation sound and feel uncomfortable.

(Problems to be Solved by the Invention) As described above, according to the conventional telephone switching system, when an overflow tone, busy tone, or ringback tone is returned, in order to call another telephone terminal, an on-hook operation is required. , When performing a transfer operation, dial input cannot be accepted unless the transfer hold key is operated after the call state has been established, making the operation cumbersome.

The present invention was made to solve the problems of the conventional telephone switching system, and its purpose is to provide a new system that eliminates troublesome operations when dialing by mistake, when the other party is busy, or when the other party does not respond. An object of the present invention is to provide a telephone switching system that allows dialing of a specific destination.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a telephone terminal, a tone return means for returning a tone corresponding to a dial input from the telephone terminal to the telephone terminal, and the telephone terminal. When there is a dial input from the terminal, the tone return means detects whether or not a tone is being returned, and if the tone is being returned, the dial input is used to input the dial number of a new destination. The telephone exchange system was equipped with a call processing means that performs processing as follows.

(Function) According to the above structure, when a dial is input, it is detected whether a tone is being returned to the telephone terminal where the input was made, and on the condition that the tone is being returned, the dial number related to the above input is changed. Since the call is processed as belonging to a new destination, it is possible to make a call to a new destination simply by inputting a dial in a situation such as incorrect dialing, busy, no response, etc.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the structure of the present invention. In the figure, 1-1. 1-2. 1-3 ,...,1
-n indicates a telephone. Reference numeral 70 denotes a control unit, which includes call processing means 701 and tone return means 702. Telephone 1-
When a dial input is made by key operation from 1 to 1, call processing means 701 detects whether or not a tone based on the dial input is sent to the telephone 1-1 that made the dial input. Here, when the call processing means 701 detects that the tone return means '702 is not returning a tone to the telephone set 1-1, it performs normal call processing based on the input dial number. On the other hand, when the call processing means 701 detects that the tone return means 702 is not returning the tone to the telephone set 1-1, it stops returning the tone and responds to the caller who is sending the tone back. We will also cancel calls, etc.
The dial number related to the above input is received and processed as that of a new destination.

A specific example is as follows. First, phone 1
When the telephone number (a) of the telephone set 1-2 is dialed from -1 (■), the call processing means 701
Check whether 02 is sending back the tone to telephone 1a1-1 (■>). As a result, since the tone was not being sent back at first, a normal call is made to telephone 1a1-2 (■), and the tone is returned. Means 702 returns the ringback tone to telephone 1-1 (■).

Assume that there is no response from telephone 1-2 in this state.

Therefore, telephone 1-1 is currently calling telephone 1-1.
In order to call the telephone 1-3 instead of 2, enter the telephone number (b) of the telephone 1-3 {■}. Then, the call processing means 701 detects whether the tone is being sent back to the telephone 1-1 (■>). At this time, the ringback tone is being sent back and the process branches to YES, so the current call processing (
(call to telephone 1-2) and return of the ring back tone to telephone 1-1, and make a new call to telephone 1-3 based on the currently input telephone number (b). ■). Although the case of the ringback tone has been described above, the same applies to the case of the overflow tone and the busy tone.

The above telephone exchange system is realized as a private branch exchange system shown in FIG. Telephones 1-1 to 1-n are connected to extension circuits (LC) 2-1 to 2-n, and office lines 3-1 to 3-m are connected to office line circuits Fl@(TRK) 4.
-1 to 4-m. Switch times f ¥8 (
SW) 5 is the control rotation ri! 1 (CC) 7, between extension circuits 2-1 to 2-n, or between extension circuits 2-1
2-n and the office line circuits 4-1 to 4-m. The control circuit 7 is a processor that controls various parts via the bus 6 based on the program in the main memory (MEM>8).The tone generating circuit 9 generates a plurality of tones.

A plan view of the telephones 1-1 to 1-0 in the above is shown in FIG. A hook mechanism 12 is provided at the bottom of the handset 11 and is configured to obtain hook information. 13
indicates a dial key, 14 indicates a function key, 14a of the function keys 14 indicates a transfer hold key, and 14c indicates an extension (DN) key. Furthermore, the main memory 8 is provided with a memory table shown in FIG. That is, extension numbers a, b. c. Telephone 1 to which the extension number was assigned in response to...
-1 to 1-n busy/idle and tone return flags are stored. The main memory 8 also stores a silogram of a flowchart as shown in FIG. 5 for operations in the case of transfer, and a program of a flowchart as shown in FIG. 6 for calling an extension. There is.

The operation in the case of transfer will be explained below. Here, a case will be described in which the transfer is performed on the telephone 1-1, but the same applies to the case where the transfer is performed on other telephones.

First, the control circuit 7 connects the telephone 1-
It is detected whether the No. 1 transfer hold key 14a has been operated (201). When an operation is detected, the tone generating circuit 9 is controlled to generate a special dial tone (Special dial tone).
tone) to the telephone 1-1 (202),
The phone number of the forwarding destination is captured (203). Here, it is detected whether the telephone number input from telephone 1-1 is registered in the memory table of FIG. 4 (204).

If the other party is registered, the memory table also indicates whether the other party is busy or idle.
dle) by referring to the busy/idle flag (205), and if it is idle, the number of tone occurrences Fi
@9 and the switch circuit 5 are controlled to send a ringback tone to the telephone 1-1 (206).

Next, the control circuit 7 detects a response (off-hook) while sending a calling signal to the other party's telephone (207).

When there is a response, the switch circuit 5 is controlled to establish a communication path between the telephone 1-1 and the other party's telephone (208).

In the above, when it is detected in step 204 that the input telephone number is not registered, the tone generation circuit 9 and switch circuit 5 are controlled to send an overflow tone (210), and in step 205, the other party's telephone When it is detected that is busy, the tone generating circuit 9,
Control switch 85 to send out busy tone (2
09) If there is no response when calling the other party's telephone in step 207, step 2 is executed in either case.
Proceed to step 11. In this step 211, the control circuit 7 detects whether the extension key 14c of the telephone 1-1 has been operated (21
1) When it is detected that the extension key 14c has been operated, the switch circuit 5 is controlled so as to set the communication path to the telephone that requested the transfer (here, telephone 1-2). 215). Return to step 201 again. This allows transfer via the call state, as in the past. On the other hand, if it is detected in step 211 that the extension key 14c is not operated, it is detected whether the telephone 1-1 is on-hook (212), and if it is not on-hook, a dial operation is detected (213); Return to step 211. If it is detected that a dial operation has been performed, the input telephone number is processed as belonging to a new destination (other party), so step 204
Proceed to. Therefore, if a call is made to the other party (transfer destination) in the forwarding state, but the dial is incorrect (210)
, If the other party is busy (209), or if the other party does not respond (branch to NO at 207), a tone is returned, and from that state, by dialing, the other party's phone (other Note that if an on-phone call is detected in step 212, the telephone 1-1 is placed in an idle state (21,!!).
It will be the end. Furthermore, in each step, flags in the memory table shown in FIG. 4 are set/reset if necessary.

Next, the operation in the case of an extension call will be explained with reference to FIG. When it is detected that the telephone 1-1 goes off-hook (301). The tone generation circuit 9 and switch circuit 5 are controlled to send a dial tone to the telephone set 1-1 (302), and the destination telephone number input by operating the dial key 13 is received (303). Therefore, the control circuit 7 refers to the memory table in FIG. 4 and detects whether the input telephone number is registered (30.11
). If the telephone is registered, it is detected whether the telephone is idle by checking the busy/idle flag in the same memory table [305], and if it is idle, a ringing signal is sent to the other party's telephone and the tone generating circuit 9 is activated. , controls the switch circuit 5 to send a ringback tone to the telephone 1-1 (306). Then, it detects whether an off-hook occurs on the other party's phone and examines the response (3
07) When there is a response, switch #! 5 to form a communication path between telephone 1-1 and the other party's telephone (
308).

In the above, when it is detected in step 304 that the input telephone number is not registered, the tone generation circuit 9 and switch circuit 5 are controlled to send an overflow tone (310), and in step 305, the other party's telephone When it is detected that is busy, the tone generating circuit 9,
Controls the switch circuit 5 and sends out a busy tone (3
09) If there is no response when calling the other party's telephone in step 307, step 3 is executed in either case.
Proceed to step 11. In this step 311, the control circuit 7 detects whether the telephone 1-1 is on-hook (3m+) If it is not on-hook, it detects whether a dial operation has been performed (312), and if not, the process returns to step 311.

If it is detected that a dialing operation has been performed, the process proceeds to step 304 in order to process the input telephone number as that of a new destination (other party).

Therefore, once you dial a certain party, if it is a wrong dial (310), if the party is busy (309), or if the party does not respond (branch to No at 307), a tone will be returned. You can call another phone (the next party) by dialing from that state.
I will be able to do it. Note that when on-hook is detected in step 311, the telephone 1-1 is placed in an idle state (31
3) , becomes the end. Further, setting/resetting the flags in the memory table of FIG. 4 when necessary in each step is the same as in the operation according to the flowchart of FIG. 5.

As described above, in this embodiment, the flag is set to indicate that a tone is being returned.For example, the control circuit 7 may detect that a tone is being returned via the extension circuits 2-1 to 2-n. You can also do this.

[Effects of the Invention] As explained above, according to the present invention, when a dial input is performed, it is detected whether the tone due to the dial input that has already been performed is being returned to the telephone terminal that made this input, and whether the tone is being returned is detected. Under certain conditions, the input dial number is processed as that of a new destination, so a call to a new destination can be made simply by inputting a dial in a state of incorrect dialing, busy, no response, etc. Therefore, at the time of transfer, there is no need to go through the communication state with the other party to whom the transfer is to be made, and the other party does not feel uncomfortable due to hearing the operation sound.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a private branch exchange system configured according to the present invention, and FIG. 3 is a plan view of a telephone set used in an embodiment of the present invention. Fourth
The figure shows a memory table used in one embodiment of the present invention, and FIGS. 5 and 6 are flowcharts for explaining the operation of one embodiment of the present invention. 1-1 to 1-n... Telephone 2-1 to 2-n... Extension circuit 3-1 to 3-m... Office line 4-1 to a-m.
...Station line circuit 5...Switch circuit 6...Bus 7
... Control circuit 8 ... Main memory 9 ... Tone generation circuit 11 ... Handset 12 ... Hook mechanism 13 ... Dial key 14 ... Function key 14a ... Transfer hold key 14C.・Extension key 70
...Control unit 701...Call processing means 702
...Tone return means

Claims (1)

[Scope of Claims] A telephone terminal; tone return means for returning a corresponding tone to the telephone terminal in response to a dial input from the telephone terminal; and tone return means for returning a tone corresponding to a dial input from the telephone terminal; The call processing means detects whether or not the tone is being returned, and if the tone is being returned, the call processing means processes the dial input as input of a dialed number of a new destination. A distinctive telephone exchange system.