JPS5983448A - Recalling signal transmitting method - Google Patents

Abstract

PURPOSE:To attain surely the call to an opposite party in a short time, by using a howler tone transmitting means, transmitting a signal to an opposite party hooking off a handset of the telephone set and making recalling. CONSTITUTION:Telephone sets 1, 2 are connected to the exchange 3. The exchange 3 uses a line circuit group 4, trunk group 5 and a main switch 6 as a channel system device, and includes a channel controller 7 and a central controller 8 controlling the connection. A line circuit 41 or 42 monitors the state of the telephone set 1 or 2 to be connected thereto. A calling tone trunk 51, set end tone trunk 52, call trunk 53, register trunk 54, waiting trunk 55, howler trunk 56, and a calling signal trunk 57 monitor the line of the telephone set side, informs the state to a controller 7 for reception of prescribed control. The main switch 6 connects or disconnects the channel with the position information of the both designated from the controller 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transmitting a recall signal, and particularly to a method for transmitting a recall signal in a telephone exchange.

In the conventional recall signal sending method, after the called party puts the receiver on-hook after a call, the exchange transmits a ringing signal as a recall signal at the caller's request, and the telephone rings the telephone bell. Call the caller again. In this method, even after the operator calls the telephone and the call ends and the called telephone goes on-hook, the call path is put on hold, and the operator operates the recall signal sending button as necessary. This is based on the procedure of having the exchange call the telephone again.

In this way, in the conventional method of transmitting a recall signal, a recall signal is transmitted and the called party can be recalled only after the called party puts the handset on hook. The disadvantage is that when the person puts the receiver on hold and leaves the phone, the service deteriorates because the person has something to do and wants to convey it to the other party, but is unable to do so and the other party disconnects the call. There is.

An object of the present invention is to improve services by sending a signal to the other party who is far away from the telephone to notify them of a re-call by utilizing a howler sound sending means that alerts the subscriber when the telephone receiver is disconnected. An object of the present invention is to provide a method for transmitting a recall signal.

The method for transmitting a recall signal according to the present invention is such that, in a telephone exchange, when the first and second "1-talk" devices are in a talking state and a predetermined signal is transmitted from the first telephone A first telephone set is connected to a register to send out a dial reception ready tone, and a second telephone set is connected to a temporary waiting means to send out a waiting sound, and a call forming circuit is stored and released. When the register receives a dial of a predetermined recall code or number from the first telephone that has received the ready tone, the waiting section sends a howler tone to the second telephone. When the connection is changed and the connection is changed from the register to the set completion sound sending means for the first telephone, and the second telephone connected to the howler sound sending means goes on-hook, the above-mentioned changing the connection from the cent completion tone sending means to the ringing tone sending means for the first telephone, and changing the connection from the howler sound sending means to the ringing signal sending means for the second telephone; When the first telephone is in the on-hook state and the second telephone connected to the howler sound sending means is in the on-hook state, the calling signal sending means is connected to the first telephone and the second telephone is connected to the second telephone. When the telephone set is released from the howler sound sending means and placed on hold, and a first telephone connected to the calling signal sending means answers, a ringing sound is sent from the calling signal sending means to the first telephone. and when the second telephone set is released from the hold state and the calling signal sending means is connected to the second telephone set, and the second telephone set currently connected to the calling signal sending means answers, the first telephone set is and the second telephone set are respectively released from the ringing tone sending means and the calling signal sending means and connected to one communication circuit to close the communication path.

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing a relay system for explaining an embodiment of the recall signal calling method of the present invention, and FIG. 2 is a flowchart showing an operation sequence of the relay system shown in FIG.

In FIG. 1, telephones 1 and 2 are connected to an exchange 3. In FIG. The exchange 3 has a line circuit group 4, a trunk group 5, and a main switch 6 that accommodates these as communication path system devices, and a communication path control device 7 that connects and controls the communication path system devices, and further controls the main operations of the exchange 3. A central control unit 8 is included.

The line circuit 41 or 42 is connected to the telephone 1, respectively.
Alternatively, the state of 2 is monitored and the information is notified to the communication path control device 7.

The ring tone trunk 51 sends a ring tone to the connected off-hook telephone, and the set completion tone trunk 52 sends a set completion tone to the telephone dialed for setting after dialing the service. , the call trunk 53 forms a call circuit to the telephones 1 and 2 through the main switch 6, and the register trunk 54 sends out a special dial tone (dial reception ready tone) to the connected on-hook telephone. After receiving the post-dial code or number, the waiting trunk 55 sends out a waiting tone or waiting music to the connected off-hook telephone, and the howler trunk 56 sends out a hollering tone to the connected off-hook telephone, and sends a ringing signal/waiting music. Trunk 57 sends a ringing signal to the connected on-hook telephone. These trunks monitor the line on the telephone side and notify the communication path control device 7 of its status.
Subject to prescribed control. The main switch 6 is the communication path control device 7
The communication path is connected or disconnected based on the location information of the two parties specified by the communication terminal. The communication path control device 7 is directly connected to the line circuit group 4, the main switch 6, and the trunk group 5 of the communication path system devices to exchange information, and receives instructions from the central control device 8 by exchanging information and controls the communication path devices. do.

Next, the connection operation within the local station will be explained with reference to the operation steps shown in FIGS. 1 and 2. Telephone 1 and telephone 2 shown in FIG.
When the phone 1 is connected to the call trunk 54 via the telephone 66 and the call circuit is closed and is in a call state, if the telephone 1 performs a hooking operation, the call trunk 5/1 detects this and notifies the call path control device 7. By notification, the communication trunk number along with the hooking information is notified to the central control unit 8 (operation step 81. Similarly, see FIG. 2 below). The central control unit W8 connects the connected call trunk 54.
The register trunk 5 stores the respective numbers of the telephones 1 and 2, and selects the telephone 1 on which the hooking operation was performed in operation step S1.
Step 3: connect the telephones 2 of the other party during the text conversation to the waiting trunk 55 by the main switch 6, instruct the communication path control device 7 to disconnect from the communication trunk 54, and accommodate these related devices by the main switch 6. Although the location is notified (operation step 82), the call trunk 54 of the connecting circuit that was in use for the call is erased while also storing the information of the telephones 1 and 2 on hold. The communication path control device 7, which has received the notification in operation step S2, controls the main switch 6 to disconnect the connected links 64 and 66, while connecting the telephone 1 and the register trunk 53 via the link 64, and disconnecting the telephone 1 from the register trunk 53. A special dial tone is sent from the register trunk 53 to the telephone receiver (
Operation step S3), the other telephone 2 and the waiting trunk 5
5 through a link 67, and the waiting tone (or music) is transmitted from the waiting trunk 55 to the handset of the telephone 2 (operation step 84).

When the telephone 1 receives a special dial tone in operation step S3,
A predetermined code "'is" for re-calling is dialed, this dial is received by the register trunk 53, and further notified by the register trunk 53 to the channel control device 7, and as a result, the channel control device 7 dials the code "18". The register trunk number along with the information is notified to the central controller 8 (operation step 85).

In operation step S5, the central control unit 8 reads the stored connection information, and transfers the telephone 1 from the register trunk 53 to the set completion tone trunk 52, and the telephone 2 from the waiting trunk 55 to the howler trunk 56 corresponding to the code l+181+. The main switch 9 instructs the communication path control device 7 to change the connections at the switch 6, and also notifies the accommodation positions of these related devices at the main switch 6 (operation step 86). Through this operation step S6, the communication path control device 7 controls the main switch 6 to disconnect the currently connected links 63 and 67, and on the other hand, connects the telephone 1 and the set completion tone trunk 52 through the link 62,
A set completion tone is sent to the handset (operation step 87).
), on the other hand, link 6 between telephone 2 and Howler Drunk 56.
8, a howler sound with a varying level is sent out from the handset heehaura trunk 56 of the telephone 2, which is low at the time of connection and then gradually increases from the handset removed from the ear (operation step 8B).

Due to this operation step S8, the telephone 2 places the handset on the hook in case it is difficult to make a call, so it becomes on-hook state.
The Howler Drunk 56 detects this and notifies the call path control device 7, and as a result, the call path control device 7 notifies the Howler Drunk number together with the on-hook state information of the telephone 2 to the central controller 8 (operation step S9). Operation step S7
According to 10- After hearing the set completion sound, the frozen state remains unchanged until the telephone receives the 1 digit set completion sound until operation step S9, and
There are cases where the handset is placed on the hook and the phone goes on-hook, and cases where the phone goes off-hook for another call after being placed on-hook. First, when the telephone 1 reaches operation step S9 with its state unchanged, the central controller 8 transfers the telephone 1 from the set completion tone trunk 52 to the ringing trunk 51, and the telephone 2 from the Howler Drunk trunk 56 to the ringing signal trunk 57. Operation step sio) instructs the communication path control device 7 to change connections at the switch 6 and notifies the accommodation positions of these related devices at the main switch 6. Through this operation step SIO, the communication path control device 7 The switch 6 is controlled to disconnect the connected links 62 and 68, and on the other hand, the telephone 1 and the ring trunk 51 are connected by the link 61, and the ring tone is sent from the ring trunk 51 to the handset of the telephone 1 (operation step 811), on the other hand telephone 2 and ring signal trunk 57
is connected by a link 69, and a calling signal is sent to the telephone set 2, causing the bell to ring (operation step 512). Next, when the telephone 1 reaches operation step S9 in the on-hook state,
The central control device 8 connects the telephone 1 to the ring signal trunk 57, instructs the communication path control device 7 to release the telephone 2 from the howler trunk 56, and notifies the accommodation positions of these related devices in the main switch 6. , puts telephone 2 on hold (action step 513). Through this operation step 813, the communication path control device 7 controls the main switch 6 to disconnect the connected link 68 and release the telephone set 2, and also connects the telephone set 1 and the ringing signal trunk 57 through the ring 65 to send a ringing signal to the telephone set 1. A calling signal is sent from the trunk 57 and the bell of the telephone ml rings (operation step 514). When the telephone 1 responds and enters the off-hook state in operation step 814, the ring signal trunk 57 detects this and notifies the call path control device 7, and as a result, the call signal trunk 57 transmits the call signal trunk together with the off-hook state information of the telephone 1. Notify the number to the central controller 8 (operation step 515)
. In operation step 815, the central controller 8 retrieves the connection information from the memory, switches the connection of the telephone 1 from the ringing signal trunk 57 to the ringing trunk 51, and performs call path control to connect the telephone 2 on hold to the ringing signal trunk 57. Mounting H
7, and also notify the accommodation positions of these related devices in the main switch 6 (operation step 816). This operation step 816 causes the communication path control device 7 to switch the main switch 6
control to disconnect the connected link 65, connect the telephone 1 and the ring trunk 51 through the link 61, and send the ring tone from the ring trunk 51 to the handset of the telephone 1 (operation step 817), and the other Then, the telephone 2 and the ringing signal trunk 57 are connected by a link 69, and a ringing signal is sent to the telephone 2 from the ringing signal trunk 57, causing the bell to ring (operation step 818).

Further, when the telephone set 1 once enters the on-hook state and then goes to operation step S9 while in the off-hook state due to another call, the central controller 8 obtains information through the line circuit 41 that the telephone set 1 has entered the on-hook state. Operation step 8
Operation 13 is started. When the telephone 2 responds to the ringing of the bell in operation step 812 or 818 and enters the off-hook state, the ringing signal trunk 57 detects this and notifies the communication path control device 7. As a result, the communication path control device 7 receives the off-hook state information of the telephone 2. At the same time, the calling signal trunk number is notified to the central controller 8 (operation step 519). In operation step 819, central controller 8 retrieves connection information from memory and connects telephone 1.
from the ringing trunk 51 and the telephone 2 from the ringing signal trunk 57 to the specified speech trunk 54, and notify the accommodation positions of these related devices in the main switch 6. Operation step 8
20) Through this operation step 820, the channel control device 7 controls the main switch 6 to switch the currently connected links 61 and 6.
9 is disconnected, and telephones 1 and 2 are connected to telephone trunk 54 by links 64 and 66, respectively, to close the telephone circuit between telephones 1 and 2 (operation step 521).

In this way, telephones 1 and 2 connect to link 6 of main switch 6.
4 and 66 to the telephone trunk 5414-, the telephone circuit is closed, and the telephone is in the telephone state, when the party on telephone 2 places the receiver on the desk for a long time, for example, searching for documents, etc. The caller notifies the other party, disconnects the call, and dials again. However, if what should be a short call ends up taking a long time, the person waiting for the phone call 1 has an emergency and calls from the phone. When you need to leave the handset, the present invention allows you to call the first telephone even when you are not on the receiver's ear.
It is possible to notify the user that the N1 phone will be disconnected, and when the call is made on the N1 handset 2, the user can be immediately called and conveyed the new business. Furthermore, although there are some differences in the constituent devices and their functional assignments, the switching equipment and its operating procedures described above are included in a general switching system.

In this embodiment, the operation has been explained using a connection within the own station, but it is also possible to connect between stations by implementing a signaling system that allows information exchange. In addition, although the explanation was made assuming that the prescribed operation is 7 knocking followed by dialing 118", it is hooked.

It can be realized by combining general exchange systems such as combinations of dial operations and additional button operations, special service set operations used in terminal equipment, and system operations.

As explained above, according to the present invention, it is possible to notify the other party in a short time and reliably by sending a signal to the other party who has taken off the handset of the telephone and calling again using the howler sound sending means. This has the effect of improving recovery.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an alternate relay system for explaining an embodiment of the recall signal calling method of the present invention, and FIG. 2 is a flowchart showing the operation sequence of the relay system shown in FIG. 1.2...telephone, 3...exchange, 5
1... Ringing trunk (ringing tone sending means), 5
2... Set completion sound trunk (set completion sound sending means), 53... Register trunk (register), 54... Call trunk, 55...
・Meeting trunk (meeting means), 56... Howler drunk (howler sound sending means), 57...
Calling signal trunk (calling signal sending means). ((Route 1st 4,%/6 2~'
5/ρ〕
6 no r-＼ 62 7.52 7〜, 41 3 3 4 6s -2
5 da must 42 67 ss must 6 Δ/ -757

Claims (2)

[Claims] (1) In a telephone exchange, the exchange has first and second
When the first telephone is in a call state and a predetermined signal is sent from the first telephone, the first telephone is connected to the register and a dial reception ready tone is transmitted, and the first telephone is connected to the second telephone. A temporary waiting means is connected to send out a waiting tone, a call forming circuit is stored and released, and a predetermined re-call code or number is dialed from the first telephone which received the waiting completion tone to the register. When receiving, the connection is changed from the waiting means to the howler sound sending means for the second telephone, and the connection is changed for the first telephone from the register to the set completion sound sending means, and the howler sound is sent. When the second telephone connected to the means goes on-hook, the connection is changed from the set completion sound sending means to the ringing sound sending means for the first telephone, and the howler sound is sent to the second telephone. A recall signal calling method characterized by switching the connection from a sending means to a calling signal sending means. (2) When the first telephone is in an on-hook state and the second telephone connected to the howler sound transmitting means is in an on-hook state, the switching equipment transmits a ringing signal to the first telephone. connecting the second telephone and releasing the second telephone from the howler sound transmitting means to put it on hold;
When the first telephone connected to the ringing signal sending means answers, the first telephone is switched from the ringing signal sending means to the ringing tone sending means, and the second telephone is placed on hold. and connect the calling signal sending means.
Further, when a second telephone connected to the ringing signal sending means responds, the first and second telephones are released from the ringing tone sending means and the ringing signal sending means, respectively, and connected to one communication circuit. 2. A method for transmitting a recall signal according to claim 1, wherein the call path is closed by