JPS6350246A - Collect call automatizing equipment - Google Patents

Abstract

PURPOSE:To make an operator unnecessary by automatically starting a tariff meter in the receiver side by a tariff meter starting means when a prescribed signal is sent to an exchange from a telephone set in the transmission side or the reception side. CONSTITUTION:When acknowledging the request of a collect call from a transmitter, a receiver sends an acknowledgement signal (the prescribed signal instructing the switching to collect call) to the exchange by the push dial of the telephone set in the reception side. In the exchange, the acknowledgement signal is detected by an acknowledgement signal detecting circuit 18 to drive a reception-side meter staring circuit 20. Then, a preliminarily selected reception- side tariff meter is started. Simultaneously, the acknowledgement signal detecting circuit 18 sends a collect call switching signal from a collect call switching signal generating circuit 16 to the telephone set in the transmission side. The push dial signal of a push dial 11 is used as the acknowledgement signal. Since this push dial signal has the dual tone constitution, it is very accurately distinguished from voice signals to prevent the malfunction due to voice signals.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to collect call automation equipment, and in particular to a system for automating the processing necessary when making a so-called collect call between a calling side telephone and a receiving side telephone. Regarding equipment.

[Prior Art] Conventionally, the method for processing collect calls (calls paid by the recipient) is that the calling board first applies to the central office for a collect call, and in response, the operator of the switchboard makes a call to the other party's office. , I was trying to connect the W1 talk line at 19 with the consent of the other station.

FIG. 11 is a diagram for explaining the conventional collect call processing method as described above. Hereinafter, the conventional 5 rectangle processing method will be explained in more detail along the operational steps shown in FIG.

Sudep $1 = Calling means calling the telephone office and telling the operator the request for a collect call and the telephone number 1 and name of the other party. Accordingly, the operator calls the other party.

Step S2: When the other party, that is, the recipient answers the phone,
The operator informs the recipient that there is a request for a collect call and asks if he or she responds.

Step S3: When the recipient understands, the operator responds to the dial tone to indicate that the recipient has understood, and connects the telephone @ line.

Step S4: A call is made between the sender and the receiver.

Step S5: The call ends and the handset goes to 0N-800K.
When this occurs, the telephone line is disconnected.

Step S6: The second telephone office bills the recipient for the telephone charge.

Step S7: The recipient pays the telephone charge.

[Problems to be solved by the invention] As mentioned above, in the past, operators handled collect calls, so the telephone office had to keep a large number of operators on standby at all times in preparation for collect call requests. There was a problem.

This invention was made by focusing on these conventional problems, and provides automated collect call equipment that automatically processes collect calls without the need for an operator at all. [Means for solving the problem] Automation of collect calls according to the present invention m i'if
t includes a predetermined signal detecting means for detecting a predetermined signal transmitted from the originating telephone or the receiving telephone in the exchange of the central office, and a predetermined signal detecting means for activating the charge meter on the receiving party in response to the detection of the predetermined signal. A fare meter starting means is provided for the purpose of the present invention.

[Operation] In the present invention, when a predetermined signal is sent from the originating telephone or the receiving telephone to the exchange, the charge meter activation means automatically starts the charge meter on the receiver side.

[Embodiment] FIG. 2, FIG. 3, and FIG. 4 are block diagrams showing a calling side telephone, a receiver (third side telephone), and a telephone exchange at a central office, respectively, which constitute an embodiment of the present invention. As an example, a public telephone is used as the originating telephone.

The calling side telephone and the receiving side telephone are connected to an exchange via a telephone line, and the exchange performs processing for opening/closing and collecting telephone lines between the calling side and the receiving side.

Referring to FIG. 2, the calling side telephone includes a handset 1, a push button type button dial 2, and a ringing buzzer 3 for generating a ringing tone. The handset 1 and the bush dial 2 are connected to a telephone line via a switch 4. The ringing buzzer 3 is directly connected to the telephone line. Opening and closing of the switch 4 is performed by a line connection control circuit 5. This line connection control circuit 5 includes an 0FF-HOOK detection circuit 6 that detects that the handset 1 is taken off the hook, a coin detection circuit 7 that detects the insertion of a coin, and a card detection circuit that detects the insertion of a telephone card. The circuit 8 is connected. The line connection control circuit 5 also includes a signal discrimination circuit 9.
is connected. This signal discrimination circuit 9 is a circuit for discriminating the collect call disconnection number WA4n sent from the exchange via the telephone line.

Next, with reference to FIG.
, a button dial 11 , and a calling buzzer 12 . The Bushdai cell 11 is connected to a telephone line via a switch 13. This switch 13 is opened and closed in conjunction with a hook 14 on which the receiver 10 is placed. Call buzzer 1
2 is directly connected to the telephone line.

Next, referring to FIG. 4, the central office exchange includes a destination dial detection circuit 15 and a collect call switching signal generation circuit 16 connected to the telephone line connected to the originating telephone.
, the call control circuit 17 and the acknowledgment signal detection circuit 18 connected to the telephone line connected to the receiving telephone, and the line connection inserted between the telephone line of the calling telephone and the telephone line of the receiving telephone. Contains one switch. The exchange also includes a receiver-side meter activation circuit 20. The other party's Daicel detection circuit 15 is the first circuit that detects the number of the other party's dialing transmitted from the calling party's telephone, and its output is given to one line connection switch as an opening/closing control signal, and is also sent to the receiving party's side as an opening/closing control signal. It is given to the receiving right meter activation circuit 20 as a selection signal for selecting the rate meter. Further, the output of the destination dial detection circuit 15 is given to the call control circuit 17. This call control circuit 17
is a circuit for transmitting a calling signal to a receiving telephone. The acceptance signal detection circuit 18 is a circuit for detecting the acceptance signal of a collect call transmitted from the receiving telephone, and its output is sent to the collect call switching signal generation circuit 1.
6 and the receiver side meter activation circuit 20. The collect call switching signal generation circuit 16 is a circuit for transmitting a collect call switching signal to the originating +1!1 telephone in response to the output of the acknowledgment signal detection circuit 18. The receiver side meter activation circuit 20 is a circuit for activating the receiver side charge meter in response to the output of the acknowledgment signal detection circuit 18.

FIG. 1 is a flowchart illustrating the operations and processes performed on the calling side, the central office, and the receiving side when making a collect call in the above embodiment.

First, referring to FIG. 1, an outline of the operation when making a collect call in the above embodiment will be explained. Note that the following explanation will be made along the operational steps shown in FIG.

Step S11: First, the caller dials the telephone number of the other party from the calling side telephone and performs a calling operation. depending on,
The exchange transmits a ringing signal to the receiving telephone, and in response, the receiving telephone outputs a ring tone.

Step S12: When the recipient responds, the exchange connects the calling side telephone line and the receiving side telephone line.

Step S13: A call is made between the calling side and the receiving side.

Step S14: When the caller runs out of coins or cards, for example, during the call, the sender requests the receiver to make a collect call. This collect call request is
It is done orally during a phone call.

Step S15: When the receiver understands the request for a collect call from the caller, he sends an acknowledgment signal (in this embodiment, this acknowledge signal becomes a predetermined signal for instructing switching to a collect call) by dialing the button on the receiver's telephone. )
is sent to the exchange.

The central office exchange receives this acknowledgment signal and switches the rate meter to the recipient's side. This automatically switches from a normal call to a collect call.

Step $16: The call is continued with the call switched to a collect call.

STEP S1 F2: When the call ends, the receiver of the calling side telephone or the receiving side telephone is 0N-HOOK, and in response, the telephone line is disconnected at the exchange. Stop the fare meter.

Step 818: The Dentomi station informs the receiver of the step 3
Charges will be charged after switching on 15th.

Step S19: The recipient pays the charged fee.

Next, in the above embodiment, the operations carried out individually by the transmitting telephone, the receiving telephone R, and the exchange will be explained in more detail.

Operation on the calling side telephone When the caller raises the receiver e1, ○FF-1-1
The 00K detection circuit 6 outputs the OI-"I"-HOOK signal. Further, when a coin or a card is inserted, a coin detection signal or a card detection signal is outputted from the coin detection circuit 7 or the card detection circuit 8. A signal to 0FF-)-100 to the line connection control circuit 5,
When a coin or card detection signal is input, the line connection control circuit 5 closes the switch 4 and connects the telephone line to the calling telephone. Next, the caller operates Bushdaicel 2 to call the other party. When the other party answers the call, the call begins.

Here, during a call, the caller requests the receiver to make a collect call, and if the receiver agrees to this request, the switch to collect call is performed on a per-exchange basis, and the exchange sends a collect call switching signal via the telephone line. is sent (
Ru. The signal discrimination circuit 9 detects this collect call switching signal and provides the detection signal to the line connection control circuit 5. When the line connection control circuit 5 receives the detection signal from the signal discrimination circuit 9, it maintains the telephone line in a connected state regardless of the signal from the coin detection circuit 7 or the card detection circuit 8.

At this time, the line connection control circuit 5 stops the time monitoring circuit included in the coin detection circuit 7 or the time monitoring circuit included in the card detection circuit 8, and returns the remaining coins after the call ends.

Operation of the receiving telephone The ringing buzzer 1 is activated by the ringing signal sent from the exchange.
A ring tone is generated from 2. When the receiver picks up the receiver 10 and answers, the switch 13 is closed and the telephone line is connected. Thereafter, a telephone call is made between the caller and the caller. During this call, if the caller requests a collect call, the receiver operates the button dial '11.
Sends an acknowledge signal to the exchange. That is, a signal of a specific key on the bushing dial 11 or a signal of a combination of multiple types of keys is determined in advance as the understanding signal.

Operation of the exchange A dialing signal sent from a telephone on the calling side is detected by a full detection circuit 15 to the calling party, and a calling signal is sent from a calling control circuit 17 to the calling party's station number. At this time,
The partner Daicel detection circuit 15 also selects the charge meter of the partner station, which is sent to the receiving side meter activation circuit 20, based on the partner dial signal. When the call control circuit 17 detects that the other party has responded, it stops the call.

Here, when the caller requests the receiver to make a collect call, and the receiver accepts the request and the receiver's telephone sends an acknowledge signal, the acknowledge signal detection circuit 18 detects this acknowledge signal. , the receiving side meter starting circuit 20 is driven. This activates the previously selected receiving side charge meter. Along with this, the understanding signal detection circuit 1
8 is from the collect call switching signal generation circuit 16 to the transmitting side 7
A collect call switching signal is sent to the ri handset.

As described above, in the embodiments shown in FIGS. 2 to 4, the exchange automatically performs the necessary processing for collect calls in response to the acknowledgment signal sent from the receiving telephone. Processing for collect calls can be performed without any intervention. Therefore, there is no need to have a large number of operators on standby at the telephone office, and labor and personnel costs can be saved.

In addition, in the above embodiment, since it is possible to switch to a collect call while continuing the call, there is no need to apply for a collect call after hanging up the phone as in the past, reducing time loss and complicated application processing. It can be eliminated.

By the way, the frequency range that can be used on a telephone line is fixed, and it must be assumed that the voice frequency during a call covers this entire band. Therefore, it is necessary to take measures to prevent the acknowledgment signal sent from the receiving telephone to the exchange from being mistakenly detected as a voice signal. In the above example,
The button dial signal of the button dial 11 is used as the acknowledgment signal. This bush dial signal has a dual tone structure (combining two frequency components)
This makes it extremely accurate to distinguish it from audio signals. Therefore, the above embodiment has the advantage that malfunctions caused by audio signals can be prevented. When using the bush dial signal as an understanding signal, the understanding signal detection circuit 18
It is necessary to provide a dual-tone discrimination function to the terminal, but since conventional bush dial exchanges already have a built-in function to discriminate dual tones, if this function is used in the acknowledge signal detection circuit 18, the equipment This embodiment can be implemented without major changes. ,J3, If you do not want the above advantages, you can use the so-called rotary Daicel dial signal as an understanding.

When using the bush dial signal as an acknowledgment (δ, etc.) as described above, if the acknowledge signal is defined as a single digit bush dial signal, for example, the recipient's hand may be mistakenly placed in a specific position on the bush dial 11. Just by touching =
There is a risk that an undesired switch to luctocall may occur. Therefore, it is preferable that the acknowledgment Y] be a multi-digit bush dial signal. However, if the eco-left call acknowledgment signal is set as a bush dial signal of the same number for each telephone, anyone can freely switch to a collect call, and there is a risk of misuse. Therefore, a unique password may be determined for each telephone set, which serves as a collect call acceptance signal, and the call may be switched to a collect call only when this verification number is sent to the exchange. In this case, the exchange shown in FIG. 4 can be realized by adding, for example, blocks as shown by dotted lines. That is, the password storage device 2
2, a 1ζ password determined for each telephone device is registered in advance. When the acknowledgment signal detection circuit 18 detects an acknowledgment signal sent from the receiving phone, the PIN number configuration circuit 21 outputs a correspondence between the detected acknowledgment signal and the information registered in the PIN storage device 22. Detects whether the PIN number of the phone matches the PIN number of the phone. If a match is detected, a detection signal is derived from the acknowledgment signal detection circuit 18 to switch to a collect call. On the other hand, if no match is detected, a detection signal is derived from the acknowledgment signal detection circuit 18 to prohibit switching to collect call.

FIG. 5 is a schematic block diagram that does not show the configuration of the exchange in the embodiment of the present invention. Note that the configurations of the calling side telephone and the receiving side telephone in this embodiment may be similar to those shown in FIGS. 2 and 3, respectively. The configuration of the exchange of this embodiment will be explained below, and in FIG. 5, the same references as in FIG. 4 are used. The part marked f1 is the 4th part.
Since the configuration is similar to that shown in the figure, detailed description thereof will be omitted to avoid duplication.

A collect call switching signal generation circuit 16, a destination dial detection circuit 15, and a collect call request detection circuit 23 are connected to the telephone line of the calling side telephone. On the other hand, the telephone line of the receiving side telephone includes a call control OP circuit 17, a response detection circuit 24, and a collect call request guidance sending circuit 25.
and the acknowledgment signal detection circuit 18 are connected. The collect call request detection circuit 23 is a circuit for detecting that a bush dial signal for a collect call request has been sent from the calling side telephone, and its output is sent to the receiver side meter activation circuit 20 and the collect call request guidance sending circuit. is applied to circuit 25. A guide channel 126 is connected to the collect call request guide sending circuit 25 . This guidance tape 26 has prerecorded audio information for informing the recipient that a collect call is requested. The collect call request guidance sending circuit 25 is the Iζth circuit that sends the audio information on the guidance tape 26 to the receiving telephone. The output of the acknowledgment signal detection circuit 18 is sent to the collect call request guide sending circuit 25. Collect call switching signal generation circuit 16. The signal is applied to the meter activation circuit 20 and the line connection circuit 27 on the recipient side.

The line connection circuit 27 controls opening and closing of the line connection switch 19 in response to the detection signal from the acknowledgment signal detection circuit 18.

FIG. 6 is a diagram showing the full configuration of the caller when making a collect call request from the calling party's telephone in the embodiment shown in FIG. and a predetermined collect call request number from the bush dial 2 (see FIG. 2).

FIG. 7 is a flowchart illustrating the operations and processes carried out by the calling side, the central office, and the receiving side when making a collect call in the embodiment based on FIG. 5. Hereinafter, with reference to FIG. 7, the general operation of this embodiment will be explained along the operational steps shown in FIG.

Step S21: The subscriber first dials the destination telephone number i, and then dials a predetermined collect call request number i. Based on receiving the collect call request number, the exchange recognizes that there is a collect call request.

Step S22: The exchange dials the telephone number of the other party and calls the other party.

Step S23: When the recipient answers the call, a response signal is sent from the recipient telephone to the exchange, so the exchange knows that the recipient has answered.

Step S24: In response to the recipient's response, the exchange notifies the recipient of the collect call request. Specifically, the audio information recorded on the guide channel 726 is sent to the receiving telephone.

Step S25: If the receiver understands the collect call request, an acceptance signal is sent from the receiving mwI telephone to the exchange. By receiving this acknowledgment signal (an example of a predetermined signal), the exchange knows that the receiver has acknowledged the collect call request.

Step $26: When the receiver accepts the collect call, the exchange activates the receiver's charge meter and connects the telephone line.

Step S27: With the telephone line connected,
A call is made.

When the second call ends in step 828, the telephone receiver is turned ON -1-100K on the calling or receiving side, and the exchange detects this and disconnects the telephone line.

Step 829: The telephone office bills the recipient for the fee.1. The recipient confirms this.

Step 830: The recipient pays the billed fee to the telephone office.

Next, a more specific operation of the exchange shown in FIG. 5 will be explained. The sending side? When the telephone number of the other party is sent from the telephone a, the other party's dial detection circuit 15 detects this and activates the "calling control circuit 17." In response, the call control circuit 17 sends a ringing signal to the receiving telephone via the telephone line, and causes the ringing buzzer 12 (see FIG. 3) of the receiving telephone to emit a ringing tone.

At this time, as shown in FIG. 6, a collect call request number is sent from the originating telephone along with the other party's telephone number 718 (then, the collect call request detection circuit 23 detects it, and the receiving party's meter activation circuit 20 The receiving side charge meter is selected in advance, and the collect call request guidance sending circuit 25 is placed in a standby state.When the receiver answers in response to the calling signal from the calling control circuit 17, the response detection circuit 24 is detected, and activates the collect call request guidance sending circuit 25. In response, the collect call request guidance output path 25 sends the voice information of the collect call request guidance recorded in the guide channel 726 to the receiving ffI!l telephone through the telephone line. Therefore, the receiver knows through the receiver that there is a request for a collect call. When the receiver understands the request for a collect call, he operates the bush dial 11 to send out an acceptance signal, as in the previous embodiment. When this acknowledge signal is detected by the acknowledge signal detection circuit 18, the receiver side meter activation circuit 20 is activated, and the collect call switching signal generation circuit 16 is activated.

The preselected receiver side charge meter is activated, and a collect call switching signal is generated from the collect call switching signal generation circuit 16 and sent to the calling side telephone. In addition, in response to the detection signal of the acceptance signal detection circuit 18, the sending operation of the collect call request guidance sending circuit 25 is stopped, and one line connection switch is closed by the line connection port 't827, and the caller's telephone line is closed. and the telephone line of the receiving side are connected. This enables a telephone conversation between the calling side telephone and the receiving side telephone.

In the embodiment shown in FIG. 5, the guide 726 is used to notify the recipient of the request for a collect call.
If the receiving telephone has a display function, display information may be sent to the receiving telephone without indicating that there is a collect call request.

By the way, are all the examples explained so far on the receiving side?
The system waits for a collect call acknowledgment signal from the caller to control the collect call switching, but for example, when calling someone's home or their company, the collect call is switched off without first obtaining the recipient's consent. In some cases, it may be acceptable to switch to a collect call.In this case, the calling party's telephone should give a command to switch to a collect call from the telephone at the central office. If the call is switched to a collect call even though the receiver does not wish to do so, there is a risk that the call will be switched to a collect call, which may cause great harm to the person in charge of receiving the call.Therefore, this point has been improved and the Ic embodiment is shown in Figures 8 and 8. It is shown in Figure 9.

FIG. 8 is a diagram showing a system configuration of still another embodiment of the present invention. As shown in the figure, a calling party's telephone office and a receiving party's telephone office are interposed between the calling party's telephone and the receiving party's telephone, and a password storage device 30 is connected to the exchange of the receiving party's telephone office. be done. In this password storage device 30, unique passwords are registered in advance for each telephone number of each telephone number. In this embodiment, when a collect call is made from the calling phone to the receiving phone, the collect call switching control is performed only when the calling phone sends out a PIN set for the receiving phone. There is.

FIG. 9 is a schematic block diagram showing an exchange installed in the receiving telephone office shown in FIG. 8. In addition, Figures 4 and 5
The same reference numerals are given to the same parts as in the exchange shown in the figure, and the explanation thereof will be omitted as appropriate.

A collect call switching circuit generation circuit 16, a partner Daicel detection circuit 15, a collect call request detection circuit 23, and an l18 identification number detection circuit 28 are connected to the telephone line connected to the calling side telephone via the calling side telephone office. Ru. On the other hand, a call control circuit 17 and a response detection circuit 24 are connected to the telephone line connected to the receiving telephone. The output of the partner Daicel detection circuit 15 is given to the call control circuit 17, and is also sent to the PIN storage device 30 as a selection signal for selecting the corresponding number from among the registered PIN numbers.
given to. The readout output of the password storage device 30 is applied to one input of the password matching detection circuit 29. The output of the password detection circuit 28 is applied to the other input of the password-number composition circuit 29. The password detection circuit 28 is
This is a circuit for detecting the PIN number sent from the calling party's telephone via the telephone line. The matching outputs of the two PIN-number construction circuits are given to the meter activation circuit 20 on the recipient side. The receiver side meter activation circuit 20 is also supplied with the outputs of a collect call request detection circuit 23 and a response detection circuit 24. The receiver side meter activation circuit 20 is connected to the collect call switching signal generation circuit 16.

In this embodiment, the configurations of the calling side telephone and the receiving side telephone may be similar to those shown in FIGS. 2 and 3, respectively.

Next, the operation of the embodiment shown in FIGS. 8 and 9 will be explained. First, if the caller wants to make a collect call,
As shown in FIG. 10, the telephone number of the other party, the collect call request number, and the password are sent to the switchboard by operating the full 2 switch shown in FIG. 2. Here, as in the case shown in FIG. 6, the collect call request scent is a common number used only when the recipient side pays the fee.

Further, the password is a password that has been agreed upon in advance between the recipient and the telephone office, and is registered in advance in the password storage device 30 for each telephone number. In this actual 7fM example, the collect call request number and the password serve as a predetermined signal for instructing switching to a collect call. By dialing the telephone number of the other party, a telephone line is connected to the telephone station to which the recipient subscribes, and the other party's dial detection circuit 15
The dialing signal of the other party's telephone number is detected.

Accordingly, the other party's Daicel detection circuit 15 detects the call control circuit 1.
7 to send a calling signal to the receiving telephone, and at the same time reading out the PIN corresponding to the receiving telephone from the l'Ia identification number storage device 30,
I will give it to you. Further, the other party dial detection circuit 15 closes one line connection switch to enable communication between the calling side and the receiving side 43<. Next, when the collect call request detection circuit 23 detects the collect call request number, the receiver side meter activation circuit 20 is placed in a standby state.

Subsequently, when the password detection circuit 28 detects the password, the detected /C password is provided to the password 7+E number matching detection circuit 29. The password-number configuration circuit 29 determines whether or not the password number read out from the password storage device 30 and the password detected by the password P11 detection circuit 28 match, and detects a match. If so, a match signal is received (g is given to the meter activation circuit 20 on each side. As a result, the meter activation circuit 20 on the reception surface side becomes activated. Here, the recipient responds to the call, and the recipient When the response double amount is sent from the side telephone, the response detection circuit 24 detects this.Responsely, the response detection circuit 24 activates the receiver side meter activation circuit 20.As a result, the recipient side charge meter is activated. In response to this activation, the receiver side meter activation circuit 2
0 activates the collect call switching signal generation circuit 16 and causes the collect call switching signal to be sent to the calling side telephone. Note that the coins used at startup on the caller's phone can be returned after the call ends, and it is also possible to switch to a collect call when the time equivalent to the first coin has elapsed.

On the other hand, if the identification number-number output circuit 29 does not detect a match between the identification numbers, the meter activation circuit 20 on each receiving side
There is a matching signal! Therefore, the receiver side meter activation circuit 20 does not activate even if the activation signal is given from the response detection circuit 24. Therefore, in this case, the call is not switched to a collect call, and a normal call is made where the caller pays. Therefore, the telephone line is disconnected when the time remaining on the telephone card elapses, which is the time bt for the coin inserted at the calling party's telephone.

As described above, according to the embodiments shown in FIGS. 8 and 9, it is possible to automatically switch to a collect call without obtaining consent from the receiver. Compared to the embodiment shown in the figure, switching control to collect calls can be performed more quickly and smoothly. Furthermore, since the switch to a collect call is made by determining whether the password numbers set for the receiving telephone set match, it is possible to prevent the collect call from being used by another person without permission.

[Effects of the Invention] As described above, according to the present invention, it is possible to automate the control of switching between collect calls and calls in an exchange, and there is no need to keep a large number of operators at the telephone office. Therefore, it is possible to significantly reduce the labor and personnel costs required for processing collect calls.

4. Drawing (7) General Explanation FIG. 1 is a flowchart for explaining the operations and processes performed on the calling side, the central office, and the receiving side when making a collect call in one embodiment of the present invention.

FIGS. 2, 3, and 4 are schematic block diagrams showing the configurations of a transmitting side telephone, a receiving side telephone J3, and a central office exchange, respectively, which constitute one embodiment of the present invention.

FIG. 5 shows the configuration of the exchange used in the embodiment of this invention II! 1 is a schematic block diagram.

FIG. 6 is shown in FIG. 5.
FIG. 3 is a diagram illustrating a dial configuration transmitted from a calling side telephone when calling.

FIG. 7 is a diagram (J-CH1') for explaining the operations and processes performed on the calling side, the central office, and the receiving side when making a collect call in the embodiment shown in FIG.
- It is.

FIG. 8 11 is a diagram showing the configuration of system 1 in still another embodiment of the present invention.

FIG. 9 is a schematic block diagram showing the configuration of the exchange of the receiving telephone office shown in FIG. 8.

FIG. 10 is a diagram showing the dial configuration transmitted from the optical telephone when making a collect call in the embodiment shown in FIGS. 8 and 9. FIG.

FIG. 11 is a flowchart showing a conventional collect call processing method.

In the figure, 1 and 10 are handsets, 2 and 11 are button dials, 5 is a line connection control circuit, and 6 is an OFF
-HOOK detection circuit, 7 is a coin detection circuit, 8 is a card detection circuit, 9 is a 1g discrimination circuit, 15 is a partner Daicel detection circuit, 16 is a collect call switching signal generation circuit, 1
7 is a calling system 0 circuit, 18 is an acknowledgment signal detection circuit, 1-pin line connection switch, 20 is a receiver side meter activation circuit, 2
1 is IIa identification number - number configuration circuit, 22 is PIN number + A
23 is a collect call request detection circuit, 24 is a response detection circuit, 25 is a collect call request information sending circuit, 2
6 is a guide tape, 27 is a line connection circuit, 28 is a password detection circuit, 29 is a password matching detection circuit, and 30 is a password storage device.

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Claims (2)

[Claims] (1) Equipment for automating the processing required for collect calls when a call is made between a calling side telephone and a receiving side telephone via a telephone exchange at a central office, wherein the exchange is connected to the calling side telephone or a predetermined signal detection means for detecting that a predetermined signal serving as a collect call switching command has been transmitted from the receiver telephone; and a charge meter activation means for activating a charge meter of the collect call automation equipment. (2) The collect call automation equipment according to claim 1, wherein the predetermined signal is a specific dial signal.