JPH09219887A - Method for taking out mail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a futile telephone call fee in the case where the owner of the slave machine of a PHS(personal handyphone system) calls a mail host, and takes out mail addressed to himself. SOLUTION: A switching network 3, a base station 2 connected to the switching network, a slave machine 1 and the mail host 4 which is connected to the switching network and registers the mail addressed to the slave machine 1 together with its telephone number are provided, and when the mail host 4 receives a caller number sent from an exchange on the basis of the call origination of the slave machine 1, in the case where the mail is registered correspondently to the caller number, it responds to call incoming, and transmits the corresponding mail to the slave machine 1. Besides, in the case where no mail is registered, since it does not respond to the call incoming while incoming ringing continues prescribed number times, the owner of the slave machine 1 judges that the mail addressed to himself is not yet registered for this period, and abandons the call origination, and therefore, such a trouble that the fee is charged though the mail could not be taken out can be canceled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mail extracting method for extracting and delivering a mail addressed to a PHS telephone used in a PHS (Personal Handyphone System).

[0002]

2. Description of the Related Art In recent years, PHS systems, which have started to be used, are rapidly becoming widespread because PHS telephones (hereinafter referred to as PHS handset) can be carried by a holder and freely talk through a nearest base station. is there. Such PHS cordless handset
When making a call, the owner can freely call the other party by making a call operation in the vicinity of the base station. However, when a call is made to the owner of such a PHS cordless handset,
If the owner of this PHS handset, which is the called party, is moving on a train, for example, or is in an area where the radio waves of the base station do not reach, the call cannot be received. In the PHS system, such a call-disabled state often occurs. There is a problem. For this reason, a system has been proposed in which a mail host is provided, mail (message) addressed to the called party is stored in advance, and the called party calls the mail host to retrieve the message.

[0003]

By the way, when the called party makes a call to the mail host to retrieve the mail addressed to the called party, the mail host side automatically answers the call and the called party is called. The mail addressed to the caller and delivers it to the called party. However, even if there is no mail addressed to the called party, the mail host side automatically responds to the call, so there is a problem that the called party costs a useless call (for example, 20 yen). Therefore, it is an object of the present invention to suppress unnecessary call charges when the owner of a PHS cordless handset calls a mail host to retrieve mail addressed to itself.

[0004]

In order to solve the above problems, the present invention provides a switching network, a base station connected to the switching network, a wireless terminal for performing wireless communication with the base station, and a switching network. In a system comprising a mail host which is connected and registers mail addressed to the wireless terminal together with the telephone number of the wireless terminal, the mail host receives the caller telephone number transmitted from the exchange network based on the transmission of the wireless terminal. When a mail is registered corresponding to the received caller telephone number, the method is such that the mail is read out and transmitted to the calling side in response to the incoming call based on the call from the wireless terminal. As a result, if there is an incoming call from the wireless terminal, it will respond to the incoming mail only if the mail addressed to that wireless terminal is registered, so when the owner of the wireless terminal calls the mail host and retrieves the mail addressed to itself. It is possible to reduce unnecessary call charges. Further, the mail host is a method of not answering an incoming call while the incoming call ringing based on the incoming call continues for a predetermined number of times when the mail is not registered corresponding to the received caller telephone number. . As a result,
Since the prompt response of incoming mail on the mail host side is avoided, the owner of the wireless terminal judges that the mail addressed to himself is not yet registered during the continuation of this incoming call, and abandons the call,
It is possible to solve the problem that an email addressed to itself is charged even though it is not registered.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a system to which the mail extracting method of the present invention is applied. In the figure, 1 is a PHS handset (wireless terminal), 2 is a base station,
Reference numeral 3 is a switching network, 4 is a mail host for storing mail addressed to a called party who has the PHS slave device 1, and 5 is a telephone device such as a button telephone device installed in an office. By the way, the owner of the PHS cordless handset 1 is not always within the range covered by the radio waves of the base station, and is often in the area where the radio waves of the base station are out of reach when moving by train or car. for that reason,
From the telephone device 5 in the office via the exchange network 3 and the base station 2, for example, a PH carried by a sales person who is out of the office.
Even if a call is made to the S cordless handset 1, there is a high probability that the call cannot be made.

In view of the above, in the present system, the mail host 4 is connected to the exchange network 3, and the mail addressed to the PHS slave device 1 is registered in the mail host 4 from the telephone device 4 in advance. The mail host 4 is called via the base station 2 and the exchange network 3 so that the mail addressed to itself can be retrieved.

FIG. 4 is a block diagram of the PHS handset 1 which constitutes the above system. The PHS handset 1 includes a radio transmitter / receiver 11, a modem modulator 12, and a channel codec 1.
3, 15, voice codec 14, modem modulator 16,
It is composed of a CPU 17, a keyboard 18, a display 19 and the like.
FIG. 5 is a block diagram showing the configuration of the base station 2 that transmits a radio signal to and from the PHS handset 1.
Is composed of a radio transmitter / receiver 21, a modem modulator 22, channel codecs 23 and 25, a voice codec 24, a modem modulator 26, a CPU 27, a two-wire to four-wire converter 28, and a line interface 29. The base station 2 is connected to the switching network 3 via the line interface 29 and the line L.

Next, FIG. 2 is a block diagram of the mail host 4 constituting the above system. The mail host 4 is a line interface 41 which is an interface of a line group Ln including a plurality of lines, and data for sending and receiving mail. It comprises a transmission / reception unit 42, a memory 43 for registering mails, and a control unit 44 for controlling these.

In the system configured as described above, as described above, the PHS carried by the salesperson who is out
In order to register the mail to the child device 1, the telephone device 5 in the office calls the switching network 3 to the mail host 4.
In the control unit 44 of the mail host 4, the call from the switching network 3 based on the call made by the telephone device 5 is called by the line interface 41.
, The telephone number of the PHS cordless handset 1 and the mail addressed to the cordless handset 1 sent from the telephone device 5 are received by the data transmitting / receiving unit 42 and stored in the memory 43. Let

After that, when a call is made from the PHS handset 1 to the base station 2 addressed to the mail host 4, this call is transmitted to the switching network 3 via the base station 2 and mail is sent from the switching network 3. A call is made to host 4. When the mail host 4 responds to this call, the PHS stored in the memory 43
Read the mail of the handset 1 to access the line interface 41,
It is transmitted to the PHS handset 1 via the switching network 3 and the base station 2. In the PHS cordless handset 1, when this mail is a voice signal, it is emitted from the speaker SP as it is. If the mail is display data, it is displayed on the display unit 19. In this way, it is possible to transmit the message to the sales person who owns the PHS slave device 1.

Even if the PHS handset 1 makes a call to the mail host 4 when the mail is not yet registered in the mail host 4, the mail host 4 immediately responds to the call and sends the mail. Since a message indicating that is not registered is transmitted, there is a problem that the PHS handset 1 is charged even though the mail cannot be acquired. Therefore, according to the present invention, the PHS slave device 1 side has the mail host 4
When the mail is called, the mail host 4 receives the caller's telephone number and does not respond to the call if no mail corresponding to the telephone number is registered.

By the way, as is well known, the ISDN line has a function of notifying the called party of the caller's telephone number. In addition, even for an analog line, such a caller telephone number notification service is being started. The present invention
Focusing on such a caller telephone number notification service, the caller telephone number is received in advance when an incoming call arrives, and only when the mail corresponding to the received caller telephone number is registered in the memory 43, the call is received. Configure to respond and deliver mail to sender.

The notification function of the sender's telephone number on the analog line will be described below with reference to the block diagram of FIG. 3 showing the main configuration of the mail host 4. When the first incoming call from the switching network 3 arrives at the lines L1 and L2 by the call to the mail host 4 of the PHS slave device 1, the control unit 44 causes the diode bridge DB2 and the incoming call detection circuit 45 in the line interface 41 to pass through. Recognize the arrival of incoming calls. In this case, the control unit 44 drives the line capturing circuit 46 in the line interface 41 to close the DC loop of the lines L1 and L2, and responds to this first incoming call (primary response).

Then, the switching network 3 transmits the caller telephone number, which is the telephone number of the PHS handset 1, by a modem signal. When the control unit 44 receives this modem signal via the transformer T in the line interface 41 and the modem 47, it drives the line capturing circuit 46 to open the DC loop of the closed line. When the DC loop is opened, the second incoming call (call signal) arrives from the switching network. In this case, if the received caller telephone number is registered in the memory 43, the control unit 44 drives the line capturing circuit 46 to respond (secondary response) to the second incoming call. Then, the data transmitter / receiver 42 is controlled to read the mail registered corresponding to the telephone number from the memory 43, and the line is acquired from the direction indicated by the dotted line in the drawing via the line capturing circuit 46 and the diode bridge DB1. It is sent to the L1 and L2 sides.

FIG. 6 is a flow chart showing the operation of the mail host 4 based on such an analog line caller telephone number notification service. This flowchart and FIG.
The main operation of the present invention will be described in more detail with reference to the block diagram of FIG. When an incoming signal arrives at the lines L1 and L2 as a result of making a call from the PHS slave device 1 to the mail host 4, the control unit 44 recognizes the arrival of an incoming call through the incoming call detection circuit 45 as described above, and The capture circuit 46 is driven to close the DC loop of the lines L1 and L2. The caller telephone number is transmitted from the switching network 3 due to the line closure, but at this time, the control unit 44 receives this caller telephone number via the capacitor C2, the transformer T and the modem 47 in step S1.

Thereafter, the control unit 44 causes the line capturing circuit 46 to
Is driven to open the DC loop of the lines L1 and L2. When the loop opening of the lines L1 and L2 is transmitted to the switching network 3, a second incoming signal (call signal) arrives from the switching network 3 to the lines L1 and L2. In this case, the control unit 44
Is the memory 4 for the mail corresponding to the received caller telephone number
It is judged in step S2 whether or not it is registered within 3,
If the corresponding mail is registered, the call is answered by driving the line capturing circuit 46 to close the loop of the lines L1 and L2 in step S3.

Subsequently, the control unit 44 controls the data transmission / reception unit 42 to store the corresponding mail in the memory 43 in step S4.
Is read from and transmitted to the caller side (that is, the PHS handset 1 side). Then, after the transmission of the corresponding mail, the lines L1 and L
Open the DC loop of 2. Further, when the mail corresponding to the received caller telephone number is not registered in the memory 43, the control unit 44 monitors the output of the incoming call detection circuit 45 and waits for the incoming call ringing at a predetermined value (5 times). Does not respond to this call (step S5). In addition, this ringing value 5
The number of times can be variably set depending on the situation, such as 7 times or 10 times.

Therefore, even if an incoming call arrives, if the mail to be transmitted to the calling side is not registered, the incoming call is not answered immediately. Therefore, during this call, the owner of the PHS handset 1 sends the mail addressed to itself. It is possible to abandon the call when it has not been registered in the mail host 4 yet, and it is possible to solve the problem of being charged even though the mail cannot be acquired. In this embodiment, the example applied to the analog line has been described. However, in the case of the ISDN line, the caller telephone number is notified at the same time as the call control message. Therefore, by receiving this caller telephone number, It can be processed like an analog line.

[0019]

As described above, according to the present invention, a switching network, a base station connected to the switching network, a wireless terminal for performing wireless communication with the base station, and a wireless terminal connected to the switching network and addressed to the wireless terminal. In a system comprising a mail host for registering the mail of the above together with the telephone number of the wireless terminal, the mail host receives the caller telephone number transmitted from the switching network based on the transmission of the wireless terminal, and receives the caller telephone number. When the mail corresponding to the number is registered, the incoming mail based on the call from the wireless terminal is answered and the corresponding mail is read and transmitted to the sending side. Since the incoming call is answered only when the mail addressed to the terminal is registered, it is possible to reduce unnecessary call charges when the owner of the wireless terminal calls the mail host and retrieves the mail addressed to himself / herself. Possible to become. In addition, if the mail host does not register the mail corresponding to the received caller telephone number, it will not respond to the incoming call while the ringing based on the above incoming call continues for a predetermined number of times. The prompt response to the incoming call on the host side is avoided, and the owner of the wireless terminal judges that the email addressed to him / herself has not been registered yet and abandons the call while continuing the incoming call. It is possible to solve the problem that is charged even though is not registered.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a system to which a mail extracting method of the present invention is applied.

FIG. 2 is a block diagram of a mail host that constitutes the system.

FIG. 3 is a block diagram showing a main configuration of a mail host.

FIG. 4 is a block diagram of a PHS slave device.

FIG. 5 is a block diagram of a base station.

FIG. 6 is a flowchart showing the operation of the mail host.

[Explanation of symbols]

1 ... PHS handset, 2 ... base station, 3 ... switching network, 4 ... mail host, 5 ... telephone device, 41 ... line interface, 4
2 ... data transmitting / receiving unit, 43 ... memory, 44 ... control unit, 4
5 ... Incoming call detection circuit, 46 ... Line capturing circuit, 47 ... Modem.

Claims (2)

[Claims] 1. A switching network, a base station connected to the switching network, a wireless terminal for performing wireless communication with the base station, a mail connected to the switching network and addressed to the wireless terminal, and a telephone number of the wireless terminal. In the system consisting of a mail host to be registered with the mail host, the mail host receives a caller telephone number, which is a telephone number of a calling side, transmitted from the exchange network based on a call from a wireless terminal, and the received caller When a mail is registered corresponding to a telephone number, the mail retrieval method is characterized by responding to an incoming call based on the origination of this wireless terminal and reading the corresponding mail and transmitting it to the originating side. 2. The mail host according to claim 1, wherein the mail host does not receive an incoming call while the incoming call ringing based on the incoming call continues for a predetermined number of times when no mail is registered corresponding to the received caller telephone number. A mail retrieval method characterized by not responding.