JP2004282601A - Router - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a router constituted so as to be able to surely respond to call back from an emergency reception equipment etc. with the optimum terminal. <P>SOLUTION: A port number of a telephone set which called the emergency reception equipment first is stored and the call back from the emergency reception equipment is terminated to the terminal of this port. In addition, a port number to be terminated to the call back from the emergency reception equipment is stored as an emergency call termination port number and when there is the call back from the emergency reception equipment, this call termination is terminated to the terminal of the emergency call termination port number irrespective of a call termination telephone number of the call back. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a router having a plurality of analog ports.
[0002]
[Prior art]
In an ISDN communication service provided by a telephone communication company such as NTT (trademark), for example, an i-number contract (for example, a non-patented contract) in which a plurality of telephone numbers can be used on one subscriber line. There are contract forms such as Reference 1) and dial-in contracts (for example, Non-Patent Document 2) in which a plurality of telephone numbers can be used in one interface group. In such a contract form, when different numbers are respectively assigned to a plurality of terminal devices using an ISDN router, different telephone numbers are respectively assigned to a plurality of analog ports to which the terminal devices are connected, and incoming calls are received. Only a predetermined analog port can be called in accordance with the telephone number.
[0003]
Examples of the plurality of terminal devices connected to the analog port of the router include a telephone for making a voice call, a facsimile device, a modem, and the like.The facsimile device is set to automatically answer, and the Depending on the settings, there may be an automatic response.
[0004]
[Non-patent document 1]
“NTT East: i-Number”, [online], 1999, East Nippon Telegraph and Telephone Company, [searched on January 27, 2003], Internet <URL: http: // www. ntt-east. co. jp / shop / annai / in / in-k. html>
[0005]
[Non-patent document 2]
“NTT East ISDN OFFICIAL PAGE: Additional Service / Direct Incoming Call / INS Dial-in”, [online], 1999, East Nippon Telegraph and Telephone Company, [Search January 27, 2003], Internet <URL: http: // www. . ntt-east. co. jp / ISDN / 64 / optional / dialin / service1. html>
[0006]
[Problems to be solved by the invention]
In the above contract form, the terminal device (analog port) to be called when receiving an incoming call can be sorted by telephone number, but if a call is made from here, the line number of the subscriber will be May be set or contracted to be displayed in. In this case, even if the other party calls back to this incoming call, the call is received by the subscriber line number at the router, and therefore the call may not always be received by the terminal device that made the call earlier. In this case, there is a case where an incoming call arrives at all terminal devices connected to the router, and a case where no incoming call arrives at any terminal device.
[0007]
When an incoming call arrives at all terminal devices as in an i-number contract, if a device that automatically responds to the incoming call, such as the facsimile machine or modem, is connected, the user will be able to make a telephone call. There is a problem in that a call is automatically answered before a response and the user cannot make a call.
[0008]
Also, in dial-in contracts, if the number to be notified to the other party as the caller number (subscriber line number) and the number to be accepted when receiving an incoming call (dial-in number) are used separately, callback for the notification number There is a possibility that a call may not be received at your own device but another terminal device, or if there is no terminal device with a dial-in number of the notification number, all terminal devices will not accept incoming calls In this case, there is a problem that no one can respond.
[0009]
The above problem was a serious problem particularly at the time of callback from an emergency reception desk (110: police, 119: fire and rescue, 118: sea disaster).
[0010]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a router that can reliably respond to a callback from an emergency reception desk or the like with an optimal terminal device.
[0011]
SUMMARY OF THE INVENTION The present invention relates to a router having a plurality of analog ports for connecting terminal equipment, and a call request is issued from any one of the analog ports to a predetermined destination. A storage means for storing the port number, and a control means for selecting an analog port of the stored port number when there is a callback from the predetermined destination, and calling only the analog port. It is characterized by having.
The present invention is characterized in that, in the above invention, the predetermined destination is an emergency reception desk.
[0012]
In the above invention, the port number of the analog port of the transmission source is stored, and when there is a callback from the other party, only the analog port is called. As a result, even if a terminal device that automatically answers, such as a facsimile machine or an automatic answering modem, is connected to a plurality of analog ports in addition to a telephone, the terminal device that automatically answers the incoming call will answer first. Therefore, it is possible to make the caller terminal equipment receive and answer the callback reliably.
In particular, since a callback from an emergency reception desk is often an urgent business, serious consequences can occur if the call is not properly received at the source. For this reason, the other call may be left to the caller (the person who called back) without controlling the callee of the callback, but the outgoing call to the emergency reception desk and the callback may be left to the caller. Manage the source port number so that callbacks can arrive on that port.
[0013]
The present invention is a router having a plurality of analog ports for connecting a terminal device, and stores a port number of an emergency incoming port to which a callback from an emergency reception desk should be received among the plurality of analog ports. The storage means and, when a call is made from the emergency reception desk after calling the emergency reception desk, the emergency reception port is selected regardless of the incoming telephone number or port designation information at that time, and the emergency reception port is selected. And control means for making a call only to the user.
[0014]
As described above, since the callback from the emergency reception desk is often an urgent business, serious consequences may occur if the call is not properly received at the caller. For this reason, according to the present invention, an analog port connected to a terminal device capable of reliably responding to a callback from the emergency reception desk is stored as an emergency reception port, and when there is a callback from the emergency reception desk, Will only call this emergency incoming port only. That is, in the case of a dial-in contract, the incoming telephone number is specified when receiving an incoming call, and in the case of an i-number contract, the port number is specified when receiving an incoming call. Was called. Thus, regardless of which terminal device sends a call to the emergency reception desk and what number is notified to the emergency reception desk, the callback corresponding thereto is made to (the terminal device of) the emergency reception port that can reliably respond. Will be.
[0015]
The present invention relates to a router having a plurality of analog ports for connecting terminal devices, wherein a terminal device type storage means for storing a type of the terminal device connected to each analog port, and an incoming call from a line. Control means for selecting an analog port to which a terminal device of a type capable of responding to the incoming call is connected from the terminal device type storage unit, and calling the selected analog port. It is characterized by having.
5. The router according to claim 4, wherein the incoming call from the line is an incoming call from an emergency reception desk.
[0016]
An incoming call for a voice call can only be answered by a telephone. Also, an incoming call for facsimile transmission cannot be answered unless the facsimile device is used. An incoming call for data communication can only be answered by a modem. As described above, the terminal device that can respond depends on the content of the incoming call. Therefore, according to the present invention, the type of the terminal device connected to each analog port is stored in the terminal device type storage means, and when there is an incoming call from the line, this incoming call is an incoming call for any communication. Judgment is made, and an analog port to which the terminal device is connected is selected. Thus, even if the incoming telephone number is a subscriber line number, for example, only the optimum analog port can be called without calling all analog ports.
[0017]
Note that the determination of what kind of communication the incoming call can be made can be made based on, for example, the caller telephone number. That is, a telephone number and its device type are stored in a table in association with each other, and when there is an incoming call, the table is searched by the telephone number to determine the type of the terminal device that made the call, and the same device as this terminal device is selected. And make a call. In addition, the incoming call from the emergency reception desk is intended for voice communication, and its caller number is clear, such as 110, 119, 118. Then, an analog port to which a telephone for voice communication is connected is selected as the terminal device type.
[0018]
The present invention is a router provided with a plurality of analog ports for connecting terminal devices, and a different telephone number is assigned to each port, and a telephone number to be notified when making a call to the emergency reception desk is notified in an emergency. Storage means for storing the number as a number, and control means for notifying the emergency notification number when calling the emergency reception desk.
[0019]
In the present invention, a telephone number to be notified by the caller number notification function when making a call to the emergency reception desk is registered as an emergency notification number. This emergency notification number is the number of a terminal device (analog port) that can reliably respond even when a callback is received from the emergency reception desk. As a result, even if a terminal device (telephone) connected to any analog port makes a call to the emergency reception desk, the emergency notification number is displayed on the other party (emergency reception desk) and if there is a callback However, an incoming call can be made to a terminal device (telephone) that can reliably respond.
[0020]
According to the present invention, when the control means stores the priority order of the plurality of analog ports and performs a call process on the analog port selected at the time of the incoming call, a terminal device connected to the analog port cannot call, or In the case where there is no response to a call for a predetermined time, means for selecting an analog port having the next priority and performing a call process for this analog port is included.
[0021]
The present invention is characterized in that, when the control means performs a call process on an analog port selected at the time of an incoming call, if a terminal device connected to the analog port cannot call, or if there is no response to the call for a predetermined time, , And a means for performing a calling process for all other analog ports.
[0022]
According to the present invention, when the terminal device connected to the selected analog port cannot respond, or when the terminal device does not respond to the call for more than a predetermined time, the calling process is performed to another analog port. As a result, a response from any of the terminal devices can be expected even when the terminal device with the highest priority does not respond, and a suboptimal response can be expected even when the best response is not possible.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
A router according to an embodiment of the present invention will be described with reference to the drawings. This router has a function to select the analog port of the destination so that an appropriate terminal device can respond to incoming calls from emergency reception desks such as 110 (police), 119 (emergency / firefighting), and 118 (marine disaster). Have.
[0024]
FIG. 1 is a schematic block diagram of the router. The controller 10 for controlling the operation of the entire router 1 is constituted by a microcomputer, and includes a memory 10a for storing various data of incoming and outgoing calls. The analog port controller 11 and the communication controller 15 are connected to this controller. A plurality of analog ports 12, 13, and 14 are connected to the analog port control unit 11, and different terminal devices are connected to the analog ports 12, 13, and 14, respectively. In the figure, the telephone 2 is connected to the analog port 12 (port number 1), the facsimile device 3 is connected to the analog port 13 (port number 2), and the modem 4 is connected to the analog port 14 (port number 3). It is connected. Note that the same telephone number is assigned to each analog port in a normal ISDN contract, but a different telephone number can be assigned to each analog port by making a dial-in contract or an i-number (trademark) contract. The present invention can be applied to any of the cases.
[0025]
The communication control unit 15 controls connection / disconnection of the line to / from the ISDN line network 5, and sends a digitized signal input from the analog port control unit 11 to the ISDN line network 5 and a signal received from the line. Is input to the analog port control unit 11. The control message input from the ISDN line (D channel) is input to the controller 10, and the control message input from the controller 10 is transmitted to the ISDN line network 5.
[0026]
The analog port control unit 11 incorporates an A / D converter and a D / A converter, converts an analog signal input from the analog ports 12, 13, and 14 into digital data and inputs the digital data to the communication control unit 15, A ringing signal is output to one of the analog ports in response to an instruction from the controller 10, and when the analog port responds, the digital signal input from the communication control unit 15 is converted into an analog signal (audio signal). Convert and input to the analog port.
[0027]
When a call request is issued from any of the analog ports, the analog port control unit 11 notifies the controller 10 that the call request has been issued and the port number. The controller 10 outputs a control message to the communication control unit 15 in response to the call request and sends the control message to the ISDN network 5.
[0028]
Hereinafter, a call control operation with the emergency reception desk executed by the router having the above hardware configuration will be described.
[0029]
<First embodiment>
2 and 3 are a flowchart showing a first embodiment of the present invention and a diagram showing a communication sequence. In the first embodiment, when a call is sent from one terminal device (telephone 2) connected to the router 1 to the emergency reception desk, the router 1 stores the transmission port number and stores the emergency reception number. When there is a callback (recall) from the device, only the terminal device (telephone 2) of the transmission port number stored in the router 1 is called, so that the automatic answering terminal device (facsimile connected to another port) is called. 3, modem 4) does not respond without permission.
[0030]
First, in the flowchart of FIG. 2A, when a call request is issued from the telephone 2 connected to the analog port 12 (port number 1) to the emergency reception desk (for example, the 110th) (s1), this call is made. After storing the transmission port number "1" at which the call request occurred in the memory 10a of the controller 10 (s2), the transmission processing such as a connection request to the emergency reception desk is performed to the ISDN network 5 (s3). At this time, the controller 10 has stored which emergency reception desk (110 in this example) together with the transmission port number.
[0031]
The transmission process is performed in the following procedure as shown in FIG. The communication control unit 15 transmits a call setup message (SETUP) to the ISDN network 5. Along with this call setting message, the connection destination telephone number (110) and the caller telephone number (if the caller ID is set / contracted) is transmitted to the ISDN network 5. The ISDN line network 5 calls the emergency reception desk 6 which is the connection destination based on the called number information element of the call setting message.
[0032]
At this time, the telephone number of the caller is notified to the emergency reception desk 6. When the caller's telephone number is notified to the emergency reception desk 6, the number notified by the caller is basically displayed as the caller's telephone number. If not, the emergency reception desk 6 is informed of the telephone number (for example, representative number) of the subscriber line connecting the router 1 and the ISDN network 5 by the function of the ISDN network 5.
[0033]
At the emergency reception desk 6, the operator answers the call and talks with the user of the telephone 2. When one of them (the user of the telephone 2 in FIG. 3) goes on-hook (returns the receiver to the telephone), the on-hook signal is transmitted to the controller 10 via the analog port 12-analog port controller 11. The controller 10 generates a disconnection message (DISC) based on the on-hook signal and outputs it to the ISDN network 5 via the communication control unit 15. The ISDN network 5 disconnects the lines of the router 1 and the emergency reception desk 6 in response to the disconnection message.
[0034]
Although the line is temporarily disconnected in the above processing, if a call back (recall) from the same emergency reception desk 6 to the router 1 is made thereafter, the router 1 executes the processing of FIG. When there is a callback from the emergency reception desk 6 (s4), the port number "1" of the terminal device that transmitted the immediately preceding emergency reception desk 6 is read from the memory 10a (s5). Then, a call to the effect that an external line has arrived is made to the analog port 12 (s6). It waits until the terminal device (telephone 2) responds to this call (s7), and if there is a response, connects the ISDN network 5 to this port via the communication control unit 15-analog port control unit 11 to make a call. (S8).
[0035]
In FIG. 3, when a SETUP message is received from the emergency reception desk 6 via the ISDN network 5 (when there is a callback), a call setting reception message (Call Proceeding) is returned to the ISDN network 5 and The port number of the terminal device that transmitted the emergency reception desk 6 immediately before is searched, and the analog port control unit 11 is instructed to call the analog port 12. Further, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When the calling of the telephone 2 connected to the analog port 12 is started, a calling message (Alerting) is returned to the ISDN network 5.
[0036]
When the telephone 2 connected to the analog port 12 responds to this call (when the user goes off-hook), an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency response board 6 and sets the line to a communication enabled state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0037]
As described above, in this embodiment, when a call request is issued from any of the terminal devices connected to the plurality of analog ports 12, 13, 14 to the emergency reception desk 6, the call request is not received. The port number of the analog port is stored as an outgoing port number, and thereafter, when a callback is made from the same emergency reception desk 6, only the terminal device (telephone 2) having the stored port number is called. did. As a result, the terminal device that originally made the call (the person who made the call) can respond to the callback from the emergency reception desk, and another person may answer the call using another telephone, or a facsimile. Will not respond first.
[0038]
Although the first embodiment has been described with respect to the callback from the emergency reception desk, the first embodiment can also be applied to a normal telephone call (communication). In other words, when a call is made to a certain party, and when the other party calls back with a subscriber line number (representative number), the terminal device that made the first call is called. This makes it possible to ensure that the callback reaches the original caller. This embodiment is applicable not only to voice communication but also to communication such as facsimile.
[0039]
<Second embodiment>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a port number for receiving a callback from an emergency reception desk is registered in the router 1 in advance, and after a terminal device (telephone 2) makes a call to the emergency reception desk. When there is a callback (recall) from the emergency reception desk, only the terminal device having the port number registered in the router 1 is called, so that the callback can be received at the most preferable terminal device. ing.
[0040]
First, in the flowchart of FIG. 4, FIG. 4A is a flowchart showing registration processing of the emergency incoming port. When the registration mode is set by the operation of the user (s11), this processing is executed. After setting the registration mode, the user inputs a port number to be registered as an emergency incoming port (s12). When this input is made, this port number is registered (stored) in the memory 10a of the controller 10 as an emergency incoming port number (s13). Since the number of emergency incoming ports is not limited to one, when a plurality of ports are registered, the operations of s12 and s13 are repeatedly executed. When the registration is completed and an end operation is performed (s14), the registration mode is released (s15), and this processing operation is ended to return to the normal operation.
[0041]
FIG. 8B is a flowchart showing the operation when a call is received from the emergency reception desk after transmitting to the emergency reception desk.
When a call request is issued from any of the terminal devices connected to the router 1 (the telephone 2 connected to the analog port 12 in the case of FIG. 1) to the emergency reception desk (for example, the 110th) (s20). Then, the controller 10 performs a calling process such as a connection request to the ISDN network 5 (s21). At this time, the controller 10 may store the number of the emergency reception desk (110 in this example) of the destination.
[0042]
By this calling process, the telephone 2 is connected to the emergency reception desk 6 and can make a call. At this time, the emergency reception desk 6 is notified of the telephone number of the caller. In the notification of the caller telephone number, the number notified by the caller is basically displayed as the caller telephone number, as in the first embodiment. If not, the function of the ISDN network 5 notifies the subscriber line telephone number of the router 1 (for example, a representative number).
[0043]
When the call between the user of the telephone 2 and the operator of the emergency reception desk 6 ends, the line is disconnected. After that, when the same emergency reception desk 6 calls back (recalls) the router 1 (s22). ), Read the emergency call port number from the memory 10a (s23), and call this analog port to notify that an outside line has arrived (s24). It waits until the terminal device responds to this call (s25). If there is a response, the ISDN line network 5 is connected to this analog port via the communication control unit 15-analog port control unit 11 to enable a call. (S26).
[0044]
The communication sequence at the time of this callback will be described with reference to FIG. When a SETUP message is received from the emergency reception desk 6 via the ISDN network 5 (when there is a callback), a call setting reception message (Call Proceeding) is returned to the ISDN network 5 and the emergency reception port number is stored in the memory. The analog port control unit 11 is searched from 10a and instructs the analog port control unit 11 to call the analog port identified by the emergency call port number. Further, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When the calling of the telephone 2 connected to the analog port 12 is started, a calling message (Alerting) is returned to the ISDN network 5.
[0045]
When the telephone 2 connected to the analog port 12 responds to this call (when the user goes off-hook), an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0046]
As described above, in this embodiment, when there is a callback from the emergency reception desk 6, only the terminal device having the port number registered in the emergency call port number is called. As a result, the most suitable terminal device can respond to the callback from the emergency reception desk, and a non-optimal person responds to another telephone, or an automatic response device such as a facsimile responds first. No more.
[0047]
<Third embodiment>
Next, a third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, what kind of terminal equipment is connected to each of the analog ports 12, 13, and 14 of the router 1 is registered in advance, and any one of the terminal equipment (telephone 2) receives an emergency. After a call is made to the reception desk, when there is a callback (recall) from the emergency reception desk, an appropriate type of terminal equipment is selected from various types of terminal equipment connected to each analog port. Then, by calling only the terminal device, a preferred terminal device can be selected and a callback can be received. Generally, a callback from an emergency reception desk is an incoming call for a voice call, so that a telephone is selected and called.
[0048]
First, in the flowchart of FIG. 6, FIG. 6A is a flowchart showing a terminal device type registration process for registering the types of terminal devices connected to the analog ports 12, 13, and 14. When the registration mode is set by the operation of the user (s31), this processing is executed. After setting the registration mode, the type of the terminal device connected to each port is input by the user (s32). The type of the terminal device may be coded and input, for example, telephone: 01, facsimile: 02, modem: 03, and the like. When this input is made, the port number and the terminal device type (code) are registered (stored) in the memory 10a (terminal device type table) of the controller 10 (s33). The operations of s32 and s33 are repeated for each port. When the registration of the terminal device type with respect to the port to which the terminal device is connected is completed and an end operation is performed (s34), the registration mode is released (s35). This processing operation ends, and the process returns to the normal operation.
[0049]
FIG. 13B is a flowchart showing an operation when a call is made to the emergency reception desk and a callback is received from the emergency reception desk.
When a call request is issued from any of the terminal devices connected to the router 1 (the telephone 2 connected to the analog port 12 in the case of FIG. 1) to the emergency reception desk (for example, No. 110) (s40). The controller 10 performs a calling process such as a connection request to the ISDN network 5 (s41). At this time, the controller 10 may store the number of the emergency reception desk (110 in this example) of the destination.
[0050]
By this calling process, the telephone 2 is connected to the emergency reception desk 6 and can make a call. At this time, the emergency reception desk 6 is notified of the telephone number of the caller. In the notification of the caller telephone number, the number notified by the caller is basically displayed as the caller telephone number, as in the first embodiment. If not, the function of the ISDN network 5 notifies the subscriber line telephone number of the router 1 (for example, a representative number).
[0051]
When the telephone call between the user of the telephone 2 and the operator of the emergency reception desk 6 ends, the line is disconnected. After that, when the same emergency reception desk 6 calls back (recalls) to the router 1 (s42). The port number to which a predetermined terminal device (telephone in this case) is connected is read from the terminal device type table (s43), and a call indicating that an external line has arrived is made to this analog port (s44). . It waits until the terminal device responds to this call (s45). If there is a response, the ISDN network 5 is connected to this analog port via the communication control unit 15-analog port control unit 11 to enable a call. It does (s46).
[0052]
The communication sequence at the time of this callback will be described with reference to FIG. When a SETUP message is received from the emergency reception desk 6 via the ISDN network 5 (when there is a callback), a call setting reception message (Call Proceeding) is returned to the ISDN network 5 and the terminal device type table is displayed. The analog port (12) to which the telephone is connected is searched with reference to the reference. Then, it instructs the analog port control unit 11 to call the analog port. Further, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When the calling of the telephone 2 connected to the analog port 12 is started, a calling message (Alerting) is returned to the ISDN network 5.
[0053]
When the telephone 2 connected to the analog port 12 responds to this call (when the user goes off-hook), an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0054]
Thus, in this embodiment, when there is a callback from the emergency reception desk 6, the analog port to which a predetermined terminal device (telephone) is connected is searched from the terminal device type table set in the memory 10a, Calls are made only to that analog port. As a result, in response to the callback from the emergency reception desk, only the optimal (responsible) terminal device can be called, and another type of terminal device (for example, a facsimile) answers first and the call is made. Will not be impossible.
[0055]
When a plurality of telephones are registered in the terminal device type table, that is, when the telephones are connected to a plurality of analog ports, all of the telephones may be called. The call may be made only to the telephone set of (1).
[0056]
Although the third embodiment has described the callback from the emergency reception desk, the present invention is not limited to the callback, and can be applied to all incoming calls from the emergency reception desk.
Also, the present invention can be applied to an incoming call from a general destination. That is, the telephone number and the terminal device type of each destination are registered in the router 1 in advance, and when an incoming call is received, the terminal device type is determined from the telephone number of the destination and the same type of terminal device is called. As described above, by selecting the analog port to be called in the above processing, it is possible to always make a call (communication) between the same terminal devices.
[0057]
<Fourth embodiment>
A fourth embodiment of the present invention will be described with reference to FIGS. The fourth embodiment is particularly applied when different telephone numbers are set to the respective analog ports. In the router 1 of this embodiment, when a call is made to the emergency reception desk 6, When a call is made from a terminal device of any port (regardless of the telephone number assigned to the port), a predetermined emergency notification number is notified as a source telephone number.
[0058]
In this way, by notifying the emergency reception desk of a specific emergency notification number as the telephone number of the caller, when the emergency reception desk calls back, the emergency reception number is called back. That is, when the router 1 receives an incoming call, it can make an appropriate terminal device respond by calling the analog port corresponding to the incoming telephone number without special sorting.
[0059]
First, the registration processing of the emergency notification number will be described with reference to the flowchart of FIG. When the registration mode is set by the operation of the user (s51), this processing is executed. After setting the registration mode, the user inputs a telephone number to be registered as the emergency notification number (s52). This telephone number needs to be one of the telephone numbers assigned to the plurality of analog ports, and usually the telephone number assigned to the analog port 12 to which the telephone 2 is connected is selected. When this input is made, this telephone number is registered (stored) in the memory 10a of the controller 10 as an emergency notification number (s53). Since the registration is completed by the above operation, the registration mode is released (s54), and this processing operation is ended to return to the normal operation.
[0060]
FIG. 9B is a flowchart showing the call processing operation of the router with the above settings and the operation when a callback is received from the emergency reception desk.
When a call request is generated from any of the terminal devices connected to the router 1 (s60), it is determined whether the call request is addressed to the emergency reception desk (s61). If the call request is not for the emergency reception desk but for the normal destination, the caller number assigned to the terminal device (analog port) is notified (or not notified) according to the setting (contract). ), And performs a calling process to the ISDN network 5 (s62). In this case, the subsequent processing is the same as the normal call processing.
[0061]
On the other hand, when the call request is addressed to the emergency reception desk (for example, No. 110), the emergency notification number is read from the memory 10a (s63), and a connection request message to which the emergency notification number is added is formed. A calling process is performed on the ISDN network 5 (s64).
By this calling process, the telephone 2 is connected to the emergency reception desk 6 and can make a call. At this time, the emergency reception desk 6 is notified of the emergency notification number as a caller telephone number.
[0062]
When the telephone call between the user of the telephone 2 and the operator of the emergency reception desk 6 ends, the line is disconnected. After that, when the same emergency reception desk 6 calls back the router 1 (s65), a special call is made. Without performing the sorting process, a call indicating that an outside line has arrived is made to the analog port of the callback destination telephone number (s66). It waits until the terminal device responds to this call (s67). If there is a response, the ISDN network 5 is connected to this analog port via the communication control unit 15-analog port control unit 11 to enable a call. (S68).
[0063]
A communication sequence at the time of calling to the emergency reception desk and at the time of callback will be described with reference to FIG. When the terminal device (telephone 2) is off-hook and the telephone number (110) of the emergency reception desk is dialed, the analog port control unit 11 receives the off-hook signal and the dialing of 110, converts them into digital data, and issues a call. It is transmitted to the controller 10 as a call request.
[0064]
The controller 10 recognizes that the call request is addressed to the emergency reception desk based on the input telephone number, reads the emergency notification number in response to the request, and notifies the emergency notification number. Create a call setup message. Then, the communication control unit 15 transmits the call setup message (SETUP) to the ISDN network 5. The ISDN line network 5 calls the emergency reception desk 6 which is the connection destination based on the called number information element of the call setting message. At this time, the emergency notification number is notified to the emergency reception desk 6 as the telephone number of the caller.
[0065]
At the emergency reception desk 6, the operator answers the call and talks with the user of the telephone 2. When one of them (the user of the telephone 2 in FIG. 9) goes on-hook (returns the receiver to the telephone), the on-hook signal is transmitted to the controller 10 via the analog port 12-analog port controller 11. The controller 10 generates a disconnection message (DISC) based on the on-hook signal and outputs it to the ISDN network 5 via the communication control unit 15. The ISDN network 5 disconnects the lines of the router 1 and the emergency reception desk 6 in response to the disconnection message.
[0066]
Thereafter, when the emergency reception desk 6 calls back, the router 1 receives a call setup message (SETUP) from the emergency reception desk 6 via the ISDN network 5. The router 1 returns a call setting acceptance message (Call Proceeding) to the ISDN network 5. The analog port control unit 11 is instructed to make a call to the analog port 12 to which the destination telephone number of the call setting message is assigned. Further, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When the calling of the telephone 2 connected to the analog port 12 is started, a calling message (Alerting) is returned to the ISDN network 5.
[0067]
When the telephone 2 connected to the analog port 12 responds to this call (when the user goes off-hook), an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0068]
As described above, in this embodiment, when a call is made to the emergency reception desk 6, the emergency notification number is notified to the emergency reception desk 6 which is the other party. However, since the callback arrives at the telephone number of the terminal device to be responded to, it is possible to cause the most appropriate terminal device to receive / respond without the need for the router 1 to perform a special distribution process when the call is received.
[0069]
<Modified embodiment>
In the first to fourth embodiments, when there is a callback from the emergency reception board 6, a predetermined terminal device is selected and called, and the apparatus waits until a response is received. In an embodiment of this modification, when the selected terminal device does not answer the call for a certain period of time or when the selected terminal device is not ready to call (during off-hook, busy), another call is made. A call is made to the terminal device so that any terminal device can respond to the callback from the emergency reception desk 6.
[0070]
<Modification 1>
A first modified embodiment will be described with reference to FIGS. In this embodiment, when the selected terminal device does not respond or cannot be called, all the terminal devices are called.
[0071]
FIG. 10 is a flowchart showing the operation at the time of the call. This flowchart is a modification of the calling operation at the time of the callback in the first to fourth embodiments, and includes s6 and s7 in FIG. 2, s24 and s25 in FIG. 4, s44 and s45 in FIG. 6, and s66 and s67 in FIG. It is executed instead.
First, a calling process is performed on the (highest priority) analog port selected in the basic operation (FIGS. 2, 4, 6, and 8) (s71). If the terminal of this analog port is in a call-disabled state such as being off-hook (s72), the process proceeds directly to s75 to perform a calling process for all the terminal devices (s75), and one of the terminal devices responds. Then, the process waits (s76).
[0072]
If the selected terminal device is in a callable state, a call is made. If there is a response within a predetermined time (s73), a line is connected to make a callable state (s8 in FIG. 2, s26 in FIG. 4). S46 in FIG. 6 and s68 in FIG. 8). On the other hand, if there is no response from the terminal device even if the calling is continued for a predetermined time (s74), the process proceeds to s75 to perform a calling process for all the terminal devices (s75), and one of the terminal devices responds. Then, the process waits (s76).
[0073]
FIG. 11 is a diagram showing a communication sequence at the time of the callback. FIG. 5A shows a sequence in a case where the calling terminal device does not respond within a predetermined time. When the router 1 receives the call setup message (SETUP) of the callback from the emergency reception desk 6, the router 1 returns a call setup acceptance message (Call Proceeding) to the ISDN line network 5, and the analog port selected based on the reception condition. Make a call to. At this time, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When the calling of the telephone 2 connected to the analog port 12 is started, a calling message (Alerting) is returned to the ISDN network 5.
[0074]
If the terminal device connected to the selected analog port does not respond to this call within a certain period of time, it calls all other terminal devices. When any of the terminal devices responds, an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0075]
FIG. 6B shows a sequence in a case where the terminal equipment to be called cannot be called due to off-hook or the like. When the terminal device (telephone 2) connected to the port number 1 is off-hook before the callback, when the router 1 receives a call setup message (SETUP) of the callback from the emergency reception desk 6, the router attempts to make a call. It is determined from the state of the analog port that the call cannot be made, and a call is made to all other terminal devices. At the same time, a call setting acceptance message and a call message (Call Proceeding / Alerting) are returned to the ISDN line network 5. At this time, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When one of the calling terminal devices answers, an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0076]
<Modification 2>
A second modified embodiment will be described with reference to FIGS. In this embodiment, when the selected terminal device does not respond or cannot be called, another terminal device is sequentially called based on the priority.
[0077]
FIG. 12 is a flowchart showing the operation at the time of the call. This flowchart is a modification of the calling operation at the time of callback in the first to fourth embodiments, similarly to FIG. 10, and includes s6 and s7 in FIG. 2, s24 and s25 in FIG. 4, s44 and s45 in FIG. 6, and FIG. 8 instead of s66 and s67.
First, a calling process is performed on the (highest priority) analog port selected in the basic operation (FIGS. 2, 4, 6, and 8) (s81). If the terminal device of this analog port is in a call-disabled state such as being off-hook (s82), the terminal device of the next priority is selected without calling (s85), and the terminal device is called. Processing is performed (s82).
Note that the priorities of the plurality of terminal devices are set in the memory 10a in advance.
[0078]
If the selected terminal device is in a callable state, a call is made. If there is a response within a predetermined time (s83), a line is connected to make a callable state (s8 in FIG. 2, s26 in FIG. 4). S46 in FIG. 6 and s68 in FIG. 8). On the other hand, if there is no response from the terminal device even if the call is continued for a predetermined time (s84), the process proceeds to s85, where the terminal device of the next priority is selected, and the calling process is performed on the terminal device ( s82).
In the operation from s84 to s85, when the call is switched to the terminal device of the next priority, the call to the current terminal device may be stopped, this call is continued as it is, and the terminal of the next priority is further continued. A call to the device may be made.
[0079]
FIG. 13 is a diagram showing a communication sequence at the time of the callback. FIG. 5A shows a sequence in a case where the calling terminal device does not respond within a predetermined time. When the router 1 receives the call setup message (SETUP) of the callback from the emergency reception desk 6, the router 1 returns a call setup acceptance message (Call Proceeding) to the ISDN line network 5, and the analog port selected based on the reception condition. Make a call to. At this time, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). When a call is started at the analog port, a call message (Alerting) is returned to the ISDN network 5.
[0080]
If the terminal device connected to the selected analog port does not answer this call within a certain period of time, the call is made to the next terminal device according to the priority order (in this figure, the call to the previous terminal device is also stopped). Without any changes). If the next terminal device does not respond, a call is made to the terminal device of the next priority. When any of the calling terminal devices responds, an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0081]
FIG. 7B shows a sequence in a case where the terminal equipment to be called cannot be called because the terminal equipment is off-hook or the like. When the terminal device (telephone 2) connected to the port number 1 is off-hook before the callback, when the router 1 receives a call setup message (SETUP) of the callback from the emergency reception desk 6, the router attempts to make a call. It is determined from the state of the analog port that the call cannot be made, and a call is made to the next terminal device according to the priority order. At the same time, a calling message (Call Proceeding) and a calling message (Alerting) are returned to the ISDN line network 5. At this time, the fact that there is an incoming call from the emergency reception desk 6 (No. 110) is displayed on a display (not shown). If the next terminal does not respond for a certain period of time, a call is made to the terminal of the next priority. When any of the calling terminal devices responds, an off-hook signal is transmitted to the controller 10 via the analog port control unit 11. Controller 10 outputs a response message (CONN) in response to the off-hook signal. In response to the response message, the ISDN line network 5 connects the line with the emergency reception desk 6 and sets the line to be in a communicable state. Then, when a response confirmation message (CONN ACK) is transmitted from the ISDN network 5, communication becomes possible.
[0082]
In this way, if the selected terminal device does not respond for a certain period of time, or if the call cannot be made in the off-hook state, the call is made to another terminal device, so that it is not the best but the next best terminal device Can receive a callback from an emergency reception desk or the like.
[0083]
【The invention's effect】
As described above, according to the present invention, even if a router has a plurality of analog ports and different terminal devices are connected to each other, it is possible to make a callback from a call partner arrive at the most suitable terminal device. .
In addition, even when an incoming call is received from the emergency reception desk, the incoming call can be reliably allocated to the most suitable terminal device that can surely respond and receive the incoming call.
[Brief description of the drawings]
FIG. 1 is a block diagram of a router to which the present invention is applied;
FIG. 2 is a flowchart illustrating a first embodiment of the present invention.
FIG. 3 is a communication sequence diagram for explaining the first embodiment;
FIG. 4 is a flowchart illustrating a second embodiment of the present invention.
FIG. 5 is a communication sequence diagram for explaining the second embodiment.
FIG. 6 is a flowchart illustrating a third embodiment of the present invention.
FIG. 7 is a communication sequence diagram for explaining the third embodiment;
FIG. 8 is a flowchart illustrating a fourth embodiment of the present invention.
FIG. 9 is a communication sequence diagram for explaining the fourth embodiment;
FIG. 10 is a flowchart illustrating a first modified embodiment of the present invention.
FIG. 11 is a communication sequence diagram for explaining the first modified embodiment;
FIG. 12 is a flowchart illustrating a second modified embodiment of the present invention.
FIG. 13 is a communication sequence diagram for explaining the second modified embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Router, 2 ... Telephone, 3 ... Facsimile, 4 ... Modem, 5 ... ISDN line network, 6 ... Emergency reception desk, 10 ... Controller, 10a ... Memory, 11 ... Analog port control unit, 12, 13, 14 ... Analog Port, 15: Communication control unit

Claims (8)

A router having a plurality of analog ports for connecting terminal devices,
Storage means for storing a port number when a call request to a predetermined destination is issued from any of the analog ports;
Control means for selecting an analog port of the stored port number when there is a callback from the predetermined destination, and calling only the analog port;
With a router. The router according to claim 1, wherein the predetermined destination is an emergency reception desk. A router having a plurality of analog ports for connecting terminal devices,
Of the plurality of analog ports, storage means for storing the port number of the emergency incoming port to receive a callback from the emergency reception desk,
After the call to the emergency reception desk, when there is a callback from this emergency reception desk, regardless of the incoming telephone number or port designation information at that time, select the emergency reception port, and only for this emergency reception port Control means for making a call;
With a router. A router having a plurality of analog ports for connecting terminal devices,
Terminal device type storage means for storing the type of terminal device connected to each analog port,
When an incoming call is received from the line, an analog port to which a terminal device of a type that can respond to the incoming call is connected is selected from the terminal device type storage means, and a call is made only to the selected analog port. Control means for performing;
With a router. The router according to claim 4, wherein the incoming call is a callback from an emergency reception desk. A router that has a plurality of analog ports for connecting terminal devices, and a different telephone number is assigned to each port,
Storage means for storing a telephone number to be notified when making a call to the emergency reception desk as an emergency notification number,
Control means for notifying the emergency notification number when calling the emergency reception desk;
With a router. The control means stores the priority order of the plurality of analog ports, and when performing a call process on the analog port selected at the time of an incoming call, a terminal device connected to the analog port cannot call, or 7. The router according to claim 1, further comprising means for selecting an analog port having the next priority when there is no response for a predetermined time, and performing a calling process for the analog port. The control means, when performing a call process to the analog port selected at the time of the incoming call, if the terminal device connected to the analog port is unable to call, or if there is no response to the call for a certain time, all other 7. The router according to claim 1, further comprising means for performing a calling process for an analog port of the router.

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