JP2008135806A - Ip telephone device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for using an IP telephone line stored in an IP switching device for transmission/reception from an extension terminal without using any IP switching devices even if the IP switching device is stopped by failure, or the like without providing any new by bass communication lines. <P>SOLUTION: An IP telephone terminal connected to the IP switching device storing an IP outside line via a LAN or a WAN has: an IP extension operation section functioning as the extension terminal of the IP switching device; an IP outside line operation section functioning as a terminal directly connected to the IP outside line without using any IP switching devices; a means for detecting whether the operation of the IP switching device is normal or abnormal; and a connection information storage means for connecting to the IP outside line. When it is detected that the operation of the IP switching device is abnormal, the IP outside line operation section is activated for communication via the IP outside line, based on information for connection to the IP outside line stored in the connection information storage means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an IP telephone terminal that can be directly connected to an IP telephone service from an extension terminal when the IP switching apparatus cannot be used due to a failure or the like in an extension terminal connected to an IP switching apparatus that accommodates an IP telephone line. It is.

  In an extension terminal of a conventional IP local area telephone system, a gateway device (hereinafter abbreviated as GW) that bypasses an analog line or another IP line when the function of the main apparatus becomes unavailable due to a failure of the main apparatus or communication wiring. The communication path is formed by switching to a line with a different communication medium or a different telephone number. (Fig. 9, Fig. 10)

This is described in Patent Document 1, “In an extension IP phone under IP-PBX, the power supply of the IP phone itself or connection to the IP network is detected and connected to the general public network via a gateway when a failure occurs.” It is shown as such.
Japanese Patent Laid-Open No. 2005-26898

However, in the conventional bypass method, the communication line used at the time of failure is different from that at normal time, and it is necessary to maintain a circuit contract that is not used regularly (used only at the time of failure). When the operation is stopped due to maintenance or the like, the accommodated communication line is disconnected, so that there is a disadvantage that outgoing / incoming calls cannot be made through the communication line.
In addition, when switching to the detour analog line accommodated in the IP switching device, the communication line is secured for emergency use, but outgoing and incoming calls with a telephone number different from the telephone number of the IP telephone service that is normally used There was a drawback of becoming.

  An object of the present invention is to use an IP telephone line accommodated by the IP switching apparatus even when the IP switching apparatus is stopped due to a failure or the like without providing a new bypass communication line, and through the IP switching apparatus. The object is to provide means for making and receiving calls from an extension terminal.

  An IP telephone terminal according to the present invention is connected to an IP exchange apparatus accommodating an IP external line via a LAN or WAN, and does not go through an IP extension operation unit functioning as an extension terminal of the IP exchange apparatus and the IP exchange apparatus. An IP external line operation unit functioning as a terminal directly connected to the IP external line, means for detecting whether the operation of the IP switching apparatus is normal or abnormal, and a connection information storage means for connecting to the IP external line And activates the IP outside line operation unit based on the information for connecting to the IP outside line stored in the connection information storage means. And communicating through the IP external line.

  According to the present invention, since the IP telephone line used through the IP switching apparatus at the normal time is utilized even when the IP switching apparatus fails, the IP telephone is newly established without permanently installing a communication line for failure. There is no need for an account contract to connect to the service, and the line maintenance / contract costs can be reduced.

  Conventionally, since only the operation state of the extension interface is detected between the IP switching apparatus and the extension terminal, there is a disadvantage that switching is caused even by a partial failure such as extension wiring. Since the operating state of the external line interface of the apparatus can also be detected, the normality of the system can be confirmed in a wide range including the IP switching apparatus and the IP line (external line), and appropriate switching can be performed.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing a first embodiment of the present invention. An IP switching apparatus 1 is a private branch exchange (PBX) or a key telephone apparatus (hereinafter referred to as “main apparatus 1”) that accommodates an IP line. An IP external line control unit 11 for connecting to an IP telephone service 4 provided by a communication carrier as an IP external line, information storage means 12 necessary for connection, an IP internal line control unit 13 for accommodating an IP telephone terminal, and an IP external line The extension control unit 14 is configured to control call connection between IP extensions and IP extensions.

  The IP telephone terminal 2 according to the present invention includes an IP extension operation unit 23 for operating as an IP extension terminal of the main device 1, an IP extension interface monitoring unit 231 for detecting whether the operation of the IP extension interface is normal, or An IP extension port 232 for connecting the IP extension control unit 13 of the main apparatus 1 and the IP extension operation unit 23 of the IP telephone terminal 2, and for connecting to the IP telephone service 4 provided by the communication carrier as an IP external terminal in the event of a failure. IP external line operation unit 21, IP external line interface monitoring unit 211 that detects whether the operation of the IP external line interface is normal or abnormal, and the IP external line port that connects the IP telephone service 4 and the IP external line operation unit 21 of the IP telephone terminal 2 212, the line connection information memory 22 in which information for connecting to the line is stored, and the respective detection means and control unit are managed. And a location control unit 24.

  The IP external port 212 and the IP extension port 232 of the IP telephone terminal 2 or the connection port of the main apparatus can be configured by a well-known R45J connector and HUB.

  During normal operation, the IP extension control unit 13 of the main device 1 and the IP extension operation unit 23 of the IP telephone terminal 2 operate together, and the IP external line (IP telephone service 4) is the router 3 -the IP external line of the main device 1 Via the route of the IP extension operation unit 23 of the IP telephone terminal 2 through the control unit 11 -the exchange control unit 14 -the IP extension control unit 13.

  At this time, the IP extension operation unit 23 operates based on the IP extension information (E1 to E5 in FIG. 2) in the line connection information memory, and the function of the IP outside line operation unit 21 is stopped. However, when the operation of the main device 1 is stopped for maintenance or when the power is cut off, the functions of the control units of the main device 1 are stopped, and the IP external line (IP telephone service 4) is disconnected. Unusable state.

  Therefore, in the present invention, when the function of the main device 1 is stopped, the control signal M135 from the IP extension control unit 13 of the main device 1 does not arrive at the IP extension interface monitoring unit 231 of the IP telephone terminal 2. Then, it is determined that the extension function of the main apparatus 1 is abnormal (stopped), and the IP outside line interface monitoring unit 211 is controlled by the control of the apparatus control unit 24 so that the IP outside line information in the line connection information memory 22 (C1 in FIG. To C3), the operation state confirmation signal M215 is output to the IP outside line control unit 11 of the main apparatus 1.

  When the IP outside line control unit 11 of the main device 1 receives the operation state confirmation signal M215 from the IP telephone terminal 2, the IP outside line control unit 11 operates normally and can use the IP outside line (IP telephone service 4). A display signal M115 indicating normal operation of the IP external line is returned to the extension terminal 2.

When the device control 24 of the IP telephone terminal 2 detects that the normal operation display signal M115 is received via the IP external line interface monitoring unit 211, the operation of the IP external line interface of the main device 1 is determined to be normal, and the IP external line The control unit 21 keeps the function stopped.
On the other hand, when the operation of the main apparatus 1 is stopped for maintenance, or when the power is cut off, the normal operation display signal M115 from the main apparatus 1 is not returned.

  The device control unit 24 of the IP telephone terminal 2 cannot receive the normal operation display signal M115 from the main device 1 in the IP external line interface monitoring unit 211, so that the IP external line (IP phone service 4) of the main device 1 cannot be used. The operation of the IP outside line control unit 21 is started based on the IP outside line information (C4 to C6 in FIG. 2) of the line connection information memory 22 registered in advance, and the IP outside line (IP telephone service 4) Connect to the IP telephone service 4 directly.

  At this time, by making the account information registered in the line connection information memory 22 the same value as the contents when the main apparatus 1 is connected to the IP outside line, it is possible to make and receive calls with the same IP outside line telephone number as normal. Become.

FIG. 2 is a diagram showing an example of registered contents in the line connection information memory 22 in the IP telephone terminal 2.
IP address and subnet mask for IP extension connection of main device 1, IP address and extension number (E1 to E5) of extension interface of main device 1, IP for IP telephone service 4 (IP external line) connection of communication carrier It consists of the address and subnet mask, the server address and telephone number and password for the IP telephone service 4, and the address (C1 to C6) of the main apparatus IP external line interface when checking the IP external line status of the main apparatus 1 In each connection, communication is performed based on these information.

  FIG. 3 is a diagram showing the processing of the device control unit 24 of the IP telephone terminal 2. The device control unit 24 of the IP telephone terminal 2 receives the IP extension information from the line connection information memory 22 at the start of activation (N 241). (E1 to E5) are read (S2411), the processing of the IP extension operation unit 23 is started (S2412), and the state shifts to the normal state (N242) connected to the IP extension control unit 13 of the main apparatus 1.

  Next, in the normal state (N242), the IP extension interface monitoring unit 231 detects whether or not the control signal M135 from the IP extension control unit 13 of the main apparatus 1 arrives (S2421).

  At this time, when the control signal M135 is detected, the control of S2421 is continued, and when the control signal M135 is not detected, the IP external line information (C1 to C3) is read from the line connection information memory 22 (S2422), and the IP The external line interface monitoring unit 211 is validated, and an operation state confirmation signal M215 is sent to the IP external line control unit 11 of the main device 1 (S2423).

Next, the IP external line interface monitoring unit 211 detects whether or not a normal operation display signal M115 indicating that the IP external line control unit 11 of the main apparatus 1 is operating normally is returned, and the signal M115 is detected. If this happens, the normal operation from S2421 is continued (S2424).
At this time, when the normal operation display signal M115 is not detected, the IP outside line account information (C4 to C6) is read from the line connection information memory 22 (S2425), the processing of the IP outside line operation unit 21 is started and the IP The telephone service 4 is connected (S2426). Further, the function of the IP extension operation unit 23 is stopped (S2427), and the state shifts to the failure state (N243).

Next, in the failure state (N243), the IP outside line interface monitoring unit 211 outputs an operation state confirmation signal M215 to the IP outside line control unit 11 of the main device 1 (S2431).
At this time, when the normal operation display signal M115 is not detected, the control from S2431 is continued (S2432), and when the normal operation display signal M115 is detected, the function of the IP outside line operation unit 21 is stopped ( In step S2433), if the operation as the IP telephone terminal is continued, the process returns to the normal state (N241 to N242).

  FIG. 4 shows a block configuration of an IP telephone terminal according to the second embodiment of the present invention. The second embodiment of the present invention shows a configuration in which an interface port for connecting to an IP extension and an interface port for connecting to an IP outside line are shared by one physical port (IP common port 222) in the IP telephone terminal 2. It is. The device control unit 24 switches the IP extension information (E1 to E5) and the IP outside line information (C1 to C6) in the line connection information memory 22 according to each connection destination, and the IP common port 222 is changed to the IP extension. Switch between port and IP external port.

  The IP common port 222 according to the second embodiment of the present invention uses a well-known R45J connector, HUB, and the like, similar to the IP external port 212 and the IP internal port 232 of the IP telephone terminal 2 according to the first embodiment. It can be configured by adding an extension port switching mechanism.

FIG. 5 shows a block configuration of an IP telephone terminal according to the third embodiment of the present invention.
In Embodiment 1 and Embodiment 2 of the present invention, when the control signal M135 from the IP extension control unit 13 of the main device 1 does not arrive, it is determined that the extension function of the main device 1 is abnormal, In this case, in order to confirm the operating state of the IP external line interface unit of the main device, the operation state confirmation signal M215 is transmitted, and when the main device 1 does not return the normal operation display signal M115, the main device 1 The IP outside line (IP telephone service 4) was determined to be in an abnormal state.

  In the third embodiment of the present invention, as a method for confirming the operating state of the IP external line interface unit of the main apparatus, it is input / output to / from the IP external line control unit 11 of the main apparatus 1 instead of the methods of the first and second embodiments. The IP external line interface monitoring unit 211 of the IP telephone terminal 2 monitors whether or not an IP packet is transmitted / received.

The type of the IP packet is a message such as an IP telephone call (call / answer / disconnect) such as an ARP (Address Resolution Protocol) or SIP (Session Initiation Protocol) message, and the IP external line control unit 11 of the main apparatus 1. Can be used for monitoring for confirming the operating state of the IP external line interface unit of the main apparatus. In addition to ARP and SIP messages, MGCP (Media Gateway Control Protocol), H.264, etc. H.248 / MEGACO (Media Gateway Control), H.264. 323 (international multimedia communications
There are other methods such as protocol standard).

  In FIG. 5, when the control signal M135 from the IP extension control unit 13 of the main device 1 does not arrive and it is determined that the extension function of the main device 1 is abnormal (stopped), the IP external line interface unit of the main device 1 In order to confirm the operating state of the IP telephone terminal 2, the device control unit 24 of the IP telephone terminal 2 operates the IP external line interface monitoring unit 211, and whether or not IP packets are input / output to / from the IP external line control unit 11 of the main device 1 Is monitored by the IP external line interface monitoring unit 211.

  When the IP external line interface monitoring unit 211 detects that there is transmission / reception of an IP packet input / output to / from the IP external line control unit 11 of the main device 1, as in the case of the first embodiment or the second embodiment, If the transmission / reception of the IP packet input / output to / from the IP outside line control unit 11 of the main apparatus 1 is not detected, the IP outside line account information (C4 to C6) is read from the line connection information memory 22 Then, the processing of the IP external line operation unit 21 is started to directly connect to the IP telephone service 4, and the function of the IP extension operation unit 23 is stopped to shift to the failure handling state.

FIG. 6 shows a block configuration of an IP telephone terminal according to Embodiment 4 of the present invention.
In the fourth embodiment of the present invention, as a method of confirming the operating state of the IP external line interface unit of the main device, a PING command (a type of IP packet) is sent from the IP external line interface monitoring unit 211 to the IP external line control unit 11 of the main device. It is transmitted to an IP address and the presence or absence of the response is confirmed (or vice versa).

A PING (Packet Internet Groper) command is a kind of reply request command of an ICMP (Internet Control Message Protocol) command.
In FIG. 6, when the control signal M135 from the IP extension control unit 13 of the main device 1 does not arrive and it is determined that the extension function of the main device 1 is abnormal (stopped), the IP external line interface unit of the main device 1 In order to confirm the operating state of the IP telephone terminal 2, the device control unit 24 of the IP telephone terminal 2 operates the IP external line interface monitoring unit 211, and a PING which is a reply request command addressed to the IP address of the IP external line control unit 11 of the main device 1 Send a command. Then, the IP external line interface monitoring unit 211 checks whether or not there is a response to the PING command that is a reply request command.

When the IP external line interface monitoring unit 211 confirms that there is a response to the PING command that is a reply request command, the normal operation is continued, and when the response to the PING command cannot be confirmed, When transmission / reception of the IP packet input / output to / from the IP outside line control unit 11 is not detected, the IP outside line account information (C4 to C6) is read from the line connection information memory 22, and the processing of the IP outside line operation unit 21 is performed. Start and connect directly to the IP telephone service 4, stop the function of the IP extension operation unit 23, and shift to the failure handling state.
Further, instead of the PING command, a monitoring-dedicated message may be used.

FIG. 7 shows a block configuration of an IP telephone terminal according to the fifth embodiment of the present invention.
In the fifth embodiment of the present invention, as a method of confirming the operating state of the IP external line interface unit of the main device, the IP external line operation unit 21 actually sends the telephone number to the telephone number of the IP external line control unit 11 of the main device ( Make a phone call) and check for any reaction. (At this time, the IP outside line control unit 21 needs to be another telephone number)

  In FIG. 7, when the control signal M135 from the IP extension control unit 13 of the main device 1 does not arrive and it is determined that the extension function of the main device 1 is abnormal (stopped), the IP external line interface unit of the main device 1 In order to confirm the operating state, the IP outside line operation unit 21 actually calls (calls) the telephone number of the IP outside line control unit 11 of the main apparatus and confirms whether or not there is a reaction.

  When the IP external line operation unit 21 confirms that there is a response from the telephone number of the IP external line control unit 11 of the main apparatus, the normal operation is continued, and the telephone number of the IP external line control unit 11 of the main apparatus is If the response cannot be confirmed, the IP outside line account information (C4 to C6) is read out from the line connection information memory 22, the processing of the IP outside line operation unit 21 is started, and the IP telephone service 4 is directly connected. The function of the extension operation unit 23 is stopped, and a transition is made to a failure state.

FIG. 8 shows a block configuration of an IP telephone terminal according to Embodiment 6 of the present invention.
In the seventh embodiment of the present invention, as a method of confirming the operating state of the IP external line interface unit of the main device, the IP extension operation unit 23 actually transmits the telephone number to the telephone number of the IP external line control unit 11 of the main device ( It is characterized by confirming the presence or absence of the reaction. When the call is transmitted from the IP extension operation unit 23, a return image is obtained.

  In FIG. 8, when the control signal M135 from the IP extension control unit 13 of the main apparatus 1 does not arrive and it is determined that the extension function of the main apparatus 1 is abnormal (stopped), the IP external line interface unit of the main apparatus 1 In order to confirm the operating state, the IP extension operation unit 23 returns to the telephone number of the IP external line control unit 11 of the main apparatus, calls (calls), and confirms the presence or absence of the reaction.

  When the IP extension operation unit 23 confirms that there is a response from the telephone number of the IP external line control unit 11 of the main device, the normal operation is continued, and from the telephone number of the IP external line control unit 11 of the main device, If the response cannot be confirmed, the IP outside line account information (C4 to C6) is read out from the line connection information memory 22, the processing of the IP outside line operation unit 21 is started, and the IP telephone service 4 is directly connected. The function of the extension operation unit 23 is stopped, and the state shifts to the failure handling state.

  In the third to sixth embodiments of the present invention, FIGS. 5 to 8 show the IP external port 212 and the IP extension port 232 in the IP telephone terminal 2, but the second embodiment of FIG. Similarly, the IP common port 222 can be used.

  The IP telephone terminal according to the present invention has various embodiments such as an IP telephone and a terminal adapter, and a terminal having a wireless interface. In addition, the main apparatus includes an embodiment such as a key telephone apparatus compatible with an IP telephone or an IP-PBX (local server).

FIG. 1 is a diagram showing a block configuration of an IP telephone terminal according to Embodiment 1 of the present invention. FIG. 2 shows the contents of the line connection information memory 22 of the IP telephone terminal according to the first embodiment of the present invention. FIG. 3 is a flowchart showing processing of failure determination and connection destination switching control in the device control unit 24 of the IP telephone terminal according to the first embodiment of the present invention. FIG. 4 is a diagram showing a block configuration of an IP telephone terminal according to Embodiment 2 of the present invention. FIG. 5 is a block diagram showing an IP telephone terminal according to the third embodiment of the present invention. FIG. 6 is a diagram showing a block configuration of an IP telephone terminal according to Embodiment 4 of the present invention. FIG. 7 is a diagram showing a block configuration of an IP telephone terminal according to the fifth embodiment of the present invention. FIG. 8 is a block diagram showing an IP telephone terminal according to Embodiment 6 of the present invention. FIG. 9 is a diagram showing a configuration for connecting to another analog line in the terminal as a conventional detour configuration at the time of failure. FIG. 10 is a diagram showing a configuration for connecting to another line via a GW as a conventional bypass configuration at the time of failure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main apparatus 11 IP external line control part 12 Information storage means for connecting to a line 13 IP extension control part 14 Exchange control part 2 IP telephone terminal 21 IP external line operation part 211 IP external line interface monitoring part 212 of main apparatus 1 IP external line port DESCRIPTION OF SYMBOLS 22 Line connection information memory 222 IP common port 23 IP extension operation | movement part 231 IP extension interface monitoring part 232 IP extension port 24 Apparatus control part 3 Router 4 IP telephone service (IP telephone network) of a communication carrier

Claims (8)

An IP telephone terminal connected via an LAN or WAN to an IP switching apparatus that accommodates an IP external line,
An IP extension operating unit functioning as an extension terminal of the IP switching device, and an IP external line operating unit functioning as a terminal directly connected to the IP outside line without going through the IP switching device, Means for detecting whether the operation is normal or abnormal, and connection information storage means for connecting to the IP external line;
When it is detected that the operation of the IP exchange apparatus is abnormal, the IP external line operation unit is activated based on the information for connecting to the IP external line stored in the connection information storage means, and the IP external line is An IP telephone terminal characterized by communicating via The IP telephone terminal according to claim 1,
The interface port for connecting to the IP extension and the interface port for connecting to the IP external line are configured as different physical ports, and has a means for stopping or activating the function of one of the interface ports and stopping the function. An IP telephone terminal characterized in that it can operate as a hub function interface port. The IP telephone terminal according to claim 1,
The interface port for connecting to the IP extension and the interface port for connecting to the IP extension are configured as dual-purpose physical ports, and the IP extension connection information stored in the connection information storage means and the IP extension connection The IP telephone terminal is characterized in that it communicates via the IP extension or the IP outside line by switching the information. An IP telephone terminal according to any one of claims 1 to 3,
An IP telephone terminal characterized in that when the operation of the IP exchange apparatus is normally recovered from an abnormality, the operation of the IP external line operation unit is stopped and the operation of the IP extension operation unit is activated. The IP telephone terminal according to any one of claims 1 to 4, wherein
Means for detecting whether the operation of the IP exchange device is normal or abnormal,
An IP extension interface monitoring unit for detecting the presence or absence of a control signal from the IP extension control unit of the IP switching device;
The IP external line control unit of the IP exchange apparatus includes either or both of the presence / absence of an IP packet transmitted / received and an IP external line interface monitoring unit that outputs a predetermined confirmation signal to the IP external line control unit and detects a reaction thereof. An IP telephone terminal characterized by that. The IP telephone terminal according to claim 5, wherein
The IP external line interface monitoring unit
An IP telephone terminal, wherein a predetermined monitoring command for requesting a reply is sent to an IP outside line control unit of the IP exchange apparatus, and the presence or absence of the reply is detected. The IP telephone terminal according to claim 5, wherein
The IP external line interface monitoring unit
An IP telephone terminal characterized in that a telephone call is made from the IP external line operating unit by the telephone number of the IP external line control unit of the IP switching apparatus, and the reaction is detected. The IP telephone terminal according to claim 5, wherein
The IP external line interface monitoring unit or the IP external line interface monitoring unit is
An IP telephone terminal characterized in that a telephone call is made from the IP extension operation unit using the telephone number of the IP external line control unit of the IP switching apparatus, and the reaction is detected.

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