JP2022072955A - Ip (internet protocol) phone, ip-pbx (private branch exchange), and ip-pbx system - Google Patents

Abstract

To provide an IP phone that can continue call processing and rescue processing when a communication partner and the IP phone cannot be connected during the call processing.SOLUTION: An IP phone 1 includes: a communication unit 2 that performs audio communication over the Internet protocol and receives a health check signal from an IP-PBX; and a health check unit 3 that stores call program information received by the health check signal. When unable to connect to the registered IP-PBX during call processing, the communication unit 2 continues the call processing using the program information stored in the health check unit 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to IP telephones, IP-PBX and IP-PBX systems.

In recent years, best-effort voice communication networks using the Internet and the like have become mainstream in voice call systems. Such a voice communication network is called an IP telephone system, and is being constructed as an IP-PBX system even in a local network such as a private telephone network.

In general, the IP telephone housed in the IP-PBX may be disconnected due to a failure of the IP-PBX during a conversation between the IP telephones, or the IP telephone and the IP-PBX may not be connected to TCP / IP. .. Even in such a case, if the IP telephones during the call are connected by TCP / IP, the call is maintained because the call is made by the P2P connection.

However, before the call is established, for example, if the IP-PBX network registered with the IP telephone is disconnected while the caller is dialing, or the power of the IP-PBX may be turned off. be. In these cases, the IP-PBX cannot continue the call state, and the IP telephone listens to the regulated sound.

For example, in order to make a call from the IP telephone A to the IP telephone B, the IP telephone A presses the dial number of the IP telephone B, and the IP-PBX is in the process of making a call. May cause the power to be cut off. In this case, the outgoing call processing performed by the IP-PBX cannot be continued, and the IP telephone A plays a restricted sound.

Patent Document 1 describes that the calling IP phone terminal A performs a health check with the called IP phone terminal B via the SIP server during a call with the called IP phone terminal B. Further, in Patent Document 1, when the SIP server cannot continue the call for some reason, the calling side IP telephone terminal A directly receives the called side IP without going through the SIP (Session Initiation Protocol) server. It is described that a health check is sent to the telephone terminal B to determine whether the call should be continued.

In other words, Patent Document 1 presupposes that a call has been established. For example, the calling IP phone terminal A wants to make a call to the called IP phone terminal B, and the calling IP phone terminal A dials. No consideration is given to the case where the calling IP telephone terminal A and the SIP server cannot be connected due to a power failure of the SIP server while the SIP server receiving the dialed number is performing some processing. .. In this case, it is presumed that the calling side IP telephone terminal A is in a state in which it cannot make a call, hears the restricted sound, and cannot establish a call.

Further, Patent Document 2 also assumes that a call is in progress, and does not take into consideration until the call is established.

For example, no consideration is given to the case where the IP telephone terminal A and the exchange cannot be connected due to a power failure of the exchange or the like while the exchange receiving the dialed number is performing some processing. In this case as well, it is presumed that the calling side IP telephone terminal A cannot make a call, hears the restricted sound, and cannot establish a call.

Japanese Unexamined Patent Publication No. 2009-89001 Japanese Unexamined Patent Publication No. 2019-036813

In this way, if the IP telephone and the IP-PBX cannot be connected during the call processing for the IP-PBX to establish a call, the IP telephone and the IP-PBX cannot be connected. There was a problem that it could not be relieved by listening to.

An object of the present invention is to provide an IP telephone that can continue the call processing and can be relieved when the communication partner and the IP telephone cannot be connected during the call processing.

The IP telephone of one embodiment includes a communication unit that performs voice communication on the Internet protocol and receives a health check signal from the IP-PBX, and a health check unit that stores call program information received by the health check signal. , If the connection with the registered IP-PBX cannot be established during the call processing, the communication unit uses the program information stored in the health check unit to continue the call processing.

The IP-PBX of one embodiment includes a communication unit that communicates with an IP telephone and SIP, and a call processing information receiving unit that performs call processing, and when the communication unit receives information regarding switching, call processing information. The receiver updates the information about call processing.

The IP-PBX system of one embodiment performs a health check between the IP telephone and the IP-PBX, and if the IP telephone cannot connect to the registered IP-PBX during call processing, the IP telephone is set. Call processing is continued using the program information at the time of health check.

According to the IP telephone of the present invention, when the communication partner and the IP telephone cannot be connected during the call processing, the call processing can be continued and the relief can be achieved.

It is a block diagram which shows an example of the IP telephone which concerns on Embodiment 1. FIG. It is a block diagram which shows an example of the IP telephone which concerns on Embodiment 2. FIG. It is a flowchart which shows an example of the operation of the IP telephone which concerns on Embodiment 1. FIG. It is a figure which shows an example of the content (call processing information) of the signal sent and received by the IP-PBX and the IP telephone in a health check. It is a block diagram which shows an example of IP-PBX which concerns on Embodiment 1. FIG. It is a flowchart which shows an example of the operation of IP-PBX which concerns on Embodiment 1. FIG.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of an IP telephone according to the first embodiment. In FIG. 1, the IP telephone 1 includes a communication unit 2 and a health check unit 3.

The communication unit 2 performs voice communication on the Internet protocol and receives a health check signal from the IP-PBX. If the IP-PBX that is registered cannot be connected during the call processing, the communication unit 2 continues the call processing using the call processing information and the memory information related to the call processing stored in the health check unit 3.

The health check unit 3 stores the program information received by the health check signal. For example, this program information is call processing information and memory information related to call processing.

As described above, according to the IP telephone of the first embodiment, when the communication partner and the IP telephone cannot be connected during the call processing, the call processing can be continued and the relief can be achieved.

(Embodiment 2)
FIG. 2 is a block diagram showing an example of the IP telephone according to the second embodiment. In FIG. 2, the IP telephone 10 includes a health check unit 11, a connection PBX list unit 12, a registration unit 13, a connection PBX unit 14, and a communication unit 15.

The health check unit 11 includes a condition monitoring unit 112 and a program information holding unit 113.
The condition monitoring unit 112 performs a health check with the IP-PBX.
The program information holding unit 113 holds the program information received in the health check.

The connection PBX list unit 12 is a list of IP-PBXs to which an IP telephone can be connected. Normally, a human manually registers the 1st connection destination PBX information 121 and the 2nd connection destination PBX information 122 in the connection PBX list unit 12.

In the registration unit 13, the IP telephone registers with the IP-PBX.
The connection PBX unit 14 holds the IP address information of the IP-PBX being registered by the IP telephone.
The communication unit 15 is a communication circuit that communicates with the IP-PBX.

Next, the operation of the IP telephone 10 will be described. FIG. 3 is a flowchart showing an example of the operation of the IP telephone according to the first embodiment.

First, in step S151, when the IP telephone is activated, the 1st connection destination PBX information 121 is read from the connection PBX list unit 12. Then, the information is written in the connection PBX unit 14. Then, the process proceeds to step S152.

Next, in step S152, the registration unit 13 performs registration on the 1st connection destination PBX registered in the connection PBX unit 14. Then, the IP telephone 10 starts up. Then, the process proceeds to step S153.

In step S153, the condition monitoring unit 112 performs a health check. Specifically, as a health check, status monitoring is performed with the 1st connection destination IP-PBX stored in the connection PBX unit 14. Then, the process proceeds to step S154.

In step S154, in the health check of the status monitoring unit 112, in addition to the information necessary for the general health check, the program information of what processing was performed in the IP-PBX and the memory information necessary for the processing are input. Received from IP-PBX. Then, these information are stored in the program information holding unit 113. Then, the process proceeds to step S155.

In step S155, the condition monitoring unit 112 transmits a signal to the 1st connection destination PBX in order to perform a health check with the 1st connection destination PBX. Then, the status monitoring unit 112 determines whether or not a response has come from the 1st connection destination PBX. If no response is received from the 1st connection destination PBX, the status monitoring unit 112 determines that the connection with the 1st connection destination PBX is not possible, and proceeds to step S156. If a response comes from the 1st connection destination PBX, the process proceeds to step S156.

In step S156, the information of the connection PBX unit 14 is updated to the 2nd connection destination PBX information 122. Then, the registration unit 13 reads out the connection PBX unit 14 and registers with the 2nd connection destination PBX information 122. At the time of registration, the IP telephone passes the program information holding unit 113 to the 2nd connection destination PBX information.

In step S157, call processing is continued.

By the above operation, the call processing can be continued when the IP telephone cannot connect to the communication partner.

Next, the contents of the signals transmitted and received by the IP-PBX and the IP telephone in the health check will be described. FIG. 4 is a diagram showing an example of the content (call processing information) of the signal transmitted / received by the IP-PBX and the IP telephone in the health check. As shown in FIG. 4, the program information 21 includes call processing name information 211 (function name, address, function argument), memory information 212 (memory name, address, value), and switching flag 23.

The call processing name information 211 (function name, address, function argument) contains the function name of the call processing, the address of the function, and the argument of the function that was executed immediately before the health check signal was transmitted in the IP-PBX. It has been saved.

Further, the memory information 212 (memory name, address, value) stores the memory information necessary for performing the call processing.

The switching flag 23 is usually 0. Then, when the program information 21 is updated, the switching flag 23 is set to 1. Specifically, when the call processing name information 211 (function name, address, function argument) or the memory information 212 (memory name, address, value) is rewritten, the switching flag 23 is set to 1.

Next, the IP-PBX that communicates with the IP telephone 10 will be described. FIG. 5 is a block diagram showing an example of the IP-PBX according to the first embodiment. In FIG. 5, the IP-PBX 30 includes a call processing information receiving unit 31 and a communication unit 32.

The call processing information receiving unit 31 receives the content (call processing information) of the signal transmitted / received by the IP-PBX and the IP telephone in the health check via the communication unit. The communication unit 32 is a communication circuit that communicates with an IP telephone and a SIP network.

The program information reading unit 311 reads the program information 21. In other words, the program information reading unit 311 reads the contents of the call processing name information 211 (function name, address, function argument) and the memory information 212 (memory name, address, value).

The switching flag determination unit 312 determines the content of the switching flag 23.

The processing continuation request unit 313 includes a memory update unit 3131 and a processing call unit 3132. The memory update unit 3131 reflects the memory information 212 (memory name, address, value) read by the program information reading unit 311 to the memory of the IP-PBX.

The processing call unit 3132 calls and executes the IP-PBX program from the read processing name information 211 (function name, address, function argument) in the program information reading unit 311.

Next, the operation of the IP-PBX30 will be described. FIG. 6 is a flowchart showing an example of the operation of the IP-PBX according to the first embodiment.

When the registration signal is received from the IP telephone in step S401, the call processing information receiving unit 31 receives the content (call processing information) of the signal transmitted / received by the IP-PBX and the IP telephone in the health check. Then, proceed to step S402.

In step S402, the program information reading unit 311 reads the program information 21 of. Specifically, the program information reading unit 311 reads the contents of the call processing name information 211 (memory name, address, value) and the memory information 212 (memory name, address, value). Then, proceed to step S403.

In step S403, the program information reading unit 311 reads the program information 21. Then, the switching flag determination unit 312 reads the contents of the switching flag 23.

In step S403, it is determined whether the switching flag 23 is 1 or 0. If the switching flag 23 is 1, proceed to step S404. If the switching flag 23 is 0, the process ends.

In step S404, the memory update unit 3131 updates the memory information of the IP-PBX from the memory information (memory name, address, value) 22. Then, proceed to step S405.

In step S405, the program information reading unit 311 executes the IP-PBX program from the read processing name information 211 (function name, address).

As described above, even if the IP telephone and the 1st connection destination PBX backup are disconnected during the call processing of the 1st connection destination PBX, the registration is performed with the 2nd connection destination PBX, and the program information and memory information are transferred to the 2nd connection destination at the time of registration. It can be handed over to the PBX. Then, the call processing can be continued to the 2nd connection destination PBX, and the relief can be achieved.

The above configuration is used for a system in which the IP-PBX is duplicated, such as the main switch IP-PBX (A) and the backup switch IP-PBX (B).

The IP telephone is registered with the IP-PBX (A), and the IP telephone performs some operation. If the IP-PBX (A) and the IP telephone cannot be connected during the call processing of the IP-PBX (A) in response to this operation, the IP telephone loses the registration of the IP-PBX (A). Re-register to the backup IP-PBX (B).

When the IP telephone re-registers with the IP-PBX (B), the program information and the memory information necessary for operating the program are inherited by the backup IP-PBX (B). Then, in the inherited IP-PBX (B) for backup, the program is called from the program information and the memory necessary for running the program is updated. With this update, the backup IP-PBX (B) continues the call processing without interrupting the call processing.

The program information at the time of registration and the memory information necessary for operating the program are collected from the IP-PBX (A) at the health check of the IP telephone and the IP-PBX (A), and the IP telephone is used. Hold at.

As a result, call processing can be performed on the backup node, so call processing does not end abnormally. Then, the backup exchange can perform continuous processing, and the call is established.

Next, the operation in which the IP telephone attempts to make a call to another IP telephone via the IP-PBX will be described.

For example, the IP telephone (A) dials the IP telephone (B) in an attempt to make a call, and the IP-PBX (A) that receives the dialed number receives the dialed number from the IP telephone (A) and the IP during the outgoing call processing. -If the connection of PBX (A) becomes impossible, the following will occur.

When the IP telephone is activated, the user somehow displays the IP-PBX (A) as the 1st connection destination PBX (121) and the IP-PBX (122) as the 2nd connection destination PBX (122) in the connection PBX list unit 12. B) is registered.

When the connection PBX list unit 12 is registered, the information of the IP-PBX (A) is read out from the connection PBX list unit 12 as the 1st connection destination PBX information 121. Then, the IP-PBX (A) is written in the connection PBX unit 14.

The registration unit 13 to which the connection PBX unit 14 is written performs registration to the IP-PBX (A) registered in the connection destination PBX 14. Then, it starts up as an IP telephone.

When the IP telephone is started up, the status monitoring unit 112 performs status monitoring, so-called health check, with the IP-PBX (A) stored in the connected PBX unit 14. The program information and memory information are received from the IP-PBX (A) by the health check. Then, these pieces of information are held in the program information holding unit 113.

For example, when the IP telephone (A) picks up the handset, the IP-PBX (A) operates a process for listening to a dial tone, for example, dialtone (). If a health check is performed during the processing of this dialtone (), the following information will be sent by the health check.

Program information 21
-Call processing name information 211 (function name daialtone (), address 0xEA1000, argument dial = 2000)
-Memory information 212 (memory name mwlens, address 0xEB2034, value 0x3a534,
Memory name mwfpc, address 0xEF1009, value 0x1f)

Then, 1 is set in the switching flag 23, and the program information 21 being processed by the IP-PBX (A) is transmitted to the IP telephone (A).

The received IP telephone (A) holds the program information 21 in the program information holding unit 113.

In this way, the IP telephone (A) receives the information being processed by the IP-PBX (A) and the necessary memory information in the health check. Then, the IP telephone (A) holds these information in the program information holding unit 113.

Here, if the IP-PBX (A) does not receive a response from the health check signal for some reason, the following operations are performed.

If no response from the health check signal arrives, the status monitoring unit 112 switches the connection PBX unit 14 from the 1st connection destination PBX information 121 of the connection PBX list unit 12 to the 2nd connection destination PBX information 122. Then, the registration unit 13 reads out the 2nd connection destination PBX information which is the connection PBX unit 14 and registers with the 2nd connection destination PBX.

Upon receiving the registration signal, the call processing information receiving unit 31 receives the content of the health check signal (call processing information).

The program information reading unit 311 reads the program information 21, and reads the contents of the following call processing name information 211 and the memory information 212.
Program information 21
-Call processing name information 211 (function name daialtone (), address 0xEA1000, argument dial = 2000)
-Memory information 212 (memory name mwlens, address 0xEB2034, value 0x3a534,
Memory name mwfpc, address 0xEF1009, value 0x1f)

When the program information reading unit 311 reads the program information 21, the switching flag determination unit 312 reads the content (1) of the switching flag 23.

When the switching flag 23 is 1, the memory update unit 3131 updates the memory information of the IP-PBX from the memory information (memory name, address, value) 22.

When the memory update is completed, the processing call unit 3132 executes the IP-PBX program dialtone () from the read call processing name information 211 in the program information reading unit 311 and is required for processing execution. Set the memory mwlens, address 0xEB2034, value 0x3a534, memory name mwfpc, address 0xEF1009, and value 0x1f, and continue processing.

As described above, even if the IP telephone (A) and the 1st connection destination PBX cannot be connected during the call processing on the 1st connection destination PBX, the registration is performed on the 2nd connection destination PBX and the operation is executed on the 1st connection destination PBX. Call processing can be continued.

In the above operation, in order for the IP telephone (A) to talk to the IP telephone (B), relief is provided in the case where the power of the IP-PBX is turned off while dialing the extension number of the IP telephone (B). can do.

Even in cases other than the case where the power of the IP-PBX is turned off, even if the IP telephone and the IP-PBX cannot be connected during the call processing by the IP-PBX (A) after dialing, it is relieved. can do. In addition, even if an incoming call arrives at the IP-PBX (A) from the other party and the connection with the IP-PBX (A) becomes impossible during the ringing ringing, it is possible to relieve the case. Further, even in the case where the telephone program is operating in the IP-PBX, such as during the hold sound operation or the transfer operation, the relief can be similarly performed.

As described above, according to the IP telephones, IP-PBX and IP-PBX of the first embodiment, when the IP-PBX goes down, the network goes down, and the IP-PBX and the IP telephone cannot be connected during the call processing. However, the caller can use it as usual without hearing the regulation sound.

In addition, the call processing includes dial operation, hold operation, transfer operation, etc., and while these call processing is being executed by IP-PBX, the IP telephone and IP-PBX cannot be connected. Even if it is, it can be relieved.

Each element described in the drawing as a functional block that performs various processing can be configured by a CPU, a memory, and other circuits in terms of hardware, and by a program loaded in the memory in terms of software. It will be realized. Therefore, it is understood by those skilled in the art that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof, and the present invention is not limited to any of them.

Also, the programs described above can be stored and supplied to a computer using various types of non-temporary computer-readable media. Non-temporary computer-readable media include various types of tangible recording media. Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs. Includes CD-R / W, semiconductor memory (eg, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)). The program may also be supplied to the computer by various types of temporary computer-readable media. Examples of temporary computer readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

Further, each element described in the drawing as a functional block for performing various processing may be composed of an electronic circuit, an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit).

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. For example, the number of IP-PBXs to be connected may be three or more.

1 Telephone 2, 15 Communication unit 3, 11 Health check unit 10 Telephone 12 Connection PBX list unit 13 Registration unit 14 Connection PBX unit 31 Call processing information reception unit 32 Communication unit 112 Status monitoring unit 113 Program information holding unit 121 1st connection destination PBX information 122 2nd connection destination PBX information 311 Program information reading unit 312 Flag judgment unit 313 Processing continuation request unit 3131 Memory update unit 3132 Processing call unit

Claims (5)

A communication unit that performs voice communication over the Internet protocol and receives a health check signal from the IP-PBX.
It is equipped with a health check unit that stores call program information received by the health check signal.
If the IP-PBX cannot be connected to the registered IP-PBX during the call processing, the communication unit is an IP telephone that continues the call processing using the program information stored in the health check unit. The health check unit
A condition monitoring unit that performs IP-PBX and health checks,
The IP telephone according to claim 1, further comprising a program information holding unit that holds the program information received in the health check. The IP telephone according to claim 1 or 2, wherein the program information is call processing information and memory information related to call processing. A communication unit that communicates with IP telephones and SIP,
It is equipped with a call processing information receiving unit that performs call processing.
When the communication unit receives information regarding switching, the call processing information receiving unit updates the information regarding call processing, IP-PBX. Perform a health check between the IP phone and IP-PBX
If the IP telephone cannot connect to the registered IP-PBX during the call processing, the IP telephone continues the call processing using the program information at the time of the health check.
IP-PBX system.

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