JP4275557B2 - Packet transmission quality measuring device, packet transmission quality measuring method, and program - Google Patents

Description

  The present invention relates to a packet transmission quality measuring apparatus, a packet transmission quality measuring method, and a program, and in particular, can effectively measure voice packet transmission characteristics (transmission quality) even when a NAT / firewall is present in an IP telephone network. The present invention relates to a packet transmission quality measuring device, a packet transmission quality measuring method, and a program.

  As a conventional measurement method, ITU-T recommendation G.I. 107, when measuring the total voice transmission quality due to the quality of the network, the terminal characteristics and the like are ITU-T recommendation G.107. The R value is calculated by measuring the characteristics of the packet flowing on the network using a predetermined value based on 107 (see, for example, Non-Patent Document 1).

  Currently, two types of methods, “active measurement method” and “passive measurement method”, are used as methods for measuring the characteristics of packets on the network.

FIG. 8 is a diagram for explaining the active measurement method.
In the active measurement method, a packet simulating a voice packet is transmitted from the active packet measuring instrument 301 at one end to the active packet measuring instrument 302 at the other end, and the voice transmission quality of the IP telephone network 1 is checked by looking at the characteristics of the packet at the time of arrival. This is a method for calculating.

FIG. 9 is a diagram for explaining the passive measurement method.
Method of capturing voice packet (call packet) of actual call between IP phone 31 and IP phone 32 by passive packet measuring device 401 and passive packet measuring device 402 and calculating voice transmission quality of IP telephone network 1 from the characteristics It is.

FIG. 10 is a diagram for explaining a problem of the conventional active measurement method.
In the active measurement method, the packet transmitted from the active packet measuring device 301 cannot be converted through the NAT (Native Adoress Translator), and therefore cannot pass through the NAT / firewall, and the packet is discarded. The packet does not reach the active packet measuring device 302.

  For this reason, in a network in which a NAT / firewall is introduced, the voice transmission quality of an IP phone can be measured only before the address conversion is performed by the NAT / firewall.

  If there is a firewall on the track, the measurement packet is regarded as an attack because it is not permitted, and it is discarded by the firewall. In order to solve these problems, NAT / firewall uses a fixed external-to-internal address translation method for all opposed packet measuring devices, while firewall measures from all packet measuring devices. It was set to allow the packet to pass. However, with this solution, the NAT / firewall settings must be changed each time the number of measurement points increases, and the boat (electronic circuit board) is opened to a plurality of packet measuring instruments. Is very dangerous.

Such problems do not occur with the passive measurement method, but since the measurement depends on the presence of the actual call, the measurement cannot be performed at regular intervals for the purpose of monitoring. It cannot be used in the measuring system.
ITU-T Recommendation G.107 “The E-model, a computational model for use in transmission planning”

  The present invention has been made to solve such a problem, and the object of the present invention is also in the case where a NAT / firewall is present on the IP telephone network to be measured for transmission characteristics (transmission quality) of voice packets. Another object of the present invention is to provide a packet transmission quality measuring device, a packet transmission quality measuring method, and a program capable of measuring the transmission quality of voice packets and improving the measurement accuracy of the transmission quality.

The present invention has been made to solve the above problems, and a plurality of packet transmission quality measuring apparatuses of the present invention are arranged in an IP telephone network, and measure packet transmission quality for measuring the transmission quality of voice packets in the IP telephone network. A measuring device, a call processing unit that performs a call to the opposite packet transmission quality measuring device and an incoming call processing from the opposite packet transmission quality measuring device, and a voice packet to the opposite packet transmission quality measuring device After receiving a measurement packet from a measurement packet transmission unit that sends out a simulated measurement packet and a packet transmission quality measurement device opposite to the measurement packet, adds information necessary for calculating the transmission quality of the voice packet, and measures the opposite packet transmission quality The measurement packet response unit sent back to the device and the measurement packet sent back from the measurement packet response unit of the opposite packet transmission quality measurement device A measurement packet receiving unit for receiving bets, based on the measurement packet received by the measurement packet receiving unit, characterized in that it comprises a quality information calculating unit for calculating the transmission quality of the voice packet.
As a result, even when there is a NAT / firewall in the middle of the route of the IP telephone network, the packet transmission quality measuring device performs call processing similar to that of the IP telephone, so that the transmission quality of voice packets can be measured by the active measurement method. You can do it.
In addition, the measurement accuracy can be improved by transmitting a measurement packet having the same header as the voice packet (in the conventional measurement packet, the communication of the IP packet used for the call is given priority, and other packets are postponed) In other words, the packet reception timing, the packet reception interval, and the packet reception order are different from the original ones, and the measurement accuracy may be reduced.
Furthermore, by allowing the NAT / firewall to recognize that the packet transmission quality measurement device itself is an IP phone, the end-to-end measurement can be performed from a location closer to the end IP phone, Measurement accuracy is improved.

Further, the packet transmission quality measuring device of the present invention receives information of a packet capture unit that acquires a voice packet that is a real call and a voice packet that is the same real call acquired by another packet transmission quality measuring device, And a packet comparison unit that calculates the transmission quality of the voice packet with the other packet transmission quality measuring device as compared with the voice packet that is the actual call obtained by the above.
Thereby, the active measurement method and the passive measurement method can be selected and used. Further, when a packet (actual call) can be captured, it is not necessary to bother to send a packet for measurement to the network, so that the load on the network due to packet measurement can be reduced.

In addition, the packet transmission quality measuring device of the present invention is used for a measurement that simulates a voice packet as a pseudo IP phone, and a calling unit that makes a call as a pseudo IP phone and connects to another IP phone. Acquired by a dummy packet transmitter for transmitting a dummy packet to the other IP phone, a packet capture unit for acquiring a dummy packet sent from the dummy packet transmitter to the IP telephone network, and another packet transmission quality measuring device A packet comparison unit that receives the information of the dummy packet and compares the dummy packet acquired by itself with the other packet transmission quality measurement device to calculate the transmission quality of the voice packet. To do.
Thereby, even when there is no packet (actual call), passive measurement using a dummy packet can be performed.

The packet transmission quality measuring method of the present invention is a packet transmission quality measuring method in a packet transmission quality measuring apparatus that is arranged in a plurality of IP telephone networks and measures the transmission quality of voice packets in the IP telephone network. A call processing procedure for making a call to the transmission quality measuring device and an incoming call processing from the opposite packet transmission quality measuring device, and a measurement packet for sending a measurement packet that simulates a voice packet to the opposite packet transmission quality measuring device After receiving the measurement packet from the opposite packet transmission quality measuring device, adding information necessary for calculating the transmission quality of the voice packet, and sending back to the opposite packet transmission quality measuring device, Measurement packets sent back by the measurement packet response procedure in the opposite packet transmission quality measurement device A measurement packet reception step of receiving bets, based on the measurement packet received by the measurement packet reception procedure, characterized in that it comprises a quality information calculation procedure for calculating the transmission quality of the voice packet.
As a result, even when there is a NAT / firewall in the middle of the route of the IP telephone network, the packet transmission quality measuring device performs call processing similar to that of the IP telephone, so that the transmission quality of voice packets can be measured by the active measurement method. You can do it.
In addition, the measurement accuracy can be improved by transmitting a measurement packet having the same header as the voice packet (in the conventional measurement packet, the communication of the IP packet used for the call is given priority, and other packets are postponed) In other words, the packet reception timing, the packet reception interval, and the packet reception order are different from the original ones, and the measurement accuracy may be reduced.
Furthermore, by allowing the NAT / firewall to recognize that the packet transmission quality measurement device itself is an IP phone, the end-to-end measurement can be performed from a location closer to the end IP phone, Measurement accuracy is improved.

  Also, a plurality of computer programs of the present invention are arranged in an IP telephone network, and call to a packet transmission quality measuring apparatus facing the computer in the packet transmission quality measuring apparatus for measuring the transmission quality of voice packets in the IP telephone network. , And a call processing procedure for performing an incoming call process from the opposing packet transmission quality measurement device, a measurement packet transmission procedure for sending a measurement packet that simulates a voice packet to the opposing packet transmission quality measurement device, and an opposing packet transmission After receiving the measurement packet from the quality measurement device, add the information necessary for calculating the transmission quality of the voice packet and send it back to the opposite packet transmission quality measurement device, and in the opposite packet transmission quality measurement device Measurement packet that receives the measurement packet sent back by the measurement packet response procedure And receiving procedure, based on the measurement packet received by the measurement packet reception procedure, a program for executing the quality information calculation procedure for calculating the transmission quality of the voice packet.

In the packet transmission quality measuring device of the present invention, two or more packet transmission quality measuring devices are arranged in the IP telephone network, and a call connection is made from one packet transmission quality measuring device to another opposing packet transmission quality measuring device, A measurement packet having the same header as that of the voice packet is transmitted to the other packet transmission quality measurement device facing the device. Then, the measurement packet sent back from the opposite packet transmission quality measuring device is received, and the transmission quality of the voice packet is calculated based on the sent back measurement packet.
As a result, even when there is a NAT / firewall in the middle of the route of the IP telephone network, the packet transmission quality measuring device performs call processing similar to that of the IP telephone, so that the transmission quality of voice packets can be measured by the active measurement method. You can do it.
In addition, the measurement accuracy can be improved by transmitting a measurement packet having the same header as the voice packet (in the conventional measurement packet, the communication of the IP packet used for the call is given priority, and other packets are postponed) In other words, the packet reception timing, the packet reception interval, and the packet reception order are different from the original ones, and the measurement accuracy may be reduced.
Furthermore, by allowing the NAT / firewall to recognize that the packet transmission quality measurement device itself is an IP phone, the end-to-end measurement can be performed from a location closer to the end IP phone, Measurement accuracy is improved.

Further, in the packet transmission quality measuring apparatus of the present invention, in addition to performing active measurement type packet measurement, the same voice packet (actual call) is captured by two packet transmission quality measuring apparatuses, and the captured voice packet is The transmission quality of the voice packet is measured by comparison in any measuring instrument.
Thereby, the active measurement method and the passive measurement method can be selected and used. Further, when a packet (actual call) can be captured, it is not necessary to bother to send a packet for measurement to the network, so that the load on the network due to packet measurement can be reduced.

Further, in the packet transmission quality measuring apparatus of the present invention, in addition to performing active measurement type packet measurement, the same voice packet (actual call) is captured by two packet transmission quality measuring apparatuses, and the captured voice packet is The transmission quality of the voice packet is measured by comparison in any measuring instrument. If the packet (actual call) cannot be captured, the packet transmission quality measuring device makes a call as a pseudo IP phone, is connected to another IP phone, and is a dummy packet (measurement) having the same header as the voice packet. Packet) to another IP phone. The dummy packet sent to the IP telephone network is acquired by itself, and information on the dummy packet acquired by another packet transmission quality measuring device is received, and the voice packet is transmitted in comparison with the dummy packet acquired by itself. Calculate quality.
Thereby, even when there is no packet (actual call), passive measurement using a dummy packet can be performed.

In the packet transmission quality measuring method of the present invention, two or more packet transmission quality measuring devices are arranged in the IP telephone network, a call connection is made from one packet transmission quality measuring device to another facing packet transmission quality measuring device, A measurement packet having the same header as that of the voice packet is transmitted to the other packet transmission quality measurement device facing the device. Then, the measurement packet sent back from the opposite packet transmission quality measuring device is received, and the transmission quality of the voice packet is calculated based on the sent back measurement packet.
As a result, even when there is a NAT / firewall in the middle of the route of the IP telephone network, the packet transmission quality measuring device performs call processing similar to that of the IP telephone, so that the transmission quality of voice packets can be measured by the active measurement method. You can do it.
In addition, the measurement accuracy can be improved by transmitting a measurement packet having the same header as the voice packet (in the conventional measurement packet, the communication of the IP packet used for the call is given priority, and other packets are postponed) In other words, the packet reception timing, the packet reception interval, and the packet reception order are different from the original ones, and the measurement accuracy may be reduced.
Furthermore, by allowing the NAT / firewall to recognize that the packet transmission quality measurement device itself is an IP phone, the end-to-end measurement can be performed from a location closer to the end IP phone, Measurement accuracy is improved.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration example of a measurement system using a packet transmission quality measuring apparatus (also simply referred to as “packet measuring device”) according to the present invention. In the packet measuring device of the present invention, a voice packet is transmitted over a NAT / firewall compatible with an IP phone by using an existing IP telephone network and performing an outgoing call processing for the opposite packet measuring device as a voice packet. The transmission quality can be measured.

  In FIG. 1, packet measuring devices 101 and 102 are a pair of packet transmission quality measuring devices for measuring the transmission quality of voice packets according to the present invention, and have the same configuration. Calls are made from the packet measuring device 101 to the packet measuring device 102, and from the packet measuring device 102 to the packet measuring device 101, and the transmission quality of the voice packet in the IP telephone network 1 is measured.

  The IP phone-compatible NAT / firewalls 21 and 22 are NAT / firewalls capable of communicating calls of the IP phones 31 and 32. The IP telephone exchange 41 is an IP telephone exchange that performs IP telephone call processing. This device is of an IP telephone network that has already been installed.

  With such a configuration, when performing active measurement using the packet measuring devices 101 and 102 of the present invention, a packet originated from the packet measuring device 101 is changed to “packet measuring device 101 → router 11 → NAT / firewall 21”. In order to pass through the route “IP telephone network 1 → NAT / firewall 22 → router 12 → packet measuring device 102”, the packet measuring device 101 performs the same call processing as the IP phone. As shown in FIG. 4, a measurement packet including an RTP header (IP phone header) and internal information (packet transmission time and other measurement information) is used for this call processing. .

  As a result, the packet measuring device 101 causes the NAT / firewalls 21 and 22 compatible with the IP telephone to recognize the measurement packet as a voice packet and reach the packet measuring device 102 on the ground. Similarly, the packet measuring device 102 causes the NAT / firewalls 21 and 22 compatible with the IP telephone to recognize the measurement packet as a voice packet and reach the packet measuring device 101 on the ground.

  In this way, in an environment where IP telephones communicate, it is possible to measure the transmission quality (transmission quality) of voice packets regardless of the presence / absence of NAT / firewall.

  Although FIG. 1 shows an example in which only two packet measuring devices 101 and 102 are installed, in practice, a plurality of devices are installed in various places on the IP telephone network 1 to measure transmission quality in a desired section. It can be so.

FIG. 2 is a block diagram showing a configuration example of a packet measuring device according to the present invention.
In the packet measuring device (packet transmission quality measuring apparatus) shown in FIG. 2, the call processing unit 111 and the measurement packet transmission unit 113 have a function of transmitting a measurement packet, and the measurement packet reception unit 115 and the measurement packet response unit 118 have a packet measurement function. It is.

  The call processing unit 111 performs outgoing calls to the opposite packet measuring device 102 and incoming calls from the opposite packet measuring device 102. The call processing unit 111 is connected to the incoming / outgoing call list database 112, and the outgoing call list 112 a in the incoming / outgoing call list database 112 stores a table of telephone numbers of call destination packet measuring devices and allows incoming calls. The list 112b stores the telephone number list of the packet measuring device on the opposite side as table information.

  The call processing unit 111 does not make a call to a call list other than the call list stored in the call list 112a, and restricts a call from a call other than those registered in the call permission list 112b.

  The measurement packet transmission unit 113 transmits the measurement packet to the opposite packet measuring device 102. In this case, the measurement condition setting database 114 in which the measurement conditions according to the measurement object and the location are recorded is referred to. The measurement condition setting database 114 stores specifications regarding the measurement packet. For example, the specifications include packet measurement interval (such as ○ minute interval), packet characteristics (measurement start time (○ hour × minute Δ second, etc.), Δ △ byte indicating packet length, packet transmission interval (XX ms) ), The number of packets, etc. A measurement packet is transmitted based on this specification information, and the measurement conditions to be measured may be changed according to the customer to be measured. In this case, for example, the setting condition table shown in Fig. 5 is recorded in the measurement condition setting database 114, and measurement is performed according to the measurement condition with reference to the setting condition table. It is possible to set conditions such as a packet measurement interval and a packet measurement time zone.

  The measurement packet receiving unit 115 receives the measurement packet sent back from the measurement packet response unit 118 of the opposing packet measuring device 102. The quality information calculation unit 116 calculates the characteristics of the measurement packet received by the measurement packet reception unit 115, calculates quality information, and records the obtained information in the measurement result information database 117.

  The measurement packet response unit 118 receives the measurement packet from the opposing packet measuring device 102, adds information necessary for quality information calculation, and sends it back to the opposing packet measuring device 102. For example, the reception time is added to the measurement packet transmitted from the packet transmission unit of the opposite packet measurement device, and the result is returned to the transmission source measurement device.

  The user interface unit 119 interacts with the user to start, stop, and change settings of the packet measuring device 101.

  FIG. 3 is a diagram showing a processing sequence between the functional units shown in FIG. 2, and shows an example using the SIP protocol. Hereinafter, the flow of the process will be described with reference to FIG.

  When the packet measuring device 101 is activated, a call connection process is started with the opposing packet measuring device 102. First, an INVITE request signal (session establishment request signal) is transmitted from the call processing unit (calling side) 111 to the IP telephone exchange 41 (arrowed line S1). The IP telephone exchange 41 transmits the received INVITE request signal to the NAT / firewall 22 (arrowed line S2). The NAT / firewall 22 transmits the received INVITE request signal to the call processing unit (destination side) 111a of the packet measuring device 102 (arrow line S3). Also, the IP telephone exchange 41 returns a Trying signal (response) to the call processing unit (calling side) 111 (arrow line S4).

  When receiving the INVITE request signal, the call processing unit (incoming side) 111a of the opposing packet measuring device 102 transmits a 200 OK signal (status code) to the NAT / firewall 22 (arrowed line S5). The NAT / firewall 22 transmits the received 200 OK signal to the IP telephone exchange 41 (arrowed line S6). The IP telephone exchange 41 transmits a 200 OK signal to the call processing unit (originating side) 111 of the packet measuring device 101 (arrowed line S7).

  The call processing unit (calling side) 111 that has received the 200 OK signal transmits an ACK signal (acknowledgment response signal) to the IP telephone exchange 41 (arrow line S8). The IP telephone exchange 41 transmits the received ACK signal to the NAT / firewall 22 (arrowed line S9), and the NAT / firewall 22 transmits the ACK signal to the call processing unit (called side) 111a (arrowed line S10). . Thereby, the call connection process is completed.

  When the call connection is completed, the measurement packet is transmitted from the measurement packet transmission unit 113 of the packet measurement device 101 to the opposite packet measurement device 102 (arrowed lines S11 and S12).

When the measurement packet response unit (destination side) 118a of the opposing packet measuring device 102 receives the measurement packet, it adds information on the reception time and returns to the measurement packet reception unit (outgoing side) 115 of the packet measurement device 101. Are transmitted (arrow line S13, S14). In the packet measuring device 101, the quality information calculation unit 116 compares the transmitted measurement packet with the returned measurement packet and measures the transmission quality.
Note that the above-described measurement process is repeated as many times as the number of opposed packet measuring devices.

  The packet measuring device 101 and the packet measuring device 102 are normally connected at all times and continuously measure the transmission quality. However, when the packet measuring device is in maintenance or the like, a session disconnection process is performed. In this disconnection process, a BYE signal (disconnect request signal) is transmitted to the IP telephone exchange 41 from the call processing unit (calling side) 111 of the call processing unit (calling side) 111 of the packet measuring device 101 (arrowed line S21). The IP telephone exchange 41 transmits the received BYE signal to the NAT / firewall 22 (arrowed line S22), and the NAT / firewall 22 sends the received BYE signal to the call processing unit (destination side) 111a of the packet measuring device 102 facing the received (Arrow line a23).

  The call processing unit (destination side) 111a that has received the BYE signal transmits a 200 OK signal to the NAT / firewall 22 (arrowed line S24), and the NAT / firewall 22 transmits the received BYE signal to the IP telephone exchange 41 ( The arrow-attached line S25) and the IP telephone exchange 41 transmit the received BYE signal to the call processing unit (originating side) 111 of the packet measuring device 101 (arrow-attached line S26). Thereby, the cutting process is completed.

  As described above, the packet measuring device 101 and the packet measuring device 102 are basically connected at all times. However, if the packet measuring device 101 is disconnected for some reason, the packet measuring device 101 performs call connection processing again at the measurement start time. Start.

  In the embodiment described above, an example of the packet measuring device that measures the transmission quality by the active measurement method has been described. However, the present invention is not limited to this, and a configuration using the passive measurement method together can be adopted.

  FIG. 6 is a diagram showing a second configuration example of a measurement system using a packet transmission quality measuring apparatus (also simply referred to as “packet measuring device”) according to the present invention. 201 and 202 are an active measurement method and a passive measurement method. A packet measuring instrument using the same symbols is shown, and the other reference numerals are the same as those in FIG.

  In the example shown in FIG. 6, the packet measuring device 201 and the packet measuring device 202 respectively use the same voice packet A (actual call) for the voice packet (actual call) used for a call between the IP phone 31 and the IP phone 32. And the transmission quality of the voice packet is measured by comparing the captured voice packet A with any of the packet measuring devices.

  Thereby, the band used for the test can be used effectively (utilized for actual calls). That is, it is not necessary to bother to send a packet for measurement over the network, so that the load on the network can be reduced.

  Further, when a packet (actual call) does not flow on the IP telephone network and the packet (actual call) cannot be captured from the IP telephone network, for example, the packet measuring device 201 makes a call as a pseudo IP telephone. Then, a call connection is established with the IP telephone 32, and a dummy packet having the same header as the voice packet is transmitted from the packet measuring device 201 to the IP telephone 32.

  Then, the packet measuring device 201 and the packet measuring device 202 capture the same dummy packet, and measure the transmission quality of the voice packet by comparing the captured dummy packet in any of the packet measuring devices.

  FIG. 7 is a diagram illustrating a configuration example of a packet measuring device using both the active measurement method and the passive measurement method. A packet measuring device 201 shown in FIG. 7 is obtained by adding a passive measurement function unit 210 to the packet measuring device 101 of the active measurement method shown in FIG.

  The calling unit 211 in the passive measurement function unit 210 makes a call as a pseudo IP phone and makes a call connection with another IP phone. The dummy packet transmission unit 212 transmits a dummy packet (measurement packet) having the same header as the voice packet to the IP telephone network as a pseudo IP phone.

  The packet capture unit 213 acquires an actual call voice packet on the IP telephone network or a dummy packet transmitted from the dummy packet transmission unit 212.

  The packet comparison unit 214 receives the information of the voice packet of the actual call acquired by the other packet measuring device 202 or the information of the dummy packet, and the packet acquired by the packet measuring device 201 itself and the other packet measuring device 202 The obtained packets are compared, and the transmission quality of the voice packet between the packet measuring device 201 and the packet measuring device 202 is calculated.

  Although the embodiments of the present invention have been described above, the packet measuring device (packet transmission quality measuring device) has a computer system inside. The process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing this program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  Although the embodiment of the present invention has been described above, the packet measuring device (packet transmission quality measuring device) of the present invention is not limited to the above-described illustrated examples, and does not depart from the gist of the present invention. Of course, various changes can be made.

  Since the present invention can measure the transmission quality of voice packets even when NAT / firewall is present on the IP telephone network, it has the effect of improving the measurement accuracy of the transmission quality of voice packets. The invention is useful for a packet transmission quality measuring device, a packet transmission quality measuring method, a program, and the like.

It is a figure which shows the structural example of the measurement system using the packet measuring device of this invention. It is a block diagram which shows the structural example of the packet measuring device of this invention. It is a figure which shows the process sequence between each function part shown in FIG. It is a figure which shows the example of a measurement packet. It is a figure which shows the example of a setting condition table. It is a figure which shows the 2nd structural example of the measurement system which uses the packet measuring device of this invention. It is a figure which shows the structural example of the packet measuring device of an active measurement system and a passive measurement system combined type. It is a figure for demonstrating an active measurement system. It is a figure for demonstrating a passive measurement system. It is a figure for demonstrating the problem of the conventional active measurement system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 IP telephone network 11, 12 Router 21, 22 NAT / firewall 31, 32 IP telephone 41, IP telephone switch 101, 102 Packet measuring device 111 Call processing part 112 Incoming / outgoing call list database 112a Outgoing call list 112b Incoming call permission list 113 Measurement Packet transmission unit 114 Measurement condition setting database 115 Measurement packet reception unit 116 Quality information calculation unit 117 Measurement result information database 118 Measurement packet response unit 119 User interface unit 201, 202 Packet measuring device 210 Passive measurement function unit 211 Calling unit 212 Dummy packet Transmission unit 213 Packet capture unit 214 Packet comparison unit

Claims (4)

A packet transmission quality measuring device that is arranged in a plurality of IP telephone networks and measures the transmission quality of voice packets in the IP telephone network,
A call processing unit that performs a call to the opposite packet transmission quality measurement device and an incoming call process from the opposite packet transmission quality measurement device;
A measurement packet transmitter that transmits a measurement packet that simulates a voice packet to the opposite packet transmission quality measurement device;
After receiving the measurement packet from the opposite packet transmission quality measurement device, add information necessary for calculation of the transmission quality of the voice packet, and send back to the opposite packet transmission quality measurement device,
A measurement packet receiving unit that receives the measurement packet sent back from the measurement packet response unit of the opposite packet transmission quality measuring device;
Based on the measurement packet received by the measurement packet receiver, a quality information calculator that calculates the transmission quality of the voice packet ;
A calling unit that calls as a pseudo IP phone and connects to another IP phone;
As a pseudo IP phone, a dummy packet transmitter for transmitting a dummy packet for measurement that simulates a voice packet to the other IP phone;
A packet capture unit for obtaining a dummy packet sent from the dummy packet transmission unit to the IP telephone network;
The information of the dummy packet acquired by another packet transmission quality measuring device is received, and compared with the dummy packet acquired by itself, the transmission quality of the voice packet with the other packet transmission quality measuring device is calculated. A packet transmission quality measuring apparatus comprising: a packet comparison unit . A packet capture unit that acquires voice packets that are real calls;
The information of the voice packet which is the same actual call acquired by the other packet transmission quality measuring device is received, and compared with the voice packet which is the actual call acquired by itself, between the other packet transmission quality measuring device The packet transmission quality measuring apparatus according to claim 1, further comprising: a packet comparison unit that calculates transmission quality of the voice packet. A packet transmission quality measuring method in a packet transmission quality measuring apparatus that is arranged in a plurality of IP telephone networks and measures the transmission quality of voice packets in the IP telephone network,
A call processing procedure for performing a call to the opposite packet transmission quality measuring device and an incoming call process from the opposite packet transmission quality measuring device;
A measurement packet transmission procedure for transmitting a measurement packet that simulates a voice packet to the opposite packet transmission quality measurement device;
After receiving the measurement packet from the opposite packet transmission quality measurement device, add the information necessary for calculating the transmission quality of the voice packet, and send back to the opposite packet transmission quality measurement device, a measurement packet response procedure,
A measurement packet receiving procedure for receiving the measurement packet sent back by the measurement packet response procedure in the opposite packet transmission quality measuring device;
Based on the measurement packet received by the measurement packet reception procedure, a quality information calculation procedure for calculating the transmission quality of the voice packet ;
A call procedure for making a call as a pseudo IP phone and connecting to another IP phone;
As a pseudo IP phone, a dummy packet transmission procedure for transmitting a dummy packet for measurement that simulates a voice packet to the other IP phone;
A packet capture procedure for obtaining a dummy packet sent to the IP telephone network in the dummy packet transmission procedure;
The information of the dummy packet acquired by another packet transmission quality measuring device is received, and compared with the dummy packet acquired by itself, the transmission quality of the voice packet with the other packet transmission quality measuring device is calculated. A packet transmission quality measurement method, comprising: a packet comparison procedure . A plurality of computers arranged in the IP telephone network and measuring the transmission quality of voice packets in the IP telephone network,
A call processing procedure for performing a call to the opposite packet transmission quality measuring device and an incoming call process from the opposite packet transmission quality measuring device;
A measurement packet transmission procedure for transmitting a measurement packet that simulates a voice packet to the opposite packet transmission quality measurement device;
After receiving the measurement packet from the opposite packet transmission quality measurement device, add the information necessary for calculating the transmission quality of the voice packet, and send back to the opposite packet transmission quality measurement device, a measurement packet response procedure,
A measurement packet receiving procedure for receiving the measurement packet sent back by the measurement packet response procedure in the opposite packet transmission quality measuring device;
Based on the measurement packet received by the measurement packet reception procedure, a quality information calculation procedure for calculating the transmission quality of the voice packet ;
A call procedure for making a call as a pseudo IP phone and connecting to another IP phone;
As a pseudo IP phone, a dummy packet transmission procedure for transmitting a dummy packet for measurement that simulates a voice packet to the other IP phone;
A packet capture procedure for obtaining a dummy packet sent to the IP telephone network in the dummy packet transmission procedure;
The information of the dummy packet acquired by another packet transmission quality measuring device is received, and compared with the dummy packet acquired by itself, the transmission quality of the voice packet with the other packet transmission quality measuring device is calculated. A program for executing a packet comparison procedure .

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