JP2003143316A - Communication system and communication method by integrating pstn service and ip communication service, and apparatus and processing method used for them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To warrant the QoS of voice communication on an IP communication service and to avoid the effect of crosstalk or the like and a speed limit in the case of simultaneously conducting a plurality of communications by the multiplexing technology. SOLUTION: In the PSTN service for a closed area IP network 7 and a PSTN network 10, the voice communication service quality is warranted by making communication only with a private IP address for the closed area IP network 7. In an IP communication service for the closed area IP network 7 and a global IP network 12, high-speed transfer is made between a communication terminal accommodation device 1 in the closed area IP network 7 and a PSTN subscriber line signal converter 2 by eliminating the speed limit to avoid the effect of crosstalk or the like by the multiplex technology equivalent to that for the Internet. The band is warranted for encapsulated packets through the PSTN to ensure the communication quality of the PSTN.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a PSTN service using an existing subscriber line and an IP (Internet Pro).
The present invention relates to a communication system in which communication services are integrated, and more particularly to a communication system and a communication method by an integrated method capable of QoS guarantee of voice communication in addition to the existing PSTN service, and an apparatus and a processing method used therefor.

[0002]

2. Description of the Related Art In a conventional communication service, in order to realize a plurality of communications on a single physical transmission line, a plurality of communications are performed using a multiplexing technique. ADSL (As
ymmetric Digital Subscrib
er Line: PSTN (Public Swi) in the case of an existing twisted pair copper telephone line)
The analog voice communication data of the tched Telephone Network (public switched telephone network) service is carried at a low frequency, and the IP datagram data of the IP data communication service is carried at a high frequency multiplexed with the low frequency.

In this case, the low frequency is affected by the influence of high frequency noise, etc., and the QoS (Quality) of the analog voice data of the PSTN service carried at the low frequency is received.
of Services) may not be guaranteed. Therefore, in order to realize higher speed transfer, it is necessary to use a high frequency carrier having a higher frequency, but it is limited to a high frequency within a range that can guarantee a low frequency QoS,
Higher speed transfer is difficult.

In the conventional PSTN service analog voice communication, one contract line is used, and even in the case of the digital (ISDN) system, Bch × 2 lines,
Two lines can be used as equivalent to a telephone line by using one Dch, but it is possible to provide communication at the same time using each line, but only to provide an equivalent number of telephone lines, and to increase the number of terminals that can communicate at the same time. Requires additional lines.

On the other hand, in a voice communication service such as an IP telephone which is a voice communication service using an IP address datagram, it is difficult to guarantee the same QoS as that of the PSTN service which is the same voice communication service. Further, in the conventional communication service, since the PSTN service and the IP communication service are configured in different networks from each other, the integrated service of the PSTN service and the IP communication service is not provided.

[0006]

As described above, in the voice communication on the conventional IP communication service, it is difficult to guarantee the QoS and to guarantee the same QoS as the voice service in the PSTN. Further, conventionally, in order to provide a communication service using a communication multiplexing technology, there is a limit to the speed in order to eliminate the influence of crosstalk that occurs when a plurality of communication are realized at the same time. It was

Therefore, an object of the present invention is to solve these conventional problems and to provide a closed IP network system, a PSTN network, and a global IP using each device in the closed IP network and an existing subscriber line.
An object is to provide an integrated communication service system and communication method configured using a network. Another object of the present invention is to use Q in voice communication on an IP communication service.
QoS guaranteed and QoS equivalent to PSTN voice service
PS that can guarantee the security and eliminate the influence of crosstalk that occurs when multiple communications are realized at the same time.
Closed IP by integrating TN service and IP communication service
An object of the present invention is to provide a network system, a communication method, and a device and a processing method used therefor.

[0008]

In order to achieve the above object, in the closed IP network system by integrating the PSTN service and the IP communication service of the present invention, the communication terminal accommodation device (1) and the PSTN are used by using the existing subscriber line. The service quality of voice communication is guaranteed by communicating with a private IP address only in a closed IP network composed of a transmission line physically connected to the subscriber line signal conversion device (2) on a one-to-one basis. Moreover, in the IP communication service between the closed IP network and the global IP network, the device (1) in the closed IP network is used.
(2) A new integrated method that enables high-speed transfer without speed limitation that was carried out to eliminate the effects of crosstalk by the same multiplexing technology as the Internet and integrates PSTN service and IP communication service Providing communication services.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The principle and embodiments of the present invention will be described in detail below with reference to the drawings. (Principle) FIG. 1 shows the IP communication service and PSTN of the present invention.
It is a system configuration diagram showing a principle of a communication service based on a service integration method. In FIG. 1, an in-home device and an in-station device (exchange office) are connected via an existing subscriber line 4, and in the in-station device, a PSTN service communication terminal 6 and an IP data communication terminal 5 are connected to a communication terminal accommodating device 1 to close the area. The IP network 7 is formed. In the intra-station device, the PSTN subscriber line signal conversion device 2 is provided with the PSTN service providing exchange 9 and the IP conversion device 3.
Are connected. The PSTN service providing exchange 9 is a PS
The TN network 10 is formed, and the PSTN network 10 has a PST.
The N service communication terminal 11 is connected. On the other hand, the IP conversion device 3 is connected to the global IP network 12, and the global IP network 12 is connected to the IP data communication terminal 13.

The closed IP network system of the present invention comprises a communication terminal accommodation device 1, a PSTN subscriber line signal conversion device 2, an IP conversion device 3 and an IP data communication terminal 5, and a PS
The system configuration accommodates the TN service communication terminal 6 (claim 2). The communication terminal accommodation device 1 in the closed IP network 7 of the present invention accommodates the PSTN service communication terminal 6 and the IP data communication terminal 5, and the existing subscriber line 4
High-speed transfer communication is possible between the PSTN subscriber line signal converter 2 and the PSTN subscriber line signal converter 2, and the communication terminal accommodating apparatus 1 uses the private IP address datagram routing function and data in the closed IP network 7. It has a conversion function and also holds a bandwidth guarantee function for PSTN services (claim 7).

The PSTN subscriber line signal conversion device 2 in the closed IP network 7 of the present invention comprises a communication terminal accommodation device 1 and a PST.
An IP converter 3 having a fixed private IP address different from that of the N subscriber line signal converter 2, and a PSTN network 10
Connected to the PSTN service-providing exchange 9 in the network and transmitting at a high transfer rate with the communication terminal accommodation device 1, and has a private IP address datagram routing function, a private IP address holding function, and a PST.
This is a device that holds a function of distributing N service data and IP network communication service data (claim 8).

To guarantee the quality of service in the PSTN service by the integrated system of the present invention, the communication terminal accommodation device 1, the PSTN subscriber line signal conversion device 2, the existing PSTN service providing exchange 9 and the PSTN network in the closed IP network 7 are guaranteed. By using it, the control of the bandwidth within a certain fixed time, which is the quality guarantee between the devices using the existing subscriber line, is guaranteed, and as a guarantee method, the transfer is performed using the fixed time tm1 at the fixed time Tm. By ensuring the bandwidth and guaranteeing the voice quality service, the conventional PST
Provides a quality of service guarantee for voice communication in combination with the N network. It is difficult for the conventional IP telephone to guarantee the service quality of voice communication, but the IP communication service and PSTN of the present invention are difficult.
In the integrated service communication service, the conventional PST
It is possible to guarantee the quality of voice communication service equivalent to N service (claim 5).

Communication terminal accommodating devices 1 and P in the closed IP network 7
The existing subscriber line 4 is used between the STN subscriber line signal conversion devices 2, and the global IP network 12 is used between the devices.
It is possible to perform transfer on a private IP network capable of transfer at a speed equivalent to the high-speed transfer in (4). P accommodated with the communication terminal accommodation device 1 in the closed IP network 7
The STN service communication terminal 6 and the IP data communication terminal 5 are
I and the PSTN service communication terminal 6 that can communicate at the same time
It is possible to increase the number of P network data communication terminals 5, and the respective communication terminals 5 and 6 are related to the respective communication terminals 5 and 6.
Communication between the two is possible and the conventional PSTN network 1
0 and the global IP network 12, it is possible to simultaneously communicate between the PSTN service communication terminal 11 accommodated in the PSTN network 10 and the IP data communication terminal 13 accommodated in the global IP network 12. Further, the present invention is characterized by accommodating one or a plurality of PSTN service subscriber lines provided by the PSTN subscriber line signal conversion device 2 in the closed IP network 7 (claim 6).

(Embodiment) (System Configuration) The configuration of an integrated communication service according to the present invention will be described in more detail with reference to FIG. Closed area I
Each device in the P network 7 includes a communication terminal accommodation device 1, a PSTN subscriber line signal conversion device 2 connected to the communication terminal accommodation device 1, an IP conversion device 3, and a communication terminal accommodation device 1.
And an IP data communication terminal 5 housed in the. In the communication from the PSTN service communication terminal 6 to the PSTN service communication terminal 11, the PSTN service communication terminal 6 accommodated in the communication terminal accommodation device 1 passes through the closed IP network 7 and the PSTN service providing exchange 9 in the PSTN network 10. And the PSTN service communication terminal 11 accommodated in the network 10 via the PSTN network 10
The TN service is provided, and similarly, communication from the PSTN service communication terminal 11 to the PSTN service communication terminal 6 is also possible.

In the communication from the IP data communication terminal 5 to the IP data communication terminal 13, the IP data communication in the closed IP network 7 is made via the IP conversion device 3 and the closed IP network 7 and is connected to the global network 12. Terminal 5 is a global I
Between the P network 12 and the accommodated IP data communication terminal 13, I
P communication service is performed, and similarly, the IP data communication terminal 13
Communication from the IP data communication terminal 5 is also possible. These are communication services by the integrated method of the PSTN service and the IP communication service using the existing subscriber line 4 according to the present invention.

(Transmission Route) FIG. 2 is a diagram showing a system configuration and a transmission route of the integrated system in the present invention. IP communication service and PST using the existing subscriber line of the present invention
In the communication service by integrating N services, closed area I
PS in the system configuration of the P network 7 and the PSTN network 10
The TN service is provided by the communication terminal accommodation device 1, the PSTN subscriber line signal conversion device 2, and the closed IP network 7 in the closed IP network 7.
Connected to the PSTN service providing exchange 9 via the PSTN service contract subscriber line 8, and the PSTN
One accommodated in the closed IP network 7 via the network 10,
Through a plurality of PSTN service communication terminals 6 and one or a plurality of PSTN service communication terminals 11 accommodated in the PSTN network 10, a PSTN service for guaranteeing voice quality service is performed.

In the IP communication service, the IP data communication terminal 5 accommodated in the communication terminal accommodating device 1 in the closed IP network 7 is connected to the communication terminal accommodating device 1 in the network 7 and P.
Existing subscriber line 4 between STN subscriber line signal converter 2
Via the IP conversion device 3 via the global IP network 1
It is possible to perform high-speed IP communication with the IP data communication terminal 13 accommodated in the network 12 by connecting to the network 2. These are the PST with the PSTN network 10 in the closed IP network 7 using the existing subscriber line 4 according to the present invention.
It is a communication service in which the N service and the IP communication service with the global IP network 12 in the closed IP network 7 are integrated.

In the integrated transmission method of the present invention, as shown in FIG. 2, only the IP method is used for transmission in the closed IP network 7, and the private IP address datagram is used for routing. On the other hand, transmission of the PSTN service is performed by connecting the PSTN service communication terminal 6 accommodated in the communication terminal accommodation device 1 and the closed IP network 7 to the PTN service.
P accommodated in the PSTN network 10 via the STN network 10
PS on the transmission path to the STN service communication terminal 11
Providing TN service. In that case, the PSTN communication data (P-IP, voice) shown in the figure is transmitted. The IP communication service is transmitted via the IP data communication terminal 5 in the closed IP network 7, the closed IP network 7 and the IP conversion device 3, and via the global IP network 12 to the IP accommodated in the network 12.
The IP communication service is provided by transmitting with the data communication terminal 13. In the case of IP communication data, the IP communication data shown in the figure (P-IP, L2TP, PPP, G-IP, data)
Sent by. This enables transmission by integrating the PSTN service and the IP communication service.

(Closed IP network system according to claim 2)
The closed IP network system according to the present invention comprises a communication terminal accommodating apparatus 1, a PSTN subscriber line signal converting apparatus 2, an IP converting apparatus 3, and an IP data communication terminal 5 accommodated in the communication terminal accommodating apparatus 1. . Among these devices, the IP data communication terminal 5 has a function of holding a private IP address and a private IP address datagram, a function of storing global IP address data in the global IP address datagram, and the like, and also performs IP conversion. The device 3 has a conversion function of a private IP address datagram and a global IP address datagram, a routing function of a global IP address datagram and a private IP address, and a correspondence management function of a private IP address and a global IP address. . Each of the above-described devices is a closed IP network system that holds private IP address datagrams, configures the closed IP network 7, and enables IP communication by the private IP address datagram.

(High-speed transfer of IP communication according to claim 4)
In high-speed transfer in the IP communication service of the communication services according to the integrated method of the present invention, in the IP communication between the communication terminal accommodation device 1 and the PSTN subscriber line signal conversion device 2 in the closed IP network 7, the existing It is possible to perform IP communication between the devices 1 and 2 using the subscriber line 4, maintain quality service of voice service, and perform IP communication at a high transfer rate capable of supporting high speed transfer of the Internet.
High-speed transfer is possible with the communication terminal accommodating device 1PSTN subscriber line signal conversion device 2.

The conventional ADSL service uses low frequency (PS
Information is transferred by superimposing a high frequency (IP communication) on TN: analog), but with the speeding up of the transfer of IP communication, the low frequency (PSTN: analog) is affected by the high frequency (IP communication). Since crosstalk occurs and the quality of the low frequency cannot be guaranteed, there is a limit of the transfer rate that is limited to a high frequency (IP communication) that does not affect the quality of the low frequency. On the other hand, in the present invention, since the transfer is performed only by the IP communication (high frequency) without using the communication by the superposition method, the crosstalk that has occurred in the communication using the multiplexing technique at the low frequency and the high frequency. It is possible to provide a high-speed transfer IP communication service that is not affected by the above and has no limitation on the high-frequency carrier frequency.

Further, even in the ISDN line, a high transfer rate of IP communication is possible, and in a communication service in which the PSTN service and the IP communication service are integrated, the communication terminal accommodation device 1 and the PSTN subscriber line signal conversion device 2 are connected. In between, it is possible to realize a closed IP network system that enables a high transfer rate by IP communication. For example, the protocol between the in-home device in the home and the accommodation device in the station is I
Unify to P and IP-encapsulate PSTN (analog and ISDN) signals. That is, in the past, in ADSL, two frequency bands for PSTN and data transfer were used. However, in the present invention, this is only one frequency band, so the speed can be increased without considering interference with other frequency bands. Will be possible. For a packet encapsulating the PSTN, the bandwidth is guaranteed to ensure the PSTN communication quality.

(Processing in the closed IP network according to claim 6)
In the closed IP network 7, the IP data communication terminal 5 in the closed IP network 7 and the PSTN service communication terminal 6 accommodated in the communication terminal accommodating device 1 are conventionally used in a one-to-one communication line. According to the invention, it is possible to increase the number of communication terminals of the IP data communication terminal 5 and the PSTN service communication terminal 6 that can simultaneously communicate using the existing subscriber line 4, and the PSTN subscriber in the closed IP network 7 The line signal conversion device 2 uses the PSTN service contract subscriber line 8 provided by the PSTN service providing exchange 9 in the PSTN network 10.
It is possible to accommodate one or more.

(Processing of Communication Terminal Accommodation Device) FIG. 3 is a functional block diagram of the communication terminal accommodation device according to the present invention.
Using the existing communication method from the communication terminals (PSTN service communication terminal and IP data communication terminal), a signal is transmitted between the accommodation terminal interface unit 21 of the communication terminal accommodation device 1 and each of the communication terminals 5 and 6. At this time, when the transmitted signal is PSTN, Qo of the communication terminal accommodation device 1
The information transmitted by PSTN communication is transferred to the S assurance unit 25, and each functional unit (accommodation terminal interface unit 21, private IP address datagram conversion unit 22, private I) in the communication terminal accommodation device 1 is transferred from the QoS assurance unit 25.
The P address datagram routing unit 23 and the existing subscriber line interface unit 24) are instructed to perform the process of guaranteeing QoS.

The transmitted signal is converted into a private IP address datagram by giving an IP address using the existing method in the private IP address datagram conversion unit 22 of the communication terminal accommodating apparatus 1. At this time, the conversion to the private IP address datagram is performed as follows. Further, each signal is processed according to the QoS instruction from the QoS guaranteeing unit 25.

<When Signal is PSTN Communication (Analog Method)> The transmitted analog voice data is converted into digital voice data by using the existing method, a private IP address is given by using the existing method, and the private I
Convert to P-address datagram. <When Signal is PSTN Communication (ISDN Method)> A private IP address is added to the transmitted ISDN method D connection and Bch signal, and a private IP address datagram is formed using an existing method.

<When Signal is IP Communication> The transmitted private IP address datagram is not processed.
However, in claim 6, the transmitted IP datagram is a global IP address datagram using the global IP assigned by the existing method to the IP conversion device 3 configured by the IP data communication terminal with the existing function. It is assumed that the private IP address is given and the private IP address datagram is converted by using the existing method, but this is only one form of the present invention.

The present invention is not limited to this, and when the global IP address datagram is transmitted, the private IP address datagram converting unit 22 of the communication terminal accommodating apparatus 1 uses the existing method. IP address datagram conversion is performed. The private IP address datagram is sent to the private IP address datagram routing unit 23 of the communication terminal accommodating apparatus 1 as a private IP address.
It is sent from the private IP address in the address datagram to the corresponding device.

The corresponding private IP address is PS
In the case of the TN subscriber line signal conversion device 2 and the IP conversion device 3, the data is transferred to the existing subscriber line interface unit 24 in the communication terminal accommodation device 1, but in this case also, in the communication terminal accommodation device 1. Q from the QoS guarantee section 25 of
Each signal is processed according to the oS instruction. The transmitted private IP address datagram is sent to the existing subscriber line interface section 24 in the communication terminal accommodating apparatus 1 for QoS.
According to the QoS instruction from the guarantee unit 25, the existing subscriber line 4
The existing subscriber line interface unit 3 of the PSTN subscriber line signal conversion device 2 using a transmission system corresponding to the above transmission system.
Sent to 1. At this time, the transmission method of the existing subscriber line 4 is not limited in the present invention.

(Processing of PSTN Subscriber Line Signal Converter)
The private IP address datagram sent is
It is received by the existing subscriber line interface unit 31 in the PSTN subscriber line signal conversion device 2. At this time, if the transmitted signal is PSTN communication, the information that PSTN communication information has been transmitted is transferred to the QoS guarantee unit 35 of the PSTN subscriber line signal conversion apparatus 2, and the QoS guarantee unit 35 joins the PSTN subscriber. Each functional unit in the private line signal conversion device 2 (existing subscriber line interface unit 31, private IP address datagram routing unit 32, private IP address datagram conversion unit 33, PSTN service providing exchange / IP address conversion device interface unit 34) ) To the QoS instruction. The private IP address datagram is transferred to the private IP address datagram converter 33 in the PSTN subscriber line signal converter 2 via the private IP address routing unit 32 in the PSTN subscriber line signal converter 2.

(Processing of Private IP Address Translation Device) The transmitted private IP address datagram is subjected to the following process in the private IP address translation device in the PSTN subscriber line signal translation device 2. <When the private IP address datagram is PSTN communication (analog method)> The private IP address data (digital voice data) extracted using the existing method is converted into analog voice data using the existing method, and the PSTN subscriber The data is transferred to the PSTN service providing exchange / IP address translator interface section 34 in the line signal translator 2.

<When the private IP address datagram is PSTN communication (ISDN system)> The private IP address data (digital voice data: Dch signal, Bch signal) extracted by the existing method is used as it is for the PSTN subscriber line signal. The data is transferred to the PSTN service providing exchange / IP address translation device interface unit 34 in the translation device 2. <When private IP address datagram is IP communication> Received private IP address data (digital voice data: private IP address data)
Is not processed, and the data is directly transferred to the PSTN service providing exchange / IP address conversion device interface unit 34 in the PSTN subscriber line signal conversion device 2.

The transmitted PSTN communication data (analog system, ISDN system) is transmitted to the PSTN service providing exchange 9 via the PSTN service providing exchange / IP address translator interface section 34 using the transmission method in the existing PSTN communication service. To be done. After that,
The communication service is provided by performing the same processing as the existing PSTN communication service. The private IP address datagram in the case of IP communication data is PSTN
The private IP address datagram and the global IP address datagram are converted via the service providing exchange / IP address translation device interface unit 34 to the IP translation device 3 configured using the existing function, and the global IP network 12 is converted. Then, the communication service is provided by performing the same processing as the existing IP data communication service thereafter.

(Implementation of PSTN Service) FIG. 5 is a flowchart at the time of PSTN service showing an embodiment of the present invention. The PSTN service communication terminal 6 for transmitting the analog voice (in the case of ISDN, 64 Kbps B channel signal x 2 and 16 Kbps D channel signal x 1)
This) is transmitted to the communication terminal accommodation device 1 in the closed IP network 7 (step 101), and the communication terminal accommodation device 1 converts the received voice signal into a data signal and stores the private IP address and voice. The private IP address datagram is converted into a datagram (step 102), and xDSL (x Digital Subscriber) is transmitted via the existing subscriber line 4.
private line to the PSTN subscriber line signal conversion device 2 via the closed IP network 7 using the
The P datagram is transmitted (step 103).

The PSTN subscriber line signal converter 2 terminates the header of the private IP address of the private IP datagram received in step 103, converts the data into voice, and sends only voice (step 10).
4). The voice transmitted by the PSTN subscriber line signal conversion device 2 is transmitted via the PSTN service contract subscriber line 8 to the PS
The data is sent to the PSTN service providing exchange 9 connected to the TN service contract subscriber line 8 (step 105). PST
The PSTN service providing exchange 9 in the N network 10 performs the conventional PSTN service connection processing in the PSTN service providing exchange 9 on the voice received in step 105 (step 106), and passes through the PSTN network 10 and PS.
PSTN service communication terminal 11 accommodated in TN network 10
The audio is sent to (step 107). The PSTN data communication terminal 11 receives the voice, and the PST of step 101
The PSTN service is enabled with the N service communication terminal 6 (step 108).

In the voice service in which the PSTN service is the reverse, the PSTN service accommodated in the PSTN network 10 communicates with the PS accommodated in the communication terminal accommodation device 1 from the PSTN service communication terminal 11.
When the TN service communication terminal 6 provides the voice service, the reverse PSTN service can be performed by performing steps 101 to 108 in the reverse order.

(Implementation of IP Communication Service) FIG. 6 is a flowchart at the time of IP communication service showing an embodiment of the present invention. The transmitting IP data communication terminal 5 sends PPP to the IP conversion device 3 for authentication (step 201), and the global I assigned from the IP conversion device 3 is transmitted.
The unique global IP address of the P network is held (step 202). The IP conversion device 3 controls authentication,
A global IP address is assigned to the IP data communication terminal 5. Next, using the assigned global IP address,
The global IP address datagram is converted into a private IP datagram using L2TP and PPP, and the private IP datagram is transmitted (step 203).

The communication terminal accommodating apparatus 1 holds the received private IP datagram and routes and sends out the private IP datagram (step 20).
5). Next, the existing subscriber line 4 passes through the private IP address datagram (step 206). P
The STN subscriber line signal converter 2 sorts the received private IP address datagram into voice service data and IP communication data, holds the private IP address, and routes the private IP address datagram (step 207).

The IP conversion device 3 terminates the private IP address header of the received private IP address data, L2TP and PPP, and extracts the global IP address datagram from the private IP address datagram (step 208). Next, the retrieved global IP address is sent to the global IP network 12 (step 209). In the global network 12, it goes through the global IP address datagram (step 2).
10). The IP data communication terminal 13 uses the received global IP address datagram as the I in the closed IP network 7.
IP communication is performed with the P data communication terminal 5 (step 211).

In the reverse IP communication service, I
When sending global IP address data from the P data communication terminal 13 to the IP data communication terminal 5 in the closed IP network 7, steps 203 to 209 are processed in the reverse order, and the reverse IP communication is performed. Enable service.

(Quality service guarantee according to claim 5) P
The guarantee of the quality service of the voice service in the STN service is performed by the communication terminal accommodation device 1 and the PSTN subscriber line signal conversion device 2 which are connected to the existing subscriber line 4 of the closed IP network 7.
The PSTN service providing exchange 9 and the P in the PSTN network 10
With the configuration of the STN network 10, the unit time tm1 within a certain unit time Tm is always transferred to guarantee the QoS and to guarantee the quality of voice service.

Between the communication terminal accommodating apparatus 1 and the PSTN subscriber line signal converting apparatus 2, the guarantee of the band and the PS
Voice service quality assurance method of TN service is:
T, unit time: Tm (m = 1, 2, 3 ...) T = T
1 + T2 + T3 + ... Tm + ..., Unit time at T1 T1 = t11 + t12 + t13 + ..., The unit time at Tm is Tm = tm1 + tm2 + tm3 + ...
-+ Tmn + ..., and tm1 = tm2 = tm3 = ...
= Tmn = ..., etc., and the control method is T
Unit time t1n in 1 (T1 = t11 + t12 + t
13 + ... tln + ...), the communication between the communication terminal accommodation device 1 and the PSTN subscriber line signal conversion device 2 is always transferred at the first time slot of the unit time using the first tm1. And unit time Tm = tm
Also in 1 + tm2 + tm3 + ..., it is possible to secure and guarantee the band by transferring using tm1. Then, the quality service of the voice service is guaranteed, and in the PSTN service, the communication terminal accommodation device 1 and the PSTN subscriber line signal conversion device 2 and P in the closed IP network 7 are connected.
With the configuration of the STN service providing exchange 9 and the PSTN network 10, it is possible to guarantee the service quality of the voice service.

(Processing Function of Communication Terminal Accommodation Device According to Claim 7) The communication terminal accommodation device 1 in the closed IP network 7 of the present invention.
In the following, processing functions in the PSTN service and the IP communication service will be described below. The device 1 is
It accommodates one or a plurality of PSTN service communication terminals 6 and IP data communication terminals 5, and has an existing subscriber line 4
With the PSTN subscriber line signal conversion device 2 connected via the, it is possible to guarantee the bandwidth of the voice service and perform IP communication at a high transfer rate.

The processing function of the communication terminal accommodating apparatus is P
In the STN service, a PSTN service communication terminal accommodating function that performs an interface function including the PSTN service communication terminal 6, a voice-to-data conversion function and a data-to-voice conversion function, and a band for guaranteeing voice service quality are provided. There is a guarantee function and a processing function such as a distribution function between PSTN communication service data and IP communication service data. In the IP communication service, the IP data communication terminal accommodating function including the IP data communication terminal 5 and the interface function, and the closed IP network 7 are also included.
Has a routing function for a private IP address datagram in the inside and a processing function such as a function for allocating PSTN communication service data and IP communication service data.

(Processing function of PSTN subscriber line signal converter according to claim 8) PSTN subscriber line signal converter 2
Is a PSTN provided by the PSTN service providing exchange 9.
One or a plurality of service contract subscriber lines 8 can be accommodated, and band guarantee of voice communication service and high-speed transfer by IP communication can be performed between the communication terminal accommodation device 1 and the device 2. Is.

As the processing functions in the PSTN service and the IP communication service, in the PSTN service, the function of allocating the data of the PSTN communication service and the data of the IP communication service, the conversion of data to voice and the conversion of voice to data are performed. It has a conversion function, a bandwidth guarantee function for voice service quality, and a processing function such as a connection function with the PSTN service providing exchange 9. Also, IP
In the communication service, the private IP address datagram routing function in the closed IP network 7 and P
It has a processing function such as a function of distributing the data of the STN communication service and the data of the IP communication service.

(Program and recording medium for integrated service of PSTN service and IP communication service) FIGS. 5 and 6
If the operation flow according to the integrated method of the PSTN service and the IP communication service shown in FIG. 2 is converted into a program and the converted integrated operation program is stored in a recording medium such as a CD-ROM, a communication terminal accommodation device in a house or a station 1 or the computer to be the PSTN subscriber line signal conversion device 2 is loaded with this recording medium and the program is installed, or is downloaded to another computer via a network to cause the computer to execute the program. Therefore, the present invention can be easily realized.

[0048]

As described above, according to the present invention,
In the PSTN service, the communication terminal accommodation device and the PSTN that are physically connected one-to-one via the existing subscriber line
By transmitting an IP address datagram according to an agreement in a closed IP network configured by a subscriber line signal conversion device, QoS in voice data transfer which cannot be realized by voice data transfer on a conventional IP communication service
Guarantee is possible, and the existing PSTN service can be provided as usual by transferring to the PSTN service providing exchange and PSTN network through the PSTN subscriber line signal conversion device.

In the IP communication service, in a closed IP network composed of a communication terminal accommodation device via an existing subscriber line and a PSTN subscriber line signal conversion device, a speed which can support high-speed transfer in the global IP network is provided. Q of voice communication that could not be realized in the past while enabling data transfer
The oS guarantee is also possible. In addition, P via the closed IP network
By connecting the STN network and the global IP network, it becomes possible to provide a communication service that integrates the PSTN service and the IP communication service, which could not be realized in the past.

[Brief description of drawings]

FIG. 1 is an IP communication service and P showing an embodiment of the present invention.
FIG. 1 is a system configuration diagram of a communication service based on an integrated method of STN services.

FIG. 2 is a diagram showing a system configuration and a transmission path of the present invention.

FIG. 3 is a functional block diagram of a communication terminal accommodation device in FIG.

FIG. 4 is a functional block diagram of the PSTN subscriber line signal conversion device in FIG.

FIG. 5 is a flow chart at the time of implementing a PSTN service showing an embodiment of the present invention.

FIG. 6 is a flowchart when an IP communication service is carried out, showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Communication terminal accommodation device, 2 ... PSTN subscriber line signal conversion device, 3 ... IP conversion device, 4 ... Existing subscriber line, 5 ... IP
Data communication terminal, 6 ... PSTN service communication terminal, 7 ...
Closed IP network, 8 ... PSTN service contract subscriber line, 9 ...
PSTN service providing exchange, 10 ... PSTN network, 11
… PSTN service communication terminal, 12… Global IP
Network, 13 ... IP data communication terminal.

Continued front page    F-term (reference) 5K030 HC02 HC13 HD06 HD09 JA13                       JL08 JT01 JT02 KA01 KA05                       LB05                 5K033 CB09 DA06 EC03                 5K051 AA02 BB01 BB02 CC00 CC01                       CC02 CC04 GG02 HH18 JJ02                       JJ04 JJ14                 5K101 KK20 LL00 LL01 LL05 MM02                       NN21 PP03 RR05 SS07 SS08

Claims (12)

[Claims] 1. A communication service system by an integrated method using a closed IP network, a PSTN network, and a global IP network, comprising one or a plurality of PSTN service communication terminals and IPs.
A communication terminal accommodating device that accommodates a data communication terminal and performs routing of a private IP address datagram, and is connected to the communication terminal accommodating device through an existing subscriber line,
Private IP Address Datagram to Global I
A PS that connects an IP conversion device for converting to a P-address datagram and a PSTN service-providing switch and routes a private IP-address datagram.
A TN subscriber line signal converter and a PST connected to the PSTN service providing exchange and
An integrated communication system using an existing subscriber line having a PSTN network accommodating an N service communication terminal and a global IP network connected to the IP conversion device and accommodating an IP data communication terminal. 2. A communication terminal accommodating device accommodating the one or a plurality of IP data communication terminals, and a communication terminal accommodating device in the communication system according to the integrated method using an existing subscriber line according to claim 1. A closed area comprising an existing subscriber line to be connected, a PSTN subscriber line signal converter connected to the existing subscriber line, and an IP converter connected to the PSTN subscriber line signal converter. IP network system. 3. A PSTN communication method between a closed IP network and a PSTN network, wherein when a PSTN service subscriber line signaling system provided from a PSTN service providing exchange is an analog system, analog voice is converted into a private IP address datagram. When the PSTN service subscriber line signaling system is ISDN, the D channel signal and the B channel signal are converted into private IP address datagrams, and the private terminal address device and PSTN subscriber in the closed IP network are converted to the private IP address. A communication method for a closed IP network, characterized by routing between line signal conversion devices. 4. The communication method for a closed IP network according to claim 3, wherein a communication terminal accommodation device and a PS in the closed IP network are provided.
The TN subscriber line signal conversion device recognizes that it is a private IP address datagram, and the communication terminal accommodation device and PSTN subscriber line signal conversion device connected with the private IP address datagram by an existing subscriber line. A communication method for a closed IP network, which is characterized by high-speed transfer between networks. 5. A PSTN service QoS guarantee method between a closed IP network and a PSTN network, comprising: between a communication terminal accommodation device and a PSTN subscriber line signal conversion device connected by an existing subscriber line in the closed IP network; and In the PSTN service providing exchange connected to the PSTN subscriber line signal conversion device, the PSTN network is used to guarantee QoS in voice communication, and the communication terminal accommodation device and the PSTN subscriber line signal conversion device. , A first unit time t within a unit time Tm
By making sure to transfer to m1, Q that is equivalent to the PSTN network
QoS guarantee and QoS of existing PSTN service in the PSTN network.
S guarantee, and the closed IP network, PSTN network, and global I
A PSTN service QoS guarantee method, wherein the same QoS guarantee as that of the PSTN network is performed even in a communication service by an integrated method using a P network. 6. A PSTN accommodated in a communication terminal accommodation device in the closed IP network in an integrated communication method using a closed IP network, a PSTN network and a global IP network.
The service communication terminal and the IP data communication terminal in the closed IP network perform one or a plurality of simultaneous communications, and the PSTN service communication terminal and the IP data communication terminal are connected to each other without increasing the number of existing subscriber lines. It is possible to increase the number of terminals, a PSTN service communication terminal accommodated in the PSTN network, and an I accommodated in the global IP network.
One or a plurality of PSTNs are provided between the PSTN subscriber line signal conversion device and the PSTN service providing exchange in the case of providing one or a plurality of communication services with the P data communication terminal and the PSTN service. A communication method for a closed IP network, characterized by accommodating a service contract subscriber line. 7. A fixed private IP address in a closed IP network, accommodating one or a plurality of PSTN service communication terminals and IP data communication terminals, and being connected to the communication terminal accommodation device by an existing subscriber line. , Between the communication terminal accommodating device and the PSTN subscriber line signal conversion device having a fixed private IP address
Means for performing high-speed transfer of communication service and bandwidth guarantee of voice service, and private voice for voice of the PSTN service communication terminal
A P-address datagram conversion means, a private IP address datagram routing means, a private IP address datagram PSTN service and IP communication service distribution means, and a QoS guarantee means in the PSTN service. Characteristic communication terminal accommodating device. 8. A means for performing bandwidth guarantee of voice service and high-speed transfer of IP communication service with a communication terminal accommodation device in a closed IP network, and a PSTN service contract subscriber line provided by a PSTN service providing exchange. Or a plurality of accommodating means, a connecting means for connecting to the PSTN service providing exchange in the PSTN network, a converting means for a private IP address datagram and a voice signal, a routing means for a private IP address datagram, and a private IP address data. A PSTN subscriber line signal conversion apparatus, comprising: a PSTN communication service and an IP communication service distribution unit in the gram; and a QoS guarantee unit in the PSTN service. 9. The communication terminal accommodation device in the closed IP network is P
When data is transferred between the STN subscriber line signal conversion device and the existing subscriber line, the protocol between the two is set to IP.
A communication processing method for a communication terminal accommodating device, characterized in that high-speed transfer is performed by using a single frequency by unifying the signal and the analog and ISDN signals by IP encapsulation. 10. The PSTN subscriber line signal conversion apparatus in the closed IP network is a P provided by a PSTN service providing exchange.
Accommodates one or more STN service contract subscriber lines,
The private IP address datagram and the voice signal are converted, the private IP address datagram is routed, the PSTN communication service and the IP communication service in the private IP address datagram are distributed, and the QoS in the PSTN service is performed.
A communication processing method for a PSTN subscriber line signal converter, which guarantees and guarantees a bandwidth of a voice service and a high-speed transfer of an IP communication service with a communication terminal accommodation device in a closed IP network. 11. A communication program for causing a computer to execute the communication method, the QoS guarantee method, or the communication processing method according to claim 3. 12. A computer-readable recording medium on which the communication program according to claim 11 is stored.