KR100421357B1 - Voice message service system based home phoneline networking alliance - Google Patents

Abstract

The present invention relates to an HPNA-based call service system, and more particularly, to implement a HPNA-based intranet to directly make a call by matching a telephone number received from an external Internet with a pseudo IP assigned to the intranet. It is done. The present invention for this purpose is installed in each room, HPNA-based IP phones (460-1 to 460-N) for calls and data communication over an intranet or the Internet, and the HPNA-based IP phones (460-1 to 460) Main distribution board (MDF) 410 for integrated management of call and data communication in the (N), HPNA-based IP phone 461 installed in the information desk, the main distribution board 410, Proxy / DHCP server 451 ), The HPNA-based hub 420 for connecting the UMS server 452 and the main directory service server 453 to form an internal intranet, and the HPNA-based hub 420 to connect to an external data network. Router 440, the router 440, the HPNA-based hub 420, and an external telephone network are connected to each other by using voice and data to the HPNA-based IP phones 460-1 through 460-N. It comprises a HPNA-based voice gateway 430 for providing a service.

Description

VOICE MESSAGE SERVICE SYSTEM BASED HOME PHONELINE NETWORKING ALLIANCE}

The present invention relates to packet telephone network configuration, and more particularly, to a call service system based on HPNA (Home Phoneline Networking Alliance).

1 is a configuration diagram showing a telephone network in a general office, a building, a hotel, etc. as a first embodiment of the prior art, which is connected to a public telephone network (PSTN) and provides external telephone and internal telephone functions as shown in FIG. A private branch exchange (PBX) 110 and a main distribution frame (MDF) 120 for connecting a plurality of extension telephones to the private exchange 110 include external telephones and internal telephones. It will be configured to be possible.

And, Figure 2 is a second embodiment of the prior art, a configuration showing a telephone network in an apartment, etc., as shown therein, the main wiring board for connecting each telephone line to the public telephone network (PSTN) for an external voice call ( 210 and a main wiring board 220 for connecting each interphone line to the private exchange 230 for an internal voice call.

In this case, the interphone line is configured to be connected to the management / guard room through the private switch 230, it can be configured by adding a video camera cable for surveillance.

In addition, Figure 3 is a third embodiment of the prior art, a configuration diagram showing the connection of the IP phone and the PC (PC), as shown here, between the PC 310 and the IP phone 320 is an Ethernet jack (RJ) -45) and the UTP cable are connected to each other, and the IP phone 320 and the hub 330 are configured to be connected to each other using a jack (RJ-11) and a telephone line.

The IP phone 320 is supplied with power through the UTP cable, the hub 330 is HPNA Hub with Power.

However, the embodiments presented in the prior art have the following disadvantages.

1. In the first embodiment of the present invention, since only the telephone line is hypothesized, when a user wants to perform data communication, he or she must connect directly to an ISP or a company network using a modem. It is difficult to determine whether to connect to the ISP and the resulting cost is expensive, so there is a problem that the user avoids use due to the cost burden.

In the first embodiment of the present invention, if a data line is laid to satisfy a customer's data communication needs, a huge construction cost is required, and thus there is a problem in that the hotel operator is reluctant to construct itself.

2. In the case of the conventional second embodiment, as in the first embodiment, since only the telephone line is hypothesized, there is a disadvantage in that it cannot connect to the data network without using a modem.

In particular, the second embodiment of the present invention does not always use the interphone, but only as a telephone in the premises, and the disadvantage of having to spend unnecessarily high costs because it is necessary to install it together with an auxiliary line for a security camera or the like separately from the telephone line. have.

3. In the conventional third embodiment, the Internet phone uses the same UTP cable as the PC and the Ethernet jack (RJ-45), and uses a pair of UTP cables that do not send data for power supply. When plugged into a PC LAN card, there is a problem that causes the LAN card to fail.

Therefore, in order to solve the above conventional problems, the following alternatives will be required.

1. In order to solve the problem in the first embodiment of the related art, it is necessary to establish an intranet using telephone lines established in hotels and buildings, and connect this network with the Internet.

2. In order to solve the problems in the second embodiment of the present invention, it is necessary to configure the Internet using an interphone line or, in the case of a newly constructed apartment, to remove the interphone line and to provide an interphone function using the telephone line. .

3. In case of the third embodiment of the related art, an algorithm for distinguishing a PC LAN card from an IP phone is being developed to solve a problem that causes a malfunction when the Internet phone is plugged into a PC LAN card, but this may cause additional cost and user anxiety. Since the phone is divided into a jack (RJ-11) and a telephone line as in the prior art, the PC (PC) needs to be divided into a jack (RJ-45) and a UTP cable.

Accordingly, the present invention basically establishes an HPNA-based system for transmitting packet voice and data on a telephone line that is currently hypothesized in order to improve the conventional problems, thereby basically connecting to interphones, Internet phones, and general phones, as well as data. An object of the present invention is to provide an HPNA-based call service system invented to enable communication.

That is, an object of the present invention is to implement an HPNA-based intranet to make a direct call by matching a telephone number received from the outside Internet with a pseudo IP assigned to the intranet.

1 is an exemplary view showing the configuration of a telephone network as a first embodiment of the prior art;

Fig. 2 is an exemplary view showing the configuration of a telephone network and an interphone network as a second conventional embodiment.

3 is a diagram showing the configuration of a telephone network and an Internet network as a third embodiment of the prior art;

Figure 4 is an illustration showing an HPNA-based telephone network configuration for an embodiment of the present invention.

5 is a block diagram showing the configuration of a voice gateway in FIG.

6 is an exemplary diagram showing an internal signal flow of the voice gateway of FIG.

Figure 7 is an exemplary view showing a general telephone call method in an embodiment of the present invention,

7 (a) is a signal flow diagram of PCM data;

7 (b) is a flowchart illustrating a call process using PCM data.

8 is an exemplary view showing an xDSL call process according to an embodiment of the present invention.

8 (a) is a signal flowchart of an AAL2 type voice packet,

8 (b) is an operation flowchart showing a call process using an AAL2 type voice packet.

9 is an exemplary view showing a VoIP call in the embodiment of the present invention,

9 (a) is a signal flow diagram of a voice packet of a VoIP system

9 (b) is a flowchart illustrating a call process using a voice packet of a VoIP method.

FIG. 10 is a block diagram showing an address translation portion of a voice gateway in FIG. 4; FIG.

FIG. 11 is an exemplary diagram of an intranet address translation table in FIG. 10; FIG.

12 is a block diagram of a telephone network exemplified for explaining the call process in the present invention.

*** Explanation of symbols on main parts of drawing ***

410: main distribution board (MDF) 420: hub

430,480-1,480-2: Voice Gateway

440: router parts 451 to 453: server

460-1 to 460-N, 461: IP phone

The present invention provides an intranet-based telephone network system for providing a voice call and data communication using a telephone line in order to achieve the above object, between a main distribution board (MDF) and a server connected to a plurality of HPNA-based IP phones An HPNA-based hub that connects to an intranet, a router for accessing an external data network, the router, the HPNA-based hub, and an external telephone network are connected to each other, and voice and data are used as the HPNA-based IP phone. It is characterized by comprising a voice gateway based on HPNA to provide a call service.

The HPNA-based IP phone is characterized by having an HPNA interface to enable intranet or Internet connection through a hub.

The HPNA-based voice gateway will act as an address through NAT / PAT function in the intranet such as Real IP: Port Number coming from router, AAL2 CID coming from ADSL and PSTN or E1 / T1 phone number. It has an address translation table that can quickly match IP.

In addition, the service provider (telephone station, ITSP, etc.) providing the telephone service is charged according to the number of telephone numbers, the number of Real IP: Port Number, and the number of CIDs (Channel Identification), and the user pays for the service at the user side using the telephone service. It is characterized by.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Although the embodiment of the present invention can be applied to an apartment, an office, a building, a hotel, etc., it will be described on the assumption that it is applied to a large hotel having an existing telephone network.

4 is an overall configuration diagram of a system for an embodiment of the present invention, as shown therein, which is installed in each call room for an HPNA-based IP phone (460-1 to 460-) for call and data communication through an intranet or the Internet. N), a main distribution board (MDF) 410 for integrated management of call and data communication in the HPNA-based IP phones 460-1 to 460-N, and an HPNA-based IP phone installed in a reception desk or the like. 461), the HPNA-based hub 420 for configuring an internal intranet by connecting the main wiring board 410, the Proxy / DHCP server 451, the UMS server 452, and the main directory service server 453; A router 440 connected to an HPNA-based hub 420 to access an external data network, and the router 440, the HPNA-based hub 420, and an external telephone network are connected to the HPNA-based IP phone ( 460-1 to 460-N), HPNA-based sound to provide call service using voice and data It is configured to include a castle gateway 430.

The main wiring board 410 is configured by connecting a plurality of HPNA-based IP phones (460-1 to 460-N) by a telephone line as well as connecting the HPNA-based hub 420 for the interphone function.

The HPNA-based hub 420 connects the IP phones 461 and the voice gateway module 430 installed at the front desk by telephone lines, and provides a plurality of servers (Proxy / DHCP, UMS, Main Directory Service) for specific service functions ( 451 to 453 are connected by HPNA / Ethernet network.

The voice gateway 430 connects the router 440 connected to the Proxy / DHCP server 451 with a data line, connects the ATM switch unit 470 with an AAL2 trunking method, as well as a public telephone network (PSTN). ) To connect.

In addition, an ATM switch unit 470 for providing transmission paths of AAL2 and AAL5 voice packets, and a voice gateway 480-connected to a public telephone network (PSTN) and the ATM switch unit 470 to provide a voice call service. 1) 480-2 is provided on the telephone company side.

The HPNA-based devices basically use the IEEE 802.3 MAC protocol for the Ethernet method.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

In the embodiment of the present invention, the Proxy / DHCP server 451, the UMS server 452, and the Main Directory Service server 453 are provided in the HPNA-based hub 420 in order to provide specific services required by the guests. The functions provided in the respective servers 451 to 453 are as follows.

Although the Proxy / DHCP server 451 is physically connected to the Internet through a DHCP function, Real IP is assigned to a plurality of IP phones 460-1 to 460-N 461 that require various external accesses. It will provide faster internet access, security and filtering.

The UMS server 452 stores data such as an e-mail, a voice mail, a fax, and displays the data on a plurality of IP phones 460-1 through 460-N.

The main directory service server 453 serves to provide various services through the screens of the HPNA-based IP phones 460-1 to 460 -N.

In addition, the HPNA-based voice gateway 430 has an xDSL modem 511, an HPNA / Ethernet 512, and a telephone network (POTS, T1 / E1) connection unit 513, as shown in the block diagram of FIG. Network interface block 510 for connecting to an external telephone network, a CPU 521, an IEEE802.3 MAC 522, a DSP 523, and a memory 524. Voice gateway / router interface block 520 for performing signal processing.

The xDSL modem 511, the HPNA / Ethernet 512, and the telephone network connection unit 513 provided in the network interface block 510 are configured as follows.

The xDSL modem 511 supports both AAL2 and AAL5 virtual circuit (VC) connections and connects to the CPU 521 with a hardware interface such as Utopia or HDLC for each xDSL service provider and method.

In this case, when the packet of AAL2 is directly processed by the DSP 523, the xDSL modem 511 may be configured to have a direct interface with the DSP 523.

The HPNA / Ethernet 512 connects to the CPU 521 through the MII interface, and 10 base-2, 5 or T connects through the respective CPU interface.

The telephone network (POTS or T1 / E1) connection unit 513 connects to the DSP 523 through a serial TDM interface. Accordingly, the DSP 523 divides the voice and the signal and transmits them to the CPU 521, and the CPU 521 recognizes them through an appropriate driver and transmits them to the Telephony Gateway Module. do.

The CPU 521, the IEE802.3 MAC 522, the DSP 523, and the memory 524 included in the voice gateway / router interface block 520 are configured as follows.

The CPU 521 is a hardware driver for the function of the voice gateway, the AAL2 gateway module 610 as shown in FIG. 10, the Telephony gateway module 620, the IP gateway module 630 and 650, the intranet address translation module. (Intranet Address Translation Module) (640) as well as a router (Router) function for external access through a number of Real IP. Also, Time Generator is built in.

The IEEE802.3 MAC 522 is configured to be connected to the main distribution board (MDF) 410 through the HPNA-based hub 420.

The DSP 523 expands or compresses the voice according to the role of echo cancellation and compression rate used therein, and packetizes the data into an internal RTP payload format or outgoing formats.

The memory 524 plays a role in a general embedded system such as a buffer, initialization, or application program storage in voice and data transmission, and uses flash, CAM, SRAM, DRAM, SDRAM, and the like as necessary.

In addition, the voice gateway 430 configured as described above is given Real IP, and is connected to the HPNA-based IP phones 460-1 to 460-N and the IP phones 460-N using NAT / PAT function. (Pc) 462 provides and manages pseudo IP.

Here, Real IP generally means a general IP that can be externally accessed and must be distinguished from Pseudo IP, which is an internal dedicated IP generated by NAT / PAT function.

Accordingly, the voice gateway 430 1) a method of mutually converting a voice signal and a signal in the form of an AAL2 packet and mutually matching a public telephone number and a CID (Channel Identification) number in association with a next-generation telephone station (eg, CLEC) (AAL2). ), 2) Real IP: Connection with IP phone that is called by Port Number (VoIP), 3) Direct connection between general phone number and circuit connection type (POTS, T1 / E1) Perform.

That is, the voice gateway 430 operates between the network interface block 510 and the voice gateway / router interface block 520 as shown in the example of FIG. 6 so that three voice calls of AAL2, VoIP, and POTS or T1 / E1 are performed. An operation will be performed and described as follows.

1) AAL2 voice call, which uses a public telephone network, shows superior economic feasibility when customers need 4 to 16 lines compared to the current T1 / E1, and is the next generation telephone company that does not currently have a subscriber network. CLEC) prefers and adopts a lot.

In this case, AAL2 relay method, ie, Adaptation Layer, is selected as AAL2 through the xDSL modem 511 and connected to the telephone company using a Permanent Virtual Circuit (PVC) method. Each voice gateway 480-1 matches the channel identification (CID) in the AAL2 packet with the telephone number of the public telephone network to make a call with the general telephone.

2) VoIP calls can be divided into two types: AAL5 voice call and IP-based voice call.

First, the AAL5 type voice call method forms a virtual circuit (VC) similarly to AAL2 through the xDSL modem 511 and transmits and receives IP packets based on this.

In this case, the use of the AAL2 scheme means that one xDSL modem 511 is transmitted to different virtual circuits (VC) through the same telephone line and share bandwidth formed through one xDSL 511. Is logically a completely separate channel.

The xDSL modem 511 transmits IP packets based on AAL5 when the Internet is connected, and also transmits VoIP packets based on AAL5.

At this time, the voice transmitted based on the IP is sent to the Internet along with the data to the voice gateway 480-2 of the ITSP, and another voice AAL5 virtual circuit (VC) different from the data AAL5 virtual circuit (VC). ) May be directly transmitted to the voice gateway 480-2 of the ITSP.

Here, the address required for the call in VoIP can be an externally accessible IP and a port number of the upper layer, and the address translation is performed when the voice gateway 480-2 of the ITSP is connected to the public telephone network (PSTN). You can also give

In conclusion, voice call using VoIP has various application service capabilities.

In particular, it is possible to greatly activate a call service through a phone icon of a web page or a PC application during electronic commerce.

Second, the IP-based voice is called when the bandwidth of the xDSL modem 511 is full to send only AAL2 voice or when connecting to the Internet by a method other than the xDSL modem, and the Ethernet (or HPNA, PPP). This is because IP packets will be sent over the same layers and voice will be encapsulated in the upper layers of IP.

3) POTS line or T1 / E1 voice call is connected to the other party and general telephone network by direct line using the telephone number in use.

Here, POTS refers to a line connecting a general telephone network (PSTN) and subscribers, that is, a voice telephone line that follows a telephone line signaling system. It is to distinguish it from the meeting, T1 / E1.

By the way, in the present invention can be applied to all three of the above interface method, it is only necessary to support the interphone, Internet phone and regular phone, so that only 'AAL2 voice and VoIP interface' or 'VoIP and POTS line or T1 / E1 Only the voice interface.

In this case, an HPNA-based hub, which is an interface capable of interphone function, is required.

Therefore, the operation of each method will be described with reference to Figs.

1. First, a connection from a general telephone network to an internal HPNA-based hub 420, that is, an intranet, will be described with reference to FIG.

Voice and signals from the telephone network (POTS or T1 / E1) connection unit 513 are transmitted to the DSP unit 523 through the TDM interface.

The DSP unit 523 compresses / extends the echo according to a speech coding algorithm (primarily PCM) in which echo cancellation and input PCM or ADPCM data are used in the Internet.

However, the intranet uses pseudo IP, but since it is an IP environment anyway, the voice signal is converted into the RTP format and transmitted to the CPU 521 through the HPI.

The voice signal input into the CPU 521 is transferred to the Telephony gateway module 620 through a DSP hardware driver.

The Telephony gateway module 620 interprets (1) Telephony Signaling Information as a control packet of a protocol (SIP, H.323, MGCP, other protocols) used inside the intranet, and (2) packetized with RTP. The voice payload is prepared for delivery to the intranet.

Thereafter, the voice signal is transmitted to the intranet address translation module 640 and transmitted to the corresponding IP phones among the plurality of HPNA-based IP phones 460-1 to 460-N.

On the contrary, the call connection from the intranet to the external telephone network is performed in the reverse process. Since the external telephone network is POTS or T1 / E1, the DSP 523 converts the PCM format and transmits the data through the PCM interface.

2. And, referring to Figure 8 describes the connection process from the xDSL to the internal intranet as follows.

AAL2 voice and signaling at the xDSL modem 511 is delivered to the CPU 521 via the Utopia interface for the xDSL to CPU interface.

The voice signal is transmitted from the CPU 521 to the AAL2 gateway module 610 via an xDSL hardware driver.

The AAL2 gateway module 610 (1) interprets the AAL2 signal information into a control packet of a protocol (SIP, H.323, MGCP, etc.) used in the intranet, and (2) the AAL2 voice packet is passed through the DSP hardware driver to the HPI. Send it through the interface.

The DSP 523 decompresses / decompresses the echo cancellation and PCM / ADPCM data according to a voice coding algorithm (mainly PCM) used inside the intranet.

By the way, the intranet uses pseudo IP, but since the IP environment is anyway, the voice signal is converted into the RTP format and transmitted to the CPU 521.

The CPU 521 prepares to transmit the RTP payload entered through the DSP hardware driver to the intranet.

Thereafter, the voice signal is transmitted to the intranet address translation module 640 and transmitted to the corresponding IP phones among the plurality of HPNA-based IP phones 460-1 to 460-N.

On the contrary, the call connection from the intranet to the xDSL is performed in the reverse process. Since the external network is xDSL based, the DSP 523 is converted to the AAL2 format and transferred to the CPU 521 through the HPI.

3. In addition, the connection process from xDSL or Real IP to the internal intranet will be described with reference to FIG.

Voice and signaling with IP added on AAL5 of the xDSL modem 511 are transmitted to the CPU 521 through the Utopia interface for the xDSL to CPU interface.

The voice signal is transferred from the CPU 521 to the IP gateway module via the xDSL hardware driver.

The voice signal of Real IP is transmitted to the IP gateway module through the Ethernet hardware driver of the CPU 521, which is connected to the external network of Real IP and Ethernet / HPNA.

The IP gateway module (1) interprets the signaling information of VoIP protocols (SIP, H.323, MGCP, etc.) into control packets of protocols (SIP, H.323, MGCP, etc.) used inside the intranet. (2) IP packets are sent via the HPI interface via the DSP hardware driver.

The DSP 523 decompresses / compresses the echo cancellation and PCM / ADPCM data according to a voice coding algorithm (mainly PCM) used inside the intranet.

By the way, the intranet uses pseudo IP, but since the IP environment is anyway, the voice signal is converted into the RTP format and transmitted to the CPU 521.

The CPU 521 prepares to transmit the RTP payload entered through the DSP hardware driver to the intranet.

Thereafter, the voice signal is transmitted to the intranet address translation module 640 and transmitted to the corresponding IP phones among the plurality of HPNA-based IP phones 460-1 to 460-N.

On the contrary, the call connection from the intranet to xDSL or Real IP is performed in the reverse process. Since the external network is based on Real IP, the same RTP format is used.

By the way, the data packet processing in the process of the PC 462 connected to the hub port of the server 451 or the HPNA-based IP phone that the destination address can directly communicate with the outside when the xDSL or Ethernet, etc. In this case, the router unit provided in the CPU 521 processes this, and conversely, when going out, the router unit provided in the CPU 521 processes the IP packet according to a routing table generated by a routing protocol (RIP, OSPF, etc.). It will be forwarded. That is, a general router function is incorporated in the router unit provided in the CPU 521.

In addition, the intranet address translation module 640 performing the address translation for the call in the above process is the AAL2 gateway module 610 and the Telephony gateway connected to the external network as shown in FIG. It is connected between the module 620 and the real IP-based IP gateway module 630 and the pseudo IP-based IP gateway module 650 connected to the internal network.

Each of the modules 610 to 650 is provided in the CPI 521.

Accordingly, the intranet address translation module 640 configures an internal telephone network by changing addresses coming from the respective AAL2, Telephony, and IP gateway modules 610 to 630 into pseudo IPs. .

First, the Internet Assigned Number Authority (IANA) assigns pseudo IPs to be used for private content only, for example, experimental or intranet.

10.0.0.0-10.255.255.255 Class A

172.16.0.0-172.31.255.255 Class B

192.168.0.0-192.168.255.255 Class C

In addition, Real IP is a part which does not belong to the pseudo IP region, and is an IP which can be freely connected from the outside, and the intranet address translation module 640 is a pseudo-phone of an existing phone such as the intranet address translation table of FIG. (Pseudo) It assigns by matching external representative phone number, CID, Real IP: Port Number connected with IP.

Accordingly, when an address translation request comes from each module 610 to 630 or 650 to go to an HPNA-based IP phone or to make an external call, it is transmitted to the intranet address translation module 640.

At this time, the intranet address translation module 640 matches the external representative phone number, CID, and Real IP: Port Number connected with the pseudo IP of the phone existing in the intranet using the table of FIG. 630 or 650).

Thereafter, the intranet address translation module 640 enables a call using a matched address according to a predetermined protocol.

This call process will be described in detail with reference to FIG. 12 as follows.

1) A call between 'AAL2' and an HPNA-based IP phone 711-1 is a case where a call is made or received by AAL2, and an HPNA-based IP phone 711-1 with pseudo IP 192.168.1.10. ) And the AAL2 CID 7 matched in the intranet address translation table via a connection between the intranet IP 192.168.1.1 of the HPNA-based voice gateway 730.

In this case, between the HPNA-based IP phone 711-1 and the HPNA-based voice gateway 730, a protocol (SIP, H.323, MGCP, Prorietary Protocol, etc.) used inside the intranet is used, and AAL2 outside the xDSL interface. It is connected to the voice gateway 740-1 of the next-generation telephone station by trunking.

2) The call between 'POTS or T1 / E1' and the HPNA-based IP phone 711-2 is a case of a call with a general telephone, and an HPNA-based IP phone 711-2 with pseudo IP 192.168.1.11. ) And the telephone number '3497-8727' matched in the intranet address translation table via the connection between the intranet IP 192.168.1.1 of the HPNA-based voice gateway 730.

In this case, the protocol (SIP, H.323, MGCP, Proprietary, etc.) used inside the intranet is used between the HPNA-based IP phone 711-2 and the HPNA-based voice gateway 730, and is outside the POTS or T1 / E1 interface. The telephone number '3497-8727' is connected to the telephone company just like a regular telephone line.

3) Call operation between the Internet-based IP phone 712-1 and the HPNA-based IP phone 711-3 will be described below.

Here, it is assumed that the HPNA-based voice gateway 730 has a representative IP 211.219.70.12 to be able to contact the outside.

First, by using the function of NAT / PAT (RFC 1631, RFC 2663, etc.), the administrator designates the port number according to the application to connect to the outside from the internal intranet manually or programmatically. Will be mapped with

In this case, the number of port numbers (simultaneous call numbers) that can be used in connection with the voice gateway 740-2 of the ITSP for billing by the ITSP may be limited.

Of course, if the sound quality does not need to be guaranteed, it may come directly through the Internet to the data packet path.

At this time, the voice coming from the Internet-based IP phone 712-1 enters the voice gateway 730 through AAL5 of xDSL or HPNA / Ethernet connected to the outside.

Accordingly, it has a port number determined by an externally used protocol and uses the WAN IP of the HPNA-based voice gateway 730 as a destination address (for example, 211.219.70.12:1720, 211.219.70.12:50201, 211.219.70.12:50210). In this case, the connection is connected to the pseudo IP 192.168.1.12 of the HPNA-based IP phone 711-3 that matches the intranet address translation table.

In this case, between the HPNA-based IP phone 711-3 and the HPNA-based voice gateway 730, a protocol (SIP, H.323.MGCP, Proprietary Protocol, etc.) used inside the intranet is used. Pseudo IPs 192.168.1.12 and 192.168.1.1.

This will be described step by step.

Step 1) Call setup with the port number (for example, Call Setup in case of H.323; 211.219.70.12:1720, port number '1720' can be arbitrarily determined) determined by the protocol used externally.

Step 2) Update the intranet address translation table with port numbers (eg, 211.219.70.12:50201, 211.219.70.12:50210) defined arbitrarily or algorithmically in the call setup message.

Step 3) Notifies the counterpart phone 712-1 or the voice gateway 740-2 of the ITSP of the port number defined in the setup message.

Step 4) When connected with the WAN IP as the destination address (for example, 211.219.70.12:1720, 211.219.70.12:50201, 21.219.70.12:50210), the pseudo IP 192.168.1.12 matched to the intranet address translation table. It is connected to HPNA-based IP phone 711-3.

In this case, the protocol (SIP, H.232, MGCP, Proprietary Protocol, etc.) used inside the intranet is used between the HPNA-based IP phone 711-3 and the HPNA-based voice gateway 730. IPs are pseudo IPs 192.168.1.12 and 192.168.1.1.

Therefore, the call between the IP phones 711-3 and 712-1 can be performed by performing the above steps.

In the intranet address translation table of FIG. 11, the pseudo IP 192.168.1.12 is matched with the general telephone number '3497-8726', so that the HPNA-based IP phone 711-3 uses the 'POTS or T1 / E1' scheme. You can also talk on the phone.

4) The call process between the IP phone 712-2 and the HPNA-based IP phone 711-3 through the 'xDSL' or ITSP voice gateway 740-2 is as follows.

Calls between the IP phones 711-3 and 712-2 are made by the same process as in step 3). In this case, the ITSP having the managed IP network is different from the general Internet call in guaranteeing sound quality.

5) Calls between HPNA-based IP phones 711-1 to 711-N within the intranet can be used without restriction using pseudo IP and internal use protocols (SIP, H.323, MGCP, Proprietary Protocol, etc.). .

6) Data communication using Real IP is as follows.

PC (713), which is connected through the hub of HPNA-based IP phone (711-N), can be given Real IP through DHCP server 720. The IP is set as server: 211.219.70.2, PC: 211.219. Can be given as .70.20.

Of course, the server 720 or the PC 713 is set to 211.219.70.12, which is the WAN IP of the HPNA-based voice gateway 730, and forwarded by a router connected to the voice gateway 730 in a general routing method. (Forwarding).

However, a user who wants to use Real IP, which is expensive, as a pseudo IP, needs to list the WAN IP and port number of the HPNA-based voice gateway 730 in the intranet address translation table.

For example, if you want to use an HTTP application (Port Number: 80), you can match IP 211.219.70.12:80 with Pseudo IP 192.168.1.30 and set this pseudo IP in PC 713. There is no CID and phone number.

On the other hand, if a call is made in the same manner as above, a certain fee is charged per call, and the telephone service company considers the number of Real IP: Port Number sets, the number of AAL2 CIDs, and the number of phone numbers. Calculate the call cost.

As described in detail above, the present invention has an effect of improving the performance of the system by configuring an internal telephone network using pseudo IP to connect a plurality of internal telephone networks using limited Real IP.

In addition, the present invention does not require additional network configuration by using the existing telephone network has the effect that can reduce the cost burden.

Claims (12)

Intranet-based telephone network system for providing voice call and data communication using existing telephone lines, comprising: multiple HPNA-based terminals for providing voice and data services; A server for providing functions such as mail, fax, and Internet access, an HPNA-based hub means for forming an intranet by connecting the plurality of terminals and servers, and a router for accessing an external data network are provided. HPNA-based call, characterized in that comprises a HPNA-based voice gateway means for providing a voice and data call service to the HPNA-based IP phone is connected to the HPNA-based hub and external telephone network Service system. The HPNA-based call service system according to claim 1, wherein the plurality of terminals are HPNA-based IP phones to which pseudo IPs are granted. The HPNA-based call service system according to claim 2, wherein the HPNA-based IP phone is configured with an HPNA interface function to enable intranet or Internet connection through a hub. The method of claim 1, wherein the voice gateway means includes a VoIP method using Real IP as well as at least one of an AAL2 packet method or a general phone method using a telephone station to provide a call service between a plurality of IP phones and an external network. HPNA-based call service system characterized in that the configuration. 5. The method according to claim 1 or 4, wherein the voice gateway means comprises a network interface block for supporting the connection of the AAL2 or AAL5 type virtual circuit (VC) and the general telephone network interface for the voice call with the external network, and the internal intranet. HPNA-based call service system comprising a voice gateway / router interface block for matching and voice processing between pseudo IP and real IP granted to a terminal. The network interface block of claim 5, wherein the network interface block includes an xDSL modem providing an AAL2 and AAL5 type virtual circuit (VC) interface in an xDSL scheme, an HPNA / Ethernet providing an MII interface for an IP-based call service, and a telephone network ( HPNA-based call service system comprising a telephone network connection for providing a TDM interface in POTS or T1 / E1). The voice gateway / router interface block of claim 5, wherein the voice gateway / router interface block includes a CPU for matching between Real IP and pseudo IP, and a DSP for performing echo cancellation, voice compression / extension, and voice packet conversion. HPNA-based call service system characterized in that the configuration. 8. The CPU of claim 7, wherein the CPU comprises an AAL2 gateway module for connecting to an external network using AAL2 CID, a telephony gateway module for connecting to a general telephone network, and a real IP: port number. A first IP gateway module for connecting to an external network, a second IP gateway module for connecting to a terminal to which a pseudo IP assigned to an intranet is assigned, the gateway module for the AAL2, Telephony and the first IP, and the An intranet address translation module is connected between the second IP gateway modules to match Real IP: Port Number, AAL2 CID, and general telephone number with a pseudo IP of a terminal provided in the intranet. HPNA-based call service system characterized in that the configuration. [8] The HPNA-based call service system of claim 7, wherein the CPI further comprises a router function for accessing an external network using various Real IPs. 5. The method of claim 4, wherein the voice gateway means transmits / receives AAL2 type voice by connecting a virtual circuit to a telephone station using an xDLS modem when it is determined that the voice service is AAL2 packet type, and the voice gateway provided in the telephone station. HPAL-based call service system characterized in that for performing the process for matching the AAL2 CID (CID Identification) with the telephone number of the public telephone network. 5. The method of claim 4, wherein the voice gateway means transmits and receives an AAL5 type voice by connecting a virtual line to an Internet Information Service Provider (ITSP) using an xDSL modem when it is determined to be a VoIP type call service. HPNA-based call service system, characterized in that configured to perform a process for matching the Real IP of the AAL5 packet with the telephone number of the public telephone network in the provided voice gateway. 5. The method of claim 4, wherein the voice gateway means performs a process for mutual conversion between an external voice signal and TDM data, and a process for compressing / extending TDM data with respect to a transmitted / received voice signal when it is determined that the call service is a general telephone method. HPNA characterized in that it performs a process for the mutual conversion between the compressed / stretched TDM data and the RTP format voice packet, and transmitting the RTP format voice packet to the IP phone in the intranet by the internal protocol Based call service system.