KR20020071414A - Real time calling method of internet phone under ultra internet network - Google Patents

Abstract

The present invention provides a method for connecting an IP phone using a high speed internet network,

Initial registration step (P10) in which an Internet phone subscriber is assigned an IP from an Internet service provider (ISP) and an Internet phone telephone number and IP address are assigned to a gatekeeper,

A keep-alive step Q10 for generating a call waiting and periodic keep alive signal after initial registration,

Confirmation step (R10) to check whether the IP forced recovery of the IP, and

It is a method of maintaining a real-time connection to an Internet phone using a high-speed Internet network, including a new IP registration step (S10) to perform a keep-alive step by receiving a floating IP by performing a decision protocol.

Therefore, the present invention generates a keep-alive signal in the IP phone to immediately recognize the IP when forced recovery from the IP to be re-assigned IP so that the IP phone is always available to talk like a regular phone. Accordingly, by increasing the number of users of the IP phone, the user can save the telephone bill by always using the general telephone in the Internet environment where there is no fear of the telephone bill.

Description

Real time calling method of internet phone under ultra internet network}

The present invention allows IP to be directly used through Internet service provider (ISP) without using a computer, and generates a keep-alive signal periodically to generate a floating IP again when the IP is forcibly recovered. The present invention relates to a method for maintaining an Internet phone real-time connection using an ultra-high speed internet network that allows an IP phone to be used in the same state as a general telephone and a gatekeeper can perform a function with a small capacity.

In general, a mobile phone refers to a cellular phone or a PCS phone, and these call to the communication service company 40 and the communication service company 40 as shown in FIG. A wireless telephone 50 used by subscribers to communicate with each other and a packet service 31 for allowing a communication service provider 40 to connect with another service provider or a wired network should be provided as a basic configuration system.

On the other hand, the phone is being used while watching the other person's face as an image, which constitutes a perspective view of a web video phone 100 as shown in FIG. 2, and has a keyboard on the phone main body 11 having a key button 12. (13) is added, and the display 18 is added to arbitrary positions of the main body 11. The image pickup device 19 is added together to the display 18. The main body 11 further includes an Ish card 21 having an ID or the like stored in an Ish chip so as to recognize an ID of a telephone user, and an Ish card recognition unit 20 which inserts and recognizes an Ish card 21. It is done by

3 is a block diagram of the video telephone, an analog-to-digital converter 22 for converting a photographing output of an image pickup device or charge coupled device 19 into a digital signal, and a controller for controlling digitally converted image data. The display 18 for analog-converting and displaying an image through the control unit 23 and the control unit 23, an interface 24 for interfacing the digital output through the control unit 23 to the modem standard, and the interface 24 And a modem 6 for serial-to-parallel conversion so as to transmit to a private line 5 via a private line. Reference numeral 30 denotes an integrated service digital network (ISDN), and 31 denotes an internet network.

FIG. 4 is a system configuration diagram using the video phone. For example, the video phone 100 shown in FIG. 3 connected through a local area network (LAN) and a distributor for distributing each video phone 100 (FIG. HUB (Distributer) 110, a router (120) for interconnecting a plurality of communication networks between the distributor 110 and the Digital Server Unit (DSU) (130), and the digital service unit (130) Wide Area Network (WAN) 32 that is connected to the Internet network 31 through the server and the server 200 that is connected to the hub 110 to serve video calls through the Internet network 31. It consists of. The distributor 110, the router 120, and the digital service unit 130 are referred to as a type of Internet network access unit 140. The Internet network connection device 140, the video phone 100 and the server 200 forms a video phone system 150.

5 is a schematic explanatory diagram illustrating a control method between the video phone 100 and the server 200, and includes a server 200, a plurality of video phones 100 and a personal computer 300 subscribed to the server 200. Is done. The server 200 is divided into a gatekeeper 210, a web server 220, and a database server 230. In this state, if any subscriber of the video phone 100 inserts the Ish card 21 shown in FIG. 3 into the Ish card recognition unit 20, the recognition unit 20 recognizes the ID of the subscriber and the server. If the directory server 210 of the 200, and the directory server 210 requests a password or the like, the password is sent through the IC card 21 so as to know whether the subscriber. The directory server 210 manages the status (Log-On, busy, waiting, etc.) of the world video phone (Web video phone), and updates the information in a two-minute period (not particularly limited to the cycle) Tell the videophone. That is, the web server 220 performs a function as a server based on the search result of the gate keeper 210, and the data is read if necessary based on the data of the database server 230 and the gate keeper 210 is read. ) Function can be performed in real time.

FIG. 6 is a block diagram showing an example in which the video telephone is connected to a general wireless telephone system, and the mobile phone 50, which is a terminal, locates another wireless telephone through a service provider 40. Referring to FIG. Find and make the call possible. The service provider 40 is a base transceiver station (BTS) 41 providing a communication environment using a protocol according to a standard (Interleaf Standard 95) (IS-95) in each wireless telephone 50 and a wireless section. A base station controller (BSC) 42 which controls a radio link and a wired link through each base station 41 and performs a handoff function to maintain the continuity of a call while the subscriber is on the move; Switching station (MSW) which is in charge of switching of each base station center 42 and converting unit IWF to be connected to packet network 31, which is an internet network, through switching through switching station 43; Working Function (44).

In addition, an internet network connection device 140, which is a general router, is connected to the packet network 31 constituting the internet network, and when a video telephone 100 is connected through the internet network connection device 14, a call is made. Through the gatekeeper 210 to guarantee the quality state, the video telephone system 100 is connected to the video telephone system to enable voice and video calls. In the figure, although several video phones 100 are shown, additional connections may be used as subscribers are added. In such a system, the video telephones 100 allow video calls while viewing mutual images, but the wireless telephone 50 subscriber and the video telephone 100 subscribers can make calls only by mutual voice, which is unfortunate for the users of expensive video telephones. It is a reality.

On the other hand, the connection to the Internet via a general modem is connected to a computer main body 61, a monitor 62, a keyboard 63, a mouse 63-1, and a modem port of the main body 61 as shown in FIG. The telephone 64 connected to the P1, the institution telephone communication network 65 connecting to the other port P2 of the modem, and the gateway 66 connecting to the Internet network 31 via the institution telephone communication network 65; ), Including The network through the institutional telecommunication network telephone station 65 allows mutual calls through the Fiestien 67.

FIG. 8 uses the microphone 64-1 and the speaker 64-2 as a handset instead of the ordinary telephone 64 in the configuration of FIG. 7 and is connected to the microphone port M1 and the speaker port S1 of the main body 61. As shown in FIG. The computer telephone 64 'in one state is shown.

FIG. 9 is a network diagram illustrating a state in which an Internet phone user using the system as shown in FIG. 8 uses an Internet phone. Referring to FIG. 10, a computer (PC; main body 61, monitor 62, and Keyboard 63 collectively) If a user registers with the user management server 70 on the initial homepage of the user management server 70 and is authenticated (①), the Internet phone program from the user management server 70 Download and launch the program on the computer monitor screen (②) (T1). Based on the program displayed on the screen to enter the phone number of the other party as the program guides them to talk to each other (③) (T2). In this case, a call control is performed through the gate keeper 210, and the engine 66 provides a general telephone service network through the PSTN 67 in the gateway 66 by a call control through the gate keeper 210. It connects with the telephone communication network (exchange) 65 and ends when a call is completed (T3). In this case, the gateway 66 performs a function of converting the form of packet data used in the Internet network and the PTI data used in the PST.

FIG. 11 is a schematic diagram of a call system of a general web phone. FIG. 12 is a flowchart illustrating a flow process of the web phone. The web phone 100, which is a video phone, receives an authentication request and confirmation through a gatekeeper 21 to maintain call quality. The gatekeeper 210 separates a channel and uses a router to enable multiple access with the packet network 31. When using this, the subscriber of the web phone 100 enters the counterpart phone number for the web phone (P1). Then, the gatekeeper 210 confirms whether the calling web phone 100 is a customer stored in the gatekeeper 210 (P2) and then connects to the call through the router 140 through the packet network 31, which is an internet network. And end when the call ends (P3).

However, this method is a method of storing the IP address of the user (subscriber) in the gate keeper in advance and using it. Therefore, the capacity of the gate keeper is increased and the method of changing the IP in real time cannot be adopted. During the reset time, there was a problem that the quality of service was not high due to being offline for a while.

In addition, in case of Internet phone, it is required to register with ISP to use the high speed internet network.In order to increase the turnover rate of the phone, the operator adopts the method of forcibly recovering and redistributing the IP after a certain period of time so that the phone can be called at any time. There is a difficult situation.

The present invention is intended to solve this problem, an object of the present invention is to enable an Internet phone user to send and receive a call anytime and anywhere, such as a general telephone user.

To this end, the present invention is to use the IP directly from the Internet phone through the Internet Service Provider (ISP) without using a computer, and periodically generate a keep-alive signal to force the recovery of the IP of the IP again A floating IP is provided to increase the range of gatekeeper use and to perform functions with a small capacity.

1 is a system configuration diagram of a service provider for use of a general wireless telephone;

2 is a perspective view showing a state of use of a general video telephone,

FIG. 3 is a block diagram illustrating the video telephone of FIG. 2;

4 is a system configuration diagram showing a state of use of a general video telephone,

5 is a signal flow diagram illustrating a specific example of FIG. 4;

6 is a system configuration of a typical wireless telephone and a video telephone to implement a call,

7 is a configuration diagram of an Internet network connection through a modem of a general computer;

8 is an exemplary system configuration for using an Internet telephone through a computer.

9 is a system configuration diagram showing a network connection according to FIG. 8;

10 is a flowchart illustrating the flow of FIG. 9;

11 is a system configuration diagram showing a call of a web phone used in the present invention;

12 is a flowchart illustrating the flow of FIG. 11;

13 is a block diagram of the present invention,

14 is a flowchart of the present invention.

Explanation of symbols for the main parts of the drawings

31; Internet network 61; Body

62; monitor 63; keyboard

64; telephone 64 '; computer telephone

65; institutional telephone network 66; gateway

67; Public Switched Network (PSTN) 70; User Management Server

80; iPhone 81; Microcomputer

82; SDL modem 90; ISP

91; Subscriber modem centralization equipment 92; Remote access server

93; user management server 94; floating IP allocation server

95; hub 96; router

100; videophone 110; handset

120; image display unit 130; storage unit

132; management unit 140; router

150; controller 210; gatekeeper

That is, the present invention provides a method for connecting an IP phone using a high speed internet network,

Initial registration step in which an Internet phone subscriber is assigned an IP from an Internet service provider (ISP) and an Internet phone telephone number and IP address are assigned to a gatekeeper,

A keep-alive step of generating a call waiting and periodic keep-alive signal after initial registration;

A confirmation step of confirming whether the IPS is forcibly recovered

It is to provide a method for maintaining a real-time connection to an Internet phone using a high-speed Internet network, including performing a new IP registration step to perform a keep-alive step of receiving a floating IP by performing a protocol of the instantaneous confirmation.

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

FIG. 13 is an IP phone connection configuration according to an embodiment of the present invention using a high-speed communication network, which performs all internal control, periodically generates a keep-alive signal, and controls to allocate a floating IP when the IP is forcibly recovered from the IP 90 ( 81) and an IP phone 80 having an SDL modem 82 for simultaneously transmitting and receiving voice and digital data through a high-speed Internet network;

It is composed of the IP 90 to control the connection to the Internet network 31 by controlling the call connection through the IP phone (80). The Internet network 31 is connected to the IP address of the ISP subscriber and the gatekeeper 210 which stores the Internet telephone number.

The ISP 90 is a subscriber modem centralization equipment (DSLAM) 91 for centralizing the DSL modem 82 of the IP phone 80, which is the subscriber's Internet phone,

A remote access server (RAS) 92 for connecting the access data through the subscriber modem centralization equipment 91 to the Internet network 31;

A user management server 93 for managing user information through a remote access server 92;

A floating IP allocation server 94 for allocating an IP of a user through a remote access server 92;

A hub 95 connecting the servers 93 and 94,

It consists of a router 95 connecting the ISP 90 and the Internet network 31.

FIG. 14 is a flowchart of an embodiment of the present invention, in which an Internet phone subscriber is assigned an IP from an Internet service provider (ISP) 90 to receive an Internet phone telephone number and IP address from the gatekeeper 210. Referring to FIG. Initial registration step (P10),

A keep-alive step (Q10) for generating a call waiting and periodic keep alive signal after initial registration and sending it to the ISP 90,

Checking whether or not the forced recovery of the IP 90, if the forced recovery is not performed a keep-alive step (Q10), and if the forced recovery step (10) and the next step of performing a forced recovery;

A new IP registration step (S10) is performed to perform a keep alive step (Q10) by performing a DHCP procedure (a well-known protocol for dynamically allocating an IP) at the instant of confirmation. do.

The first registration step (P10) is a first step (P11) for the Internet phone (iPhone) first user to enter and set their ID and password,

After input, if the authentication is received from the user management server of the ISP 90 performs the next step, if not the second step (P12) to perform the first step (P11),

When the authentication is performed in the step P11, the floating IP is allocated from the floating IP server 94 of the IP 90 according to the DHCP protocol, and when the overflow occurs, the second step P12 occurs. To perform the third step (P13),

When the floating IP is allocated in the step P13, the fourth step P14 of registering the IP phone number and the IP address with the gatekeeper 210 is performed.

The new IP registration step (S10) is a step of allocating a floating IP by performing a protocol for the instantaneous confirmation of the IP in the confirmation step (R10) (S11), followed by the IP phone number and the new IP address In step S12, the registration and the keep-alive step Q10 are performed.

The keep-alive signal used in the present invention is selected to be used as a signal indicating that it is in use by including a subscriber's telephone number and IP address in a message field constituting a general communication protocol (H.323).

The operation of the present invention configured as described above will be described.

13, the algorithms shown in FIG. 14 are incorporated into the microcomputer 81 of the iPhone 80,

The first user of the IP phone 80 enters an ID and password (P11).

Then, the ID and password are authenticated from the user management server 93 via the DSL modem 82, the subscriber modem centralization equipment 91, and the remote access server 92 (P12). If authentication fails at this time, the first step P11 is repeated. Upon receiving the authentication, the IP phone 80 performs the MS protocol 81 in the microcomputer 81 to receive an arbitrary IP from the floating IP server 94 (P13).

On the basis of this, the step of registering the Internet phone telephone number and IP address to the gatekeeper 210 through the Internet network 31 is performed (P14) to complete the initial registration step (P10).

When the initial initial registration is completed, the IP phone 80 waits for a call (call) and the microcomputer 81 of the IP phone 80 periodically generates a keep-alive signal to the gatekeeper 210. If a certain time elapses, the gatekeeper (for example, forced recovery and redistribution of the IP on the IP 90 side or network overload and temporary network failure (e.g., disconnection of the terminal by disconnection or temporary interruption (2-3 minutes)) This is because the 210 cannot check the state of the iPhone 80. Therefore, in order to solve this problem, the present invention periodically generates a keep alive signal.

When the forced forced recovery and redistribution of the IP 90 occurs in the middle of generating the keep-alive signal (step R10), the microcomputer 81 performs a D.S protocol to allocate a new floating IP (step S10). (S11), the IP phone number and the new IP address is registered in the gatekeeper 210 to update the registration information of the IP phone (80). Therefore, the IP phone subscriber can always maintain the online state, so that transmission and reception can be performed at any time as in a normal telephone (step S12).

The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, the present invention generates a keep-alive signal in the IP phone and immediately recognizes the forced recovery from the IP so that the IP phone can be reallocated so that the IP phone can be always talked like a normal phone. Accordingly, by increasing the number of users of the IP phone, the user can use the regular phone in the Internet environment without worrying about the call fee to save the phone bill.

Claims (2)

In the method of connecting an IP phone using a high-speed Internet network, Initial registration step (P10) in which an Internet phone subscriber is assigned an IP from an Internet service provider (ISP) and an Internet phone telephone number and IP address are assigned to a gatekeeper, A keep-alive step Q10 for generating a call waiting and periodic keep-alive signal after initial registration, Confirmation step (R10) to check whether the IP forced recovery of the IP, and A method for maintaining a real-time connection to an Internet phone using a high-speed Internet network, comprising performing a new IP registration step (S10) to perform a keep-alive step by receiving a floating IP by performing a DC protocol. The method of claim 1, wherein the registration of the new IP (S10) is a step of allocating a floating IP by performing a protocol for the instantaneous confirmation of the IP in the confirmation step (R10) (S11), followed by an IP phone And registering a number and a new IP address and performing the keep-alive step (Q10) (S12).