CN1479504A - Method for establishing network telephone connection - Google Patents

Abstract

The invention relates to a method for establishing a network telephone connection, which is used for a calling end and a receiving end to carry out conversation by point-to-point connection through the Internet; the calling end and the called end are respectively provided with an IP address of the Internet; the method comprises dialing the telephone number of the called end from the calling end, and establishing a telephone network connection with the called end; then, the calling end and the called end respectively transmit the IP addresses of each other to the opposite side through the telephone network connection line in the form of tone code; then, according to the IP addresses of the calling end and the called end, a point-to-point network telephone connection between the calling end and the called end is established so as to carry out network telephone conversation and interrupt the telephone network connection; the method of the present invention provides fast connection and can save the telephone expense of the user.

Description

How to set up an internet phone connection

technical field

The invention relates to a method for establishing an Internet telephone connection, in particular to a method for establishing an Internet telephone connection by using a telephone network connection to transmit Internet (Internet protocol, IP) addresses to each other in a tone code (tone code) manner.

Background technique

With the advancement of telecommunication technology, people can communicate by telephone without being restricted by long distances. The current telephone connection is established through the public switched telephone network (PSTN) system. Although the use of the telephone increases people's communication convenience, its charges are not cheap, especially the billing of long-distance calls or international calls.

Therefore, Internet protocol phone (IP phone/I-phone) technology came into being. VoIP uses the Internet or a computer network to replace part or all of the PSTN. Its main technology is to digitize the voice, compress it, and then transmit it to the receiver in the form of an IP packet (packet) on the Internet or computer network. end. The receiving end then decompresses the IP packet and restores it to voice, so as to perform the call function. In this way, Internet telephony can not only achieve the purpose of communication between the two ends, but also reduce call charges.

Please refer to FIG. 1 , which is a schematic diagram of a traditional network connection for establishing a VoIP connection. In FIG. 1 , the user uses a telephone 111 to dial, connects to the PSTN 101 via the VoIP switch box 113, and then transfers to the application service provider (Application Service Provider, ASP) 105. The ASP 105 digitizes the voice signal and sends it to the ASP 107 via the Internet 109 in the form of IP packets. Then the ASP 107 restores the IP packet to a voice signal, and connects to the PSTN 103 for transmission to the telephone 115 at the receiving end. In this way, the user can be provided with the Internet telephone conversation, and the expenditure of the telephone fee can be reduced.

Though the above-mentioned Internet phone communication technology has reduced the user's all-use PSTN connection cost in the past, it still has the following disadvantages:

(1) Users still have to bear the service fee of ASP 105 or 107.

(2) The connection is more complicated, and the ASP needs to be transferred to establish the connection; relatively, the connection takes a long time, especially when the ASP is busy, the connection service has to wait for a period of time.

Contents of the invention

The object of the present invention is to provide a method for directly establishing a network telephone connection in a peer-to-peer (P2P) network connection mode. This method can directly establish an Internet telephone connection without using the service provided by an additional ASP, which not only enables fast connection, but also saves the user's expenditure.

The purpose of the present invention can be achieved through the following measures:

According to the purpose of the present invention, a method for establishing an Internet telephone connection is proposed, which is used for a caller and a callee to communicate in a point-to-point connection via the Internet. The calling end and the called end have respectively a calling end IP address and a called end IP address of the Internet; in this method, the calling end dials a called end telephone number of the called end at first, and establishes an IP address with the called end. Telephone network connection. Then, the calling end and the called end transmit the IP address of the calling end and the IP address of the called end to the other party respectively through the telephone network connection in the form of tone code. Then, according to the IP address of the calling end and the IP address of the called end, a point-to-point Internet telephone connection between the calling end and the called end is established to carry out the Internet telephone call, and the telephone network connection is terminated. The steps of the method further include: the calling terminal stores the phone number of the called terminal and the corresponding IP address of the called terminal in a storage element of the calling terminal.

Then, when the calling end is connected to the called end again, the method further includes the following steps: the calling end dials the telephone number of the called end, and establishes a telephone network connection with the called end. At this time, the calling terminal simultaneously retrieves the IP address of the called terminal corresponding to the telephone number of the called terminal from its storage element. Immediately when the telephone network connection rings, the calling end establishes a point-to-point Internet telephone connection with the receiving end according to the IP address of the called end to carry out the connection call, and interrupts the incoming line of the telephone network.

The advantages of the present invention are as follows:

(1) The method of the present invention directly connects the calling terminal and the receiving terminal in a point-to-point network connection mode, without additional ASP services, and quickly establishes a point-to-point or point-to-point network telephone connection.

(2) The user does not need to spend additional ASP service fees, and only needs to bear the telephone network fee before the point-to-point network telephone connection to save the user's telephone expenses.

Description of drawings

FIG. 1 is a schematic diagram of a traditional network connection for establishing a VoIP connection.

Fig. 2 is a schematic diagram of a network connection for implementing the method of the present invention.

FIG. 3 is a flowchart of a method for establishing an Internet phone connection according to a preferred embodiment of the present invention.

FIG. 4 is a flowchart of a method for establishing an Internet phone connection between the calling end and the called end according to a preferred embodiment of the present invention.

101, 103, 201, 203: PSTN

104, 107: ASP; 109, 205: Internet

111, 115: Telephone; 113, 117: Internet phone transfer box

211: calling terminal; 213: communication device; 215, 225: Internet phone transfer device

217, 227: Specific implementation of storage elements

preferred embodiment

The present invention utilizes the network telephone switching device designed by the present invention to utilize the calling terminal and the receiving terminal to establish a telephone network connection while transmitting each other's Internet IP addresses with tone codes. Then directly establish a point-to-point (network connection) according to the IP addresses of the two, so as to provide the calling end and the called end to carry out Internet telephone conversations, to replace the telephone network connection.

Among them, the tone code is the identification code of a common dual-frequency phone, that is, after pressing the button on the dual-frequency phone, the phone will transmit different sound frequencies according to different symbols such as 1-9, #, and *. The tone code phone is also a dual-tone phone. The telephone using the tone code is first established with the help of the telephone network connection, and the IP addresses of the two ends are transmitted to each other by using the tone code. After both ends know each other's IP addresses, the way of voice communication between the two ends can be changed to be transmitted through the Internet.

Please refer to FIG. 2 , which is a schematic diagram of a network connection for implementing the method of the present invention. As shown in FIG. 2 , the calling terminal 211 uses the communicating device 213 to establish a telephone network connection with the communicating device 223 of the receiving terminal 221 through the telephone network 201 and the telephone network 203 , so as to allow the user to communicate. The telephone networks 201 and 203 may be public switched telephone networks, and the communication devices 221 and 223 may be telephones, but the present invention is not limited thereto.

The calling terminal 211 has an Internet telephone switching device 215 , which is connected to the telephone network 201 and the Internet 205 and coupled to the communication device 211 . The receiving end 221 also has an Internet telephone switching device 225 , which is connected to the telephone network 203 and the Internet 205 and coupled to the communication device 221 . The Internet telephone switching devices 215 and 225 are used to switch the connection between the communication device and the telephone network or the connection between the communication device and the Internet 205, and convert the corresponding voice data format, for example, the voice signal is passed through the data packet ( packet) form transmission. Moreover, the IP phone transfer device 215 of the calling end 211 has an IP address of the calling end, and the Internet phone transfer device 225 of the called end 221 has an IP address of the called end.

The Internet phone switching device 215 can at least be connected to the communication device 213 , the telephone network 201 , and the Internet 205 at the same time. After the calling terminal 211 and the receiving terminal 221 are equipped with the Internet phone switching devices 215 and 225 of the present invention, the calling terminal 211 and the receiving terminal 221 can use the method of the present invention to communicate. When the calling terminal 211 and the receiving terminal 221 are talking for the first time, after the calling terminal 221 completes the connection with the receiving terminal 221 through the telephone network 201 and 203, the receiving terminal 221 will use the form of the tone code to send the received terminal 221 The IP address of the network telephone switching device 225 of the calling terminal 221 is transmitted to the network telephone switching device 215 of the calling terminal 221, and the network telephone switching device 215 of the calling terminal 221 stores it. After receiving the IP address of the Internet phone switching device 225, the Internet phone switching device 215 can start to switch to making a call through the Internet. Therefore, the main function of the Internet phone switching device 215 is to use the telephone network to allow both parties to talk before knowing the IP address of the Internet phone switching device at the receiving end; address, the Internet call is used instead.

Please also refer to FIG. 3 , which is a flowchart of a method for establishing an Internet phone connection according to a preferred embodiment of the present invention. As shown in FIG. 3 , firstly in step 301 , the calling terminal 211 dials a telephone number of the receiving terminal 221 . In this way, a telephone network connection is established between the calling terminal 211 and the receiving terminal 221 via the connection of the network telephone switching device 215, the telephone network 201, the telephone network 203 and the network telephone switching device 225, for the connection between the two ends. The user makes a call. Next, go to step 303 .

In step 302, when the user at the receiving end 221 picks up the communication device 223 to establish a telephone network connection, the Internet phone switching device 215 at the calling terminal 211 uses the communication device 213 to connect via the telephone network in the form of a tone code The IP address of the calling terminal is transmitted to the called terminal 221, and the called terminal 221 is notified to return the IP address of the called terminal. At this time, the IP phone switching device 225 of the called end 221 will simultaneously transmit the IP address of the called end to the calling end 211 in the form of tone code. Wherein, the method of transmitting the IP address by using the tone code can be realized by setting the communication rules between the network phone switching devices. For example, in the agreement, it can be stipulated that "###" is used to represent the start of IP address transmission, "* is used to represent ".", or "#*#" is used to represent the end of transmission. The transmission method, It can be set to be sent automatically by the network phone switching device, but it can also be sent by the user pressing the phone button.

Next, in step 303, according to the IP address of the calling end and the address of the called end, a point-to-point Internet telephone connection between the calling end 211 and the called end 221 is established via the Internet 205 . When the connection is established successfully, the Internet phone switching device 215 and the Internet phone switching device 225 automatically disconnect the phone network connection. In this way, users at both ends can unknowingly interrupt the conversation of the telephone network connection and become a point-to-point network telephone connection. The connection formed by the telephone switching device 225. Next, go to step 304 .

In step 304 , the calling terminal 211 stores the phone number of the called terminal and the corresponding IP address of the called terminal in a storage element 217 . The receiving terminal 221 also stores a calling terminal telephone number of the calling terminal 211 and a corresponding calling terminal IP address in a storage element 227 of the receiving terminal 221 .

The purpose of this step is that when the calling terminal 211 dials again to connect to the receiving terminal 221, the calling terminal 211 does not need the receiving terminal 221 to return the IP address of the receiving terminal with the tone code. The calling terminal 211 also performs the connection of the point-to-point network telephone. Please refer to Figure 4 for its description.

FIG. 4 is a flow chart of a method for establishing a point-to-point network telephone connection between the calling terminal 211 and the called terminal 221 according to a preferred embodiment of the present invention. As shown in FIG. 4 , the calling terminal 211 intends to communicate with the called terminal 221 again. Firstly, in step 401 , the calling terminal 211 dials the telephone number of the receiving terminal, and establishes a telephone network connection with the receiving terminal 221 via the telephone network 201 and the telephone network 203 . Then go to step 402 .

In step 402 , after dialing, the calling terminal 211 retrieves the IP address of the called terminal corresponding to the telephone number of the called terminal from the storage element 217 . Then go to step 403 .

In step 403, when the telephone network connection rings, the calling terminal 211 attempts to establish a point-to-point Internet telephone connection with the called terminal 221 according to the retrieved IP address of the called terminal. If the point-to-point network telephone connection is successful, the telephone network connection established in step 401 is terminated, and the calling terminal 211 and the called terminal 221 communicate through the point-to-point network telephone connection instead. This step can speed up the establishment of the VoIP connection, and there is no need to transmit the IP address with the tone code. And if the point-to-point Internet phone connection fails, then the method step 303 in FIG. 3 can still be continued. The calling terminal 211 and the called end 221 transmit each other's IP addresses with the tone code, and then carry out the point-to-point Internet phone connection.

The reason for the failure of the point-to-point VoIP connection in the above step 403 is, for example, that the receiver 221 is connected to the Internet 205 in the form of a dynamic IP address. The address is not necessarily the IP address currently used by the receiving end 221 . Or when the calling end 211 establishes a point-to-point VoIP connection, the receiving end 221 is not connected to the Internet 205 . All of these reasons will cause the VoIP connection to fail.

In the above description and illustrations, the spirit of the present invention is described by taking the user using the communication device of the telephone as an example to illustrate the spirit of the present invention, but the present invention is not limited thereto. Users can also use mobile communication devices (such as mobile phones) to make calls, and exchange IP addresses in tone codes to establish point-to-point network telephone connections, which also belongs to the application of the present invention.

In addition, when using a point-to-point Internet phone connection to make a call, if the Internet phone switching device detects that the current Internet is in a congested state, resulting in poor call quality, the point-to-point Internet phone connection can also be reconnected. Switch back to the phone network connection to make calls to ensure call quality.

Claims (9)

1. method of setting up networking telephone line, use for a calling terminal and a callee and converse with point-to-point line via a Internet, wherein this calling terminal and this callee have a calling terminal IP address and a callee IP address of this Internet respectively, and this method comprises:

This calling terminal is dialed a callee telephone number of this callee, and sets up one first telephone network line with this callee;

This calling terminal and this callee transmit this calling terminal IP address with tone sign indicating number pattern respectively via this telephone network line and the other side is given in this callee IP address; And

According to this calling terminal IP address and this callee IP address, set up one first point to point network telephone connection between this calling terminal and this callee, conversing, and interrupt this telephone network line.

2. the method for setting up networking telephone line as claimed in claim 1 is characterized in that described method also comprises:

This calling terminal stores this callee telephone number and reaches this callee IP address corresponding with it in a storage unit of this calling terminal.

3. the method for setting up networking telephone line as claimed in claim 2, when it is characterized in that described calling terminal once more with this callee line conversation, this method also comprises:

This calling terminal is dialed this callee telephone number, and sets up one second telephone network line with this callee;

This calling terminal captures this callee IP address corresponding to this callee telephone number in this storage unit; And

This calling terminal is set up one second point to point network telephone connection according to this callee IP address and this callee and is conversed to carry out line, and interrupts this second telephone network line.

4. the method for setting up networking telephone line as claimed in claim 1 is characterized in that described method also comprises:

The calling terminal telephone number that this callee stores this calling terminal reaches this calling terminal IP address corresponding with it in a storage unit of this callee.

5. the method for setting up networking telephone line as claimed in claim 1 is characterized in that the described first telephone network line is a public exchanging telephone network line.

6. method of setting up networking telephone line, use for a calling terminal and a callee and converse with point-to-point line via a Internet, wherein this calling terminal comprises one first storage unit, this first storage unit is in order to storing telephone number and the IP address corresponding with it, this calling terminal and this callee have a calling terminal IP address and a callee IP address of this Internet respectively, and this method comprises:

A. this calling terminal is dialed a callee telephone number of this callee, and sets up one first telephone network line with this callee;

B. whether fechtable goes out to correspond to a callee IP address of this callee telephone number and can set up line with the callee IP address that is captured this calling terminal in this storage unit, if then carry out steps d; If not, then carry out step c;

C. this calling terminal and this callee transmit this caller ip address and this callee address with tone sign indicating number pattern respectively via this telephone network line and give the other side; And

D. according to this calling terminal IP address and this callee IP address, set up between this calling terminal and this callee a bit to the spot net telephone connection, conversing, and interrupt this first telephone network line.

7. the method for setting up networking telephone line as claimed in claim 6 is characterized in that this method also comprises between described step c and this steps d:

This calling terminal stores this callee telephone number and reaches this callee IP address corresponding with it in this first storage unit.

8. the method for setting up networking telephone line as claimed in claim 6 is characterized in that this method also comprises between described step c and this steps d:

The calling terminal telephone number that this callee stores this calling terminal reaches this calling terminal IP address corresponding with it in one second storage unit of this callee.

9. the method for setting up networking telephone line as claimed in claim 6 is characterized in that the described first telephone network line is a PSTN line.

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