TWI426745B - Default gateway, terminal device, and method for exchanging voip signaling - Google Patents

Description

Preset gateway, terminal equipment and network protocol voice signaling exchange method

The present invention relates to the field of Voice over Internet Protocol (VoIP), and in particular, to a preset gateway, a terminal device, and a network protocol voice signaling exchange method.

Generally, the Voice over Internet Protocol (VoIP) system needs to use the Media Gateway Controller (MGC) to exchange network protocol voice signaling. Only after the network protocol voice signaling exchange is completed can the voice over Internet Protocol (VoIP) system be exchanged. Make a network protocol voice call. Moreover, a network protocol voice system typically requires multiple sets of media gateway controllers to back up each other.

However, media gateway controllers are quite expensive and costly to set up, and there is an urgent need for a low-cost network protocol voice signaling exchange method.

In view of the above, it is necessary to provide a preset gateway that can save network cost by exchanging network protocol voice signaling without using a media gateway controller.

In addition, it is also necessary to provide a terminal device that can exchange network protocol voice signaling without using a media gateway controller, thereby saving costs.

In addition, it is also necessary to provide a network protocol voice signaling exchange method, without borrowing The media gateway controller can exchange network protocol voice signaling, which saves costs.

The preset gateway provided in the embodiment of the present invention is communicatively connected to a plurality of terminal devices and a dynamic domain name server in a network protocol voice network. The terminal devices generate respective telephone numbers, generate domain names corresponding to the respective telephone numbers according to preset rules, and register the respective domain names with the respective network protocol addresses to the dynamic domain name server. The preset gateway includes a gateway registration module, a gateway number receiving module, a gateway address searching module, and a gateway signaling switching module. The gateway registration module is configured to generate a domain name of the preset gateway, and register the domain name of the preset gateway with the network protocol address of the preset gateway to the dynamic domain name server. The gateway number receiving module is configured to receive a called telephone number from a public switched telephone network, the called telephone number being a telephone number of the called terminal device in the terminal devices. The gateway address searching module is configured to generate a called domain name corresponding to the called phone number according to the preset rule, and check the called network protocol address corresponding to the called domain name to the dynamic domain name server. The gateway signaling exchange module is configured to exchange network protocol voice signaling with the called terminal device according to the called network protocol address when successfully detecting the called network protocol address, and when the interface is unsuccessful The call to the called telephone number is rejected to the public switched telephone network when the called network protocol address is checked.

Preferably, the preset gateway further includes a gateway register and a gateway temporary storage determining module. The gateway register is used to store the called network protocol address corresponding to the called domain name that has been successfully checked. The gateway temporary storage judging module is configured to determine whether there is a called network protocol address corresponding to the called domain name in the gateway register, and when the gateway register has the called party corresponding to the called domain name The called network protocol address is obtained directly from the gateway register when the network protocol address is located.

Preferably, the gateway registration module is further used for restarting or resetting the preset gateway When the network protocol voice network is newly accessed, the network protocol address of the preset gateway is updated to the dynamic domain name server in time.

Preferably, the preset rule comprises combining the phone number and the preset string to form a corresponding domain name.

The terminal device provided in the embodiment of the present invention is communicatively connected to a plurality of other terminal devices, a preset gateway, and a dynamic domain name server in a network protocol voice network. The preset gateway generates a domain name of the preset gateway, and registers the domain name of the preset gateway with the network protocol address of the preset gateway to the dynamic domain name server. A plurality of other terminal devices generate respective telephone numbers, generate domain names corresponding to the respective telephone numbers according to a preset rule, and register the respective domain names with the respective network protocol addresses to the dynamic domain name server. The terminal device includes a terminal registration module, a terminal number receiving module, a terminal address searching module, and a terminal signaling switching module. The terminal registration module is configured to generate a phone number of the terminal device, generate a domain name corresponding to the phone number of the terminal device according to the preset rule, and send the domain name of the terminal device and the network protocol address of the terminal device to the dynamic Domain name server registration. The terminal number receiving module is configured to receive a called telephone number input by the user, and the called telephone number is a telephone number of the called terminal device. The terminal address searching module is configured to generate a called domain name corresponding to the called phone number according to the preset rule, and check the called network protocol address corresponding to the called domain name to the dynamic domain name server. The terminal signaling switching module is configured to exchange network protocols with the called terminal device according to the called network protocol address when the called terminal device is one of a plurality of other terminal devices in the network protocol voice network Voice signaling.

Preferably, the terminal address searching module is further configured to send to the dynamic domain name when the called terminal device is not one of a plurality of other terminal devices in the network protocol voice network The server reverses the network protocol address of the preset gateway. The terminal signaling switching module is further configured to exchange network protocol voice signaling with the preset gateway according to the network protocol address of the preset gateway.

Preferably, the terminal device further includes a terminal temporary storage device and a terminal temporary storage determining module. The terminal register is used to store the called network protocol address corresponding to the called domain name that has been successfully checked. The terminal temporary storage judging module is configured to determine whether there is a called network protocol address corresponding to the called domain name in the terminal register, and the called network protocol corresponding to the called domain name is included in the terminal register The called network protocol address is obtained directly from the terminal register when the address is located.

Preferably, the terminal registration module is further configured to add a preset value to the phone number of the terminal device when the registration is not successful, to obtain an updated phone number, and generate an updated domain name based on the updated phone number, and The updated domain name and the network protocol address of the terminal device continue to be registered with the dynamic domain name server until the registration is successful.

Preferably, the terminal registration module is further configured to update the network protocol address of the terminal device to the dynamic domain name server whenever the terminal device is rebooted or re-accessed to the network protocol voice network.

Preferably, the telephone number of the terminal device is generated by using a hash algorithm based on a media access control address of the terminal device, where the hash algorithm takes the last six bits of the media access control address of the terminal device. The preset rule includes combining a phone number and a preset string to form a corresponding domain name.

The network protocol voice signaling exchange method provided in the embodiment of the present invention is applied to a preset gateway device, and the preset gateway device is communicatively connected with a plurality of terminal devices and a dynamic domain name server. The preset gateway generates a domain name of the preset gateway, and the preset gate is The domain name of the router and the network protocol address of the preset gateway are registered with the dynamic domain name server. The terminal devices generate respective telephone numbers, generate domain names corresponding to the respective telephone numbers according to preset rules, and register the respective domain names with the respective network protocol addresses to the dynamic domain name server. The network protocol voice signaling exchange method comprises the steps of: receiving a called telephone number from a public switched telephone network, the called telephone number being a telephone number of the called terminal device in the terminal devices; generating according to the preset rule The called domain name corresponding to the called telephone number; the reversed-checking the called network protocol address corresponding to the called domain name to the dynamic domain name server; determining whether the called network protocol address is successfully detected; if successful Inverting the called network protocol address, and exchanging network protocol voice signaling with the called terminal device according to the called network protocol address; or if the called network protocol bit is not successfully checked The address is denied to the public switched telephone network for the call of the called telephone number.

Preferably, the network protocol voice signaling exchange method further comprises the following steps: determining whether there is a called network protocol address corresponding to the called domain name in the gateway register; if the gateway register has the The called network protocol address corresponding to the called domain name directly obtains the called network protocol address from the gateway register; or if the gateway register does not have the corresponding domain name corresponding to the called domain name When the network protocol address is called, the dynamic domain name server is inspected for the called network protocol address corresponding to the called domain name.

The network protocol voice signaling exchange method provided in the embodiment of the present invention is applied to a terminal device, and the terminal device is communicatively connected with a plurality of other terminal devices, a preset gateway device, and a dynamic domain name server. The preset gateway generates a domain name of the preset gateway, and registers a domain name of the preset gateway with a network protocol address of the preset gateway to the dynamic domain name server, the terminal device Generating respective phone numbers with a plurality of other terminal devices, generating domain names corresponding to the respective phone numbers according to a preset rule, and The respective domain names are registered with the dynamic domain name server with their respective network protocol addresses. The network protocol voice signaling exchange method comprises the steps of: receiving a called telephone number input by a user, the called telephone number being a telephone number of the called terminal device; generating, according to the preset rule, the corresponding phone number corresponding to the called telephone number Calling the domain name, and checking the called network protocol address corresponding to the called domain name to the dynamic domain name server; and when the called terminal device is one of a plurality of other terminal devices in the network protocol voice network The network protocol voice signaling is exchanged with the called terminal device according to the called network protocol address.

Preferably, the network protocol voice signaling exchange method further comprises: checking the preset gateway to the dynamic domain name server when the called terminal device is not one of the plurality of other terminal devices in the network protocol voice network; The network protocol address of the device; and exchange network protocol voice signaling with the preset gateway according to the network protocol address of the preset gateway.

Preferably, the network protocol voice signaling exchange method further comprises the following steps: determining whether there is a called network protocol address corresponding to the called domain name in the terminal register; if the terminal is in the terminal register The called network protocol address corresponding to the domain name directly obtains the called network protocol address from the terminal register; or if the terminal register does not have the called network agreement corresponding to the called domain name The address is then checked against the dynamic domain name server for the called network protocol address corresponding to the called domain name.

The above and many advantages of the invention will be readily apparent from the following detailed description of the preferred embodiments.

100‧‧‧Network Protocol Voice Network

100a, 100b, 100c200a, 200b, 400‧‧‧ terminal equipment

110‧‧‧Preset gateway

111‧‧‧Gateway registration module

112‧‧‧Gateway number receiving module

113‧‧‧Chute address search module

114‧‧‧Gateway Signaling Switching Module

115‧‧‧Threshold register

116‧‧‧Chute temporary judgment module

117‧‧‧gate processor

120‧‧‧Dynamic Domain Name Server

120a‧‧‧ comparison table

130‧‧‧Integrated access equipment

200‧‧‧Public switched telephone network

210‧‧‧Trunk gateway

220‧‧‧Media gateway

401‧‧‧ Terminal Registration Module

402‧‧‧Terminal number receiving module

403‧‧‧terminal address lookup module

404‧‧‧Terminal Signaling Switching Module

405‧‧‧ Terminal register

406‧‧‧ terminal temporary storage judgment module

407‧‧‧ Terminal Processor

1 is an environmental diagram of an embodiment of a network communication system of the present invention.

2 is a block diagram of an embodiment of a preset gateway according to the present invention.

3 is a block diagram of an embodiment of a terminal device of the present invention.

4 is a flow chart of an embodiment of a method for registering a preset gateway and a terminal device according to the present invention.

FIG. 5 is a flowchart of an embodiment of a network protocol voice signaling exchange method of a terminal device according to the present invention.

FIG. 6 is a flowchart of an embodiment of a network protocol voice signaling exchange method of a preset gateway according to the present invention.

FIG. 7 is a transmission diagram of an embodiment of a network protocol voice signaling exchange method according to the present invention.

FIG. 8 is a transmission diagram of another embodiment of a network protocol voice signaling exchange method according to the present invention.

1 is an environmental diagram of an embodiment of a network communication system of the present invention. In the present embodiment, the network communication system includes a Voice over Internet Protocol (VoIP) network 100 and a Public Switched Telephone Network (200). The network protocol voice network 100 includes a default gateway 110, a Dynamic Domain Name Service Server (DDNS Server) 120, and an Integrated Access Device (IAD) 130.

The integrated access device 130 is configured to access the plurality of terminal devices 100a, 100b, 100c to the network protocol voice network 100. In this embodiment, the plurality of terminal devices 100a, 100b, and 100c may be a network phone, a notebook computer, a desktop computer, or the like. It should be noted that when the terminal device 100a, 100b, 100c itself has the function of accessing the network, it may also access the network protocol voice network without accessing the integrated access device 130. 100.

The dynamic domain name server 120 includes a look-up table 120a. When the terminal devices 100a, 100b, 100c and the preset gateway 110 register with the dynamic domain name server 120, the dynamic domain name server 120 sets the terminal devices 100a, 100b, 100c and The domain name and Internet Protocol (IP) address of the gateway 110 are stored in the lookup table 120a. The look-up table 120a includes a domain name field and an IP address field for storing the domain name and IP address of the terminal devices 100a, 100b, 100c and the preset gateway 110, respectively.

The public switched telephone network 200 includes a trunk gateway 210 and a media gateway 220. The relay gateway 210 is used for the conversion of the cross-boundary protocol between the network protocol voice network 100 and the public switched telephone network 200. The media gateway 220 is used to connect the plurality of terminal devices 200a, 200b to the public switched telephone network 200.

The plurality of terminal devices 200a, 200b can dial the terminal devices 100a, 100b, 100c in the network protocol voice network 100 via the media gateway 220, the relay gateway 210, and the preset gateway 110.

In an embodiment of the present invention, the preset gateway 110 first generates a domain name of the preset gateway 110 (for example: 0944defaultGW.myvoip.net), and presets the domain name of the gateway 110 with a preset gateway. The IP address of the device 110 (e.g., 60.199.244.6) is registered with the dynamic domain name server 120.

When the dynamic domain name server 120 receives the registration of the preset gateway 110, it will determine whether the domain name of the preset gateway 110 is duplicated. In this embodiment, since the domain name of the preset gateway 110 is generally applied to the dynamic domain name server 120 in advance and paid for. Obtained, so there will be no duplication. Correspondingly, the dynamic domain name server 120 stores the domain name and IP address of the preset gateway 110 in the look-up table 120a, and sends the registration success information to the preset gateway 110.

When the preset gateway 110 successfully registers with the dynamic domain name server 120, the preset gateway 110 will move to the dynamic every time the preset gateway 110 is restarted or re-accessed to the network protocol voice network 100. The domain name server 120 updates the IP address of the preset gateway 110.

Each terminal device 100a, 100b, 100c generates a respective telephone number, generates a domain name corresponding to the respective telephone number according to a preset rule, and registers the respective domain name with the respective IP address to the dynamic domain name server 120. In this embodiment, the telephone numbers of each terminal device 100a, 100b, 100c are generated based on respective MAC addresses by using a hash algorithm (HASH algorithm), which takes the MAC address of each terminal device. The last six digits, the default rule is to combine the phone number with a preset string (such as ".myvoip.net") to form a domain name. For example, if the MAC addresses of the terminal devices 100a and 100b are 11:12:31:23 and 11:45:64:56, respectively, the telephone numbers of the terminal devices 100a and 100b are 123123 and 456456 respectively, and the area code is combined. (For example, 0944), the final telephone numbers of the terminal devices 100a, 100b are 0944123123 and 0944456456, respectively. Correspondingly, the domain names of the terminal devices 100a, 100b are "0944123123.myvoip.net" and "0944456456.myvoip.net", respectively.

When the dynamic domain name server 120 receives the registration of the plurality of terminals 100a, 100b, 100c, it is determined whether the domain names of the plurality of terminals 100a, 100b, 100c are duplicated. In this embodiment, since the plurality of terminals 100a, 100b, and 100c generate domain names corresponding to respective telephone numbers according to preset rules, and the plurality of terminals 100a, 100b, and 100c Registering a domain name with the dynamic domain name server 120 is free, so there may be duplicates of the domain name. When the domain name is duplicated, the dynamic domain name server 120 sends the registration failure information to the corresponding terminal device. When there is no duplication of the domain name, the dynamic domain name server 120 records the domain name and IP address of the corresponding terminal device in the comparison table 120a, and sends the registration success information to the corresponding terminal device.

After the terminal device 100a, 100b, 100c receives the registration failure information from the dynamic domain name server 120, the current phone number is added with a preset value (such as 1) to obtain the updated phone number, and the terminal is generated based on the updated phone number. The updated domain name of the device 100a, 100b, 100c, and the updated domain name and IP address continue to be registered with the dynamic domain name server 120 until the registration is successful.

After each terminal device 100a, 100b, 100c is successfully registered, each time the terminal device 100a, 100b, 100c is rebooted or re-accessed to the network-assigned voice network 100, each dynamic domain name server 120 is updated in time. The IP addresses of the terminal devices 100a, 100b, 100c.

When a terminal device 100a calls another terminal device 100b in the network protocol voice network 100, the calling terminal device 100a first receives the called telephone number input by the user (ie, the telephone number of the called terminal device 100b), and then, The calling terminal device 100a generates the called domain name corresponding to the called telephone number according to the preset rule, and checks the called IP address corresponding to the called domain name to the dynamic domain name server 120. When the called IP address corresponding to the called domain name is successfully checked, the calling terminal device 100a exchanges network protocol voice signaling with the called terminal device 100b according to the called IP address. For example, if the telephone number of the called terminal device 100b is 0944456456 and the IP address is 119.160.246.23, the calling terminal device 100a first receives the telephone number 0944456456 input by the user, and then generates the called domain name "0944456456.myvoip. Net" to dynamic domain name The server 120 reversely checks the called IP address "119.160.246.23" and exchanges network protocol voice signaling with the called terminal device 100b according to the called IP address "119.160.246.23". After the network protocol voice signaling exchange is completed, the calling terminal device 100a can perform a network protocol voice call with the called terminal device 100b.

When a terminal device 100a calls another terminal device 200b across the network protocol voice network 100 and the public switched telephone network 200, the calling terminal device 100a first receives the called telephone number input by the user (ie, the called terminal device 200b The calling terminal device 100a then generates the called domain name corresponding to the called telephone number according to the preset rule, and checks the called IP address corresponding to the called domain name to the dynamic domain name server 120. Since the called terminal device 200b does not register the domain name with the dynamic domain name server 120, the calling terminal device 100a cannot successfully check the called IP address corresponding to the called domain name. Therefore, the calling terminal device 100a back-checks the IP address of the preset gateway 110 to the dynamic domain name server 120, and exchanges network protocol voice with the preset gateway 110 according to the IP address of the preset gateway 110. Signaling. After the network protocol voice signaling exchange is completed, the calling terminal device 100a can make a voice call with the called terminal device 200b via the preset gateway 110, the relay gateway 210, and the media gateway 220. For example, if the IP address of the preset gateway 110 is 60.199.244.6, the calling terminal device 100a checks back to the dynamic domain name server 120 that the IP address of the preset gateway 110 is "60.199.244.6. And exchange network protocol voice signaling with the preset gateway 110 according to the IP address "60.199.244.6".

When a terminal device 200a calls another terminal device 100b across the public switched telephone network 120 and the network protocol voice network 100, the preset gateway 110 will be from the main via the media gateway 220 and the relay gateway 210. The called terminal device 200a receives the called telephone number (i.e., the telephone number of the called terminal device 100b). When the called number is received After the code, the preset gateway 110 generates the called domain name corresponding to the called telephone number according to the preset rule, and checks the called IP address corresponding to the called domain name to the dynamic domain name server 120. When the called IP address corresponding to the called domain name is successfully checked, the preset gateway 110 exchanges network protocol voice signaling with the called terminal device 100b according to the called IP address. For example, if the telephone number of the called terminal device 100b is 0944456456 and the IP address is 119.160.246.23, the preset gateway 110 first receives the called telephone number 0944456456 from the public switched telephone network 200, and then generates a The domain name "0944456456.myvoip.net" is called, and the dynamic domain name server 120 is checked to the called IP address "119.160.246.23", and the network is exchanged with the called terminal device 100b according to the called IP address "119.160.246.23". Road agreement voice signaling. After the network protocol voice signaling exchange is completed, the calling terminal device 200a can make a voice call with the called terminal device 100b across the public switched telephone network 200 and the network protocol voice network 100.

It should be noted that when the preset gateway 110 or the terminal device 100a, 100b successfully reverses the called IP address corresponding to the called domain name, it will be stored in the respective cache (Cache). When it is necessary to check the called IP address corresponding to the called domain name next time, the called IP address corresponding to the called domain name is directly obtained from the temporary storage device, and the reverse domain name server 120 is not required to repeat the reverse checking.

In general, the preset gateway 110 and the terminal device 100a, 100b register the domain name and the IP address with the dynamic domain name server 120, and then check the called IP address corresponding to the called domain name to the dynamic domain name server 120. Finally, the network protocol voice signaling is exchanged with the called terminal device according to the called IP address. Therefore, the preset gateway 110 and the terminal devices 100a, 100b can exchange network protocol voice signaling without using the media gateway controller, thereby greatly saving costs.

2 is a block diagram of an embodiment of a preset gateway 110 of the present invention. In this embodiment The preset gateway 110 includes a gateway registration module 111, a gateway number receiving module 112, a gateway address searching module 113, a gateway signaling switching module 114, a gateway register 115, and a gate. The track temporary judgment module 116 and the gateway processor 117. The gateway processor 117 is configured to execute the gateway registration module 111, the gateway number receiving module 112, the gateway address searching module 113, the gateway signaling switching module 114, and the gateway temporary storage determining module 116.

The gateway registration module 111 is configured to generate a domain name of the preset gateway 110, and register the domain name of the preset gateway 110 with the IP address of the preset gateway 110 to the dynamic domain name server 120. In this embodiment, the domain name of the preset gateway 110 may be “0944defaultGW.myvoip.net”, and the IP address of the preset gateway 110 may be “60.199.244.6”.

When the dynamic domain name server 120 receives the registration of the preset gateway 110, it will determine whether the domain name of the preset gateway 110 is duplicated. Since the domain name of the preset gateway 110 is generally obtained in advance by applying to the dynamic domain name server 120 and paying for it, there is no duplication. Correspondingly, the dynamic domain name server 120 stores the domain name and IP address of the preset gateway 110 in the look-up table 120a, and sends the registration success information to the preset gateway 110.

After the gateway registration module 111 successfully registers with the dynamic domain name server 120, whenever the preset gateway 110 is restarted or re-accessed to the network protocol voice network 100, the gateway registration module 111 will promptly move to the dynamic state. The domain name server 120 updates the IP address of the preset gateway 110.

The gateway number receiving module 112 is configured to receive the called telephone number from the public switched telephone network 200. In the present embodiment, it is assumed that the calling terminal device and the called terminal device are the terminal device 200a in the public switched telephone network 200 and the terminal device 100b in the network-assigned voice network 100, respectively, and the called telephone number is corresponding. Terminal device 100b Phone number.

The gateway address searching module 113 is configured to generate a called domain name corresponding to the called phone number according to a preset rule, and check the called IP address corresponding to the called domain name to the dynamic domain name server 120. In this embodiment, the preset rule is to combine the called phone number and a preset string (such as ".myvoip.net") to form a called domain name. For example, assuming that the telephone number of the called terminal device 100b is 0944456456, the domain name of the called terminal device 100b is "0944456456.myvoip.net".

The gateway signaling exchange module 114 is configured to exchange network protocol voice signaling with the called terminal device according to the called IP address when successfully checking the called IP address, and when the called IP address is not checked At the time of the address, the public switched telephone network 200 rejects the call of the called telephone number.

The gateway register 115 is used to store the called IP address corresponding to the called domain name that has been successfully checked. The gateway temporary storage judging module 116 is configured to determine whether there is a called IP address corresponding to the called domain name in the gateway register 115, and the called IP address corresponding to the called domain name is present in the gateway register 115. The called IP address is obtained directly from the gateway register 115. When there is no called IP address corresponding to the called domain name in the gateway register 115, the gateway address searching module 113 further checks the dynamic domain name server 120 for the IP address corresponding to the called domain name.

3 is a block diagram of an embodiment of a terminal device 400 of the present invention. In the present embodiment, the terminal device 400 is a collective term for the plurality of terminal devices 100a, 100b, and 100c in FIG. The terminal device 400 includes a terminal registration module 401, a terminal number receiving module 402, a terminal address searching module 403, a terminal signaling switching module 404, a terminal temporary register 405, a terminal temporary storage determining module 406, and a terminal processor. 407. The terminal processor 407 is configured to execute the terminal registration module 401, the terminal number receiving module 402, the terminal address searching module 403, the terminal signaling switching module 404, and the terminal temporary storage determining module 406.

The terminal registration module 401 is configured to generate a phone number of the terminal device 400, generate a domain name corresponding to the phone number of the terminal device 400 according to a preset rule, and send the domain name of the terminal device 400 and the IP address of the terminal device 400 to the dynamic domain name server. 120 registration. In this embodiment, the phone number of the terminal device 400 is generated by using a hash algorithm based on the MAC address of the terminal device 400, and the hash algorithm is to take the last six bits of the MAC address of the terminal device 400. The rule is to combine a phone number with a preset string (eg ".myvoip.net") to form a domain name. For example, assuming that the MAC address of the terminal device 400 is 11:12:31:23, the telephone number of the terminal device 400 is 123123, and in combination with the area code (such as 0944), the final telephone number of the terminal device 400 is 0944123123. Correspondingly, the domain name of the terminal device 400 is "0944123123.myvoip.net".

After the dynamic domain name server 120 receives the registration of the terminal device 400, the dynamic domain name server 120 determines whether the domain name of the terminal device 400 is duplicated. In this embodiment, since the terminal device 400 generates a domain name corresponding to its own phone number according to a preset rule, and the terminal device 400 registers the domain name with the dynamic domain name server 120 for free, the domain name of the terminal device 400 may appear. repeat. When the domain name of the terminal device 400 appears to be duplicated, the dynamic domain name server 120 transmits registration failure information to the terminal device 400. When the domain name of the terminal device 400 does not appear to be duplicated, the dynamic domain name server 120 stores the domain name and IP address of the terminal device 400 in the lookup table 120a, and transmits the registration success information to the terminal device 400.

The terminal registration module 401 is further configured to add a preset value (such as 1) to the phone number of the terminal device 400 when the registration is not successful, to obtain an updated phone number, and generate an updated domain name based on the updated phone number, and The updated domain name and IP address continue to be registered with the dynamic domain name server 40 until the registration is successful.

After the terminal registration module 401 successfully registers with the dynamic domain name server 120, the terminal registration module 401 updates the dynamic domain name server 120 in time when the terminal device 400 is rebooted or re-accessed to the network protocol voice network 100. The IP address of the terminal device 400.

The terminal number receiving module 402 is configured to receive a called telephone number input by the user, and the called telephone number is a telephone number of the called terminal device. In this embodiment, the called terminal device may be one of the plurality of terminal devices 100a, 100b, 100c in the network protocol voice network 100, and may also be multiple terminal devices 200a, 200b in the public switched telephone network 200. one of them. Assuming that the called terminal device is the terminal device 100b in the network protocol voice network 100, the called telephone number is the telephone number of the terminal device 100b; assuming that the called terminal device is the terminal device 200b in the public switched telephone network 200, Then, the called telephone number is the telephone number of the terminal device 200b.

The terminal address searching module 403 is configured to generate a called domain name corresponding to the called phone number according to the preset rule, and check the called IP address corresponding to the called domain name to the dynamic domain name server 120.

In this embodiment, since the plurality of terminal devices 100a, 100b, and 100c in the network protocol voice network 100 are all registered with the dynamic domain name server 120, when the called terminal device is a plurality of network protocol voice networks 100, When one of the terminal devices 100a, 100b, 100c, the terminal address lookup module 403 can successfully check the called IP address.

Since the plurality of terminal devices 200a, 200b in the public switched telephone network 200 are not registered with the dynamic domain name server 120, when the called terminal device is one of the plurality of terminal devices 200a, 200b in the public switched telephone network 200, The terminal address lookup module 403 cannot successfully check the called IP address.

The terminal signaling exchange module 404 is configured to exchange network protocol voice signaling with the called terminal device according to the called IP address when successfully detecting the called IP address.

For example, if the called terminal device is the terminal device 100b in the network protocol voice network 100, the telephone number is 0944456456, and the IP address is 119.160.246.23, the terminal number receiving module 402 first receives the user input phone. The number is 0944456456, and then the terminal address lookup module 403 generates the called domain name "0944456456.myvoip.net", and then successfully checks the called IP address "119.160.246.23" to the dynamic domain name server 120, and according to the IP bit. The address "119.160.246.23" exchanges network protocol voice signaling with the terminal device 100b. After the network protocol voice signaling exchange is completed, the terminal device 400 can make a voice call with the called terminal device 100b.

When the called IP address corresponding to the called domain name is not checked, the terminal address searching module 403 is further configured to check the IP address of the preset gateway 110 to the dynamic domain name server 120, and correspondingly, the terminal The signaling switching module 404 is further configured to exchange network protocol voice signaling with the preset gateway 110 according to the IP address of the preset gateway 110. After the network protocol voice signaling exchange is completed, the terminal device 400 can make a voice call with the called terminal device via the preset gateway 110, the relay gateway 210, and the media gateway 220.

For example, if the called terminal device is the terminal device 200b in the public switched telephone network 200, the terminal address lookup module 403 cannot successfully find the called IP address corresponding to the called domain name. Assuming that the IP address of the preset gateway 110 is 60.199.244.6, the terminal address lookup module 403 inverts the dynamic domain name server 120 to the IP address "60.199.244.6" of the preset gateway 110. The network protocol voice signaling is exchanged with the preset gateway 110 according to the IP address "60.199.244.6". After the network protocol voice signaling exchange is completed, the terminal device 400 can pass the preset gateway. 110. The relay gateway 210 and the media gateway 220 make a voice call with the called terminal device 200b.

The terminal register 405 is configured to store the called IP address corresponding to the called domain name that has been successfully checked. The terminal temporary storage judging module 406 is configured to determine whether there is a called IP address corresponding to the called domain name in the terminal register 405, and when the terminal buffer 405 has the called IP address corresponding to the called domain name, directly from the terminal IP address The called IP address is obtained in the terminal register 405. When there is no called IP address corresponding to the called domain name in the terminal register 405, the terminal address searching module 403 further checks the dynamic domain name server 120 for the IP address corresponding to the called domain name.

4 is a flow chart of an embodiment of a method for registering a preset gateway 110 and a terminal device 400 according to the present invention. In the present embodiment, since the registration methods of the preset gateway 110 and the terminal device 400 are both described using the flowchart in FIG. 4, for the convenience of description, the preset gateway 110 and the terminal device 400 are collectively referred to as a network. Road equipment.

In step S100, the network device determines whether it is the preset gateway 110.

If the network device is not the preset gateway 110 but the terminal device 400, the terminal device 400 generates its own telephone number in step S102. In the present embodiment, the telephone number of the terminal device 400 is generated based on its own MAC address using a hash algorithm that takes the last six bits of the MAC address of each terminal device. For example, if the MAC address of the terminal device 400 is 11:12:31:23, respectively, the telephone number of the terminal device 400 is 123123, and in combination with the area code (such as 0944), the final telephone number of the terminal device 400 is 0944123123. .

In step S104, the terminal device 400 generates a domain name corresponding to its own phone number according to a preset rule. In this embodiment, the preset rule is to combine a phone number and a preset string (eg, “.myvoip.net”) to form a corresponding domain name. For example Speaking of the terminal device 400, the domain name of the terminal device 400 is "0944123123.myvoip.net".

In step S106, the terminal device 400 registers its own domain name with its own IP address to the dynamic domain name server 120.

When the dynamic domain name server 120 receives the registration of the terminal device 400, it determines whether the domain name of the terminal device 400 is duplicated. In this embodiment, since the terminal device 400 generates a domain name corresponding to its own phone number according to a preset rule, there may be a repetition of its own domain name. When the domain name of the terminal device 400 appears to be duplicated, the dynamic domain name server 120 transmits registration failure information to the terminal device 400. When the domain name of the terminal device 400 does not appear to be duplicated, the dynamic domain name server 120 stores the domain name and IP address of the terminal device 400 in the lookup table 120a, and transmits registration success information to the corresponding terminal device 400.

In step S108, the terminal device 400 determines whether its own domain name is successfully registered.

If the domain name of the terminal device 400 is not successfully registered, that is, the registration failure information is received from the dynamic domain name server 120, then in step S112, the terminal device 400 adds the current phone number to a preset value (such as 1) to obtain the updated phone number. number.

In step S114, the terminal device 400 generates an updated domain name based on the updated phone number.

Returning to step S106, the terminal device 400 continues to register the updated domain name and IP address with the dynamic domain name server 120 until the registration is successful.

After the terminal device 400 is successfully registered, whenever the terminal device 400 is rebooted or re-accessed to the network-assigned voice network 100, the IP address of the terminal device 400 is updated to the dynamic domain name server 120 in time.

If the result of the determination in step S100 is that the network device is the preset gateway 110, then in step S110, the preset gateway 110 generates the domain name of the preset gateway 110, for example: 0944defaultGW.myvoip.net.

In step S106, the preset gateway 110 registers the domain name of the preset gateway 110 with the IP address of the preset gateway 110 (eg, 60.199.244.6) to the dynamic domain name server 120.

When the dynamic domain name server 120 receives the registration of the preset gateway 110, it will determine whether the domain name of the preset gateway 110 is duplicated. In this embodiment, since the domain name of the preset gateway 110 is generally obtained in advance by applying to the dynamic domain name server 120 and paying for it, there is no duplication. Correspondingly, the dynamic domain name server 120 stores the domain name and IP address of the preset gateway 110 in the look-up table 120a, and sends the registration success information to the preset gateway 110.

Therefore, in step S108, the preset gateway 110 determines that the registration is successful.

When the preset gateway 110 successfully registers with the dynamic domain name server 120, the preset gateway 110 will move to the dynamic every time the preset gateway 110 is restarted or re-accessed to the network protocol voice network 100. The domain name server 120 updates the IP address of the preset gateway 110.

FIG. 5 is a flowchart of an embodiment of a network protocol voice signaling exchange method of a terminal device 100a according to the present invention. In the present embodiment, the terminal device 100a may call another terminal device 100b in the network protocol voice network 100, and may also call another terminal device 200b across the network protocol voice network 100 and the public switched telephone network 120.

At step S200, the terminal device 100a receives the called telephone number input by the user. In this embodiment, if the terminal device 100a calls another terminal device 100b in the network protocol voice network 100, the called phone number is the phone number of the terminal device 100b. If the terminal device 100a calls the other terminal device 200b across the network protocol voice network 100 and the public switched telephone network 120, the called telephone number is the telephone number of the terminal device 200b.

In step S202, the terminal device 100a generates a called domain name corresponding to the called telephone number according to a preset rule. The default rule is to combine a phone number with a preset string (eg ".myvoip.net") to form a domain name. For example, if the called terminal device is the terminal device 100b and its telephone number is 0944456456, the called domain name generated according to the preset rule is “0944456456.myvoip.net”.

In step S204, the terminal device 100a determines whether there is a called IP address corresponding to the called domain name in its terminal register 405.

If there is a called IP address corresponding to the called domain name in the terminal register 405, the terminal device 100a directly obtains the called IP address from the terminal register 405 in step S206.

If there is no called IP address corresponding to the called domain name in the terminal device register 405, then in step S210, the terminal device 100a inverts the dynamic domain name server 120 to check the called IP address corresponding to the called domain name.

In step S212, the terminal device 100a determines whether the called IP address is successfully checked.

If the called IP address is successfully checked, in step S208, the terminal device 100a exchanges network protocol voice signaling with the called terminal device 100b according to the called IP address. Thereafter, the terminal device 100a can make a voice call with the called terminal device 100b.

If the called IP address is not successfully checked, the called terminal device is not a terminal device inside the network protocol voice network 100. Accordingly, in step S214, the terminal device 100a inverts the IP address of the preset gateway 110 to the dynamic domain name server 120.

In step S216, the terminal device 100a exchanges network protocol voice signaling with the preset gateway 110 according to the IP address of the preset gateway 110. Thereafter, the terminal device 100a can make a voice call with the called terminal device 200b via the preset gateway 110 across the network protocol voice network 100 and the public switched telephone network 120.

FIG. 6 is a flowchart of an embodiment of a network protocol voice signaling exchange method of a preset gateway 110 according to the present invention. In the present embodiment, one terminal device 200a calls another terminal device 100b across the public switched telephone network 120 and the network protocol voice network 100. The preset gateway 110 receives a call from the public switched telephone network 200 to the terminal device 100b by the terminal device 200a.

At step S300, the preset gateway 110 receives the called telephone number, that is, the telephone number of the terminal device 100b, from the public switched telephone network 200.

In step S302, the preset gateway 110 generates a called domain name corresponding to the called telephone number according to a preset rule. The default rule is to combine a phone number with a preset string (eg ".myvoip.net") to form a domain name. For example, if the called terminal device is the terminal device 100b and its telephone number is 0944456456, the called domain name generated according to the preset rule is “0944456456.myvoip.net”.

In step S304, the preset gateway 110 determines whether there is a called IP address corresponding to the called domain name in the gateway register 115.

If there is a called IP address in the gateway register 115, the preset gateway 110 directly acquires the called IP address from the gateway register 115 in step S306.

If there is no called IP address in the gateway register 115, then in step 310, the preset gateway 110 inverts the dynamic domain name server 120 to check the called IP address corresponding to the called domain name.

In step S312, the preset gateway 110 determines whether the called IP address is successfully checked.

If the called IP address is successfully checked, in step S308, the preset gateway 110 exchanges network protocol voice signaling with the called terminal device (ie, the terminal device 100b) according to the called IP address. After the network protocol voice signaling exchange is completed, the calling terminal device 200a can make a voice call with the called terminal device 100b via the preset gateway 110.

If the called IP address corresponding to the called domain name is not successfully checked, the default gateway 110 rejects the called telephone number to the public switched telephone network 200 in step S314.

FIG. 7 is a transmission diagram of an embodiment of a network protocol voice signaling exchange method according to the present invention. In the present embodiment, the calling terminal device 100a calls the called terminal device 100b within the network protocol voice network 100.

First, the calling terminal device 100a and the called terminal device 100b generate respective telephone numbers, and generate domain names corresponding to the respective telephone numbers according to preset rules. For example, assuming that the telephone number generated by the calling terminal device 100a is 0944123123, the corresponding domain name generated is 0944123123.myvoip.net. Assuming that the telephone number generated by the called terminal device 100b is 0944456456, the corresponding generated domain name is 0944456456.myvoip.net.

Next, the calling terminal device 100a and the called terminal device 100b register their respective domain names and IP addresses to the dynamic domain name server 120, respectively. In the present embodiment, assuming that the IP address of the calling terminal device 100a is 210.59.230.60, the calling terminal device 100a registers 0944123123.myvoip.net and 210.59.230.60 to the dynamic domain name server 120. Assuming that the IP address of the called terminal device 100b is 119.160.246.23, the called terminal device 100b registers 0944456456.myvoip.net with 119.160.246.23 to the dynamic domain name server 120.

Thereafter, the calling terminal device 100a dials the called telephone number, that is, the telephone number 0944456456 of the called terminal device 100b.

Next, the calling terminal device 100a generates a called domain name corresponding to the called telephone number according to a preset rule, that is, 0944456456.myvoip.net.

Then, the calling terminal device 100a inverts the dynamic domain name server 120 to check the called IP address corresponding to the called domain name, that is, the IP address of the called terminal device 100b.

Next, the calling terminal device 100b receives the called IP address that the dynamic domain name server 120 responds from the dynamic domain name server 120, that is, 119.160.246.23.

Then, the calling terminal device 100a exchanges network protocol voice signaling with the called terminal device 100b according to the called IP address. Specifically, the calling terminal device 100a transmits the invite information (Invite) to the called terminal device 100b, and receives a ringing response (180 Ringing) and an acknowledgment response (200 OK) from the called terminal device 100b.

Thereafter, the calling terminal device 100a and the called terminal device 100b can perform a voice call, that is, transmit a voice stream to each other.

When the call is completed, the calling terminal device 100a terminates the signaling connection with the called terminal device 100b, that is, the calling terminal device 100a transmits the goodbye information (Bye) to the called terminal device 100b, and receives the goodbye response from the called terminal device 100b. (200 Ok).

FIG. 8 is a transmission diagram of another embodiment of a network protocol voice signaling exchange method according to the present invention. In the present embodiment, the calling terminal device 100a calls the called terminal device 200b across the network protocol voice network 100 and the public switched telephone network 200.

First, the calling terminal device 100a generates its own telephone number, and generates a domain name corresponding to the telephone number according to a preset rule. For example, assume that the calling terminal device 100a is generated. The phone number is 0944123123, and the corresponding domain name is 0944123123.myvoip.net.

Next, the calling terminal device 100a registers its own domain name and IP address with the dynamic domain name server 120. In the present embodiment, assuming that the IP address of the calling terminal device 100a is 210.59.230.60, the calling terminal device 100a registers 0944123123.myvoip.net and 210.59.230.60 to the dynamic domain name server 120.

At the same time, the preset gateway 110 generates its own domain name and registers its own domain name with the IP address to the dynamic domain name server 120. In this embodiment, assuming that the domain name and IP address of the preset gateway 110 are 0094defaultGW.myvoip.net and 119.160.246.23, respectively, the preset gateway 110 moves the 0944defaultGW.myvoip.net and 119.160.246.23 to the dynamic state. The domain name server 120 registers.

Thereafter, the calling terminal device 100a dials the called telephone number, that is, the telephone number of the called terminal device 200b, such as 88622267511.

Next, the calling terminal device 100a generates a called domain name corresponding to the called telephone number according to a preset rule, that is, 88622267511.myvoip.net.

Then, the calling terminal device 100a inverts the dynamic domain name server 120 to check the called IP address corresponding to the called domain name, that is, the IP address of the called terminal device 200b.

Since the called terminal device 200b is not registered with the dynamic domain name server 120, the dynamic domain name server 120 responds with no result to the calling terminal device 100a.

Then, the calling terminal device 100a continues to check the IP address corresponding to the domain name of the preset gateway 110 to the dynamic domain name server 120, and receives the dynamic from the dynamic domain name server 120. The IP address of the preset gateway 110 that the domain name server 120 responds to, for example, 60.199.244.6.

Then, the calling terminal device 100a exchanges network protocol voice signaling with the preset gateway 110 according to the IP address of the preset gateway 110. Specifically, the calling terminal device 100a transmits the invitation information (Invite) to the preset gateway 110, and receives a ringing response (180 Ringing) and an acknowledgment response (200 OK) from the preset gateway 110.

At the same time, the preset gateway 110 exchanges T1/E1 signaling with the relay gateway 210, thereby calling the called terminal device 200b across the network.

Thereafter, the calling terminal device 100a and the called terminal device 200b can perform a voice call across the network via the preset gateway 110 and the relay gateway 210, that is, via the preset gateway 110 and the relay gateway. 210 transmits voice streams and voice data to each other.

When the call is completed, the calling terminal device 100a terminates the signaling connection with the preset gateway 110, that is, the calling terminal device 100a transmits the goodbye information (Bye) to the preset gateway 110, and from the preset gateway 110. Receive a goodbye response (200 Ok). At the same time, the preset gateway 110 exchanges T1/E1 signaling with the relay gateway 210 to end the call to the called terminal device 200b.

In summary, the preset gateway 110, the terminal devices 100a, 100b, 100c, and 400 in the embodiment of the present invention register the domain name and the IP address with the dynamic domain name server 120, and then check the dynamic domain name server 120. The called IP address corresponding to the domain name is called, and finally the network protocol voice signaling is exchanged with the called terminal device according to the called IP address, so the preset gateway 110, the terminal devices 100a, 100b, 100c, 400 need not be used. The media gateway controller can exchange network protocol voice signaling, which greatly saves costs.

In addition, the preset gateway 110, the terminal devices 100a, 100b, 100c, 400 are also The respective scratchpad stores the called IP address corresponding to the called domain name that has been successfully checked, so that it is not necessary to repeatedly check the called IP address corresponding to the called domain name to the dynamic domain name server 120, thereby speeding up the signaling exchange. speed.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

110‧‧‧Preset gateway

111‧‧‧Gateway registration module

112‧‧‧Gateway number receiving module

113‧‧‧Chute address search module

114‧‧‧Gateway Signaling Switching Module

115‧‧‧Threshold register

116‧‧‧Chute temporary judgment module

117‧‧‧gate processor

Claims (11)

A preset gateway device is connected to a plurality of terminal devices and a dynamic domain name server in a network protocol voice network, and the terminal devices generate respective phone numbers, and generate domain names corresponding to respective phone numbers according to preset rules. And registering the respective domain name with the respective network protocol address to the dynamic domain name server, wherein the preset gateway comprises: a gateway registration module, configured to generate a domain name of the preset gateway, and Registering the domain name of the preset gateway with the network protocol address of the preset gateway to the dynamic domain name server; the gateway number receiving module for receiving the called telephone number from the public switched telephone network The called phone number is the phone number of the called terminal device in the terminal device; the gateway address searching module is configured to generate the called domain name corresponding to the called phone number according to the preset rule, and The dynamic domain name server reversely checks the called network protocol address corresponding to the called domain name; the gateway signaling exchange module is configured to use the called network when successfully detecting the called network protocol address Agreement address and the Calling the terminal device to exchange network protocol voice signaling, and rejecting the called telephone number call to the public switched telephone network when the called network protocol address is not successfully checked; the gateway register is used And storing a called network protocol address corresponding to the called domain name that has been successfully checked; and a gateway temporary storage determining module, configured to determine whether the called temporary network corresponds to the called network corresponding to the called domain name The road agreement address, when the gateway register address corresponding to the called domain name corresponding to the called domain name is obtained, the called network protocol address is directly obtained from the gateway register. The preset gateway according to claim 1, wherein the gateway registration module is further configured to: when the preset gateway is restarted or re-accessed to the network protocol voice network, The dynamic The domain name server updates the network protocol address of the preset gateway. The preset gateway according to claim 1, wherein the preset rule comprises combining a phone number and a preset string to form a corresponding domain name. An end device communicatively communicating with a plurality of other terminal devices, a preset gateway, and a dynamic domain name server in a network protocol voice network, the preset gateway generating a domain name of the preset gateway, and The domain name of the preset gateway and the network protocol address of the preset gateway are registered with the dynamic domain name server, and a plurality of other terminal devices generate respective telephone numbers, and corresponding telephone numbers are generated according to preset rules. Domain name, and register the respective domain name with the respective network protocol address to the dynamic domain name server, wherein the terminal device includes: a terminal registration module, configured to generate a phone number of the terminal device, according to the preset rule Generating a domain name corresponding to the phone number of the terminal device, and registering the domain name of the terminal device with the network protocol address of the terminal device to the dynamic domain name server; the terminal number receiving module is configured to receive the called input by the user a phone number, the called phone number is a phone number of the called terminal device; the terminal address searching module is configured to generate the called phone number pair according to the preset rule The called domain name, and the hosted network protocol address corresponding to the called domain name is back-checked to the dynamic domain name server; the terminal signaling switching module is configured to: when the called terminal device is the network protocol voice network One of a plurality of other terminal devices in the road exchanges network protocol voice signaling with the called terminal device according to the called network protocol address; the terminal register is used to store the called domain name corresponding to the successful reverse check. The called network protocol address; and the terminal temporary storage judging module, configured to determine whether the called network protocol address corresponding to the called domain name is in the terminal register, when the terminal register has The called network protocol address corresponding to the called domain name directly obtains the called network protocol address from the terminal register. The terminal device of claim 4, wherein: the terminal address lookup module is further configured to: when the called terminal device is not one of a plurality of other terminal devices in the network protocol voice network The dynamic domain name server reversely checks the network protocol address of the preset gateway; and the terminal signaling switching module is further configured to use the network protocol address of the preset gateway and the preset gateway Switch network protocol voice signaling. The terminal device of claim 4, wherein the terminal registration module is further configured to add a preset value to the phone number of the terminal device when the registration is not successful, to obtain the updated phone number, based on the update The phone number generates an updated domain name, and the updated domain name and the network device address of the terminal device continue to be registered with the dynamic domain name server until the registration is successful. The terminal device of claim 4, wherein the terminal registration module is further configured to update the dynamic domain name server whenever the terminal device is rebooted or re-accessed to the network protocol voice network. The network protocol address of the terminal device. The terminal device of claim 4, wherein the telephone number of the terminal device is generated by using a hash algorithm based on a media access control address of the terminal device, and the hash algorithm is to take the media of the terminal device. The last six bits of the access control address, the preset rule includes combining the phone number and the preset string to form a corresponding domain name. A network protocol voice signaling exchange method is applied to a preset gateway device, wherein the preset gateway device is communicatively connected with a plurality of terminal devices and a dynamic domain name server, wherein the preset gateway device generates the preset gate The domain name of the router, and registering the domain name of the preset gateway with the network protocol address of the preset gateway to the dynamic domain name server, and the terminal devices generate respective telephone numbers according to preset rules. Generating the domain names corresponding to the respective phone numbers, and registering the respective domain names with the respective network protocol addresses to the dynamic domain name server, wherein the network protocol voice signaling exchange method comprises the following steps: Receiving a called telephone number from a public switched telephone network, the called telephone number being a telephone number of the called terminal device in the terminal devices; generating a called domain name corresponding to the called telephone number according to the preset rule; Whether there is a called network protocol address corresponding to the called domain name in the track register; if the gateway register address corresponding to the called domain name is in the gateway register, directly from the gateway Obtaining the called network protocol address in the temporary storage device; or if the called gateway network address corresponding to the called domain name is not in the gateway register, the dynamic domain name server is inspected to the called party The called network protocol address corresponding to the domain name; determining whether the called network protocol address is successfully detected; if the called network protocol address is successfully detected, the called network protocol address is determined according to the called network protocol address Exchanging network protocol voice signaling with the called terminal device; or rejecting the called telephone number address to the public switched telephone network if the called network protocol address is not successfully checked. A network protocol voice signaling exchange method is applied to a terminal device, wherein the terminal device is in communication connection with a plurality of other terminal devices, a preset gateway device, and a dynamic domain name server, wherein the preset gateway device generates the preset a domain name of the gateway, and registering the domain name of the preset gateway with the network protocol address of the preset gateway to the dynamic domain name server, and the terminal device and the plurality of other terminal devices generate respective telephones The number, the domain name corresponding to the respective phone number is generated according to the preset rule, and the respective domain name is registered with the dynamic domain name server with the respective network protocol address, wherein the network protocol voice signaling exchange method comprises the following steps: Receiving a called telephone number input by the user, the called telephone number is a telephone number of the called terminal device; generating a called domain name corresponding to the called telephone number according to the preset rule, and inspecting the dynamic domain name server The called network protocol address corresponding to the called domain name; when the called terminal device is one of a plurality of other terminal devices in the network protocol voice network Exchange network protocol voice signaling with the called terminal device according to the called network protocol address; and to the dynamic domain name when the called terminal device is not one of a plurality of other terminal devices in the network protocol voice network The server back-checks the network protocol address of the preset gateway; and exchanges network protocol voice signaling with the preset gateway according to the network protocol address of the preset gateway. The method for exchanging a network protocol voice signaling according to claim 10, further comprising the steps of: determining, by the terminal register, whether the called network protocol address corresponding to the called domain name is present; If there is a called network protocol address corresponding to the called domain name in the memory, the called network protocol address is directly obtained from the terminal register; or if the called domain name is not in the terminal register Corresponding called network protocol address, the virtual domain name server is inspected for the called network protocol address corresponding to the called domain name.