KR20070040493A - Method of interfacing between variety networks in the key-phone system - Google Patents

Abstract

The present invention relates to a method for interworking heterogeneous networks in a keyphone system for providing interworking services between heterogeneous networks using extension number classification between keyphone systems, and the extension number of each keyphone system according to the type of the network used by the corresponding keyphone system. Setting a prefix of each extension number as a network identifier for identifying; When receiving a number starting with the prefix from a caller, checking whether the prefix set in the calling keyphone system and the received prefix are the same; If the setup prefix and the input prefix are different, applying the information for the VoIP call with the incoming keyphone system to the internal VoIP application program according to the input prefix information in the calling keyphone system; The heterogeneous network is mixed by the VoIP application program comprising the step of sending the information for the VoIP call to the IP network layer according to the address of the network used by the incoming key phone system. In this case, processing separation can be performed, and thus, a keyphone system and VoIP call service located in a heterogeneous network can be performed, and a user can easily use a VoIP service.

Description

Interworking method between heterogeneous networks in keyphone system {Method of Interfacing between Variety Networks in the Key-phone System}

1 is a layout view showing the configuration of a conventional key phone system.

FIG. 2 is an exemplary view showing a call routing table in a key phone system in FIG. 1; FIG.

3 is a flowchart illustrating a method for interworking heterogeneous networks in a key phone system according to an exemplary embodiment of the present invention.

4 is a layout view illustrating a configuration of a key phone system in FIG. 3.

FIG. 5 is an exemplary diagram showing a call routing table in a key phone system in FIG. 4; FIG.

6 is a structural diagram showing a call prefix processing and a protocol in the keyphone system of FIG.

Explanation of symbols on the main parts of the drawings

30: Internet

41-44: keyphone system

41-1 to 41-3, 42-1 to 42-3, 43-1 to 43-3, 44-1 to 44-3: Extension phones

The present invention relates to a method for interworking between heterogeneous networks in a keyphone system, and more particularly, to a method for interworking between heterogeneous networks in a keyphone system to provide interworking services between heterogeneous networks using extension number classification between keyphone systems.

Looking at the configuration of a conventional key phone system, as shown in Figure 1, the Internet 10, a plurality of key phone systems (21 to 24) connected to each other via the Internet 10, and each corresponding key phone system 21 And a plurality of extension telephones 21-1 to 21-3, 22-1 to 22-3, 23-1 to 23-3, and 24-1 to 24-3, respectively, connected to ˜24). 1 is a layout view showing the configuration of a conventional key phone system.

As shown in FIG. 1, keyphone systems 21 to 24 are constructed for each of four sites of the Internet 10, and each extension number is divided into '1xx', '2xx', '3xx' and '4xx'. have.

For example, if a call routing table (or prefix table) corresponding to the first key phone system 21 is shown, the call routing table is shown in FIG. 2. At this time, the networks connected to each of the key phone systems 21 to 24 are all IPv4 networks.

Briefly looking at the operation of the conventional key phone system having the configuration as described above are as follows.

A user using the extension telephones 21-1 to 21-3 connected to the first key phone system 21 uses the extension telephones 23-1 to 23-3 connected to the third key phone system 23. When the user wants to connect a call to another user, the user who uses the extension phones 21-1 to 21-3 connected to the first key phone system 21 calls the extension phones 21-1 to 21-3. By simply dialing a number beginning with the prefix '2', the VoIP (Voice over IP) application (not shown in the drawing for convenience of explanation) in the first key phone system 21 is not supported. With the dialing number applied through the telephones 21-1 to 21-3, the VoIP call is performed by checking the IP address of the other party (ie, the third key phone system 23) through the Internet 10.

However, the key phone system in the prior art has a problem that there is no compatibility because there is no IPv6 stack and there is no call routing table to the IPv6 network, and when the IPv4 network and the IPv6 network are mixed, the processing cannot be performed. There was a problem.

In order to solve the problems described above, the present invention provides a method for interworking between heterogeneous networks in a keyphone system to perform inter-network interworking services using extension number classification between keyphone systems.

In addition, the present invention is suitable for interworking between keyphone systems arranged at sites located in different networks (that is, heterogeneous networks) through extension number classification of keyphone systems, thereby distinguishing processing even when different networks are mixed. To do this, the purpose is.

In addition, the present invention provides a VoIP interworking service between an IPv4 network and an IPv6 network at the time of switching to an IPv6 network through extension number classification of the keyphone system, thereby performing VoIP call service with a keyphone system located in an IPv4 network or an IPv6 network. It is possible to make it possible for a user to easily use a VoIP service.

The interworking method between heterogeneous networks in a keyphone system according to an embodiment of the present invention for achieving the above object corresponds to a network identifier for distinguishing the extension number of each keyphone system according to the type of the network used by each keyphone system. Setting a prefix of each extension number; When receiving a number starting with the prefix from a caller, checking whether the prefix set in the calling keyphone system and the received prefix are the same; If the setup prefix and the input prefix are different, applying the information for the VoIP call with the incoming keyphone system to the internal VoIP application program according to the input prefix information in the calling keyphone system; The VoIP application program is characterized in that it comprises the process of sending the information for the VoIP call to the IP network layer according to the address of the network used by the incoming key phone system to proceed with the VoIP call.

Preferably, the prefix setting process is characterized in that the prefix of each extension number is set to '8' when the network used by the keyphone system is IPv4 and '9' when IPv6.

Also, preferably, the VoIP call process may be performed when the network address used by the originating keyphone system is IPv4 and the network address used by the called keyphone system is IPv6. Forming a form for IPv6, characterized in that the VoIP call to the incoming key phone system side.

In the present invention, the IPv4 network is the mainstream, but in accordance with the depletion of the IP address and the increasing number of IPv6 networks for various application services, dual stacks of IPv4 and IPv6 networks are added to the key phone system. VoIP protocols such as 'H.323' and SIP also make it suitable for IPv6 networks. In addition, the present invention allows the keyphone system to be connected to the branch office or the headquarters via an IP network, and although each IP address may be used to use the VoIP service, the keyphone system has a unique extension number system that is unique to each keyphone system. When you call the number, it is converted to VoIP call for easy use.

In other words, in the standard, various protocols are defined for interworking between IPv4 and IPv6 networks, and an external device that performs each protocol must be added, or a header change or header encapsulation must have a separate overhead. In the present invention, the IPv4 / IPv6 dual stack is added to the key phone system, and the VoIP phone is divided into the key phone system of the IPv4 network and the IPv6 network by using the prefix of the extension number between the key phone systems under the dual stack of the IPv4 network and the IPv6 network. In this case, instead of simply dividing the extension number system by site, a prefix to distinguish between an IPv4 network and an IPv6 network is provided so that a VoIP call can be performed by selecting IPv4 or IPv6 according to the extension number. Provide users with transparent and simple services regardless of the IP address for each site or which network they use. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to the interworking method between heterogeneous networks in the key phone system according to an embodiment of the present invention with reference to the flowchart of FIG.

First, referring to the configuration of a key phone system for performing the interworking method between heterogeneous networks in the key phone system according to an embodiment of the present invention, as shown in FIG. 4, the Internet 30 and the Internet 30 are connected to each other. A plurality of telephone phones 41 to 44, and a plurality of extension telephones 41-1 to 41-3, 42-1 to 42-3, 43- respectively connected to the respective keyphone systems 41 to 44, respectively. 1 to 43-3, 44-1 to 44-3). 4 is a layout view illustrating a configuration of a key phone system according to an exemplary embodiment of the present invention.

As shown in Fig. 4, keyphone systems 41 to 44 are constructed at each of four sites of the Internet 30, and each extension number is different from the prior art, and the front prefix of each extension number is keyphone. A network identifier (for example, '8' and '9') is used to identify the type of network used by the systems 41 to 44.

For example, the first prefix of each extension number is divided into '8' and '9', and the division criteria are based on whether the network used by the corresponding keyphone systems 41 to 44 is an IPv4 network or an IPv6 network. .

If the call routing table (or prefix table) corresponding to the first key phone system 41 is shown, the call routing table is shown in FIG. 5. At this time, the network connected to each key phone system 41 to 44 is mixed with the IPv4 network and the IPv6 network, and the first and second key phone systems 41 and 42 are connected to the IPv4 network, and the third And fourth key phone systems 43 and 44 are connected to the IPv6 network.

In other words, in order to distinguish the extension numbers of the respective keyphone systems 41 to 44 according to the types of networks (for example, IPv4 and IPv6) used by the respective keyphone systems 41 to 44, they are shown in FIG. In the outgoing call prefix processing portion 61 provided in each of the keyphone systems 41 to 44 as described above, the type of network (for example, IPv4 and IPv6) used by the keyphone systems 41 to 44 is used. The first prefix of each corresponding extension number is set as a network identifier (for example, '8' and '9') and stored in the internal memory (step S31).

6 is a structural diagram showing a call prefix processing and a protocol in a key phone system according to an embodiment of the present invention, the configuration of the outgoing call prefix processing portion 61, and the VoIP application for the IPv4 and IPv6 62- 1, 62-2), Transmission Control Protocol (TCP) / UDP (User Datagram Protocol) 63, and IPv4 and IPv6 (64-1, 64-2).

Thereafter, the user (i.e. caller) using the extension telephones 41-1 to 41-3 (i.e., the calling extension telephone) connected to the first key phone system 41 (i.e., originating key phone system) is reminded. To connect a call to another user (i.e., called party) using extension telephones 43-1 to 43-3 (i.e., called extension phone) connected to third key phone system 43 (i.e., incoming key phone system). When the caller simply dials a number starting with the prefix starting with '92' using the calling extension telephones 41-1 to 41-3, the calling keyphone system 41 is provided. The outgoing call prefix processing portion 61 recognizes information input by the caller, that is, information of an input prefix (for example, an IPv4 prefix or an IPv6 prefix) (step S32).

In this case, as a result of the recognition in the 32nd step (S32), the first prefix of the user and the first prefix input by the caller are compared to check whether they are the same, that is, the network used by the calling key system 41 is used. Is compared with the type of the network used by the incoming key system 43 (step S33).

If each network type is the same in step 33 (S33), the operation is performed in the same manner as in the prior art (step S34). On the other hand, if the network types are different from each other, the outgoing call prefix is used. The VoIP application program 62-provided in the originating key phone system 41 with information for the VoIP call with the other party (i.e., the incoming key phone system 43) in accordance with the recognized input prefix information in the processing portion 61. 1, 62-2) (step S35).

Accordingly, the VoIP applications 62-1 and 62-2 transmit the IP to the IP network layer according to the network address (for example, IPv4 or IPv6) used by the incoming key phone system 43. By sending information for the VoIP call applied from the call prefix processing portion 61, the VoIP call is confirmed by confirming the IP address to the other party (i.e., the incoming key phone system 43).

In other words, since the address of the network used by the incoming keyphone system 43 is IPv6, the second VoIP application 62-2 configures the socket interface and the packet type for IPv6 (step S36). The call is advanced to the key system 43 (step S37).

As described above, the heterogeneous interworking method in the keyphone system according to an embodiment of the present invention adds an IPv4 / IPv6 dual stack to the keyphone system and performs a VoIP call with a keyphone system located in an IPv6 network by using an extension prefix of the keyphone system. It also enables VoIP services with keyphone systems located in existing IPv4 networks, and also allows users to easily use VoIP services by converting complex IPv6 addresses into simple prefixes.

As described above, according to the present invention, by using the extension number classification between the keyphone systems, by providing an interlocking service between each keyphone system arranged at a site located in this slave network, even when heterogeneous networks are mixed, processing can be performed. In addition, it can perform VoIP call service with key phone system located in heterogeneous network, and users can use VoIP service easily.

Claims (3)

Setting a prefix of each extension number as a network identifier for dividing the extension number of each keyphone system according to the type of the network used by the corresponding keyphone system; When receiving a number starting with the prefix from a caller, checking whether the prefix set in the calling keyphone system and the received prefix are the same; If the setup prefix and the input prefix are different, applying the information for the VoIP call with the incoming keyphone system to the internal VoIP application program according to the input prefix information in the calling keyphone system; The interworking method between heterogeneous networks in a keyphone system comprising the step of sending a VoIP call to the IP network layer in accordance with the address of the network used by the incoming keyphone system in the VoIP application program. . The method of claim 1, In the prefix setting process, the first prefix of each extension number is set to '8' when the network used by the keyphone system is IPv4 and '9' when the IPv6 is IPv6. Interlock method. The method of claim 1, The VoIP call process is performed when the network address used by the calling keyphone system is IPv4 and the network address used by the called keyphone system is IPv6. The interworking method between heterogeneous networks in a key phone system, characterized in that for making a VoIP call to the destination key phone system.

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