CN201846361U

CN201846361U - Enterprise VoIP (Voice over Internet Phone) service accelerating system based on overlay network technology

Info

Publication number: CN201846361U
Application number: CN201020593722XU
Authority: CN
Inventors: 袁佳宁; 黄海
Original assignee: LANXIN NETWORK CO Ltd
Current assignee: LANXIN NETWORK CO Ltd
Priority date: 2010-11-05
Filing date: 2010-11-05
Publication date: 2011-05-25
Anticipated expiration: 2020-11-05

Abstract

The utility model discloses an enterprise VoIP (Voice over Internet Phone) service accelerating system based on overlay network technology, comprising a plurality of access servers, an overlay network formed by connecting the plurality of access servers, a user terminal, an enterprise VoIP gate and an enterprise VoIP user, wherein the user terminal and the overlay network are in VPN (Virtual Private Network) connection by an internet; the user terminal comprises two standard interfaces; and one interface is connected with the internet and the other one is connected with the enterprise VoIP gate. By adopting the enterprise VoIP service accelerating system, VoIP data transmission delay between branch mechanisms of enterprises can be reduced, and VoIP speech quality of the enterprises can be improved.

Description

The VoIP of enterprise service accelerating system based on the overlay network technology

Technical field

The utility model relates to areas of information technology, the VoIP of the enterprise service accelerating system that specifically comprehensive internet technique, overlay network technology and VPN technologies propose.

Background technology

VoIP(Voice Over IP and VoIP Protocols), promptly refer on IP network, use the mode transferring voice of IP agreement with packet.Use the VoIP agreement, no matter be that internet, enterprises Internet or local area network (LAN) can be realized voice communication.In the network of a use VoIP, voice signal compresses and converts IP to and wrap through digitlization, transmits in IP network then.This technology is the valued added applications on a kind of the Internet at first, and form is also comparatively simple.Along with popularizing of the Internet, its using value in commercial operation be it is found that a lot of emerging telecom operators are incorporated into voip technology in the telecom operation, and have obtained explosive growth in last several years of eighties of last century.

The advantage of the maximum of VoIP is to adopt the environment of Internet and global ip interconnection widely, voice-and-data be integrated in one throw the net in, this means only needs construction and safeguards that a network just can provide the business of a plurality of network supports in the past, and the cost of construction and O﹠M has all reduced.VoIP possesses the ability of compress speech, bandwidth statistic multiplexing, and is higher with respect to the legacy network bandwidth availability ratio, saved transmission cost.

Because IP is used for transmitting data,, can only provide effective service so it can not provide real-time to guarantee.For making the user can accept voice communication on the IP, the packet time-delay need be less than a limiting value.But the quality of IP bearer network still has a lot of not solutions now, so the voice quality of VoIP also can't be guaranteed fully.

Summary of the invention

The purpose of this utility model is to postpone for the VoIP of enterprise service provides a kind of reduction, improves the Internet accelerating system of voice call quality.

The purpose of this utility model is achieved in that

A kind of VoIP of enterprise service accelerating system based on overlay network, this system of characteristics formula comprises: several access servers, user terminal, enterprise's voip gateway and the voip user of enterprise, by the Internet continuous formation overlay network, user terminal is set up the Virtual Private Network passage by the Internet and several access servers between described several access servers; Described user terminal comprises two standard interfaces, and one of them interface links to each other with the Internet, and another interface links to each other with the enterprise voip gateway.

Described overlay network is being linked to each other by unicast mechanisms between the node on the basis of bottom-layer network in twos by many access servers.

Link to each other by VPN between described each user terminal (103) and several access servers (101).

VoIP between described any two voip users of enterprise (105) connects and is divided into three sections, the one, the VPN passage between user terminal (103) and the access server (101), the 2nd, the optimization path that overlay network (102) provides, the 3rd, the VPN passage between access server of the other end (101) and the corresponding user terminal (103).

The utility model has adopted following technology:

1, overlay network (Overlay Network, also claim nerve of a covering, overlay network) technology, overlay network is one and is positioned on one or more already present network independently virtual network, promptly by unicast mechanisms between the node main frame is being linked to each other in twos on the basis of bottom-layer network, forming virtual a, network independently, just looks like the new network of one deck that superposeed on original network.Can think that Internet is exactly a kind of overlay network,, increase the Internet protocol head for all bags because Internet is based upon on all kinds of local area network (LAN)s (as Ethernet), in order to connecting the main frame in each local area network (LAN), the new network of the one deck that forms.

2, virtual private network technology (VPN, Virtual Private Network), VPN utilizes the Internet or the infrastructure of other the Internet to create the tunnel for the user, utilize technology such as encryption, authentication to guarantee the fail safe of VPN network, thereby safety and the function guarantee the same with dedicated network can be provided.

The utility model is made up of user terminal, internet, access server and the Internet application server.Wherein undertaken by the internet between the access server interconnected, interconnected in twos between the access server by setting up secure tunnel, constitute the overlay network (Overlay Network) of ad hoc structure.User terminal is installed in the user network, sets up VPN by internet and access server and is connected, thereby be linked in the overlay network by access server.

Access server in the utility model can be positioned at the optional position of the Internet, each access server is all surveyed the quality in the Internet path between it and other access servers, sets up the path quality table that comprises parameters such as packet loss, time delay and throughput by testing result.The user is during from the inserting more arbitrarily of overlay network, this access server can be according to the different purpose application server that inserts the user, from the good path quality table of previous foundation, select suitable path, user's data stream just can be transmitted according to selected path then, gives the Internet application server data delivery by last access server.

Access server of the present utility model adopts the server hardware of dependable performance, and Windows operating system or Unix/Linux operating system are installed, and the software that is used to provide the software of VPN access service and is used to make up overlay network (Overlay) is installed simultaneously.

All access servers in the utility model can be accepted the connection request of user terminal as VPN Server.Owing to set up overlay network between all access servers, so overlay network also can be regarded as a kind of complete distributed VPN network by secure tunnel.Such structure has realized load balance between the access server, has improved the VPN network throughput.Simultaneously certain access server need to safeguard, upgrade or break down can't work in, can proper communication between other access server, thereby solved Single Point of Faliure, improved the robustness and the reliability of whole VPN network based on user's tradition VPN Server.

Be connected the security key management technology that adopted between user terminal and the access server, the both possesses the X.509 digital certificate that control centre issues, before connecting, to carry out the digital certificate checking, have only by checking and just can connect, just can carry out transfer of data then, the data of transmitting between user terminal and the access server are all passed through SSL and are encrypted.These safety measures can guarantee the user's data fail safe.

The user terminal of this utility model adopts embedded design, uses special-purpose high speed embedded chip, and highly integrated, compact design of electronic circuits is provided with two standard RJ45 interfaces.This user terminal prepackage embeds linux system, and embedded WebService can carry out telemanagement by browser, adopts ICP/IP protocol to carry out message transmission simultaneously, uses simply, has very strong scene operation high reliability and high performance price ratio.

The utility model can reduce the VoIP data transfer delay between the enterprise branch office, improves the VoIP of enterprise speech quality.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is an application schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are elaborated.

Consult Fig. 1, Fig. 2, the utility model is based on the internet framework.In each branch of enterprise, user terminal 103 inserts between enterprise customer's the voip gateway 104 and the Internet in the mode of series connection.User terminal 103 is provided with the RJ-45 interface of two standards, and one of them is as the Local Area Network interface, links to each other with enterprise voip gateway 104, and another mouthful links to each other with the Internet as wide area network (WAN) interface.User terminal 103 is operated under the bridge pattern, so the user needn't reset and revise route, and the voip gateway 104 in user's legacy network does not need to carry out any modification yet, can not influence the normal use of network in layoutprocedure.After finishing necessary configuration, the user terminal 103 that is installed in each each branch of enterprise can be set up VPN with overlay network 102 automatically and be connected.

Being connected of user terminal 103 and overlay network 102 be to be connected and to finish by setting up VPN with access server 101 nearby, connection procedure is as follows:

1) connection speed of user terminal 103 automatic detections and each access server 101 is selected the fastest access server of connection speed then, proposes the access request to this access server, and the digital certificate of user terminal is provided simultaneously;

2) access server 101 is verified customer digital certificate after receiving the access application of user terminal 103, if checking does not insert request by refusing user's then, if reply by then sending to accept to insert to user terminal;

3) setting up VPN with access server 101 after user terminal 103 receives and accepts to reply is connected.

When the user 105A of the A of enterprise branch office calls out the B of enterprise branch office by voip gateway 104A, the voip gateway 104A of enterprise can be converted to voice signal the IP packet, and by the VPN channel transfer between user terminal 103A and the access server 101A to overlay network 102.What overlay network 102 connected at the user terminal 103B that determines the called B of branch is after the access server 101B, can be path that data transfer delay is minimum of planning between 101A and these two access servers of 101B in overlay network, voice IP packet is transferred to 101B from 101A.Voice IP packet is by the voip gateway 104B of the VPN channel transfer between the user terminal 103B of access server 101B and the B of branch to the B of branch then, by it IP packet is converted into voice signal, finally realizes the VoIP conversation between the enterprise branch office.

Because what voice IP data packet transmission was adopted is the minimum path of delay that overlay network 102 is planned, therefore can reduces the VoIP conversation delay between the enterprise branch office greatly, thereby the speech quality of VoIP is improved.

Claims

1. the VoIP of enterprise based on overlay network serves accelerating system, it is characterized in that this system comprises: several access servers (101), user terminal (103), enterprise's voip gateway (104) and the voip user of enterprise (105), by the Internet continuous formation overlay network (102), user terminal (103) is set up the VPN(Virtual Private Network) passage by the Internet and several access servers (101) between described several access servers (101); Described user terminal (103) comprises two standard interfaces, and one of them interface links to each other with the Internet, and another interface links to each other with enterprise's voip gateway (104).

2. the VoIP of the enterprise service accelerating system based on overlay network according to claim 1 is characterized in that overlay network (102) is being linked to each other by unicast mechanisms between the node on the basis of bottom-layer network in twos by many access servers (101).

3. the VoIP of the enterprise service accelerating system based on overlay network according to claim 1 is characterized in that linking to each other by VPN between each user terminal (103) and several access servers (101).

4. the VoIP of the enterprise service accelerating system based on overlay network according to claim 1, it is characterized in that the VoIP connection between any two voip users of enterprise (105) is divided into three sections, the one, the VPN passage between user terminal (103) and the access server (101), the 2nd, the optimization path that overlay network (102) provides, the 3rd, the VPN passage between access server of the other end (101) and the corresponding user terminal (103).