CN102891812A - Scheme for implementing cross-machine-frame media switching communication based on Internet protocol (IP) network - Google Patents
Scheme for implementing cross-machine-frame media switching communication based on Internet protocol (IP) network Download PDFInfo
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- CN102891812A CN102891812A CN2012103386550A CN201210338655A CN102891812A CN 102891812 A CN102891812 A CN 102891812A CN 2012103386550 A CN2012103386550 A CN 2012103386550A CN 201210338655 A CN201210338655 A CN 201210338655A CN 102891812 A CN102891812 A CN 102891812A
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Abstract
The invention discloses a scheme for implementing cross-machine-frame media switching communication based on an Internet protocol (IP) network, belongs to the technical field of information technical communication, relates to media gateway equipment and network switchboard equipment such as a compact peripheral component interconnect (CPCI) machine frame, an industrial control machine and a server, and aims to mainly achieve the effect of interaction of multimedia streams, such as voices and videos, among a plurality of sets of media gateway equipment under a large-capacity multimedia system environment. According to the scheme, the media switching capacity between the multimedia gateway equipment is realized by using an IP network communication technology (Ethernet communication technology). The scheme is mainly applied to a multimedia communication value-added service system; and an effective solution way is supplied to construction and capacity expansion of the large-capacity multimedia communication value-added service system.
Description
Technical field
The present invention relates to the information technology communication field, particularly relate to a kind of system of striding the communication of machine frame exchange of media, method and apparatus of IP based network.
Background technology
In communication field, increment service system and call center system are along with the progress of society, the development of science and technology, communication network and communicating terminal is widely used, there are two kinds of situations the application scenarios of many media gateway or switch can occur, a kind of is newly-built system, for the needs of system reliability, adopts distributed arrangement, many media gateway or switch can be shared each other and backuping each other, and guarantee the reliable robustness of system; Another kind of situation is along with the development of professional ability, and the capacity of these systems needs dilatation year by year, and expansion method commonly used increases media gateway and media server device exactly; Like this in this multimedia gateway system, can there be the situation of calling out from a media gateway incoming call and breathing out from another media gateway in call transfer service; Convention business meeting existence will join the same meeting-place from the participant side of different media gateway accesses; The multiple business scene needs to possess the function needs that media are crossed machine between the media gateway, usually media are crossed machine and can be crossed machine or trunk line is crossed machine by optical fiber between media gateway, but these are crossed the machine mode and all have many defectives, for example to cross the machine mode be to adopt the loop network structure to optical fiber, if the electricity went off for a media gateway, loop will not cut off; Trunk line is crossed the machine mode, and to cross the machine amount limited, and a root relay line can only be crossed machine 30 tunnel, also can't realize crossing between any two between many media gateway machine collocation simultaneously;
For the machine of the crossing problem between the above-mentioned media gateway, the present invention adopts the IP network mechanics of communication to realize among the media gateway group arbitrarily between any two large capacity, without opening circuit, fast, the efficient machine function of crossing.
Summary of the invention
Technical problem to be solved by this invention is a kind of system of striding the communication of machine frame exchange of media, method and apparatus of IP based network, crosses the drawback of machine mode and improves the usefulness that media between the media gateway are crossed the machine function to solve tradition.
For achieving the above object, the invention provides a kind of system of striding the communication of machine frame exchange of media of IP based network, comprise many media gateway devices, the network switch;
Described media gateway device, be used for: dock with communication network, carry out the transmission of communication signaling and communication medium, communication network comprises the communication networks such as PSTN, PLMN, NGN, IMS, and media gateway device can be finished the switching of speech channel and provide the multimedia capability such as voice, video for the various terminal uses under the communication network;
The described network switch is used for: connects system's various network device, comprises server, and media gateway node, communication switchboards etc. make it intercom mutually with the Ethernet form, finish relevant exchanges data.
The present invention also provides a kind of means of communication of striding the machine frame exchange of media of IP based network, comprising:
Can carry out direct network connection by crossover network cables between the voip unit of media gateway, also can carry out network connection by the network switch; When only having two media gateway devices in the system, just can be by carrying out direct network connection by crossover network cables, when only having the media gateway device that (comprises three) more than three in the system, just need to carry out network connection with the network connection form of Ethernet by the network switch.
Preferably have, in the said method, also comprise: when the voip unit that uses the network switch to media gateway connects, be necessary the network port division vlan (Virtual Local Area Network) that this voip unit is connected.
The present invention also provides a kind of device of striding the communication of machine frame exchange of media of IP based network, comprising:
Cross machine originating end module, be used for initiating the machine connection request to the machine of mistake receiving terminal module;
Cross machine receiving terminal module, be used for receiving the machine connection request and returned the machine connection response to the machine of mistake originating end module.
Can be found out by such scheme, among the present invention between the media gateway IP subnet by special use carry out media with the Ethernet connected mode and cross the machine communication, media gateway A initiated the machine request and submitted relevant excessively machine parameter to media gateway B, media gateway B received the parameter of machine request and originating end, carry out local terminal and cross the machine feature operation, and the machine of the crossing parameter of returning oneself is to media gateway A, media gateway A crosses the machine parameter to the opposite end that receives and processes, again by confirming to order the excessively machine function of finishing between two media gateway; Because this scheme is carried out communication by IP broadband LAN (100M or 1000M etc.), the excessively machine capacity between U.S. two media gateway can reach thousands of, has jumbo feature; Owing to used IP network in this programme, save the expense of laying-out, reduced the difficult problem that line upkeep brings, save cost, and be convenient to dispose, be easy to realize.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is system configuration schematic diagram in the embodiment of the invention one;
Fig. 2 is system configuration schematic diagram in the embodiment of the invention two;
Fig. 3 crosses machine connection building process schematic diagram in the embodiment of the invention one;
Fig. 4 crosses machine to connect the dismounting schematic flow sheet in the embodiment of the invention one.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment one, referring to Fig. 1.
The invention provides a kind of system and method for striding the communication of machine frame exchange of media of IP based network, described system comprises many media gateway devices and the network switch, wherein:
Described media gateway device, be used for: dock with communication network, carry out the transmission of communication signaling and communication medium, communication network comprises the communication networks such as PSTN, PLMN, NGN, IMS, and media gateway device can be finished the switching of speech channel and provide the multimedia capability such as voice, video for the various terminal uses under the communication network; Media gateway device must can be supported the voip communication capacity with the voip module in this example, disposes the separate subnet IP address information of every media gateway voip module;
The described network switch, be used for: connect system's various network device, comprise server, media gateway node, communication switchboards etc. make it intercom mutually with the Ethernet form, finish relevant exchanges data, this network switch is divided individual independently vlan in this example, connects the voip module of each media gateway.
The course of work of said system comprised mainly that machine connected foundation and the machine of being connected connects two processes of removing, and the machine of wherein crossing connects sets up process referring to Fig. 3, specifically may further comprise the steps:
Step (1), First media gateway device receive that the media of upper application module cross machine and connect and to set up request message CMD_CONNECT, in this message with local device information with want the facility information of the opposite end media gateway of machine connection;
Step (2), the First media gateway device is set up opposite equip. information in the request message according to connection and is found the address information of second media gateway in opposite end and trigger a connection and set up message and send to second media gateway, in this connection message with the relevant connection device additional information of First media gateway;
Step (3), second media gateway receive that the connection that the First media gateway is sent sets up request message, do Correlation method for data processing, and return relevant information to the First media gateway;
After step (4), First media gateway are received the connection corresponding message of second media gateway, do corresponding data and process, and initiate SIP call setup INVITE to second media gateway;
Step (5), second media gateway received the SIP setup requests, and replied this call request, returns SIP 200OK message to the First media gateway;
Step (6), it is mutual to set up rtp streaming between two media gateway;
Step (7), the connection request of First media gateway response upper layer module returns the success or not state;
The machine of crossing connects demolishing process referring to Fig. 4, specifically may further comprise the steps:
Step (1), First media gateway device receive that the media of upper application module cross machine and connect to remove request message CMD_DISCONNECT, in this message with local device information with want the facility information of the opposite end media gateway of machine connection;
Step (2), the First media gateway device finds the address information of second media gateway in opposite end according to the opposite equip. information in the connection request message and triggers a connection tear down message and sends to second media gateway, the connection device additional information of being correlated with the First media gateway in this message;
Step (3), second media gateway received the connection dismounting request message that the First media gateway is sent, and does Correlation method for data processing, and returns relevant information to the First media gateway;
Step (4), First media gateway are done corresponding data and are processed after receiving that response message is removed in the connection of second media gateway, and initiate request SIP call tear down BYE message to second media gateway;
Step (5), second media gateway received the request of SIP call tear down, and responded this request, returns to First media gateway SIP 200OK message, sends so two media gateway all stop rtp streaming;
Step (6), request is removed in the connection of First media gateway response upper layer module, returns the success or not state;
Embodiment two, referring to Fig. 2.
The invention provides a kind of system and method for striding the communication of machine frame exchange of media of IP based network, described system comprises two media gateway devices and crossover network cables, wherein:
Described media gateway device, be used for: dock with communication network, carry out the transmission of communication signaling and communication medium, communication network comprises the communication networks such as PSTN, PLMN, NGN, IMS, and media gateway device can be finished the switching of speech channel and provide the multimedia capability such as voice, video for the various terminal uses under the communication network; Media gateway device must can be supported the voip communication capacity with the voip module in this example, disposes the separate subnet IP address information of every media gateway voip module;
Described crossover network cables are used for: the voip module that connects these two media gateway in the system that only has two media gateway.
The course of work of said system comprised mainly that machine connect to set up and is connected machine and connect two processes of removing, and its process and the machine of crossing in the example two connect foundation and to be connected machine connection demolishing process consistent;
Therefore the system of striding the communication of frame exchange of media of a kind of IP based network provided by the invention, method and apparatus have following advantage.
(1) with low cost, it is convenient to dispose
Adoption Network switch of the present invention and general netting twine consist of the IP subnet and cross the machine interchange channel as the media between many media gateway, can on the existing LAN switch of system, cross machine for media gateway by standardized individual independently subnet, even if two media gateway only need a netting twine to get final product; Very convenient in the deployment, effectively reduce deployment and the maintenance workload of system;
(2) reliability is high
Because using independently, therefore the IP subnet is not subjected to impact and the interference of other network packet as the excessively machine path between the multimedia gateway; Because many media gateway generally all are to be placed in the interior same frame of same machine room or the adjacent frame, all are very near on the distance, do not have remote attenuation problem; In sum, adopt IP network to realize crossing the machine function between the media gateway, guaranteed high-quality exchange of media ability, have very high reliability.
(3) autgmentability is strong
Owing to use the ethernet ip network to cross the machine structure, can be easily so that the media gateway of increase incorporated in the loom net by netting twine, and quantitatively without limits, have very strong autgmentability.
Description by above embodiment of the method, the those skilled in the art can be well understood to the concrete implementation method of the present invention, mainly add that by relevant software module the mode of necessary hardware platform realizes, software module is the application software of media gateway, be mainly concerned with the module of voip aspect in this scope, be responsible for the voip communication technology and media thereof and cross machine coordination system function; Hardware aspect comprises media gateway device and the network switch; The part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: the various media that can be program code stored such as read-only memory (ROM), random access memory (RAM), magnetic disc or CD.
For system embodiment, because it is substantially corresponding to embodiment of the method, so relevant part gets final product referring to the part explanation of embodiment of the method.Device described above or system embodiment only are schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of present embodiment scheme.This area professional and technical personnel can reappear design on this programme airport, those of ordinary skill namely can be understood and be implemented in the situation of not paying creative work.
The above only is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the implementation of striding the communication of machine frame exchange of media of an IP based network is characterized in that, comprises media gateway device, the network switch;
Described media gateway device, be used for: dock with communication network, carry out the transmission of communication signaling and communication medium, communication network comprises the communication networks such as PSTN, PLMN, NGN, IMS, and media gateway device can be finished the switching of speech channel and provide the multimedia capability such as voice, video for the various terminal uses under the communication network;
The described network switch is used for: connects system's various network device, comprises server, and media gateway node, communication switchboards etc. make it intercom mutually with the Ethernet form, finish relevant exchanges data.
2. the implementation of striding the communication of machine frame exchange of media of an IP based network is characterized in that, comprising:
Can carry out direct network connection by crossover network cables between the voip unit of media gateway, also can carry out network connection by the network switch; When only having two media gateway devices in the system, just can be by carrying out direct network connection by crossover network cables, when only having the media gateway device that (comprises three) more than three in the system, just need to carry out network connection with the network connection form of Ethernet by the network switch.
3. method according to claim 2 is characterized in that, also comprises: when the voip unit that uses the network switch to media gateway connects, be necessary the network port division vlan (Virtual Local Area Network) that this voip unit is connected.
4. the implementation of striding the communication of machine frame exchange of media of an IP based network is characterized in that, comprising:
Communication protocol in transport layer between the media gateway voip unit is based on UDP, is SIP/RTP/RTCP in the communication protocol of application layer.
5. the implementation of striding the communication of machine frame exchange of media of an IP based network is characterized in that, comprising:
G.711 speech coding mutual between the media gateway voip unit mainly adopt, G.723 individual and G.729, Video coding adopts H263, H264 and MPEG4.
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| CN2012103386550A CN102891812A (en) | 2012-09-05 | 2012-09-05 | Scheme for implementing cross-machine-frame media switching communication based on Internet protocol (IP) network |
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Application publication date: 20130123 |