CN203289466U

CN203289466U - A remote network bridge supporting Ethernet data transmission on E1

Info

Publication number: CN203289466U
Application number: CN2013203381453U
Authority: CN
Inventors: 康清华
Original assignee: Chengdu Simai Science and Technology Development Co Ltd
Current assignee: Chengdu Simai Science and Technology Development Co Ltd
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2013-11-13
Anticipated expiration: 2023-06-14

Abstract

The utility model discloses a remote network bridge supporting Ethernet data transmission on E1. The remote network bridge comprises a protocol converting chip, an Ethernet PHY module, a random access memory SDRAM, an operating clock, and an E1 interface module. The Ethernet PHY module, the random access memory SDRAM, and the E1 interface module are all bidirectionally communicated with the protocol converting chip. The operating clock is unidirectionally communicated with the protocol converting chip. By the above structure, a problem that an Ethernet interface is not connected with an E1 interface directly is compensated by the random access memory SDRAM. Data is transmitted to a wide area network in speed adapting to the wide area network.

Description

A kind of remote bridge of supporting the upper transmission of E1 Ethernet data

Technical field

The utility model relates to the remote bridge field, is specifically related to the remote bridge of the upper transmission of a kind of E1 of support Ethernet data.

Background technology

Bridge couples together two similar networks, and the circulation of network data is managed.It works in data link layer, distance or scope that not only can extended network, and performance, reliability and the fail safe that can improve network.After two networks connected by bridge, bridge received the packet that network A sends, and checked the address in packet, if address belongs to network A, it is just abandoned it, and on the contrary if the address of network B, it just continues to send to network B.Can utilize the bridge isolation information like this, same network number is divided into a plurality of network segments (belonging to same network number), isolate the safe network segment, prevent the user's unauthorized access in other network segments.The function of bridge is similar to repeater extending on network span, yet it can provide intelligent Connection Service, namely according to the end address of frame, is in which network segment and forwards and filtering.Bridge realizes having bridge, translating bridge, encapsulation bridge, source routing to select bridge by " self study " to the understanding of the website network segment of living in.In existing bridge, Ethernet interface speed is 10 or 100Mbit/s, and far above the 2.048Mbit/s of E1 interface, Ethernet interface can not directly dock with the E1 interface, there is speed difference between the two, can not regulate accordingly according to the speed on wide area network.

The utility model content

The utility model has overcome the deficiencies in the prior art, the remote bridge of the upper transmission of a kind of E1 of support Ethernet data is provided, make up by random asccess memory SDRAM the problem that Ethernet interface does not directly dock with the E1 interface, the speed that adapts to it on wide area network sends.

For solving above-mentioned technical problem, the utility model is by the following technical solutions: a kind of remote bridge of supporting the upper transmission of E1 Ethernet data, comprise protocol conversion chip, ethernet PHY module, random asccess memory SDRAM, work clock and E1 interface module, described ethernet PHY module, random asccess memory SDRAM and E1 interface module all with protocol conversion chip diconnected, described work clock and protocol conversion chip unilaterally connected.

Further, be connected by Media Independent Interface MII between described ethernet PHY module and protocol conversion chip.

Further, described ethernet PHY module connects local area network terminal.

Further, described E1 interface module connecting wan terminal.

Further, the model of described E1 interface module is XRT82D20.

Further, the model of described ethernet PHY module is ACT101-TF.

Compared with prior art, the beneficial effects of the utility model are:

1, the utility model is by connecting random asccess memory SDRAM on the protocol conversion chip, make up the speed difference between ethernet PHY module and E1 interface module, store the high-speed data that enters with the random asccess memory SDRAM on bridge equipment, then the speed that adapts to it on wide area network sends, and solves the problem that Ethernet interface does not directly dock with the E1 interface.

2, the E1 interface module is completed the signal on the E1 circuit is carried out impedance matching and reversal, and is converted to HDLC frame and function conversely.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further elaborated, embodiment of the present utility model is not limited to this.

Embodiment:

As shown in Figure 1, the utility model comprises protocol conversion chip, ethernet PHY module, random asccess memory SDRAM, work clock and E1 interface module, E1 interface module connecting wan terminal, and the model of E1 interface module is XRT82D20.The model of ethernet PHY module wherein is ACT101-TF.The ethernet PHY module of the present embodiment, random asccess memory SDRAM and E1 interface module all with protocol conversion chip diconnected, be connected by Media Independent Interface MII between ethernet PHY module and protocol conversion chip, the ethernet PHY module connects local area network terminal.Work clock wherein and protocol conversion chip unilaterally connected.

Add random asccess memory SDRAM to store the high-speed data that enters between ethernet PHY module and E1 interface module, the speed that then adapts to it on wide area network sends, the problem of avoiding Ethernet interface directly with the E1 interface, not dock.Ethernet PHY module is wherein completed the sending and receiving of Ethernet data bag.E1 interface module is wherein completed the signal on the E1 circuit is carried out impedance matching and reversal, and is converted to HDLC frame and function conversely.Protocol conversion chip model is xBridge2.0.

Just can realize this utility model as mentioned above.

Claims

1. support the upper remote bridge that transmits Ethernet data of E1 for one kind, it is characterized in that: comprise protocol conversion chip, ethernet PHY module, random asccess memory SDRAM, work clock and E1 interface module, described ethernet PHY module, random asccess memory SDRAM and E1 interface module all with protocol conversion chip diconnected, described work clock and protocol conversion chip unilaterally connected.

2. a kind of remote bridge of supporting the upper transmission of E1 Ethernet data according to claim 1 is characterized in that: be connected by Media Independent Interface MII between described ethernet PHY module and protocol conversion chip.

3. a kind of remote bridge of supporting the upper transmission of E1 Ethernet data according to claim 1 and 2, is characterized in that: described ethernet PHY module connection local area network terminal.

4. a kind of remote bridge of supporting the upper transmission of E1 Ethernet data according to claim 1, is characterized in that: described E1 interface module connecting wan terminal.

5. according to claim 1 or 4 described a kind of remote bridges of supporting the upper transmission of E1 Ethernet data, it is characterized in that: the model of described E1 interface module is XRT82D20.

6. a kind of remote bridge of supporting the upper transmission of E1 Ethernet data according to claim 1, it is characterized in that: the model of described ethernet PHY module is ACT101-TF.