CN201388200Y - Multi-service access SDH optical transmission set - Google Patents
Multi-service access SDH optical transmission set Download PDFInfo
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- CN201388200Y CN201388200Y CN200820124741U CN200820124741U CN201388200Y CN 201388200 Y CN201388200 Y CN 201388200Y CN 200820124741 U CN200820124741 U CN 200820124741U CN 200820124741 U CN200820124741 U CN 200820124741U CN 201388200 Y CN201388200 Y CN 201388200Y
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Abstract
The utility model discloses a multi-service access SDH optical transmission set, which includes an SDH processing unit, an E1 interface processing unit, an Ethernet interface processing unit, a clock processing unit, a network management channel processing unit and the like. A system is equipped with an E1 interface, an Ethernet interface, an STM-1 optical interface, a network management interface and the like, and can directly access a backbone network through the STM-1 optical interface, form a simple point-to-point network, and realize the E1 service and Ethernet service access and transmission. The set can also be taken as an E1/FE protocol converter, and organically combines the SDH optical transmission set with the protocol converter; and in addition, the network management channel processing unit can stride across a backbone SDH to establish various network management channels in a customer network, and improve the reliability of network management communication, and the usage modes are flexible and various, so that the cost is saved efficiently for users.
Description
Technical Field
The utility model relates to a telecommunications equipment especially relates to a multiservice inserts SDH optical transmission equipment.
Background
The SDH (Synchronous Digital Hierarchy) technology is a core technology of current communication infrastructure, and SDH devices currently running in a network account for more than 80% of the total amount of a transmission system. Therefore, the SDH-MSTP (Multi-Service Transfer Platform, SDH-based Multi-Service transport Platform) still occupies the dominant position of the communication network construction for a considerable period of time, providing richer and more economical Multi-Service carrying capacity. In addition, with the rapid development of the transport IP data service, it is also becoming a market space choice to rapidly construct broadband ethernet data networks using the abundant E1 resource existing in public networks.
In the prior art, a common optical transmission device does not have the functions of multi-service support, high capacity, easy expansion and the like, a common E1/FE protocol converter can only transmit through E1, and if optical transmission is realized, two devices, namely a protocol converter and optical transmission, need to be equipped at the same time, which increases investment and increases the risk of generating faults.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multiservice inserts SDH optical transmission equipment, this equipment collect SDH optical transmission equipment and protocol converter (FE/nxE 1) function as an organic whole, can realize multiservice and insert and transmit, high-efficient economy, and the use is nimble various, can effectively reduce equipment cost, practices thrift the spending for the user.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a multi-service access SDH optical transmission equipment, which comprises an SDH processing unit, an E1 interface processing unit and an Ethernet interface processing unit;
the optical transmission device is provided with the following interfaces: e1 service interface, Ethernet service interface, STM-1 optical interface;
the E1 service interface is connected with the E1 interface processing unit;
the Ethernet service interface is connected with the Ethernet interface processing unit;
and the STM-1 optical interface is connected with the SDH processing unit.
By the above technical scheme provided by the utility model, the utility model discloses a multiservice inserts SDH optical transmission equipment, owing to be equipped with E1 interface, ethernet interface, STM-1 optical interface, can directly insert backbone network through STM-1 optical interface, constitute some simple networks to some, can insert E1 business and ethernet business etc. through E1 interface and ethernet interface, realize multiservice access and transmission; the E1 interface processing unit and the ethernet interface processing unit can also convert the optical transmission device into a protocol converter for use. The SDH optical transmission equipment and the function of a protocol converter (FE/nxE 1) are integrated, multi-service access and transmission can be realized, the efficiency and economy are realized, the use modes are flexible and various, the equipment cost can be effectively reduced, and the expenditure is saved for users.
Drawings
Fig. 1 is a schematic block diagram of a multi-service access SDH optical transmission apparatus of the present invention;
FIG. 2 is a schematic view of the structure of a star-shaped mesh tube channel in the present invention;
fig. 3 is a schematic view of the structure of a channel of a chain mesh tube according to the present invention.
Detailed Description
The utility model discloses a multiservice inserts SDH (Synchronous Digital Hierarchy), its preferred embodiment is shown as figure 1, including SDH processing unit, E1 interface processing unit, ethernet interface processing unit, E1 interface processing unit and ethernet interface processing unit can convert this optical transmission equipment into protocol converter and use;
the optical transmission device is provided with the following interfaces:
e1 service interface: for accessing E1 traffic;
ethernet service interface: used for accessing Ethernet service;
STM-1 optical interface: for connection to an SDH network via optical fibre.
The above-mentioned E1 service is implemented by configuring point-to-point bidirectional E1 channels in the SDH network, and specifically, point-to-point bidirectional E1 channels are implemented by cross-connection units of network elements selected in the SDH network.
The mapping of the Ethernet service adopts a private protocol EoE encapsulation, the Ethernet encapsulation is sequentially encapsulated in NxE 1, and N is more than or equal to 1 and less than or equal to 16. Ethernet traffic mapping is encapsulated using the proprietary protocol EoE, which enables ethernet data to be transported in multiple es 1. And has the function of automatically adjusting bandwidth, normally Ethernet packets are sequentially packaged into N E1, and when a transmission channel of the E1 fails, the equipment only reduces the data throughput rate without interrupting the transmission of data. When the transmission channel failure is recovered, the ethernet bandwidth is automatically increased.
The multi-service access SDH optical transmission equipment can also be provided with a network management interface for connecting with a network management computer.
The system can also comprise a network management channel processing unit which is used for setting a network management channel, and the network management computer can cross the backbone SDH network through the network management channel and is connected with the remote SDH equipment.
The network management channel may comprise one or more of a DCC network management channel or an E1 network management channel or an ethernet network intranet channel.
The network management computer can be respectively connected with the plurality of remote SDH devices to form star connection; or, the network management computer is connected with a plurality of remote SDH devices in series to form chain connection.
The multi-service access SDH optical transmission equipment can also be provided with an alarm output interface, a power interface and the like.
At least one of the following clock units may also be included: internal clock, external clock, STM-1 line clock, and E1 interface clock.
The multi-service access SDH optical transmission equipment can also be provided with a function mode dial switch which is used for directly realizing the setting of the function mode of the equipment (not through the setting of network management software).
The utility model discloses a multiservice inserts SDH optical transmission equipment has TDM business and broadband data's unified access, assembles, exchange and management function, is towards the comprehensive access optic fibre transmission platform that the traditional business of telecommunications and broadband data service used, can adapt to the fusion trend of voice and data service in metropolitan area network and various private networks. The network topology structure of point-to-point, chain type or star type can be provided, a simple network of point-to-point can be independently constructed, and the access of services comprising E1, Ethernet and the like can be provided.
One specific embodiment:
the optical interface has 1 STM-1 line optical interface, and can be butted with any standard STM-1 optical interface, directly accessed into a backbone network, or formed into a point-to-point simple network, etc. Can provide 8 paths of E1 and 4 paths of 100Base-T Ethernet (EoE type) services, is a multi-service terminal type device, and can provide a plurality of service interfaces such as E1, FE and the like;
the standard STM-1 optical interface can provide various interface options such as single-fiber transmission, different wavelengths, luminous power and the like;
the E1 interface meets ITU-T G.703 recommendation, and has the functions of on-line error code monitoring and loopback test;
the Ethernet service mapping adopts a private protocol EoE for encapsulation, and the Ethernet packets are sequentially encapsulated in NxE 1 (N is more than or equal to 1 and less than or equal to 16);
4 Ethernet interfaces support VLAN division;
the service route can be set by a hardware dial-up or by network management software, and is flexible to use;
SNMP (10Base-T) network management interface;
the network management channel can be a DCC network management channel or an E1 network management channel or an Ethernet network intranet channel;
rich alarm indications, including AC power down indication alarms;
a 19 inch 1U standard cabinet;
the power supply is in a dual mode, and a switch selects a-48V direct current power supply mode or a 100-240V wide-range alternating current power supply mode;
and online upgrade updating and first-level version rollback of a bottom layer program and an FPGA program are supported.
The functions of the various parts of the embodiments of the present invention are explained in detail as follows:
e1 service settings:
a point-to-point bidirectional E1 path may be configured in the network. The configuration of various E1 channels is realized by cross connection of network elements.
It can set service route and set cross connection units of all network elements one by one, so that it can freely set various routes to maximum extent, and can select network elements one by one and add or delete correspondent channels. Each channel has a name and specifies the source-sink relationship to which the channel corresponds. Here, the source-sink relationship is peer-to-peer with respect to the bi-directional channel.
Setting Ethernet service:
the Ethernet service interfaces belong to the same Ethernet switching unit and share one cascade interface. For the cascade port, N E1 may be set to form a virtual cascade group VCG, N E (1, 16). The VCG can set up virtual cascade pages, and set up routes for the channels after the virtual cascade groups are set up for the cascade ports.
The utility model provides an ethernet interface's mode of operation supports auto-negotiation, 100M full duplex, 100M half duplex, 10M full duplex and 10M half duplex mode. Various working modes, flow control and various GFP control of the Ethernet interface, such as setting of channel scrambling codes and the like, can be realized through an Ethernet control page.
The 4 ethernet interfaces can be divided into ethernet Virtual Private network vlan (ethernet Virtual Private area network), and set priority, thereby realizing service isolation of the 4 ethernet interfaces, ensuring user security, and realizing priority control.
The above is setting E1 and ethernet traffic by the network management software.
The utility model discloses a multiservice inserts SDH optical transmission equipment can also directly set up E1 business and ethernet business through the hardware dial-up and occupy the route of light channel or set up ethernet and E1 interface butt joint, uses as E1/FE protocol converter.
Setting a network management channel:
when the network management computer is connected across the third-party SDH equipment, the channels D1-D3 may be already occupied or the channels DCC cannot be provided, and at this time, other network management channels must be established in the guest network. The utility model discloses a multiservice inserts SDH optical transmission equipment provides 3 kinds of network management passageways and can select: different D bytes in DCC, or a built-in E1 network management channel, or an Ethernet network management channel. The built-in E1 network management channel can be distributed to any VC12 in STM-1 or any E1 interface of a specified device. The Ethernet network channel is an Ethernet encapsulated Ethernet network, and each E1 channel can transmit monitoring information while transmitting service, so that no extra bandwidth is occupied.
When it is necessary to implement network management on distributed SDH subnets across a backbone SDH network, a network management channel needs to be established in a guest network, and the network management channel has several topology modes:
star network pipe path, as shown in fig. 2:
the star path topology needs to establish a plurality of E1 or DCC paths in the guest network to connect the gateway nodes and the network management access points of each sub-network. The E1 network management channel has the advantages of richer resources than DCC channel, and it can provide protection for each network management channel through backbone SDH network, and the channel configuration is easier. When the star topology is adopted, each gateway node is configured with a bidirectional E1 or DCC network management channel.
Chain-shaped network pipe channels, as shown in fig. 3:
compared with the star topology, the chain topology occupies fewer E1 or DCC channels of the guest network, and each gateway node needs to be configured with two bidirectional network management channels.
By establishing a channel between the first node and the last node, the chain can be converted into a ring, the problem that a single point fails to break the link can be solved, and the reliability of network management communication is improved to a certain extent.
Clock setting:
the normal operation of the SDH network depends on the quality of the whole network synchronization. May be synchronized to different clock sources including an internal oscillator clock, an optical line clock, and an E1 interface clock (from either the first or second E1 input). When a network is formed, all network elements on the network can be synchronized to the same clock source.
When networking is independent, a network element can be assigned to operate as an internal oscillation source on the network, and all other nodes are synchronized on a line clock transmitted through an optical interface. When connecting to a higher level network, the gateway node should get timing from the optical interface or E1 interface of the higher level network as a synchronization source for the whole subnet.
When a node has multiple clock inputs, the priority of the individual clock sources may be specified in a certain order. A device may be given 3 clock source priorities. When the high priority clock is lost or the clock performance is degraded, the clock of the next priority is automatically switched to according to the setting. And when all the set clocks are lost, entering a clock holding mode. The network element node which selects the local oscillation source cannot set other priority clocks.
The switching of the network element clock can be based on the preset clock priority, and also can be based on the clock grade, that is, the network element automatically selects the clock with higher synchronization grade by using the synchronization status byte S1 in the SDH section overhead. The method is to enable the S1 byte at which time the priority setting will no longer work. Since the S1 instruction comes from the optical interface, enabling this option will no longer use the E1 tributary clock, applicable to all non-clock source nodes.
The node as the clock source does not enable the S1 byte, regardless of whether its clock is from the optical interface or the E1 interface, but should set the clock source priority.
The utility model discloses based on the SDH platform, can be through STM-1 optical interface direct access backbone network, or constitute some simple network etc. to the point to can insert E1 business and ethernet business etc. through E1 interface and ethernet interface, realize that many businesses insert and transmit. The grid-connected pipe channel setting unit can cross the backbone SDH to establish various network management channels in the customer network, thereby improving the reliability of network management communication; or when the Ethernet protocol converter is used as a protocol converter, Ethernet service can be transmitted through an E1 line, and protocol conversion between 1-8E 1 interfaces and 10/100Bse-Tx Ethernet interfaces is realized. The device integrates SDH optical transmission equipment and an E1/FE protocol converter into a whole, has flexible and various use modes, and can effectively save cost for users.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (8)
1. A multi-service access SDH optical transmission device is characterized by comprising an SDH processing unit, an E1 interface processing unit and an Ethernet interface processing unit;
the optical transmission device is provided with the following interfaces: e1 service interface, Ethernet service interface, STM-1 optical interface;
the E1 service interface is connected with the E1 interface processing unit;
the Ethernet service interface is connected with the Ethernet interface processing unit;
and the STM-1 optical interface is connected with the SDH processing unit.
2. The multi-service access SDH optical transmission apparatus of claim 1, wherein the STM-1 optical interface is connected to an SDH network through optical fiber, and wherein the SDH network is configured with a point-to-point bidirectional E1 channel.
3. The multi-service access SDH optical transmission device of claim 1, wherein the system is provided with a network management interface, and the network management interface is connected with a network management computer.
4. The multi-service access SDH optical transmission device of claim 3, comprising a network management channel processing unit, wherein the network management computer is connected to the remote SDH optical transmission device across the backbone SDH network through a network management channel set by the network management channel processing unit.
5. The multi-service access SDH optical transmission device of claim 4, wherein the network management computer is connected to a plurality of the remote SDH optical transmission devices, respectively; or,
and the network management computer is connected with the plurality of remote SDH optical transmission devices in series.
6. The multi-service access SDH optical transmission apparatus according to claim 1, wherein the optical transmission apparatus is provided with an alarm output interface.
7. The multi-service access SDH optical transmission apparatus of claim 1, comprising at least one clock unit of:
internal clock, external clock, STM-1 line clock, and E1 interface clock.
8. The multi-service access SDH optical transmission apparatus of claim 1, wherein the optical transmission apparatus is provided with a functional mode dial-up switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820124741U CN201388200Y (en) | 2008-12-16 | 2008-12-16 | Multi-service access SDH optical transmission set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200820124741U CN201388200Y (en) | 2008-12-16 | 2008-12-16 | Multi-service access SDH optical transmission set |
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| CN201388200Y true CN201388200Y (en) | 2010-01-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977186A (en) * | 2010-10-19 | 2011-02-16 | 珠海市佳讯实业有限公司 | Device for realizing synchronous transport module level-1 (STM-1) multipath Ethernet over E1 conversion |
| CN104539409A (en) * | 2014-12-24 | 2015-04-22 | 深圳市邦彦信息技术有限公司 | Method and system for adapting multi-path Ethernet to multi-path E1 channel |
| CN106210654A (en) * | 2016-08-16 | 2016-12-07 | 安徽省瑞鼎电子技术有限公司 | Network communicating system based on SDH technology |
-
2008
- 2008-12-16 CN CN200820124741U patent/CN201388200Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977186A (en) * | 2010-10-19 | 2011-02-16 | 珠海市佳讯实业有限公司 | Device for realizing synchronous transport module level-1 (STM-1) multipath Ethernet over E1 conversion |
| CN101977186B (en) * | 2010-10-19 | 2012-12-12 | 珠海市佳讯实业有限公司 | Device for realizing synchronous transport module level-1 (STM-1) multipath Ethernet over E1 conversion |
| CN104539409A (en) * | 2014-12-24 | 2015-04-22 | 深圳市邦彦信息技术有限公司 | Method and system for adapting multi-path Ethernet to multi-path E1 channel |
| CN104539409B (en) * | 2014-12-24 | 2017-12-01 | 邦彦技术股份有限公司 | Method and system for adapting multi-path Ethernet to multi-path E1 channel |
| CN106210654A (en) * | 2016-08-16 | 2016-12-07 | 安徽省瑞鼎电子技术有限公司 | Network communicating system based on SDH technology |
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