CN212135416U - Interface module supporting 8-path PCM - Google Patents
Interface module supporting 8-path PCM Download PDFInfo
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- CN212135416U CN212135416U CN201922479898.6U CN201922479898U CN212135416U CN 212135416 U CN212135416 U CN 212135416U CN 201922479898 U CN201922479898 U CN 201922479898U CN 212135416 U CN212135416 U CN 212135416U
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Abstract
The utility model provides a support interface module of 8 way PCMs, including the PCM integrated circuit board, it has eight ways E1 conversion function to insert the BSC interface and insert BTS abis interface with DB25 of the same kind to open on the PCM integrated circuit board, and wherein eight ways E1 conversion function inserts the BSC interface and is connected with L9-KE coaxial connector respectively, and DB25 inserts BTS abis interface connection has double DB25 serial ports socket. The utility model provides a GSM-R network BSS system reliability requires, promotes the emergent technical level of maintaining of railway operation management.
Description
Technical Field
The utility model relates to a GSM-R wireless mobile communication equipment field specifically is an interface module who supports 8 way PCM.
Background
The 8-path PCM interface module is an 8-path impedance converter converting 120 omega to 75 omega, is mainly used for an interface abis conversion function between a GSM-R mobile communication base station (BTS) and a Base Station Controller (BSC), is realized by 2Mb/s in physical connection, mainly relates to a lapd protocol, a physical layer and a layer 3 protocol of a link layer, and supports control, wireless frequency resource allocation and the like of BTS wireless equipment.
The GSM-R system bears the data transmission services of dispatching voice communication, train control data transmission, dispatching command data transmission, train number checking information transmission and various monitoring systems, and directly serves railway transportation command, train control and the like. Currently, in most high-speed railway planning and GSM-R networks implemented and deployed, a single set of BSC equipment is mostly adopted; when a single BSC is unexpectedly down, it is difficult for base stations along the line to resume communications in a short time. Therefore, the dual BSCe3 primary/standby redundancy scheme is necessary, and at this time, 8 PCM interface modules need to be accessed to realize that dual BSCs control the same BTS.
The traditional PCM interface module only has 4 paths, only supports to access one path of BSC, when the BSC is accidently shut down, all BTS lose the shut down signal, the novel 8-path PCM interface module can support to access two paths of BSC, when one path of BSC is accidently shut down, the other path of BSC takes over all BTS currently, and basically realizes seamless switching.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve prior art's problem, provide an interface module who supports 8 way PCM, provide GSM-R network BSS system reliability requirement, promote the emergent technical level of maintaining of railway operation management.
The utility model discloses a PCM integrated circuit board, it has eight ways E1 conversion function to insert the BSC interface and insert BTS abis interface with DB25 all the way to open on the PCM integrated circuit board, and wherein eight ways E1 conversion function inserts the BSC interface and is connected with L9-KE coaxial connector respectively, and DB25 inserts BTS abis interface connection has double DB25 serial ports socket.
The PCM board card is further improved and provided with a surge-proof and isolation voltage transformation module.
The utility model has the advantages that:
(1) providing reliability requirements of a BSS system of a GSM-R network;
when the BSC module adopts a redundancy backup design scheme, one BSC module can be used as a main module and the other BSC module is used as a hot backup module by using the novel 8-path PCM module, and once the main BSC module fails, the BSC module is automatically switched to the other BSC module to work, so that the reliability requirement is greatly improved.
(2) Promote the technical level of emergency maintenance of railway operation management
The network operation condition is timely, accurately and fully mastered, the network change development is timely responded, and the network equipment management, the operation quality and the efficiency are improved.
Drawings
Fig. 1 is a schematic diagram of a PCM board.
Fig. 2 is a schematic diagram of the external structure of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model discloses the structure is shown in fig. 1 and fig. 2, including the PCM integrated circuit board, it has eight ways E1 conversion function to insert BSC interface 1 and all the way DB25 access BTS abis interface 2 to open on the PCM integrated circuit board, and wherein eight ways E1 conversion function access BSC interface is connected with L9-KE coaxial connector respectively, and DB25 access BTS abis interface connection has double DB25 serial ports socket.
The PCM board card is further improved and provided with a surge-proof and isolation voltage transformation module.
The 8-path PCM interface module mainly supports the access of 4-path receiving and transmitting integrated E1, realizes the impedance conversion function, is mainly applied to a GSM-R base station subsystem, realizes the Abis interface bridge function between the BSC and the BTS, and is an essential module in the GSM-R base station subsystem.
The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.
Claims (2)
1. An interface module supporting 8-way PCM, characterized in that: the system comprises a PCM board card, wherein eight paths of E1 conversion function access BSC interfaces and one path of DB25 access BTS abis interfaces are arranged on the PCM board card, the eight paths of E1 conversion function access BSC interfaces are respectively connected with an L9-KE coaxial connector, and the DB25 access BTS abis interface is connected with a double-row DB25 serial port socket.
2. The interface module supporting 8-way PCM of claim 1, wherein: the PCM board card is provided with a surge-proof and isolation voltage transformation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479898.6U CN212135416U (en) | 2019-12-31 | 2019-12-31 | Interface module supporting 8-path PCM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479898.6U CN212135416U (en) | 2019-12-31 | 2019-12-31 | Interface module supporting 8-path PCM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212135416U true CN212135416U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922479898.6U Active CN212135416U (en) | 2019-12-31 | 2019-12-31 | Interface module supporting 8-path PCM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212135416U (en) |
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2019
- 2019-12-31 CN CN201922479898.6U patent/CN212135416U/en active Active
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