CN101527609A - Method for transferring alarm information, device for sending alarm information and device for receiving same - Google Patents
Method for transferring alarm information, device for sending alarm information and device for receiving same Download PDFInfo
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- CN101527609A CN101527609A CN200810101278A CN200810101278A CN101527609A CN 101527609 A CN101527609 A CN 101527609A CN 200810101278 A CN200810101278 A CN 200810101278A CN 200810101278 A CN200810101278 A CN 200810101278A CN 101527609 A CN101527609 A CN 101527609A
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Abstract
The invention provides a method for transferring alarm information, a device for sending the alarm information and a device for receiving the same, wherein the sending device for sending the alarm information is applied to sending alarm frames which have same frame structures with STM-N data frames; and the device for sending the alarm information comprises a procession counting module for performing procession counting according to a reference frame head in a mode of the frame structures of the alarm frames, and a first transmission module for sending signal degradation and signal failure information of a branch unit of STM-N data to an alarm information receiving module in a payload area of the alarm frames according to the counting result of the procession counting module of the alarm frames. The method and the devices perform the transferring after singly constructing the alarm frames of which the structures are same as that of SDH frames, SD and SF information is not needed to be stuffed into a V4/H3a byte in certain coding mode, a receiver also does not position the position of the V4/H3a byte to extract the alarm information, thus the complexity of logic processing is greatly reduced; and simultaneously, the method and the devices are quite easy to achieve.
Description
Technical field
The present invention relates to a kind of communication technique field, a kind of warning information transmission method, device for sending alarm information and receiving system in particularly a kind of synchronous digital hierarchy/Synchronous Optical Network system.
Background technology
Along with the development of integrated circuit technique, special integrated chip (ASIC) has obtained application more and more widely in the SDH/SONET system, comprising branch road payload process chip, time-division intersection and Tributary Protection Switch process chip.
Generally speaking; branch road payload process chip and time-division intersect and the supporting use of Tributary Protection Switch chip; not only to transmit STM-N (Synchronous Transport Module Level N between them; N level synchronous transfer mode) service signal; also to transmit Signal Degrade (Signal Degrade; be called for short SD) and Signal Fail (Signal Failure is called for short SF) warning information, as the criterion of Tributary Protection Switch.
SD between branch road payload process chip and time-division intersection and the Tributary Protection Switch process chip, the transmission method of SF warning information; PM5369 and PM5370 nest plate with PMC-Sierraz company are example; SD, SF warning information as the APS criterion are with certain coded system; insert middle transmission of V4 byte (TU-12 road) of corresponding tributary unit (TU) branch road; for the TU-3 branch type, then in the TU-3 frame structure, transmit in the 1st byte of the 4th row (H3a byte).
Above-mentioned method has the simple advantage of interface; but because at transmit leg; branch road payload process chip will use certain coded system to be tucked in the V4/H3a byte SD, SF information; can increase the complexity of logical process; equally recipient's (time-division intersects and the Tributary Protection Switch process chip); need location V4/H3a byte location to extract SD, SF warning information, also increased the complexity of logical process.
Summary of the invention
The purpose of this invention is to provide a kind of warning information transmission method, device for sending alarm information and receiving system, realize simple and reliable warning information transmission.
To achieve these goals, the embodiment of the invention provides a kind of device for sending alarm information, is used for sending the alarm frame, wherein:
Described alarm frame is identical with the frame structure of STM-N Frame;
Described device for sending alarm information comprises:
The line count module is according to the frame structure mode procession counting of reference frame head with described alarm frame;
First transport module is used for the count results according to alarm frame line count module, sends the Signal Degrade of tributary unit of STM-N data and Signal Fail information in the payload section of described alarm frame to the warning information receiver module.
Above-mentioned device for sending alarm information also comprises:
The B1 generation module is used for that all bits of a last alarm frame are made BIP-8 and calculates, and obtains the B1 byte;
Second transport module is used for the count results according to alarm frame line count module, and the 1st row of going at the 2nd of described alarm frame send described B1 byte to described warning information receiver module;
The 3rd transport module is used for sending the Idle byte to the warning information receiver module in other positions of described alarm frame; With
Frame head index signal generation module is used for the count results according to alarm frame line count module is sent to described warning information receiver module with the frame head index signal;
One of them position in the section overhead district of the 1st row of described alarm frame, described frame head index signal is a high level, other constantly described frame head index signals keep low level.
Above-mentioned device for sending alarm information, wherein:
Described first transport module is according to the count results of alarm frame line count module, transmit at most the described Signal Degrade and the Signal Fail information of a STM-N port correspondence in payload section of each row of described alarm frame, and the described Signal Degrade of described STM-N port correspondence and Signal Fail information only transmit in the payload section of preceding 8 row of described alarm frame;
Described first transport module is according to the count results of alarm frame line count module, payload section at first row of described alarm frame begins to transmit the described Signal Degrade and the Signal Fail information of described STM-N port correspondence, transmits until the described Signal Degrade of all STM-N port correspondences and Signal Fail information to finish.
Above-mentioned device for sending alarm information wherein, also comprises:
Frequency division module is used for work clock is carried out frequency division, produces source synchronous clock, sends to described warning information receiver module.
In order better to realize above-mentioned purpose, the embodiment of the invention also provides a kind of warning information receiving system, be used for the alarm frame that the receiving alarm information sending module sends, described alarm frame is identical with the frame structure of STM-N Frame, and described warning information receiving system comprises:
Locating module is used for the byte of described alarm frame is counted, and forms the byte locating information;
The write address generation module is used for producing the Signal Degrade of described alarm frame and the write address that Signal Fail information is saved in described preservation module according to the byte locating information;
Preserve module, be used for obtaining the Signal Degrade and the Signal Fail information of the tributary unit of STM-N data, and preserve described Signal Degrade and Signal Fail information in the described alarm frame according to described write address from the payload section of described alarm frame.
Above-mentioned warning information receiving system, wherein, described locating module is that benchmark is counted the byte of described alarm frame with the frame head index signal.
Above-mentioned warning information receiving system wherein, also comprises:
The verification module, be used for locating the B1 byte sent of the 1st biographies of the 2nd row of described alarm frame according to the byte locating information, and last one all bits of alarming frame are carried out BIP-8 calculate, BIP-8 check value that obtains and the current B1 byte that receives are relatively finished the B1 verification.
In order better to realize above-mentioned purpose, the embodiment of the invention also provides a kind of warning information transmission method, wherein, comprising:
Transmit leg is according to the frame structure mode procession counting of reference frame head with the alarm frame, and described alarm frame is identical with the frame structure of STM-N Frame;
Transmit leg is according to the result of alarm frame line count, transmits the Signal Degrade of tributary unit of STM-N data and Signal Fail information in the payload section of described alarm frame to the recipient.
Above-mentioned method wherein, also comprises:
The alarm frame that recipient's receiving branch payload process chip transmits:
The recipient counts the byte of described alarm frame, forms the byte locating information;
The recipient obtains the Signal Degrade and the Signal Fail information of the tributary unit of STM-N data according to the byte locating information from the payload section of described alarm frame, and preserves described Signal Degrade and Signal Fail information.
Above-mentioned method wherein, also comprises:
Transmit leg calculates the B1 byte to all bits of a last alarm frame as BIP-8, and according to alarm frame line count result, send described B1 byte to the recipient at the 2nd of described alarm frame the 1st capable biographies;
Transmit leg transmits the Idle byte to the recipient in other positions of described alarm frame;
The recipient locatees the B1 byte sent of the 1st biographies of the 2nd row of described alarm frame according to the byte locating information, and all bits of a last alarm frame is carried out BIP-8 calculate, and BIP-8 check value that obtains and the current B1 byte that receives are relatively finished the B1 verification.
Above-mentioned method wherein, also comprises:
Transmit leg sends to the recipient according to alarm frame line count result with the frame head index signal;
The recipient is that benchmark is counted the byte of described alarm frame with described frame head index signal.
Above-mentioned method, wherein:
The payload section of each row of described alarm frame transmits at most the described Signal Degrade and the Signal Fail information of a STM-N port correspondence, and the described Signal Degrade of described STM-N port correspondence and Signal Fail information only transmit in the payload section of preceding 8 row of described alarm frame;
Payload section at first row of described alarm frame begins to transmit the described Signal Degrade and the Signal Fail information of described STM-N port correspondence, transmits until the described Signal Degrade of all STM-N port correspondences and Signal Fail information to finish.
The present invention has following beneficial effect:
By transmitting behind the independent structural texture alarm frame identical with the SDH frame structure, obtain warning information by recipient's parsing, need not use certain coded system to be tucked in the V4/H3a byte SD, SF information, the recipient does not need to locate the V4/H3a byte location yet and extracts SD, SF warning information, has reduced the complexity of logical process greatly; Simultaneously, because the alarm frame structure is identical with the current SDH frame structure, realize very simple.
Description of drawings
Fig. 1 is the structural representation of the alarm frame of the embodiment of the invention;
Fig. 2 is the schematic flow sheet of the method for the embodiment of the invention;
Fig. 3 is in the embodiment of the invention, the structural representation of the STM-N/4 of correspondence alarm frame when the way of device for sending alarm information treatment S TM-N data is 6 tunnel;
Fig. 4 is in the embodiment of the invention, the structural representation of the STM-N/4 of correspondence alarm frame when the way of device for sending alarm information treatment S TM-N data is 4 tunnel;
Fig. 5 is the structural representation of the warning information transmission system of the embodiment of the invention.
Embodiment
In warning information transmission method of the present invention, device for sending alarm information and the receiving system, transmit leg is by the structure alarm frame identical with the SDH frame structure, and with SF and SD warning information compressed encoding in this alarm frame, and using the source sync cap to be delivered to the recipient from transmit leg, the recipient recovers SD, the SF warning information of each branch road from the alarm frame that receives.
In the time of the SDH of 125us frame, the SD of TU branch road, SF state only may change once (for the TU1 multi-frame, 1 multi-frame is just may change once in the 500us), and in the delegation of SDH frame structure, (TU11 3 times appears once in each bar TU branch road at least, TU12 4 times, TU-385 time).
Based on above-mentioned principle, SD, the SF information of each bar branch road that device for sending alarm information produces, in a frame time (for TU1, then being a reframing time), minimum needs once get final product with the transmission of Tributary Protection Switch process chip to the time-division intersection.
In specific embodiments of the invention, with device for sending alarm information handle 8 road STM-N (N=4,16,64 ...) data instance describes.
Before method was described, the structure to the alarm frame described earlier.
The structure of this alarm frame is as shown in Figure 1, and is identical with the frame structure of STM-N/4, totally 9 goes, and every capable 270N/4 row from left to right, transmit from top to bottom, wherein:
The preceding 9N/4 of every row classifies the section overhead district as, and other are payload section;
The section overhead district of the 1st row and the 3rd row are used to pass the Idle byte to the section overhead district of eighth row;
The part that the section overhead district of the 2nd row removes the 1st row is used to pass the Idle byte, and the 1st of the 2nd row is listed as and is used to pass BIP-8 check value (B1 byte), i.e. even parity check check value, and this B1 byte is the BIP-8 check value that a last STM-N/4 alarms all bytes in the frame.
The 9th row is used to pass the Idle byte;
The 1st row to the payload section of eighth row be used for transmitting respectively 8 road STM-N (N=4,16,64 ...) SD, the SF information of the TU branch road of data, SF and the SD signal of corresponding 4 TU of each byte, time formerly be placed on a high position, time after be placed on low level, and corresponding VC-4POH, the byte of padding position, SD, SF bit are the filling value.
Above-mentioned Idle byte, content are 8 ' h00, and recipient's (time-division intersects and the Tributary Protection Switch process chip) ignores, and the content of above-mentioned filling value, the recipient also ignores.
In above-mentioned description, be that to transmit byte (8bits) with each beat alarm frame be that example describes, so adopt STM-N/4 alarm frame, but when the data width of each beat alarm frame transmission was 32bit, this alarm frame also can be the frame structure of STM-N/16;
And the like, when the data of transmission were STM-64, this alarm frame also can be to use various forms of frame structures such as STM-1, STM-4, STM-16.
Because various forms of alarm frames are included by above-mentioned STM-N/4 alarm frame, are not described in more detail at this.
The method that the warning information of the embodiment of the invention transmits comprises as shown in Figure 2:
Each row of STM-N/4 alarm frame is placed the corresponding SD of a STM-N port, SF warning information at most;
Begin to place the corresponding SD of STM-N port, SF warning information from the payload section of STM-N/4 alarm frame first row, place and finish until the corresponding SD of STM-N port, SF warning information;
At this, when this transmit leg and recipient were respectively branch road payload process chip and time-division intersection and Tributary Protection Switch process chip, this STM-N/4 alarm frame transmitted by the source sync cap between branch road payload process chip and time-division intersection and the Tributary Protection Switch process chip;
Simultaneously, owing to do not have the definition frame header in the above-mentioned STM-N/4 alarm frame, therefore, in step 25, when transmit leg sends to the recipient with complete STM-N/4 alarm frame, send frame head index signal FP by the source sync cap to the recipient simultaneously, this frame head index signal is set to high level in one of them position in the section overhead district of the 1st row of STM-N/4 alarm frame, other keep low level state constantly, but in order better to be consistent with existing STM-N frame, in specific embodiments of the invention, the position that is listed as at the 1st 6N/4+1 that goes of STM-N/4 alarm frame is a high level, and other keep low level state constantly.
When sending alarm frame and frame head index signal FP, source sync cap bus and FP upgrade at the trailing edge of source synchronous clock.
STM-N/4 shown in Figure 1 alarm frame be device for sending alarm information handle 8 road STM-N (N=4,16,64 ...) the alarm frame of data, device for sending alarm information treatment S TM-N (N=4,16,64 ...) way of data is less than 8 o'clock, the row of remaining STM-N/4 alarm frame is transmitted the Idle byte gets final product.
As device for sending alarm information treatment S TM-N (N=4,16,64 ...) when the way of data is 6 the tunnel, its corresponding STM-N/4 alarm frame as shown in Figure 3, STM-N/4 alarm frame among Fig. 3, because the corresponding SD of 6 road STM-N ports, SF warning information are only arranged, therefore, the 7th row of this STM-N/4 alarm frame all transmits the Idle byte to the 9th row.
Certainly; under the structure of above-mentioned alarm frame; when this transmit leg and recipient are respectively branch road payload process chip and time-division intersection and Tributary Protection Switch process chip; each row of STM-N/4 alarm frame is placed the corresponding SD of a STM-N port, SF warning information, and the highway width of the source sync cap between branch road payload process chip and time-division intersection and the Tributary Protection Switch process chip is 8.
Device for sending alarm information treatment S TM-N (N=4,16,64 ...) when the way of data is less than or equal to 4 the tunnel, in the embodiment of the invention, in order to reduce chip pin, can it be 4 with the width reduction of SD, SF warning information interface data bus, as device for sending alarm information treatment S TM-N (N=4,16,64 ...) when the way of data equals 4 the tunnel, corresponding alarm frame structure as shown in Figure 4, professional corresponding branch road SD, the SF warning information of every road STM-N is arranged on the payload section transmission of two row of alarm frame, wherein:
The payload section of first row of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of first and second AUG-4 of first via STM-N data;
The payload section of second row of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of third and fourth AUG-4 of first via STM-N data;
The payload section of the third line of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of first and second AUG-4 of the second road STM-N data;
The payload section of the fourth line of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of third and fourth AUG-4 of the second road STM-N data;
The payload section of the fifth line of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of first and second AUG-4 of Third Road STM-N data;
The payload section of the 6th row of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of third and fourth AUG-4 of Third Road STM-N data;
The payload section of the 7th row of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of first and second AUG-4 of the four road STM-N data;
The payload section of the 8th row of STM-N/4 alarm frame is provided with branch road SD, the SF warning information of third and fourth AUG-4 of the four road STM-N data.
Fig. 5 is the structural representation of the warning information transmission system of the embodiment of the invention, in Fig. 5, is that 8 tunnel situation describes with the way of device for sending alarm information treatment S TM-N data.
As shown in Figure 5, this system comprises device for sending alarm information and warning information receiving system, wherein:
This device for sending alarm information specifically comprises:
The B1 generation module is used for that all bits of a last alarm frame are made BIP-8 and calculates, and obtains the B1 byte;
Alarm frame line count module is gone counting and column count according to reference frame head (at the J0 byte location with the synchronous STM-N business data flow of original SD, SF warning information is high level, and other are low level constantly) in the frame structure mode of STM-N/4 frame;
Transport module, be used for count results according to alarm frame line count module, the 1st row of STM-N/4 frame to the payload sections supplementary biography of eighth row send 8 road STM-N (N=4,16,64 ...) SD, the SF information of the TU branch road of data, the 2nd the 1st biographies of going at the STM-N/4 frame send BIP-8 check value (B1 byte), and the Idle byte is transmitted in other positions;
Frame head index signal generation module is used for the count results according to alarm frame line count module, and the position that is listed as at the 1st 6N/4+1 that goes of STM-N/4 alarm frame is changed to high level with frame head index signal FP, and other keep low level constantly;
Frequency division module is used for work clock is carried out 4 frequency divisions, produces source synchronous clock CLK;
Described warning information receiving system comprises:
Locating module is a benchmark with frame head index signal FP, and the byte of the alarm frame that receives is counted, and forms the byte locating information;
The verification module is used for according to byte locating information location B1 byte location, and all bits of a last alarm frame are carried out BIP-8 calculating, and BIP-8 check value that obtains and the current B1 byte that receives are relatively finished the B1 verification;
The write address generation module, be used for being saved in the write address of preserving module according to byte locating information generation SD, SF warning information, this write address is obtained by base address and offset address addition, and the base address is the numbering of STM-N port, and offset address is the numbering of the inner TU branch road of STM-N;
Preserve module, be used for the SD that produces according to the write address generation module, the write address of SF warning information is preserved SD, the SF warning information of alarm frame.
This preservation module is RAM, and its width is identical with the width of source sync cap bus, and the degree of depth is the twice that STM-N comprises maximum possibility TU branch road quantity;
Wherein, the RAM type is 1W/1R (one reads one writes RAM), at the mouth of reading of RAM, reads SD, SF warning information sequentially, as the criterion of Tributary Protection Switch.
In specific embodiments of the invention; above-mentioned device for sending alarm information and warning information receiving system can be provided with separately; also can be arranged at branch road payload process chip and time-division intersection and Tributary Protection Switch process chip respectively; certainly can also be arranged in other chips of transmitting terminal and receiving terminal respectively; but its structure and processing procedure and top description are identical, are not described respectively at this.
The above only is a preferred implementation 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 (12)
1. a device for sending alarm information is used for sending the alarm frame, it is characterized in that:
Described alarm frame is identical with the frame structure of STM-N Frame;
Described device for sending alarm information comprises:
The line count module is according to the frame structure mode procession counting of reference frame head with described alarm frame;
First transport module is used for the count results according to alarm frame line count module, sends the Signal Degrade of tributary unit of STM-N data and Signal Fail information in the payload section of described alarm frame to the warning information receiver module.
2. device for sending alarm information according to claim 1 is characterized in that, also comprises:
The B1 generation module is used for that all bits of a last alarm frame are made BIP-8 and calculates, and obtains the B1 byte;
Second transport module is used for the count results according to alarm frame line count module, and the 1st row of going at the 2nd of described alarm frame send described B1 byte to described warning information receiver module;
The 3rd transport module is used for sending the Idle byte to the warning information receiver module in other positions of described alarm frame; With
Frame head index signal generation module is used for the count results according to alarm frame line count module is sent to described warning information receiver module with the frame head index signal;
One of them position in the section overhead district of the 1st row of described alarm frame, described frame head index signal is a high level, other constantly described frame head index signals keep low level.
3. device for sending alarm information according to claim 2 is characterized in that:
Described first transport module is according to the count results of alarm frame line count module, transmit at most the described Signal Degrade and the Signal Fail information of a STM-N port correspondence in payload section of each row of described alarm frame, and the described Signal Degrade of described STM-N port correspondence and Signal Fail information only transmit in the payload section of preceding 8 row of described alarm frame;
Described first transport module is according to the count results of alarm frame line count module, payload section at first row of described alarm frame begins to transmit the described Signal Degrade and the Signal Fail information of described STM-N port correspondence, transmits until the described Signal Degrade of all STM-N port correspondences and Signal Fail information to finish.
4. according to any described device for sending alarm information in the claim 1,2 or 3, it is characterized in that, also comprise:
Frequency division module is used for work clock is carried out frequency division, produces source synchronous clock, sends to described warning information receiver module.
5. a warning information receiving system is characterized in that, is used for the alarm frame that the receiving alarm information sending module sends, and described alarm frame is identical with the frame structure of STM-N Frame, and described warning information receiving system comprises:
Locating module is used for the byte of described alarm frame is counted, and forms the byte locating information;
The write address generation module is used for producing the Signal Degrade of described alarm frame and the write address that Signal Fail information is saved in described preservation module according to the byte locating information;
Preserve module, be used for obtaining the Signal Degrade and the Signal Fail information of the tributary unit of STM-N data, and preserve described Signal Degrade and Signal Fail information in the described alarm frame according to described write address from the payload section of described alarm frame.
6. warning information receiving system according to claim 5 is characterized in that, described locating module is that benchmark is counted the byte of described alarm frame with the frame head index signal.
7. warning information receiving system according to claim 6 is characterized in that, also comprises:
The verification module, be used for locating the B1 byte sent of the 1st biographies of the 2nd row of described alarm frame according to the byte locating information, and last one all bits of alarming frame are carried out BIP-8 calculate, BIP-8 check value that obtains and the current B1 byte that receives are relatively finished the B1 verification.
8. a warning information transmission method is characterized in that, comprising:
Transmit leg is according to the frame structure mode procession counting of reference frame head with the alarm frame, and described alarm frame is identical with the frame structure of STM-N Frame;
Transmit leg is according to the result of alarm frame line count, transmits the Signal Degrade of tributary unit of STM-N data and Signal Fail information in the payload section of described alarm frame to the recipient.
9. method according to claim 8 is characterized in that, also comprises:
The alarm frame that recipient's receiving branch payload process chip transmits:
The recipient counts the byte of described alarm frame, forms the byte locating information;
The recipient obtains the Signal Degrade and the Signal Fail information of the tributary unit of STM-N data according to the byte locating information from the payload section of described alarm frame, and preserves described Signal Degrade and Signal Fail information.
10. method according to claim 9 is characterized in that, also comprises:
Transmit leg calculates the B1 byte to all bits of a last alarm frame as BIP-8, and according to alarm frame line count result, send described B1 byte to the recipient at the 2nd of described alarm frame the 1st capable biographies;
Transmit leg transmits the Idle byte to the recipient in other positions of described alarm frame;
The recipient locatees the B1 byte sent of the 1st biographies of the 2nd row of described alarm frame according to the byte locating information, and all bits of a last alarm frame is carried out BIP-8 calculate, and BIP-8 check value that obtains and the current B1 byte that receives are relatively finished the B1 verification.
11. method according to claim 9 is characterized in that, also comprises:
Transmit leg sends to the recipient according to alarm frame line count result with the frame head index signal;
The recipient is that benchmark is counted the byte of described alarm frame with described frame head index signal.
12. according to Claim 8, any described method in 9,10 or 11, it is characterized in that:
The payload section of each row of described alarm frame transmits at most the described Signal Degrade and the Signal Fail information of a STM-N port correspondence, and the described Signal Degrade of described STM-N port correspondence and Signal Fail information only transmit in the payload section of preceding 8 row of described alarm frame;
Payload section at first row of described alarm frame begins to transmit the described Signal Degrade and the Signal Fail information of described STM-N port correspondence, transmits until the described Signal Degrade of all STM-N port correspondences and Signal Fail information to finish.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810101278A CN101527609A (en) | 2008-03-03 | 2008-03-03 | Method for transferring alarm information, device for sending alarm information and device for receiving same |
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| CN200810101278A CN101527609A (en) | 2008-03-03 | 2008-03-03 | Method for transferring alarm information, device for sending alarm information and device for receiving same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860408A (en) * | 2010-06-11 | 2010-10-13 | 和记奥普泰通信技术有限公司 | Synchronous digital hierarchy signal transmission method |
| CN102647301A (en) * | 2012-04-25 | 2012-08-22 | 北京润光泰力科技发展有限公司 | Alarm information transmitting method, related equipment and system |
| CN106789162A (en) * | 2016-11-25 | 2017-05-31 | 瑞斯康达科技发展股份有限公司 | A kind of distributed electrical cross system and its alarm transmission method |
-
2008
- 2008-03-03 CN CN200810101278A patent/CN101527609A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860408A (en) * | 2010-06-11 | 2010-10-13 | 和记奥普泰通信技术有限公司 | Synchronous digital hierarchy signal transmission method |
| CN101860408B (en) * | 2010-06-11 | 2013-10-16 | 和记奥普泰通信技术有限公司 | Synchronous digital hierarchy signal transmission method |
| CN102647301A (en) * | 2012-04-25 | 2012-08-22 | 北京润光泰力科技发展有限公司 | Alarm information transmitting method, related equipment and system |
| CN102647301B (en) * | 2012-04-25 | 2015-04-15 | 北京润光泰力科技发展有限公司 | Alarm information transmitting method, related equipment and system |
| CN106789162A (en) * | 2016-11-25 | 2017-05-31 | 瑞斯康达科技发展股份有限公司 | A kind of distributed electrical cross system and its alarm transmission method |
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Application publication date: 20090909 |