JP2000295642A - Optical network unit board and method for managing line card of the optical network unit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a SLT where a time required for setting acquisition is less increased even when number of cards is increased by providing a memory area to store information of a plurality of the line cards so as to process information of a plurality of the line cards in a lot. SOLUTION: An optical network unit(ONU) 6 is provided with a memory 4 that stores control information and state information of a plurality of service interface cards(LCd) 7. This memory 4 is provided with areas capable of storing in a lot information of all line cards within a limit of maximum number of cards contained by the optical network unit(ONU) 6 and of maximum number of cards contained by an OSU, and the information is transmitted between an operation system(Ops) 1 and the OSU in a lot so as to decrease the time required to set and acquire the card information. Then the setting and reading of the line card information in the same ONU are conducted at a high-speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical network unit between an operation system and an optical network unit (OSU), and between an optical network unit (OSU) and an optical network unit (ONU).
And a line card management method for an optical network unit that sets and obtains line card information at high speed.

[0002]

2. Description of the Related Art Conventionally, an optical subscriber line termination panel (hereinafter abbreviated as OSU) and a line card management method for an optical subscriber line termination station are a plurality of optical subscriber lines as subscriber units. In order to hold information on a plurality of line cards housed in a terminating device (hereinafter abbreviated as ONU), a memory is internally provided to hold information. In this memory, control information from an operation system (hereinafter, abbreviated as Ops) to each line card and unique information such as status information corresponding to the control information are stored for each line card.

First, a description will be given of a method of managing line cards of Ops, OSU, and optical network unit, and a configuration between line cards.

In FIG. 14, an operation system 1 for controlling the entire hardware including the OSU and the line card, an operation system interface 2 for transferring information to and from the operation system 1, and converting the information into a form suitable for the hardware. A hardware control unit 3 for performing intermediate processing, a memory 21 for storing line card information, an operation system interface 2, a hardware control unit 3, and an optical line terminal (SLT) Abbreviated) 5, optical network unit (hereinafter abbreviated as ONU) 6, line card 7
It is.

[0005] As shown in FIG. 15, the memory 21 includes a down line card information area 22 for storing control information and an up line card information area 23 for storing state information.

In the configuration shown in FIG. 14, the memory 21 constitutes a line card management method for one OSU and one ONU. However, a plurality of memories 21 corresponding to a plurality of OSUs may be connected to one hardware control unit 3. In some cases, the operation system interface 2 and the hardware control unit 3 are collectively expressed as one operation block. Also, here, SL
T5 is a general term for the above three functional units,
T5 is configured by combining various other functional units.

[0007] The information transmission operation between Ops1 and line card 7 will be described with reference to FIGS. In these circuits, Ops1 transmits one line card control information per ONU 6 to the operation system interface 2. Next, the data is transmitted to the hardware control unit 3, subjected to intermediate processing in a form suitable for hardware, and then stored in the memory 21. The OSU transmits each information to the line card 7 through the ONU 6.

[0008] In addition, status information is transmitted from the line card 7 to Ops 1 as an answer. Line card 7
Is transmitted from the ONU 6 to the OSU and stored in the memory 21. Then, the data is transferred to the hardware control unit 3 and subjected to intermediate processing in a form conforming to Ops1, then transferred to the operation system interface 2, and transferred to Ops1.

The communication between the OSU and the ONU is performed only once for each ONU.
One line card information can be transferred per U6. Therefore, Ops 1 transfers one piece of line card information to memory 21 for each ONU 6. The feature of the conventional example is that one line card information is stored per ONU 6, and information is transferred for each line card between Ops and OSU.

[0010]

However, according to the above-mentioned prior art, Ops requires a lot of time to continuously set or acquire a plurality of line card information stored in one ONU. There are drawbacks.

[0011] Specifically, the above conventional method uses the same ON
The time required for information setting and acquisition of a plurality of line cards in U is obtained by multiplying the time required for one line card by the number of line cards. As the number of line cards increases, the time required for setting and acquisition becomes proportional to the time required There is a disadvantage that it increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an optical subscriber having a memory area for storing information of a plurality of line cards and having a line card management method for processing a plurality of line card information collectively. It is an object of the present invention to provide a line card management method for a line termination board and an optical network unit.

Further, information of a plurality of line cards is stored in the ONU
It is an object of the present invention to provide an OSU having a line card management method in which a storage unit is divided into a table of units and a storage area in units of line cards, and the storage area is managed.

Further, the present invention has a line card management method for performing a unique order or preferential communication with a line card for updating information in order to efficiently update line card information between the OSU and the ONU. It aims to provide an OSU.

Also, a specific line card or ONU
It is an object of the present invention to provide an OSU having a line card management method for notifying Ops of information update of all line cards for each line card.

[0016]

The present invention adopts the following constitution in order to solve the above problems.

An optical network unit (OSU) collectively stores control information and status information of a plurality of line cards in one optical network unit (ONU).

As a result, the operation system (O
ps) and the OSU, the line card information in the same ONU can be transferred collectively, and the line card information setting and reading in the same ONU can be performed at high speed.

The OSU is provided with a flag indicating accommodation of a line card for updating information for each ONU.

By initializing the order of transmission of control information to be transmitted to the line cards, Ops can estimate the information update time of a specific line card, so that the transmission of control information of all line cards is completed without waiting. The process can proceed to the next process.

In the OSU, the number of the line card to which the control information is preferentially transmitted is stored.

Thus, the OSU can transmit the control information to the ONU by giving priority to the line card for updating the information, thereby promptly updating the information.

The OSU provides a flag indicating completion of transmission and reception of the first line card information for each ONU.

Thus, Ops can recognize the completion of the update of the line card information even in an environment where a communication error or the like easily occurs between the OSU and the ONU, and can perform the next processing without delay.

The OSU updates all the line card information accommodated for each ONU and provides a flag indicating completion.

As a result, the Ops recognizes the completion of the update of all line card information even in an environment where a communication error or the like easily occurs between the OSU and the ONU, and can perform the next processing for each ONU without delay.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention relating to an optical network unit according to the first aspect of the present invention relates to an optical network unit (ONU).
And a storage means for collectively storing control information and status information of a plurality of line cards.

With this configuration, line card information in the same ONU is transferred at a time between Ops and SLT, so that line card information in the same ONU can be set and read at high speed.

According to the second aspect of the present invention, in the optical network unit according to the first aspect, the number of service interface cards actually accommodated in one optical network unit (OSU) or It is configured to have an information storage area that covers one or both of the number of line cards that can be logically accommodated in one optical network unit.

According to the third aspect of the present invention, the optical network unit according to the first or second aspect manages line cards by managing information for each optical network unit and information for each service interface. Are performed separately.

According to this configuration, the storage memory of the line card information is managed using the table, so that an increase in the required memory amount can be reduced.

According to a fourth aspect of the present invention, in the optical line terminal according to any one of the first to third aspects, information of a plurality of line cards is stored in a table for each ONU and a storage area for each line card. And the storage area is dynamically allocated.

According to a fifth aspect of the present invention, in the optical line terminal according to any one of the first to fourth aspects, a line card for setting or obtaining information for each ONU is accommodated in the OSU. Is provided.

According to a sixth aspect of the present invention, the optical network unit according to any one of the first to fifth aspects has identification information for identifying a line card which sends control information preferentially for each ONU. Configuration.

According to the seventh aspect of the present invention, the optical network unit according to any one of the first to sixth aspects, after receiving an instruction for setting or obtaining line card information from the operation system, for each ONU. Has identification information indicating that the information setting or acquisition of the first line card has been completed.

According to the eighth aspect of the present invention, the optical line terminal according to any one of the first to seventh aspects, after receiving an instruction to set or obtain line card information from the operation system, sets each optical subscriber line. Each line termination device has identification information indicating that information setting or acquisition of all line cards has been completed.

According to a ninth aspect of the present invention, the control information and the status information of a plurality of service interface cards are collectively stored in a single optical network unit. A configuration having a storage process is adopted. With this configuration, the same Os is used between Ops and SLT.
The line card information in the same ONU can be set and read at high speed by transferring the line card information in the NU collectively.

According to the tenth aspect, in the ninth aspect,
In the described OSU line card management method, one OS
The number of line cards actually accommodated in U, or 1
It is configured to have an information storage area that covers one or both of the number of line cards that can be logically accommodated in one ONU.

According to the eleventh aspect, in the ninth aspect,
Or the line card management method of the OSU described in 10
The management of the line card is configured so that the information for each ONU and the information management for each line card are separately performed. With this configuration, the storage memory of the line card information is managed using the table, so that an increase in the required memory amount can be reduced.

According to the twelfth aspect of the present invention, in the ninth aspect,
In the OSU line card management method according to any one of the above items, information on a plurality of line cards is managed by dividing the information into a table for each ONU and a storage area for each line card. Configuration.

According to the thirteenth aspect, in the ninth aspect,
The line card management method for an OSU according to any one of Items 1 to 12, has a configuration in which the OSU has identification information indicating that a line card for setting or obtaining information for each ONU is accommodated.

According to the fourteenth aspect of the present invention, in the ninth aspect,
The line card management method of the OSU described in any one of the above items has a configuration having identification information for identifying a line card that sends control information preferentially for each ONU.

According to the fifteenth aspect, in the ninth aspect,
The line card management method for an OSU according to any one of Items 1 to 14, wherein after receiving an instruction for setting or obtaining line card information from the operating system, the information setting or obtaining of the first line card is completed for each ONU. Is provided.

According to the sixteenth aspect, in the ninth aspect,
The line card management method of the OSU according to any one of the above items 1 to 15, after receiving an instruction to set or obtain line card information from the operation system, set or obtain information of all line cards for each optical network unit. Is configured to have identification information indicating that the process has been completed.

Next, with reference to the drawings, an optical network unit and a line card management method for the optical network unit according to an embodiment of the present invention will be described in detail. FIG. 1 to FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the structure of the optical subscriber line termination board and the line card management method of the optical subscriber line termination board which concern on one Embodiment of this invention.

(Embodiment 1) FIGS. 1 and 2 show the configuration of Embodiment 1 of the present invention. First, a first embodiment of the present invention will be described. In FIG. 1, the optical network unit of the present embodiment includes an operation system (hereinafter referred to as O).
operating system interface 2, which is an interface for transferring information from 1)
It comprises a hardware control unit 3 that converts information from Ops 1 into a form suitable for OSU hardware and transfers the same, and a memory 4 that stores control information and status information of line cards.

The optical network unit (hereinafter abbreviated as SLT) 5, which is a generic name including the operation system interface 2, the hardware control unit 3, and the memory 4, is an optical network unit (hereinafter abbreviated as ONU). ) 6 and a line card (LCd) 7.

FIG. 2 is a conceptual diagram showing an example of the configuration of a RAM area that can store down line or up line card information for one line card. In FIG. 2, the RAM area includes a down line card information area 8 and an up line card information area 9.

Next, the operation of the above embodiment for setting and acquiring a plurality of line card information in the same ONU will be described with reference to FIGS. FIG. 3 shows Ops
1 shows an example of a procedure for transmitting and receiving signals between the SLT 5 and the LCd 7.

Ops 1 collectively sets the line card to SLT 5. That is, the control information of the plurality of line cards accommodated in the ONU is transmitted to the operation system interface 2 collectively. Next, the data is transmitted to the hardware control unit 3, subjected to intermediate processing in a form suitable for hardware, and then stored in the memory 4. OSU is ONU6
Control information to the line card 7 through ONU
-Transmission between OSUs is one per ONU as in the past.
Perform for each line card.

An ACK is sent from the line card 7 to the SLT 5.
(Acknowledgement) is returned. With this response, the status information is transmitted from the line card 7 to the OSU through the ONU 6. These are stored in the memory 4. Thereafter, the data is transferred to the hardware control unit 3 and subjected to intermediate processing in a form conforming to Ops1, then transferred to the operation system interface 2 and transferred to Ops1.

In this process, the line card information is stored in the memory shown in FIG. 2 inside the OSU. Memory is for each ONU
Each area has an area corresponding to the logical maximum line card capacity of the ONU. As an example, assuming that the maximum number of accommodated ONUs per OSU is “32” and the maximum number of logical line cards accommodated per ONU is “128”, the memory of this embodiment is 1
Each OSU has 32 × 128 = 4096 line card information areas.

As described above, according to the present embodiment, information on a plurality of line cards (LCd) accommodated in the same ONU is collectively transmitted from Ops and stored in a memory, and state information of the plurality of line cards is also stored. Is that the data is also sent to Ops collectively.

Since the communication between the SLT and the line card is performed for each line card, the total time required for the communication is not different from the conventional example. However, in the present embodiment, the communication between Ops and the SLT is fast, so that information can be read at high speed from a plurality of line cards accommodated in the same ONU.

The reason why the communication between Ops and SLT is fast will be described below.

Information transfer between Ops 1 and SLT 5 is as follows:
One communication protocol, TCP / IP (Transmission
Control Protocol / Internet Protocol). When transferring a plurality of line card information, the connection by TCP / IP is repeated each time the transfer is performed for each line card.
Only one P / IP connection is required. The time required for the TCP / IP connection greatly depends on the distance between the connection source and the connection destination, but is large compared to the communication time inside the SLT and between the OSU and the ONU. The transfer of all information can be completed in time.

Since Ops also communicates with other SLTs and other devices, the time during which communication with the operation system interface 2 is possible is limited. Therefore, the merit of this embodiment in which communication is completed by one TCP / IP connection is further enhanced.

The capacity of the memory of the first embodiment is larger than the capacity of the memory of the second embodiment described below. However, since the area for storing each line card information is predetermined, for example, "the area for storing the information of the first line card stored in a certain ONU is here", There is a merit that it is easy.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described. FIG. 4 shows the configuration of the present embodiment.
As shown in FIG. 4, in the second embodiment, the memory 10 is different from that in the first embodiment. FIG. 5 shows the configuration of the memory 10.

FIG. 5 shows a configuration example of the table 11 and the line card information area 12. In this embodiment, the memory is composed of these two functional blocks.

The table 11 stores the start position pointer of the line card information area and the number of accommodated line cards for each ONU. As an example, ONU # 1 in FIG. 5 indicates that eight line card information areas are secured from start pointer values 0 to 7. The actual downlink and uplink line card information is stored in the information area 12. Here, the information area of the pointers 1, 3, 5, and 6 in the drawing is hunting because "ONU # 1 has eight line card insertion slots and the line card at the position of the pointers 1, 3, 5, and 6 is ONU # 1. Has been registered. " That is, FIG.
Contains the identification information of the currently registered line card.

In the present embodiment, the total number of logical line cards that can be accommodated in one OSU is equal to the logical maximum number of line cards (128) that can be accommodated in one ONU.
Noting that the number is much smaller than the number of ONUs (32) that can be accommodated in U,
A table of U units and a storage area of 2 line card units
The storage area is managed separately and the storage area is dynamically allocated.

With this configuration, the same ON is achieved as compared with the prior art.
It is possible to read out information from a plurality of line cards accommodated in U at high speed, while reducing the increase in the amount of memory required for storing line card information. Further, even when the number of line cards increases, the increase in time required for setting and acquisition can be reduced, and the increase in required memory capacity can be reduced.

(Embodiment 3) Next, Embodiment 3 of the present invention will be described. FIG. 6 shows the configuration of the present embodiment. As shown in FIG. 6, in the third embodiment, the memory 13 is different from that in the second embodiment. FIG. 7 shows the configuration of the memory 13.

FIG. 7 shows a configuration example of the table 14 and the line card information area 12. In this embodiment, the memory is composed of these two blocks.

The table 14 is provided with a line card information update flag in addition to the start pointer of the line card control information area and the number of accommodated line cards for each line card as in the second embodiment. As an example, ONU # 2 in FIG. 7 indicates that the information of the accommodated line card has been updated.

After recognizing that this flag has become 1, the OSU sends control information to the line card from the line card having the smallest start pointer. O
Since ps knows the relationship between the number of line cards accommodated in each ONU and the line card that updates information, polling of the line card is restarted, polling of the desired line card is completed, and the information is updated. The time to complete can be estimated in advance.

Therefore, according to the configuration of the present embodiment, Ops does not need to periodically check the status of line card polling to confirm whether or not the information update of the desired line card has been completed, and delays other processing. It is possible to do without.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described. FIG. 8 shows the configuration of the present embodiment. As shown in FIG. 8, in the fourth embodiment, the memory 15 is different from that in the third embodiment. The configuration of the memory 15 is shown in FIG.

FIG. 9 shows a configuration example of the table 16 and the line card information area 12. In this embodiment, the memory is composed of these two functional blocks.

The table 16 stores the restart polling line card number in addition to the start pointer of the line card control information area, the number of accommodated line cards, and the line card information update flag for each line card as in the third embodiment. As an example, ONU # 2 in FIG. 9 indicates that line card polling is restarted from the line card with the line card pointer "10".

The restart polling line card number indicates a line card pointer of the line card whose information has been updated or a local number inside the ONU.
Set from s. FIG. 9 shows an example in which a line card pointer is used as the actual number. After recognizing that the line card information update flag has become 1, the OSU sends control information to the line card from the line card indicated by the restart polling line card number.

As a result, the line card that has updated the information can be polled at the earliest, and the information can be updated at the earliest. .

As described above, according to the configuration of the present embodiment, it is possible to reduce the time required for updating the information of the line card by performing polling of the line card for which information has been updated before other line cards. is there.

(Embodiment 5) Next, Embodiment 5 of the present invention will be described. FIG. 10 shows the configuration of the present embodiment.
As shown in FIG. 10, in the fifth embodiment, the memory 17 is different from that in the fourth embodiment. FIG. 11 shows the configuration of the memory 17.

FIG. 11 shows a configuration example of the table 18 and the line card information area 12. In this embodiment, the memory is composed of these two functional blocks.

The table 18 contains, for each line card as in the fourth embodiment, 1 in addition to the start pointer of the line card control information area, the number of accommodated line cards, the line card information update flag, and the restart polling line card number.
A line card polling completion flag is provided.

The one-line card polling completion flag is
After Ops notifies OSU of the update of the line card information, polling of the first line card (specifically, the line card indicated by the restart polling line card number) is completed, and the information update is completed. Set 1 later. After that, when Ops notifies the OSU of the update of the line card information, it returns to 0.

By monitoring this flag after updating the line card information, the Ops can quickly and reliably recognize the completion of the information update of the corresponding line card.

As described above, according to the configuration of the present embodiment, by providing the flag for notifying the completion of the information update, for example, in an environment where a communication error or the like easily occurs between the OSU and the ONU, the line card information update is performed again. Even when the execution is delayed, Ops recognizes the completion of the line card information update and can execute the next process without delay.

Embodiment 6 Next, Embodiment 6 of the present invention will be described. FIG. 12 shows the configuration of the present embodiment.
As shown in FIG. 12, in the sixth embodiment, the memory 19 is different from the fifth embodiment. FIG. 13 shows the configuration of the memory 19.

FIG. 13 shows a configuration example of the table 20 and the line card information area 12. In this embodiment, the memory is composed of these two functional blocks.

The table 20 contains the start pointer of the line card control information area, the number of accommodated line cards, the line card information update flag, the restart polling line card number, and the completion of line card polling for each line card as in the fifth embodiment. The polling completion flag for all line cards is accumulated in addition to the flag.

The all-line card polling completion flag is
After the Ops notifies the OSU of the update of the line card information, 1 is set when polling for all the accommodated line cards is completed for each ONU. Then O
When the update of the line card information is notified from the ps to the OSU, the value is reset to 0.

After updating the line card information, Ops monitors this flag to quickly and reliably recognize that the transmission of the control information to all the line cards accommodated in the ONU is completed.

As described above, according to the configuration of this embodiment, O
By providing a flag for notifying the completion of information update of all line cards for each NU, for example, the line card information update is re-executed in an environment where a communication error or the like easily occurs between the OSU and the ONU, and the completion is delayed. Even in such a case, Ops can confirm the completion of the information update of all line cards and execute the next process for each ONU without delay.

In addition, with the configuration of this embodiment, Ops can omit the timer until the polling of the line card for each ONU is completed. It can be omitted.

The above embodiment is a preferred example of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.

[0089]

As described above, according to the present invention, the operation system (Ops) and the optical network unit (SL)
By transferring the line card information in the same optical network unit (ONU) between T), line card information in the same ONU can be set and read at high speed. Furthermore, by managing the line card information storage memory using a table, it is possible to suppress an increase in the required memory amount.

By providing a line card information update flag in the ONU, Ops can estimate the information update time of a specific line card by initializing the order of transmission of control information to be sent to the line card. It is possible to proceed to the next processing without waiting for the completion of the transmission of the control information.

By providing the restart polling line card number, communication with the line card whose information has been updated can be performed before other line cards, and the time required for updating the information of the line card can be reduced.

By providing a one-line card polling completion flag, Ops can recognize the completion of line card information update even in an environment where a communication error or the like easily occurs between OSUs and ONUs, and perform the next processing without delay. it can.

By providing an all line card polling completion flag, Ops recognizes that all line card information has been updated even in an environment where a communication error or the like is likely to occur between OSUs and ONUs. In addition, Ops can omit the timer until the polling of the line card for each ONU is completed, so that the process of determining whether the information update of the line card is completed / incomplete can be omitted. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram of an optical line terminal according to a first embodiment of the present invention;

FIG. 2 is a diagram illustrating a configuration example of a memory according to the first embodiment of the present invention;

FIG. 3 is a diagram showing a communication flow between an operation system and a service interface card according to the first and second embodiments of the present invention.

FIG. 4 is a block diagram showing a configuration between an operation system and a service interface card according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a memory according to a second embodiment of the present invention;

FIG. 6 is a block diagram showing a configuration between an operation system and a service interface card according to a third embodiment of the present invention.

FIG. 7 is a diagram illustrating a configuration of a memory according to a third embodiment of the present invention;

FIG. 8 is a block diagram showing a configuration between an operation system and a service interface card according to a fourth embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of a memory according to a fourth embodiment of the present invention.

FIG. 10 is a block diagram illustrating a configuration between an operation system and a service interface card according to a fifth embodiment of the present invention.

FIG. 11 is a diagram showing a configuration of a memory according to a fifth embodiment of the present invention.

FIG. 12 is a block diagram showing a configuration between an operation system and a service interface card according to a sixth embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of a memory according to a sixth embodiment of the present invention.

FIG. 14 is a block diagram showing a configuration between a conventional operation system and a line card.

FIG. 15 is a diagram showing a configuration example of a conventional memory;

FIG. 16 is a diagram showing a communication flow between a conventional operation system and a line card.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Operation system (Ops) 2 Operation system interface 3 Hardware control part 4 Memory in Embodiment 1 of the present invention 5 Optical network unit (SLT) 6 Optical network unit (ONU) 7 Line card (LCd) / Line card) 8 Down line card information area 9 Up line card information area 10 Table inside memory in Embodiment 2 of the present invention 11 Memory in Embodiment 2 of the present invention 12 Down / up line card information area 13 Implementation of the present invention Memory in Embodiment 3 14 Table in Memory in Embodiment 3 of the Present Invention 15 Memory in Embodiment 4 of the Present Invention 16 Table in Memory in Embodiment 4 of the Present Invention 17 Memory in Embodiment 5 of the Present Invention 18 Internal memory in the fifth embodiment Memory internal table 21 memory 22 downstream line card information area 23 upstream line card information area in the embodiment 6 of the memory 20 present invention in the embodiment 6 of table 19 present invention

 ──────────────────────────────────────────────────続 き Continued from the front page F term (reference) GG12 HH03

Claims (16)

[Claims] 1. An optical network unit comprising a storage unit for collectively storing control information and status information of a plurality of line cards in one optical network unit. 2. One of the number of line cards actually accommodated in one optical network unit or the number of line cards that can be logically accommodated in one optical network unit.
2. The optical network unit according to claim 1, further comprising an information storage area covering both of them. 3. The optical subscriber line according to claim 1, wherein the management of the line card is performed separately for the information for each optical network unit and the information management for each line card. End panel. 4. The information of the plurality of line cards is turned on.
A table of U units and a storage area of 2 line card units
4. The optical network unit according to claim 1, wherein the optical network is separately managed and a storage area is dynamically allocated. 5. The optical subscriber according to claim 1, further comprising identification information indicating that the optical network unit accommodates a line card for setting or acquiring information. Line termination panel. 6. The optical network unit according to claim 1, further comprising identification information for identifying a line card transmitting control information with priority. 7. After receiving an instruction for setting or obtaining line card information from the operation system, each optical network unit has identification information indicating that information setting or obtaining of the first line card is completed. The optical network unit according to any one of claims 1 to 6, wherein: 8. After receiving an instruction to set or acquire line card information from the operation system, each optical network unit has identification information indicating that information setting or acquisition of all line cards has been completed. The optical network unit according to claim 1, wherein: 9. A line card for an optical network unit, comprising a storage process for collectively storing control information and status information of a plurality of line cards in one optical network unit. Management method. 10. The number of line cards actually accommodated in one optical network unit, or the number of line cards that can be logically accommodated in one optical network unit, or 10. The line card management method for an optical network unit according to claim 9, further comprising an information storage area covering both of them. 11. The optical subscriber line according to claim 9, wherein the management of the line card is performed separately from the information for each optical network unit and the information management for each line card. Line card management method for terminal boards. 12. The information of the plurality of line cards is
12. The optical subscriber line termination according to claim 9, wherein the storage area is dynamically allocated and managed by being divided into two tables, a table for each NU and a storage area for each line card. Board line card management method. 13. An optical network unit according to claim 9, wherein said optical network unit has identification information indicating an optical network unit that accommodates a line card for setting or acquiring information.
3. The line card management method for an optical subscriber line termination panel according to any one of 2. 14. A line card management method for an optical network unit according to claim 9, further comprising identification information for identifying a line card to which control information is transmitted with priority. 15. After receiving an instruction to set or acquire line card information from the operation system, each optical network unit has identification information indicating that information setting or acquisition of the first line card has been completed. 15. The line card management method for an optical network unit according to claim 9, wherein: 16. After receiving an instruction to set or acquire line card information from the operation system, each optical network unit has identification information indicating that information setting or acquisition of all line cards has been completed. The line card management method for an optical network unit according to any one of claims 9 to 15, wherein: