TW200845613A - PON apparatus with connection status and LLID displaying capability - Google Patents

Abstract

PON apparatus with connection status and LLID displaying capability. The purpose of this PON apparatus is to solve display network communication status and identifier information problems on the PON apparatus. The PON apparatus is application for Multi-Point Control Protocol (MPCP) and LLID to combine Programmable Logic Device and display unit with PON apparatus and enable PON apparatus to display network communication status and identifier information.

Description

200845613 IX. Description of the Invention: [Technical Field] The present invention relates to a passive optical network (PON) device having a display connection state and a logical link identifier, and particularly relates to an application The characteristics of the Multipoint Control Protocol (MPCP) and Logical Link Identifiers (LLID), combined with programmable logic elements and display units to display the connection status and logical link identification of the device. [Prior Art] With the rapid growth of the global Internet, traditional networks have been unable to meet the needs of high-speed resource transmission applications. The maturity of the optoelectronic industry technology and the diversification of product applications have provided timely and rapidly growing global Internet networks. A lot of bandwidth. Compared with the traditional cable transmission method, the optical fiber transmission has the characteristics of large capacity, low loss, and strong anti-electromagnetic interference capability. Therefore, as the cost of optical fiber transmission is gradually reduced, network fiberization is an inevitable development trend, and various optical fibers are used. The main broadband network (FTTx) technology is racing to emerge. The FTTx technology is mainly used to access the network fiber, ranging from the regional telecommunications room to the user terminal equipment. The important central office equipment includes the optical line terminal (〇 tical LT) and the user terminal equipment. Network unit (〇ptical step plus

Unit, ONU) or Optical Network Terminal (ONT). There are two main ways of fiber topology. The first method is direct connection of optical fibers. It is a topology of point-to-point (P2P). It has the characteristics of simple operation, easy management, exclusive fiber bandwidth, etc. The amount is large, so the cost investment is large; the second method is P0N technology, and the entity topology map is shown in Figure 1 and is a topology of Point to Multi-Point (P2MP). The optical splitter (Optical Splitter) l01 divides the optical path from the OLT100 into multiple channels to the customer end. The 200845613 ONU102' has less fiber usage and saves the cost of construction and maintenance. Therefore, PON technology is the most favored in the fiber topology. . At present, in the PON market, on the LT of the central office, the information about the connection status and identity of the NU is mainly learned by logging in to the LT management software interface. In this way, only those who have the administrative authority can log in to the LT to obtain the message of the status and identity identification of the Nu connection. The general maintenance personnel located on the maintenance of the first line must know the information through the personnel with administrative authority. Equipment maintenance is possible. As a result, the maintenance process is cumbersome and inconvenient to manage, and it cannot be known and disposed of immediately after the disconnection situation occurs. On the general user side, only the basic connection status is displayed on the NU. The light number display cannot provide further identification information for the network administrator. Therefore, when there is a problem with the system, it is not a good design to increase the difficulty of detection, and it needs to be improved. In order to cooperate with the PON system in the future, it is easier to manage and maintain the system. In view of the various problems to be solved by the above-mentioned conventional technologies, the inventor of the present invention needs to invent the connection state and the logical link identifier. The p〇N equipment is a modified and innovative technology that completes the 2P〇N device with display connection status and logical link identification. SUMMARY OF THE INVENTION The present invention is a p〇N device having a display connection state and a logical link identifier. The purpose is to integrate the programmable logic component and the display unit through the characteristics of the MPCP and the LLID to complete the determination of the connection according to the display unit. The PON device with status and identity identification solves the problem that the PON device cannot display the connection status and the logical link identifier in the PON system. In order to achieve the above object, the present invention provides a PON device having a display connection status and a logical link identifier, wherein the PON device refers to 6 200845613 OLT and ONU 'the following is further directed to the composition and signal receiving process of the LT and the art respectively. Description. In the OLT towel 7; not composed of optical path, circuit, optical transceiver module, multiplex/demultiplexer, 0LT system single chip, towel processor, programmable logic component and display unit, and connected state and The logical link identification signal determines the connection status and the identity identification. When the OLT receives the optical signal through the optical fiber of the optical path, the optical signal is transmitted to the optical transceiver module for switching between the optical signal and the audio signal, and is multiplexed. / Jie Xigong is to solve the multiplexed signal of the converted differential signal into the interface signal to the system single chip ' 〇Lma9>; will convert the interface signal into packet signal read for packet processing 'in the packet processing group / During the process of decapsulating the packet, the connection status signal and the LLID fiber are known, and the two signals are transmitted to the central office (4) for encoding, and then the corresponding status signals are output to the programmable logic element, and the programmable logic element is The received plurality of status signals are decoded, logically operated, and corresponding trigger signals are generated to trigger the display unit, and the 0LT can display the connection status and the function of the lud. In the ONU, the optical circuit, the circuit, the optical transceiver module, the 〇nu system single chip, the central processing unit, the programmable logic component and the display unit are included; the identity recognition is determined according to the 1^1〇 signal. The component composition and signal processing flow are similar to those of 〇LT, and will not be described here. The following only explains the differences. In terms of component components, the ONU optical transceiver module uses a cheaper 13um wavelength laser to reduce the cost of the customer premises equipment. In addition, the ONU system integrates multiplex/demultiplex modes on a single chip, simplifying the hardware architecture of the ONU. Therefore, in the signal receiving process, the optical transceiver core group directly sends the converted differential signal to the ONU system single chip, and the multiplexer/demultiplexer in the NU system single chip converts into the interface signal. In the preferred embodiment of the present invention, the programmable logic component is a compound programmable 7 200845613 logic component 'the display unit of the OLT is made of a material-emitting diode green; the display unit of the _ is composed of at least one light-emitting diode In the point-to-multipoint network architecture, the 〇Ν device containing the present invention can display the LUD of the optical communication device at the 0LT of the central office and the 0NU of the user at the user end. In order to provide the network management of the central office to identify the identity identification information required for network failure. When there is a problem with the connection, the network manager of the central office can identify the information through the 〇 身 identity identification information provided by the user, and further determine the problem as the connection status provided by the connected OLT display unit of (4). The invention will be further described in detail by the following description and the invention. (2) Present [Embodiment] The present invention mainly proposes a device having a display connection state and a logical link P0N. As described above, the P0N system is mainly a p2Mp form, and the following is a schematic diagram of a PQN system towel, and the LLID is in the The package is delivered and the inside is dressed up ^^ _〇NU is like Qur doing

Brief description. ~ First of all, 'the second picture will be used to explain the packet transmission process in the brain system. In this figure, there is a central office device 〇LT2〇1, an optical splitter 2, and four client devices. The ONU2G5 and the four users 2G8 form a typical P0N system, in which the user 2〇8 represents a device connected to the 〇NU, for example, a device with a brain, a handheld personal digital assistant, and the like. Since p〇N is in the form of p2Mp, the 0LT passes the download packet to each user to be transmitted by broadcast, and the _01 passes the download packet to pass the light divergence ^ 2G3 divides the optical signal into multiples _ The packet 204 is transmitted to All ONU2G5, each 〇NU2()5 will identify whether it is its own download packet and only receive its own download packet 206 according to the LLID in the 200845613 packet 204, and then will belong to its own download packet 2〇6 Passed to each user 208 'where the LLID is assigned by the OLT 201 when the ONU 205 joins the PQN. When each user 208 uploads data to the LT201 via the ONU 205, the uploading packet 2〇7 of the Xiang user will be collected into the same fiber, so the Time-Division Multiplexing (TDM) or Wavelength multiplexing

(Wavelength Divi-Multixing, the transmission method of the object is to avoid the collision of multiple uploading packets 207. After explaining the packet transfer process between the OLT and the ONU, the next step will be through the "Picture 3". In the meantime, the PON system is composed of a central office equipment 〇LT3〇4, an optical splitter 203 and a three-small terminal device (8). - a media access control protocol and a peer-to-peer simulator, and a peer-to-peer simulator 305, three media access control ports 306 and an Ethernet bridge respectively corresponding to the 00 00 Gradually. When 〇NU-A is willing to send a package, ONU-B3 ah' information will be attached to the LL 与 LLID and LLID via the Congyi Access Control Unit 302, sealed, sent, and then diverged. Please enter Ltr and pass TT m W, and enter 〇 LT304 point-to-point simulator 305 to resolve LLID 'send to the corresponding media storage 307 to transfer the packet to (10) u 皋 ' 'Asia via Ethernet bridge 璋Attached to (10)u B: ΓΓ corresponds to _ access control

After _ _, broadcast _ 3 _ H ^ 〇 NU-C; 〇 ° 3〇 2 , 30S ^

After that, the packet 308 that is not your own is discarded.日隹^'LLID 9 200845613 It can be known from the description of the above two packet transmission processes that LLID plays the role of identity recognition in the point-to-point simulation in the P2MP topology, and the llid in the p〇N is determined by the central office. The OLT allocates and informs the user terminal NU according to mpcp. Therefore, the following will explain the 0NU automatic discovery program in the P0N system through "Fig. 4". How does NU obtain the LLID assigned by MPLT through MPCP. The ONU automatically discovers the private sequence according to the IEEE802.3ah specification and uses the MPCP protocol to achieve the automatic discovery of 〇NU. It can be seen from the figure that the entire 〇NU automatic discovery program includes the discovery packet ρ 401, the registration time slot 402, and the randomization. The delay 403, the registration request packet 404, the response registration packet 405, the confirmation packet 406, the registration confirmation packet 4〇7, etc., the packet delivery flow privately, first the OLT broadcasts the discovery packet 401, wherein the 〇LT allows the registration time slot 402 to retire the new When the added 〇NU can be registered, the new entrant ^ after the entry is allowed to register, in order to avoid multiple new shackles and registration at the same time, the collision is delayed, so it is necessary to delay the delay for 4〇3, and then The registration request packet 404 is issued to the 0LT, and after the registration is allowed (4) to the registration request packet 404, the response to the LUD assigned to the UI is issued, and the registration packet 405 to 0NU is issued, and then the LT is reissued. The standard confirmation packet is 4〇6, and finally the ONU cuts the registration confirmation packet 4〇7 to (10), and thus the automatic discovery of the coffee is completed. 0 Only based on the ubiquitous shortage of the P0N device in the conventional PON system. Loss, once the user's reaction network connection is broken, the network administrator of the central office must log in to the OLT management interface connected with it to know the connection status of the client and do the contention. Therefore, the present invention provides a (10)N device having a display connection status and a logical link identifier, which is mainly for providing a network administrator to learn the status of the user terminal by the display unit of the qLT, and to eliminate the continuation of the login management interface. The process, and the general user can also know the LLID obtained through (10) by using the 200845613 ONU 7F single 70 to provide the identity identification information required by the network administrator to detect. &16, "第511" and "图图6" are the P0N devices having the display connection, the sadness and the logical link identifier, as shown in Figure 5, the PON device is applied to the OLT500. The block diagram is mainly composed of a circuit 5, a light path 5, a light collection group, a multiplexer/demultiplexer 5G4, a LT system single chip 5 () 5, a central processing unit 507, and a programmable logic element. 508 and display components such as $5〇9. The p-telephone 'optical transceiver core group 503 is used to perform conversion between the optical signal and the differential signal; the multi-/demultiplexer 504 is configured to perform conversion between the differential signal and the interface signal; Jingjing milk, using the interface of the interface to block the signal and group/unpacking, in the process of group/unpacking, know the connection status signal and LUD signal; the central processing is 507, receiving the OLT system single chip 5连5 transmitted connection status and logical link identification signal 506, after encoding processing, output corresponding number of status signals; programmable logic element 508, receiving several status signals and decoding these status signals, 35 different operations The corresponding trigger signal is generated; the display unit 5〇9 receives the corresponding trigger (the signal is used to trigger the display unit 509 to display the connection state of the P0N device and the LLID'. The display unit 509 in the OLT 500 is a four-by-eight matrix type led The connection status and LLID of 32 ONUs are displayed by using different color lights and illuminating. As shown in Fig. 5, the OLT 500 receives the optical signal transmitted from the optical fiber via the optical path 502, and the optical signal enters the optical transceiver module. Group 5〇3 After the amplifier, the filter, and the decoder become the differential telecommunication signals, the differential telecommunication signals are converted into the Ten Bit Interface (TBI) or the GMII (Gigabit Media Independent hiterface) through the multiplex/demultiplexing crying. The signal is transmitted to the OL DRAM system 505 conforming to the IEEE802.3ah specification, and the 系统 系统 system single chip 505 200845613 is responsible for processing the biliary CP protocol and transmitting the connection status and the logical link identification signal 506. The processor central processing unit 5〇7 receives (10) the system single crystal please be connected, the spring I, and the logical link identification signal 5〇6 are encoded and processed, and the % signal is sent to the programmable logic element. The programmable logic component receives a plurality of status signals outputted by the central processing unit 507 and decodes the status signals, and outputs the logic signals to the display unit 5〇9. Finally, the display unit decodes and logics according to the programmable logic element 508. The signal and identity identification output after the operation.

As shown in Figure 6, the block diagram of the PON device applied to the ONU600 is mainly composed of a circuit 602, an optical path mine, an optical transceiver module, a group 603, an ONU system single chip 6〇4, a central processing unit 606, and a programmable program. Logic element 607 and display unit _ ^ composition; wherein the function of each element is the same as the aforementioned 〇LTA, so it will not be described, only the difference is made, in 〇NU_巾, ◦ 系统 system single chip _ Integrating multiplex/demultiplexing 1, therefore, the NU system, system single chip 604 is used to perform the conversion between the differential nickname 14 interface „fl number and the group/unpacket, and in the execution group/decapsulation process After knowing the LUD, the logical link identification signal 605 is transmitted to the central processing unit 606. In addition, in the display unit 6〇8 is a led column composed of five LEDs, and the total annihilation of the light number indicates the change of 32 LLIDs. After the optical signal is transmitted to the optical transceiver module 6〇3 via the optical path 602, the optical signal enters the amplifier, the filter and the decoder inside the optical transceiver module 603 to become a differential electrical signal, and then transmitted to the IEEE8〇2 3ah specification. Then NU system single chip 6〇4, and through the ONU system single chip 6〇4 The multiplexer/demultiplexer converts the differential signal into a ten-bit Ten Bit Interface (TBI) or GMII (Gigabit Media Independent lnterface) signal and transmits it to the media access controller for processing 12 200845613 MP 〇> and transfer the logical link identifier 峨6〇5 to the central processing community

/:az: »/ Too... A σσ T processor 606 receives a 〇NU system single chip 6〇4

The rear display unit 608 displays the identity identification according to the signal output by the programmable logic component 6〇7, the display unit 608, and the most logical operation. For the display mode of the PON device of the present invention on the OLT, please refer to "Fig. 7". For the convenience of the table 7F, the light-emitting diode of the single color is not included in the towel. Light_Emitting Diode, LED) and status ^ Not only the matrix type LED 701, the matrix type LED7〇1 has a total of led, numbered from left to right from top to bottom are marked as 1-32, each LED is used to indicate First, the corresponding ONU, so each OLT7〇〇 can represent at least 32 user-end sorrows, but this is only an embodiment, in fact, it can be ambiguous to different needs and different e-counts, wherein the green light 702 The representative connection is normal, the green light flashes 7〇3 means the packet is being transmitted, the red light 704 is unconnected or cannot be connected, and the light is off. 7〇5 means unassigned connection, number 21, number 25, number 29 bright red Lamp 704 represents that the three numbered ONUs cannot be connected. For the display mode of the PON device of the present invention in 〇NU, please refer to "Fig. 8". The display unit of the ONU800 of the user terminal is composed of five 1^1)8〇1, five 1 pull ^ from top to bottom. The order number is 4, the number 3, the number 2, and the number 〇, which represent the 4th power of 2, the 3rd power of 2, the 2nd power of 2, the power of 2, the power of 2, and the power of 2, respectively. To display 32 kinds of LLIDs. As shown in the figure, for example, when number 4, number 3, number 2, and number i 13 200845613

When the LED is lit at the same time, 〇> Τ represents the 4th power of 2 plus 2 to the power of 3 plus 2 to the power of 2 and 2 to the sum of the 1st birthday, so the 0NU The LLID is 31, and the user can perform the identification of the _(4) points according to this. △ Γ 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 实际 本 本 本 本 本 本 本 本 本 本 本 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅 阅When joining Guangyi and Weng Tuopu, the broadcast discovery packet 401 is received via the optical fiber 9〇1, and the optical packet (10) is cut into the optical transceiver module 603 and converted into a differential electrical differential point §fL. And according to the receiving discovery packet, after entering the allowed registration time slot 4〇2, the packet 404 is obtained again. The signal, the 0NU system single chip 604 receives the message of the registration time slot 402 in the 401, and randomly sends a registration request seal & 404 after a delay of 403 via the optical fiber 9〇1 to the optical path of the 0LT to enter the light collection. The nuclear group 503 is converted into a differential signal, and the multiplexer/demultiplexer 5〇4 receives the differential signal 唬 'Asian differential nickname converted to TBI (Ten Bit autopsy (four) or (10) chest ship MedmIndependentlnterface) signal, 〇 LT / system single chip 5〇5 receives the network protocol of the C or GMI1 signal processing CP and configures - the LUD of the number 31 corresponds to the 0NU 'the LUD of the number w is added to the response registration packet secret to the 〇NU, and The green light flashes 7〇3 in the matrix coffee 7〇1 number 31 (4). 〇LT delays transmitting the acknowledgment packet for a period of time after transmitting the response registration packet/〇 NU receives the response registration packet 4〇5 transmitted by OLT700 via the fiber optic cigarette, and then LuD is selected from the point-to-point simulator of the ONU system single chip 604. The packet is taken out, and after the LLID is number 31, the logical link identification signal 6〇5 is output, and the registration confirmation packets 407 to 0LT are transmitted. The central processing unit 6〇6 receives the LLID of the 4 output of the 系统 system 14 200845613=曰曰, and outputs a plurality of status signals by the decoding process. The private logic 7L 607 receives the number of status log pairs output by the central processing unit 6G6. The bribe code and the logical operation charm are at least—the side 峨, the _ _ receiving the trigger signal, trigger number 4, number 3, number LE: D. ^ After the LT received the registered cancer packet, the LED of the matrix LED701 number 31 was changed from Green Qing 7G3 to Green Light 7 () 2. If the handshake process fails, the LED 701 is turned on, and the LED of No. 31 is flashed by the green light 7〇3 to become a red light. . At this point, when the user of the user terminal finds that the connection is interrupted, the ONU800 can notify the network administrator of the local office of the message displayed by the user. When the network administrator thief Xiaoxuan reverses the LUD, he can give it. 〇 lt7 (8) unit 701 knows that the current number 31 client can not be connected instead of unconnected. Although the present invention has been disclosed above in the foregoing embodiments, and to limit the present invention, any person who is familiar with the present invention may make some changes and _ in the spirit and scope of the present invention. The patent protection of the present invention is based on the definition of the patent application. [Simple description of the diagram] The first picture is a topology diagram of the PON secret towel point-to-new network entity. 2, the diagram of the p〇]v^ system towel point to the New Zealand network packet transmission. Figure 3 is a schematic diagram of packet transfer between 〇NU in the p〇N system. The fourth picture is pon, the system 〇NU automatic discovery program diagram. Figure 5 is a block diagram of the P〇N device of the present invention applied to 〇LT. Figure 6 is a block diagram of the P〇N device of the present invention applied to 〇NU. Figure 7 is a schematic diagram showing the display mode of the PON device of the present invention applied to the 〇LT LT 200845613. Fig. 8 is a schematic view showing an embodiment of a display mode in which the PON device of the present invention is applied to an ONU. Figure 9 is a schematic diagram showing an embodiment of a display mode of a PON device of the present invention applied to an OLT and an ONU. [Main component symbol description] 100 OLT 101 optical splitter 102 ONU 201 OLT 202 download packet 203 optical splitter 204 split multiplexed download packet 205 ONU 206 user download packet 207 user upload packet 208 user 300 ONU 301 Media Access Control 槔 302 Point-to-Point Simulator 303 Upload Packet 304 OLT 305 Point-to-Point Simulator 306 Media Access Control 璋 16 200845613 307 Ethernet Bridge 308 Download Packet 401 Discovery Packet 402 Allow Registration Time Slot 403 Random Delay 404 Registration Request packet 405 Respond to registration packet 406 Marriage packet 407 Registration confirmation packet

500 OLT 501 circuit 502 optical path 503 optical transceiver module 504 multiplexer/demultiplexer 505 OLT system single chip 506 connection status and logical link identification signal 507 central processing unit 508 programmable logic element 509 display unit

600 ONU 601 circuit 602 optical path 603 optical transceiver module 604 ONU system single chip 17 200845613 605 logical link identification signal 606 central processing unit 607 programmable logic element 608 display unit

700 OLT 701 Matrix LED 702 connection normal 703 packet transmission 704 connection failed or unconnected 705 Unassigned connection

800 ONU 801 LE:D column 901 fiber

18

Claims (1)

200845613 X. Patent application scope: 1. A p〇N device with a display connection status and a logical link identifier, the PON device is configured to receive an optical signal from a head-shaped system, wherein the PON device is at least The optical transceiver module is configured to perform conversion between the optical signal and a differential signal; and a multiplexer/demultiplexer is configured to perform conversion between the differential signal and an interface signal; An OLT system single chip is used to perform conversion and group/decapsulation of the interface signal and a packet signal, and during the group/unpacking process, a connection status signal and a logical link identifier are obtained (L〇 Gical Unk Identifiers, LLID); a central processing unit that receives the connection status signal transmitted by the single chip of the 0LT system and the LLID signal is outputted to output a plurality of status signals; a programmable logic element receives Corresponding to a plurality of status signals and decoding the sth. §, the logic operation generates at least one trigger signal; and a display unit, receiving the at least one trigger signal, triggering Display unit for displaying a connection state of the PON LLID equipment; wherein the device between the plurality of PON based 〇NU and proceed through MPCP handshake communication process. 2. PON device with display connection status and logical link identifier as described in item 1 of the patent application scope, wherein the interface signal is a ten-bit interface (Ten 乜 Red Interface, TBI), GMII (Gigabit Media Independent) Interface) and 19 200845613 The signal format of the reduced bit interface (RTBI/RGMII). 3. The PON device having the display connection status and the logical link identifier as described in claim 1 of the patent application scope, wherein the OLT system single chip system conforms to the IEEE802.3ah specification and is used for processing media access control of the PON system ( Media Access Control (MAC), Dynamic Bandwidth Allocation (DBA), Operation Management and Maintenance (Operation), and Data Encryption (Security). The PON device is provided with a connection status and a logical link identifier, wherein the connection status signal is a state generated after the MPCP handshake communication process is completed in the PON system. 5. The PON device having the display connection status and the logical link identifier as described in claim 1 wherein the LUD is the identification identifier assigned by the PON device after the NU is added to the PON system. 6. A PON device having a display connection status and a logical link identifier as described in claim 1 wherein the programmable logic element is a composite programmable logic element. 7. A P0N device having a display connection status and a logical link identifier as described in claim 1, wherein the display unit is a liquid crystal display or at least one light emitting diode. 8. The P0N device having the display connection status and the logical link identifier as described in claim 1 of the patent application scope, wherein the p0N device is a LT. A PQN device having a display connection status and a logical link identifier, the PON device is configured to receive an optical signal from one of the P0N systems, and the PON device in the 2008 20081313 includes at least: an optical transceiver module The rib performs the conversion between the optical signal and the silk signal; the η - 0NU secret sheet ^, the rib performs the conversion between the audio signal and the interface signal and the group/decapsulation packet, and is in the process of executing the group/unpacking package , knowing - logical link identification (Logical Link version resistant, L - central processing H, receiving the LLID of the QLT system single chip to transmit the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ And (4) the plurality of mineral signals should be decoded and the state signals are decoded, and the logic operation generates corresponding at least one trigger signal; and a display unit receives the at least one trigger signal, and the trigger display unit is configured to display the connection of the P0N device. State and LUD; where 'the PON device communicates with the 0LT through the vertical (3). 10. The P0 with the display connection status and logical link identifier as described in item 9 of the patent application scope. The N device, wherein the 〇NU system single chip is in accordance with the IEEE802.3ah specification for media access control (Multi-Point Control Protoc〇1, Mpcp) for communicating with the (10). A PON device having a display connection status and a logical link identifier as described in claim 9 of the patent scope, wherein the llid is an identification identifier assigned by the 0LT after the p0N device is added to the p〇N system. A P0N device having a display connection state and a logical link identifier as described in item 9, wherein the programmable logic component is a composite programmable logic component. 21 200845613 13. As described in claim 9 The PON device having the display connection status and the logical link identifier, wherein the display unit is a liquid crystal display or at least one light emitting diode. 14. The display connection state is as described in claim 9 A PON device identified by a logical link, wherein the PON device is an ONU.