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WO2006001073A1 - Telephone a systeme pon acceptant une methode de test de port et systeme pon - Google Patents

Telephone a systeme pon acceptant une methode de test de port et systeme pon Download PDF

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Publication number
WO2006001073A1
WO2006001073A1 PCT/JP2004/009361 JP2004009361W WO2006001073A1 WO 2006001073 A1 WO2006001073 A1 WO 2006001073A1 JP 2004009361 W JP2004009361 W JP 2004009361W WO 2006001073 A1 WO2006001073 A1 WO 2006001073A1
Authority
WO
WIPO (PCT)
Prior art keywords
test
telephone
interface
subscriber
pon system
Prior art date
Application number
PCT/JP2004/009361
Other languages
English (en)
Japanese (ja)
Inventor
Ken Murakami
Hironori Terauchi
Tetsuya Yokotani
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP2004/009361 priority Critical patent/WO2006001073A1/fr
Publication of WO2006001073A1 publication Critical patent/WO2006001073A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements

Definitions

  • the present invention includes a subscriber telephone terminal, a subscriber side device, a station side device, and a transmission medium for connecting them, and performs data transmission / reception by ATM cell or Ethernet-based frames, and provides telephone service details.
  • This is related to the PON system to be accommodated, and in particular, to the PON system telephone accommodation port tasting test method that tests the normality of a remote telephone accommodation port triggered by a command from the telephone exchange m.
  • a point-multipoint optical transmission system optical bus
  • PDS Passive Double Star
  • PON Passive Optical Network
  • a master station OLT: Optical Line Terminal
  • OLT Optical Line Terminal
  • slave stations ON U: Optional
  • the upstream signals generated by multiple ONUs are time-division multiplexed by the demultiplexer (star power bra) in response to the transmission permission signal as the downstream signal generated by the OLT and transmitted to the OLT.
  • the downlink signal generated by the OLT is demultiplexed by a demultiplexer and transmitted to each ONU, and bidirectional communication is performed between the OLT and multiple ONUs.
  • This method has the advantage that the optical transmission equipment and optical fiber can be used economically because multiple ONUs share a single OLT.
  • the telephone accommodation port remote test method in the PON system has conventionally been divided into a device that accommodates the interface with the telephone messenger that generates the test start trigger and the telephone accommodation port that is the subject of the test.
  • Physical normality test of telephone accommodation port A method has been proposed in which a test management channel is provided with a device to be executed, and a test operation is performed using a management protocol transmitted on the management channel (for example, Non-Patent Document 1). .
  • FIG. 1 is a block diagram for explaining a telephone accommodation port remote test method in a conventional PON system.
  • This section describes the method for remote testing of telephone accommodation ports in the B-PON (Broadband PON) system.
  • VTO A Voice Transfer over ATM
  • AAL 2 ATM Adaptation Layer type 2
  • ⁇ in the management channel called LES—EOC (Loop Emulation Service-Embedded Opera- tons Channel) (AA L 2 channel identifier is 9)
  • Remote testing of telephone accommodation ports is performed by storing and transferring SNMP (Simple Network Management Protocol) in the payload part of the frame mode bearer service specified in I. 366.2.
  • the gateway device 3 connected to the network side of the OLT 2 accommodates the V interface 6.
  • the V interface 6 is a TDM (Time Division Multiplex) interface such as T1, for example, and includes a user time slot 17, a control time slot 15 and a signaling time slot.
  • TDM Time Division Multiplex
  • the gateway device 3 includes an SNMP manager function unit 14. When a remote test start trigger is generated in the control time slot 15 on the V interface 6, the gateway device 3 detects this and detects the SNMP manager. An SNMP message for starting the remote test is generated by the function unit 14, and this is transferred using LES—EOC13.
  • the ATM VCC (Virtual Channel Connection) 18 that accommodates the LES—EOC 13 is a V C C (user V C C) that transfers user traffic.
  • the ONU 1 has an SNM P agent function unit 32 for extracting an SNMP message from the LES—EOC 13 in the user VC C 18.
  • the test control unit 10 is requested to execute the test, a message for notifying the test result is generated, and transferred by LE S—EOC 13.
  • gateway device 3 receives the test result notification message from LES—EOC1 3, it transfers the test result to control time slot 15 on V interface 6.
  • “SetRequest-PDU” is used for a test start message
  • Trap_PDU is used for a test result notification message, but this is not restrictive.
  • FIG. 2 is a block diagram showing details of ONU 1 of FIG.
  • the part indicated by a solid line indicates that the part is configured by hardware
  • the part indicated by a dotted line indicates that the part is configured by software. It is not necessary to be configured, and it may be realized with a similar function.
  • ONU1 encodes telephone traffic to the PCM code in SLIC / CODEC and generates a telephone hook signal as CAS (Channel Associated Signaling). This is mapped to ATM cells by AAL 2, and AAL 2 channels for each telephone port are multiplexed and transferred to user VCC.
  • CAS Channel Associated Signaling
  • CID Channel I dentifier
  • the SNMP agent function unit 32 requests the test control unit 10 to start the test and notifies the test result by an SNMP message.
  • OMC I (0 NU Management Channel Interface) 12 which is an interface for supervisory control in the B—PON system
  • MIB Management Information Bass
  • OMC I 12 control by OMC I 12 is indispensable, and AAL 5 hardware for this purpose, OMC I 12 and MI B 3 3 software are installed. In addition to this, SNMP agent software was required.
  • the PON system has a high demand for the cost of the terminal equipment on the subscriber side, and it is not desirable to implement hardware or software for remote testing.
  • the present invention has been made to solve the above-described problems.
  • the ONU hardware configuration can be simplified, and the control of the telephone receiving port of the PON system can be unified by OMC I.
  • the purpose is to obtain a test method and a PON system. Disclosure of the invention
  • a telephone accommodation port test method for a PON system includes a subscriber-side device that accommodates one or more subscriber telephone terminals, and accommodates one or more subscriber-side devices and is connected to a telephone switch.
  • the telephone accommodation port of the subscriber side equipment Normality test for telephone switch When the command is issued from, the test start command and the test result report notification are transferred using the monitoring control interface of the PON interface.
  • test start command and the test result report notification are transferred by the standard control interface of the PON interface that has been conventionally installed. .
  • FIG. 1 is a block diagram for explaining a telephone accommodation port remote test method in a conventional PON system
  • FIG. 2 is a block diagram showing the details of NU in FIG. 1
  • FIG. 3 shows the present invention.
  • FIG. 4 is a block diagram illustrating the entire PON system according to Embodiment 1 of the present invention.
  • FIG. 4 is a block diagram for explaining a port test method in the PON system according to Embodiment 1 of the present invention.
  • FIG. FIG. 6 is a block diagram showing the internal configuration of the OLT in FIG. 6,
  • FIG. 6 is a block diagram showing the internal configuration of the ONU in FIG. 4, and
  • FIG. 7 is an embodiment of the PON system according to the present invention.
  • FIG. 8 is a block diagram for explaining a port test method in the PON system according to the second embodiment of the present invention.
  • FIG. 9 shows the internal configuration of the OLT in FIG. Fig. 10 is a block diagram showing the internal structure of the NU in Fig. 8.
  • FIG. 11 is a block diagram for explaining a port test method in the PON system according to the third embodiment of the present invention
  • FIG. 1 2 shows an internal configuration of the OLT of FIG. Fig. 13 is a block diagram showing the internal structure of the NU of Fig. 11.
  • BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a telephone accommodation port test method in a PON system and a PON system according to the present invention will be described below in detail with reference to the drawings. It should be noted that the present invention is not limited by this embodiment.
  • FIG. 3 is a block diagram showing the entire first embodiment of the PON system according to the present invention.
  • a plurality of ONUs 1 that accommodate a plurality of subscriber phones 1 0 1 are accommodated in the OLT 2 via the duplexer 5.
  • Gateway 3 is connected to the network side of OLT 2.
  • Gateway 3 is connected to telephone exchange 4 via V interface 6.
  • FIG. 4 is a block diagram for explaining a port test method of the PON system according to the first embodiment of the present invention.
  • the ONU 1 has a telephone accommodating port 11, a test control unit 10, and an OMC I 12.
  • the test control unit 10 is a circuit for confirming the physical normality of the telephone accommodation port 11.
  • OMC I 1 2 is an interface for monitoring and control in the B—PON system, and is an ONU management interface termination point specified in I TU—T Recommendation G. 983.2.
  • OMC I 1 2 of ONU 1 and OMC I of OLT 2 are connected by VCC 16 for OMC I which is a dedicated path.
  • the VC C 16 for OMC I forwards the test start command and the test result report together with the monitoring control message.
  • the S NMP agent function unit of OLT 2 and the S NMP manager function unit 14 of gateway 3 are connected by LES-EOC 13.
  • the test start command is generated by the telephone exchange and transferred to the gateway 3 via the control time slot 15 on the V interface 6.
  • gateway 3 receives a test start command from control time slot 15, SNMP manager function unit 14 replaces it with a test start request message.
  • OLT2 extracts the SNMP message from LE S—EOC 13
  • OMC I message messages type 2 Test
  • OLT2 cellizes this message with AAL 5 and 01. 1 for ⁇ . . 1
  • the ONU 1 that received the test start request message via the VC C 16 for OMC I requests the test control unit 10 to start the test.
  • the test control unit 10 conducts a test for confirming the physical normality of the telephone accommodation port 11.
  • the ONU 1 reflects the test result on the specified remote test entity and generates an OMC I message (message type 2 Test Res ult). This is notified to OL T 2.
  • Gateway 3 receives the SNMP message from LE S—EOC 13 and forwards it to control time slot 15 on V interface 6.
  • FIG. 5 is a block diagram showing the internal configuration of the OLT of FIG.
  • the part indicated by a solid line indicates that it is configured by hardware
  • the part indicated by dotted line indicates that it is configured by software.
  • it does not necessarily have to be configured in this way, and may be realized with a similar function. The same applies to the other figures.
  • the OLT 2 includes an interface unit 20 that terminates the network side interface and the PON interface, and a monitoring control unit 21 that performs monitoring control of the OLT 2.
  • the interface unit 20 and the monitoring control unit 21 are divided into two parts, but it is not necessary to divide them.
  • an ATM interface is assumed as the network side interface.
  • the ATM cells including PCM-encoded telephone traffic are transferred by the interface unit 20 between the PON interface and the network side interface.
  • the LE S—EOC extraction unit 30 extracts cells on the L S—EOC 13 among the cells from the network side interface and transfers them to the monitoring control unit 21 via the ATM switch 3 1.
  • the supervisory control unit 21 performs AAL 2 termination processing, assembles an SNMP message, and causes the S NMP agent function unit 32 to perform the S NMP protocol ⁇ i operation.
  • the SNMP agent function unit 3 2 requests the OMC I 1 2 to generate a test start message when starting the test.
  • This message on VCC is processed by OMC I 1 2, and if it is a test start message, OMC I 1 2 requests the test control unit 10 to start the test.
  • the test control unit 10 performs a test for confirming the physical normality of the telephone accommodation port 11.
  • the ONU 1 stores the test result of the test control unit 10 in the management entity (ME) 33.
  • the OMC I 1 2 generates a test result notification message and transmits it to the OLT 2 via the OMC I VCC 16.
  • the start of the test and the result notification are performed using OMC I 1 2. Therefore, in ONU1, there is no need for a device that converts the test start command and test result notification event into an interpretable form.
  • the SSS AR / SS TED hardware that was previously required can be deleted.
  • the extraction process of LES—EOC 13 is also unnecessary.
  • the S NMP agent function unit 32 can be deleted.
  • hardware for AAL 2 CPS and SS SAR.ZS S TED which were previously required for ON U1, and SNMP agent software are required for OLT 2.
  • hardware for extraction of LE S—EOC 13 is also required for OLT 2. However, since the cost of OLT 2 is divided and shared by the subscribers under the PON interface, the cost can be suppressed.
  • a gateway device 3 is provided between the OLT 2 and the telephone exchange.
  • the gateway device 3 accommodates an interface with a telephone exchange and transmits / receives data to / from the OLT 2 using an ATM cell. Even in a PON system having such a gateway device 3, it is possible to start the test and notify the result using OMC I12.
  • FIG. 7 is a block diagram showing the entire PON system according to the second embodiment of the present invention.
  • a plurality of ONUs 1 that accommodate a plurality of subscriber phones 101 are accommodated in the OLT 2 via the duplexer 5.
  • Gateway 3 is connected to the network side of OLT2.
  • Gateway 3 is connected to telephone exchange 4 via V interface 6.
  • FIG. 8 is a block diagram for explaining a port test method of the system according to the second embodiment of the present invention.
  • the test control unit 10 of the ONU 1 checks the physical normality of the telephone accommodation port 11.
  • OMC I 12 is an interface for monitoring and control in ⁇ — ⁇ system, and an ONU management interface termination point specified in I TU— ⁇ Recommendation G. 983.2.
  • OMC I 1 2 of ONU1 and OMC I of OLT 2 are connected by VCC 16 for OMC I. ⁇ V C C 16 for CI transmits the test start command and test result report together with the monitoring control message.
  • the test start command is generated by the telephone exchange and Routed to OL T 2 via control time slot 15 on interface 6.
  • the remote test entity is specified as the management entity to be controlled.
  • the OLT 2 then synchronizes this message with the AAL 5 and notifies the ONU 1 via the OMC I VCC 16 which is a dedicated path.
  • the ONU 1 that has received the test start request message via the VCC 16 for OMC I requests the test control unit 10 to start the test.
  • the test control unit 10 performs a physical normality confirmation test of the telephone accommodation port 11.
  • the ONU 1 reflects the test result on the specified remote test entity and generates an OMC I message (message type 2 Test Res ult). Notify this to OLT 2.
  • OMC I message messages type 2 Test Res ult
  • FIG. 9 is a block diagram showing the internal configuration of the OLT of FIG.
  • the OLT 2 has an interface unit 20 that terminates the network side interface and the PON interface, and a monitoring control unit 21 that performs monitoring control of the OLT 2.
  • the force of dividing the interface unit 20 and the monitoring control unit 21 is not necessarily divided.
  • an ATM interface is assumed as the network side interface.
  • a ⁇ 4 cell including PCM coded telephone traffic is mapped to the time slot of the TDM interface in the interface unit 20 and transferred between the network side interfaces. '
  • Control time slot extraction ⁇
  • the insertion unit 40 extracts the control time slot of the network side interface and transfers it to the monitoring control unit 21.
  • the EOC unit 41 terminates the protocol control (EOC: Embedded Operations Channel) on the control time slot.
  • EOC part 41 Requests the generation of a message to start the test.
  • the OMC I 12 When the OMC I 12 receives the test result notification message from the PON interface, the OMC I 12 requests the EOC unit 41 to generate a test result notification message. The message generated by the EOC unit 41 is transferred to the control time slot of the network side interface.
  • This message on VCC is processed by OMC I 1 2 and in the case of a remote test start message, the test control unit 10 is requested to start the test.
  • the test control unit 10 performs a physical normality confirmation test of the telephone accommodation port 11.
  • the ON U 1 stores the test result of the test control unit 10 in the management entity (ME) 33.
  • the OMC I 12 generates a test result notification message and sends it to the OLT 2 via the VCC 16 for OMC I.
  • the SSAR / 'S STED hardware that was required in the past can be deleted in ONU 1.
  • the AAL2 CPS also eliminates the need for LES-EOC 13 extraction processing.
  • the SNMP agent function unit 32 can be deleted.
  • OLT2 requires hardware for extracting and inserting control time slots, data link termination hardware for the control time slots, and protocol termination software, but OLT 2 costs are under the PON interface. Cost sharing is possible because it is shared by multiple subscribers.
  • FIG. 11 is a block diagram for explaining a port test method of the PON system according to the third embodiment of the present invention.
  • a plurality of ONUs 1 that accommodate a plurality of subscriber telephones 101 are accommodated in the OLT 2 via the duplexer 5.
  • Gateway 3 is connected to the network side of OLT2.
  • Gateway 3 is connected to the telephone exchange;) ⁇ 4 via V interface 6.
  • FIG. 12 is a block diagram showing the internal configuration of the OLT of FIG.
  • the ONU 1 has a telephone accommodating port 11, a test control unit 10, and a simple test MIB 50.
  • the test control unit 10 is a circuit for confirming the physical normality of the telephone accommodating port 11.
  • the simple MIB 50 for testing ONU 1 and the simple MIB control 51 for testing OLT2 are connected by VCC 52, which is a dedicated path.
  • the test simple M ⁇ B 50 is a circuit that receives the test start message from OLT 2 and requests the test control to start the test, and holds the test result.
  • the simple test MIB control 51 is a processing unit for generating a command for accessing the simple test MIB 50 and receiving a test result notification event.
  • test start command is generated by the telephone exchange and transferred to OLT2 via control time slot 15 on V interface 6;
  • OLT 2 when a test start command is received from control time slot 15, the test simple M I ⁇ control 51 replaces it with the test simple M I ⁇ 50 start command. Then, the AAL 2 is selected and the command is sent to the ONU 1 via the predetermined VCC 52.
  • NU 1 receives a remote test start command from the specified V CC 52, it requests the test control unit 10 to start the test from the test simple M I 50.
  • ONU 1 reflects the test result in the simple MI 50 and generates a test result notification event and notifies OLT 2 of this.
  • OLT2 receives the test result notification event, it forwards it to control time slot 15 on V interface 6.
  • FIG. 12 is a block diagram showing the internal configuration of the OLT of FIG.
  • the OLT 2 has an interface unit 20 that terminates the network side interface and the PON interface, and a monitoring control unit 21 that performs monitoring control of the OLT 2.
  • the interface unit 20 and the monitoring control unit 21 are divided, but it is not always necessary to divide them.
  • an ATM interface is assumed as the network side interface.
  • the ATM cell that contains the PCM coded telegram traffic is the interface part. At 20, it is mapped to the time slot of the TDM interface, and the cell is transferred between the network side tough :!
  • the control time slot extraction / insertion unit 40 extracts the control time slot of the network side interface and transfers it to the monitoring control unit 21.
  • the EOC unit 41 terminates the protocol (E0C) on the control time slot.
  • the EOC unit 41 requests the simple MIB access unit 51 to generate a command for starting the test.
  • the simple MIB access part 5'1 generates a test start command, converts it into a cell by AAL 2, and notifies it to the NU1 via the predetermined VCC 52.
  • the VC I value of the specific VCC is 100. .
  • the simple MIB access unit 51 Upon receiving the remote test result notification event from the specific VCC 52 on the PON interface, the simple MIB access unit 51 requests the EOC unit 41 to generate a message for the test result notification. The message generated by the EOC unit 41 is transferred to the control time slot of the network side interface.
  • This VCC command is processed by the simple test MIB 50, and if it is a test start command, the test control unit 10 is requested to start the test.
  • the test result of the test control unit 10 is stored in the simple test MIB 50, and a test result notification event is generated and transmitted to the OLT 2 via the predetermined VCC52.
  • the hardware of SS SAR / S STED which was necessary in the past, can be deleted in ONU 1.
  • AAL 2 CPS also eliminates the need for LES—EOC 13 extraction.
  • the SNMP agent function unit 32 can be deleted.
  • the hardware for the test simple MIB is added, but this is a very small circuit.
  • OLT2 the hardware for extracting / inserting control time slots and the data link end hard drive for control time slots Protocol termination software is required.
  • the software required for simple MIB access and the hardware required for AAL 2 CPS hardware S and OLT costs are shared and shared by subscribers under the PON interface, enabling cost reduction. .
  • the above-described embodiment uses the B-PON system.
  • the present invention is not limited to the B-PON system, but the GE-PON (gigabit Ethernet-PON) or ATM-PON system.
  • a PON system such as (Asynchronous TransferMode-PON) may be used, and can be applied to a wide range of PON systems.
  • ATM cells are used as the transmission method.
  • Ethernet registered trademark
  • data transmission / reception is widely performed by frames. Whatever you do. Industrial applicability
  • the telephone accommodation port remote test method and the PON system of the PON system according to the present invention are useful for the PON system accommodating the telephone service, and in particular based on a command from the telephone exchange.
  • This test is useful when applied to a PON system that must test the normality of telephone accommodation ports and reduce the cost of terminating equipment on the subscriber side.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

Système PON fournissant un service téléphonique. Selon l'invention, un appareil d'abonné (1) acceptant un ou plusieurs terminaux téléphoniques d'abonnés est connecté par l'intermédiaire d'un moyen de transmission à un appareil de station (2) acceptant un ou plusieurs appareils d'abonné (1) et connecté à un central téléphonique. Les réceptions/émissions de données sont réalisées par trames. Lorsqu'un test de normalité d'un port acceptant un téléphone d'un appareil d'abonné (1) est effectué en réaction à une commande d'un central téléphonique, une OMCI (12), qui est une interface de surveillance/contrôle sur une interface PON, est employée pour commander un début de test et envoyer un rapport de résultat de test. De cette manière, l'appareil d'abonné (1) ne requiert aucun dispositif pour transformer la commande de début de test et le rapport de résultat de test sous des formes interprétables. Autrement dit, le matériel de SSSAR/SSTED requis traditionnellement peut être supprimé, avec, pour résultat, une réduction de coût.
PCT/JP2004/009361 2004-06-25 2004-06-25 Telephone a systeme pon acceptant une methode de test de port et systeme pon WO2006001073A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102752460A (zh) * 2011-04-22 2012-10-24 中兴通讯股份有限公司 仿真通话的方法、网元以及仿真通话的系统
CN109981496A (zh) * 2019-03-27 2019-07-05 烽火通信科技股份有限公司 用于xgpon olt的omci组帧装置及组帧方法

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JP2000188603A (ja) * 1998-12-21 2000-07-04 Nec Eng Ltd 帯域共用制御方式
JP2002247115A (ja) * 2001-02-16 2002-08-30 Nec Corp ポイント・マルチポイント構成によるＶｏＩＰを用いた伝送方式

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SAITO K. ET AL: "BPON no ONT ni okeru Ethernet line card Shikenho", 2001 NEN THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS TSUSHIN SOCIETY TAIKAI KOEN RONBUNSHU 2,, September 2001 (2001-09-01), pages 312, XP002995689 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102752460A (zh) * 2011-04-22 2012-10-24 中兴通讯股份有限公司 仿真通话的方法、网元以及仿真通话的系统
CN109981496A (zh) * 2019-03-27 2019-07-05 烽火通信科技股份有限公司 用于xgpon olt的omci组帧装置及组帧方法

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