2.7.1.7 ipclk1000 product description.pdf

IPCLK1000 Product Description

Issue V2.0

Date 2010-04-30

HUAWEI TECHNOLOGIES CO., LTD.


Issue V2.0 (2010-04-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base, Bantian, Longgang, Shenzhen Code: 518129

Website: http://www.huawei.com

Hotline: 0755-28560000 4008302118

Fax: 0755-28560111

Email: [email protected]

Copyright © Huawei Technologies Co., Ltd. 2010. All Rights Reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

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and other trademarks and trade names mentioned in this document are the property of their respective holders.

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The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, expressed or implied.

http://www.huawei.com

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Contents

1 Introduction.................................................................................................................................... 5 1.1 Positioning ................................................................................................................................................... 5 1.2 Benefits ........................................................................................................................................................ 6

2 Architecture .................................................................................................................................... 8 2.1 General ......................................................................................................................................................... 8 2.2 Physical Structure ......................................................................................................................................... 8

2.2.1 Appearance .......................................................................................................................................... 8 2.2.2 Components ........................................................................................................................................ 9

2.3 Logical Structure .......................................................................................................................................... 9 2.3.1 Satellite Signal Processing Module ...................................................................................................... 9 2.3.2 Control and Communication Processing Module ................................................................................. 9 2.3.3 Clock Source Selecting, Phase Detection, and Clock Generating Module .......................................... 10 2.3.4 Synchronization Clock Packets Generating/Receiving Module .......................................................... 10

2.4 Software Structure ...................................................................................................................................... 10

3 Configurations ............................................................................................................................. 12 3.1 General ....................................................................................................................................................... 12 3.2 Hardware Reliability .................................................................................................................................. 12 3.3 Software Reliability .................................................................................................................................... 12

3.3.1 Scheduled Detection on the Crucial Resources .................................................................................. 13 3.3.2 Check on Parameters ......................................................................................................................... 13 3.3.3 Software Protection Against Faults .................................................................................................... 13

4 Operation and Maintenance ..................................................................................................... 14 4.1 O&M System ............................................................................................................................................. 14 4.2 O&M Functions ......................................................................................................................................... 15

4.2.1 Security Management ........................................................................................................................ 15 4.2.2 Configuration Management ............................................................................................................... 15 4.2.3 Software Management ....................................................................................................................... 16 4.2.4 Alarm Management ........................................................................................................................... 16 4.2.5 Log Management ............................................................................................................................... 16

5 Technical Specifications ............................................................................................................ 17 5.1 Performance Specifications ........................................................................................................................ 17



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5.2 Port Specifications ...................................................................................................................................... 17 5.3 QoS Specifications for the IP Network ....................................................................................................... 18 5.4 Reliability Specifications ............................................................................................................................ 19 5.5 Structure Specifications .............................................................................................................................. 19 5.6 Electrical Specifications ............................................................................................................................. 19 5.7 EMC .......................................................................................................................................................... 20 5.8 Acoustic Noise Specifications ..................................................................................................................... 20 5.9 Safety Specifications .................................................................................................................................. 20 5.10 Surge Protection Specifications ................................................................................................................ 20 5.11 Environmental Legislation Specifications ................................................................................................. 21 5.12 CE Certification Standards ....................................................................................................................... 21 5.13 Environmental Protection Specifications .................................................................................................. 21 5.14 Environment Requirements ...................................................................................................................... 21

Acronyms and Abbreviations ...................................................................................................... 23



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1 Introduction

1.1 Positioning This document is provided for IPCLK1000 V100R002. IPCLK1000 V100R002 supports the IEEE1588 v2 protocol.

The IPCLK1000 developed by Huawei uses the Clock over IP technology to provide a low-cost IP clock solution. It is mainly applied to the IP transport in WCDMA, GSM network that the base stations do not require strict time synchronization.

The Clock over IP technology can be implemented by its server and client. When it is implemented on the server, the server, after local phase locking and holding, sends synchronous reference clock to the client through IP packets. When it is implemented on the client, the client obtains IP packets from the IP network, and thus recovering clock source.

The IPCLK1000 is applicable to a WCDMA or GSM network. The introduction of the IPCLK1000 does not affect the architecture of the network. The document takes the application of the IPCLK1000 in a WCDMA network as an example, as shown in Figure 1-1Position of the IPCLK1000 in the WCDMA network.



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Figure 1-1 Position of the IPCLK1000 in the WCDMA network

As shown in Figure 1-1, in an IP-based WCDMA network, the IPCLK1000 can provide IP clock packets for the NodeB. The NodeB receives the IP clock packets from the IPCLK1000 through the IP network and restores the required clock signals.

To provide IP clock packets for the NodeB, the IPCLK1000 can be installed in a cabinet of the Radio Network Controller (RNC) or in any other cabinet that can accommodate the IPCLK1000.

1.2 Benefits

Great Network Adaptability The IPCLK1000 has low requirements for the Quality of Service (QoS) performance of IP networks. Therefore, the IPCLK1000 has no additional requirements for topologies or for Qos performance of networks.

High Integration and Large Capacity As a cassette-shaped clock server, the IPCLK1000 is highly integrated and has a large capacity. One IPCLK1000 supports a maximum of 512 NodeBs.

Support for Diverse Clock Sources The IPCLK1000 provides access for multiple clock sources. The system clock can be chosen in a convenient and flexible manner.

The IPCLK1000 supports the following types of clock sources:

l Building integrated timing supply system (BITS) clock



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l External 8 kHz clock, which is a standard 8 kHz clock provided by an external device l Global Positioning System (GPS) /Global Navigation Satellite System (GLONASS)

clock

The IPCLK1000 can obtain clock signals either through the built-in satellite card or from an external satellite card through the clock signal input ports on the panel.

Flexible Application The IPCLK1000 can serve either as a server or as a client.

If a NodeB in an IP network fails to act as the client in the Clock over IP technology, an IPCLK1000 can be configured to be the client on the NodeB side to provide clock signals for the NodeB.

When the IPCLK1000 serves as the client, it extracts clock packets from the IP network and exports 2 MHz or 10 MHz clock signals for the NodeB.

Small Size, Easy Installation, and High Environment Adaptability The IPCLK1000, a case with 19 inches in width and 1 U in height, occupies only little space.

The IPCLK1000 can be installed alone. It can also be installed in an RNC cabinet or any other cabinet that is 300 mm in depth.

The IPCLK1000 supports 110 V AC, 220 V AC, or -48 V DC power supplies.

Convenient Maintenance Based on Front Access The service optical cables and other cables are routed from the front panel of the IPCLK1000. The cables of the power supply device are also routed from the front panel.

With cabling from the front panel, the maintenance can be performed in the front. In addition, the IPCLK1000 can be installed against the wall, thus facilitating installation in a narrow equipment room.

Easy OM by Supporting Local and Remote Maintenance The IPCLK1000 is featured by easy OM through the IP network. In the IEEE1588V2 protocol, Security Socket Layer (SSL) is applied between the LMT or M2000 and the IPCLK server.

l Local and remote maintenance on a single IPCLK1000 on the LMT l Centralized remote maintenance on multiple IPCLK1000s on the M2000

High Reliability by Supporting Distributed Redundancy The IPCLK1000 supports distributed redundancy, thus ensuring the reliability of the clock signals across the network.

For details about the redundancy mode, refer to section 4.2 “Hardware Reliability”.



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2 Architecture

2.1 General The IPCLK1000 is an independent device with a case. The determination of the quantity of IPCLK1000s in actual networking is dependent on the number of clients and the redundancy between the IPCLK1000s.

This chapter introduces the system architecture of the IPCLK1000 in the following aspects:

l Physical Structure l Logical Structure l Software Structure

2.2 Physical Structure 2.2.1 Appearance

The IPCLK1000 uses the standard 1 U case of Huawei. The design complies with the IEC60297 standard. Figure 2-1 shows the IPCLK1000.

Figure 2-1 IPCLK1000

The dimensions of the IPCLK1000 are 436 mm (width) x 240 mm (depth) x 43.6 mm (height).



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2.2.2 Components The IPCLK1000 consists of the clock board PCKS, built-in satellite card (optional), power transfer board WPTB, power supply module, and fans.

2.3 Logical Structure

2.3.1 Satellite Signal Processing Module This module processes GPS and GLONASS signals.

The IPCLK1000 can be embedded with a satellite card. The satellite card can be one of the following types:

l M12+ l Resolution T l GPS15L l K161

The satellite card is installed on the PCKS. One PCKS can be installed with only one satellite card at a time.

Figure 2-2 shows the communication between the satellite card and the PCKS.

Figure 2-2 Processing the signals from the satellite card

The PCKS performs logical check on the 1 Pulse Per Second (PPS) signals exported by the satellite card and recognizes the type of the satellite card in use. Then, the PCKS configures appropriate Central Processing Unit (CPU) serial ports for communication with the satellite card.

The IPCLK1000 chooses a clock input from two types of clock signals: those received at the input port on the panel and those exported by the satellite card. At a time, however, only one type of clock signal can serve as the clock source.

2.3.2 Control and Communication Processing Module This module is the control and communication processing core of the IPCLK1000. This module has the following functions:

l Processing signaling between the server and the client



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l Querying the maintenance and obtaining the information of synchronization links l Managing the satellite signal processing module l Enabling the IPCLK1000 to communicate with the LMT or M2000 l Maintaining the module that selects a clock source and performs phase discrimination l Measuring the data on and maintaining synchronization clock packets generating or

receiving module

2.3.3 Clock Source Selecting, Phase Detection, and Clock Generating Module

This module selects a clock source, performs phase detection, and generates a system reference clock.

This module performs the following operations:

1. The clock source selecting part selects a clock source, converts the clock signals to 1 PPS signals, and then sends the 1 PPS signals to the phase detecting part.

2. The phase detecting part performs phase detection and then sends the phase value to the CPU.

3. The CPU performs software filtering and the clock generating part of this module generates a local reference clock.

4. Based on the clock source and the local clock, the clock generating part performs corresponding phase-lock state transition and generates relevant information about alarms and maintenance.

2.3.4 Synchronization Clock Packets Generating/Receiving Module

This module generates or receives synchronization clock packets and is applicable to different configuration scenarios.

The IPCLK1000 can serve as either a clock server or a clock client.

l When acting as a clock server, the IPCLK1000 generates synchronization clock packets and provides them to base stations through the IP network.

l When acting as a clock client, the IPCLK1000 receives the synchronization clock packets transmitted across the IP network and restores the clock signals. The signals are used by the base station that fails to act as a clock client.

2.4 Software Structure The host software of the IPCLK1000 consists of platform software, data center, and application software. Figure 2-3 shows the software structure.



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Figure 2-3 Structure of the host software

Application software

Platform software

Data center



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3 Configurations

3.1 General The IPCLK1000 is independent box-shaped equipment. The quantity of IPCLK1000s in actual networking is dependent on the number of clock clients and the redundancy between the IPCLK1000s.

The following sections describe the IPCLK1000 hardware reliability and software reliability.

3.2 Hardware Reliability Every component of the IPCLK1000 passes the aging test and strict selection. Stringent controls on quality are applied to the process of hardware designing and assembly, thus ensuring high stability and reliability of hardware in long-term operation.

The hardware of the IPCLK1000 is based on the redundancy and derating design. Redundancy is applied to key modules and links, and derating is applied to all components.

The IPCLK1000 also supports distributed redundancy to ensure reliable running.

In distributed redundancy mode, associated data configuration is performed on clock clients. The result is that all the IPCLK1000s in a network are configured for redundancy and work as a resource pool. Every client is equipped with a list of addresses for all the IPCLK1000s in the network. If the IPCLK1000 that provides clock signals for a client fails, the client automatically searches the address list for another IPCLK1000. The distributed redundancy enables the resources to be shared among the entire network.

3.3 Software Reliability The error tolerance capability of the software indicates software reliability. In other words, the IPCLK1000 can recover from software failure quickly by reset of the watchdog. This indicates that the IPCLK1000 has self-healing capability.



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3.3.1 Scheduled Detection on the Crucial Resources The IPCLK1000 performs occupancy check on software resources. If resource hang-up occurs due to software faults, the IPCLK1000 can release the unavailable resources in time and export logs and alarms.

3.3.2 Check on Parameters Validity checks are performed on all the parameters of the configuration commands. Validity checks are also performed on the data in configuration files when the IPCLK1000 starts up. In this way, the IPCLK1000 runs properly.

3.3.3 Software Protection Against Faults The IPCLK1000 can store two versions of software. If a failure occurs in software upgrade, you can roll back the software to the original version, thus ensuring stable running of the IPCLK1000.



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4 Operation and Maintenance

4.1 O&M System The O&M system of the IPCLK1000 uses a customized man-machine interface based on the Man-Machine Language (MML) and Graphical User Interface (GUI).

Figure 4-1 shows the O&M system of the IPCLK1000.

Figure 4-1 O&M system of the IPCLK1000

LMT

VLAN

iManager M2000

LMT

LMT

IPCLK1000

IPCLK1000

VLAN: Virtual Local Area Network LMT: Local Maintenance Terminal iManager M2000: Huawei Mobile Element Management System

The O&M system of the IPCLK1000 provides the following two consoles:

l LMT



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The LMT is applicable to local and remote maintenance. It is used to maintain a single IPCLK1000 from aspects such as software upgrade, data loading, alarm data collection, and equipment maintenance.

l M2000 The M2000 is applicable to remote maintenance. It is used to maintain multiple IPCLK1000s on the network level from aspects such as software upgrade, data loading, alarm data collection, and equipment maintenance.

l Local maintenance refers to the OM process during which the maintenance personnel log in to the

IPCLK1000 by directly connecting an LMT to the local Ethernet port on the IPCLK1000. l Remote maintenance refers to the OM process where the maintenance personnel in an equipment

room or at a network maintenance center configure IP routes on the LMT or M2000 to log in to the IPCLK1000 remotely.

4.2 O&M Functions The O&M system of the IPCLK1000 takes into consideration customers` requirements on the running and maintenance of the equipment. The main functions provided by the O&M system are as follows:

l Security Management l Configuration Management l Software Management l Alarm Management l Log Management

4.2.1 Security Management The IPCLK1000 provides the following functions for security management:

l Setting of hierarchical operator rights

The IPCLK1000 controls the operation rights by dividing the rights into several levels. Thus, the equipment is protected against network attack and can run smoothly.

l Operator information protection

If no operation is performed during a certain period, the user interface is automatically locked.

l SSL security management mechanism

The data between the IPCLK1000 and the LMT or M2000 is encrypted on encrypted transmission channels.

4.2.2 Configuration Management Configuration management is mainly applied to equipment maintenance and data configuration.

For configuration management, the IPCLK1000 performs consistency check on configuration data. Two data configuration modes are available: dynamic data configuration and static data configuration.



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l In dynamic data configuration mode, the modified data takes effect immediately. l In static data configuration mode, the modified data takes effect only after the

IPCLK1000 is reset.

4.2.3 Software Management Software management involves software version management and software upgrade.

4.2.4 Alarm Management The alarm management system of the IPCLK1000 detects and reports fault information in real time. The LMT or M2000 then displays the alarm information and provides appropriate handling suggestions.

The alarm management system of the LMT or M2000 is connected to an alarm box through a serial port. It provides audio and visual indication of alarms generated by the alarm box. Subscribers can subscribe to specific alarm information. When related alarms are generated, the alarm information is forwarded to the handsets or pagers of maintenance personnel so that the personnel can handle the faults in time.

4.2.5 Log Management The IPCLK1000 records the information about operations in real time and saves the records as operation logs to facilitate fault identification and troubleshooting.



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5 Technical Specifications

5.1 Performance Specifications Table 5-1 describes the performance specifications for the IPCLK1000.

Table 5-1 Performance specifications

Specification Value

Maximum number of clients supported

512 NodeBs

Maximum frequency of packet transmission

32pps (packet per second)

Maximum bandwidth of each signal

Normal value: 20kbit/s Maximum value: 40kbit/s

Output clock precision of the client

When the server is directly connected to the client: 10 ppb (parts per billion)

When the server is not directly connected to the client: 50 ppb (parts per billion)

Clock hold duration after the loss of clock source

Seven days

5.2 Port Specifications Table 5-2 describes the port specifications for the IPCLK1000.



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Table 5-2 Port specifications

Port Standard Connector Type

Remarks

Gigabit Ethernet (GE) optical port for services

IEEE 802.3 SFP Used to send IP clock packets

Fast Ethernet (FE) port for services

IEEE 802.3 RJ45 Used to send IP clock packets

FE ports for OM IEEE 802.3 RJ45 Ports connecting to the LMT or M2000

Antenna port

- SMA Antenna port for the built-in satellite card

1 PPS and 8 kHz clock signal input ports

RS422 RJ48 Two ports for input of clock signals from an external satellite card or a 8 kHz clock

E1/T1 clock signal input ports

ITU-T G.703/G.704

RJ48 Two ports working in balanced mode for input of 2 MHz, 2 Mbit/s, 1.5 MHz, and 1.5 Mbit/s clock signals

2 MHz and 1.5 MHz clock signal input ports

ITU-T G.703/G.704

SMB Two ports working in unbalanced mode

2 Mbit/s and 1.5 Mbit/s clock signal input ports

ITU-T G.703/G.704

SMB Two ports working in unbalanced mode

2 MHz and 10 MHz clock signal output ports

ITU-T G.703/G.704

SMB Used to export the clock reference signals when the IPCLK1000 acts as the client

The GE optical ports and the FE port for services cannot be used at the same time. The IPCLK1000 can only use one of the two types to send IP packets at a time.

5.3 QoS Specifications for the IP Network Table 5-3 describes the specifications for the IP network where the IPCLK1000 is located.

Table 5-3 QoS specifications for the IP network

Specification Value Delay < 20 ms



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Packet loss rate < 1%

5.4 Reliability Specifications Table 5-4 describes the reliability specifications for the IPCLK1000.

Table 5-4 Reliability specifications

Specification Value

System availability

≥ 99.999%

MTBF (Mean Time Between Failures) ≥ 355,000 h

MTTR (Mean Time To Repair) ≤ 1 h

5.5 Structure Specifications Table 5-5 describes the structure specifications for the IPCLK1000.

Table 5-5 Structure specifications

Specification Value

Structure standard The structure design conforms to the IEC 297, IEC 529, and GB 3047.4.86 standards.

Dimensions 436 mm (width) x 240 mm (depth) x 43.6 mm (height)

Weight ≤ 5 kg

5.6 Electrical Specifications Table 5-6 describes the electrical specifications for the IPCLK1000.



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Table 5-6 Table 6-6 Electrical specifications

Specification Value

Power specifications Support the following two power inputs: l –48 V DC power; input voltage range: –36 V DC to –75 V DC l 110 V/220 V AC 50/60 Hz; input voltage range: 90 V AC to 264

V AC

Power Consumption < 50 W

Heat consumption < 40 W

5.7 EMC The IPCLK1000 meets the Electro Magnetic Compatibility (EMC) in the following standards:

l GB 9254 l TS 25.113 l 89/336/EEC EMC directive l EN 55022 l ETSI EN300 386 l CISPR 22 l ITU-T Recommendation K.20

5.8 Acoustic Noise Specifications The IPCLK1000 meets the acoustic noise specifications in the EUROPEAN ETS 300 753 standard.

5.9 Safety Specifications The IPCLK1000 meets the safety specifications in the following standards:

l GB4943 l IEC60950 l CAN/CSA-C22.2 No 950-95 l UL 1950

5.10 Surge Protection Specifications The IPCLK1000 meets the surge protection specifications in the following standards:

l YD 5068-2005



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l IEC 61312-1 l IEC 61643-1 l ITU-T K.11 l ITU-T K.27 l ETS 300 253

5.11 Environmental Legislation Specifications The IPCLK1000 meets the environmental legislation specifications in the following standards:

l IEC60950 l GB 4943 l GR-63-CORE

5.12 CE Certification Standards The IPCLK1000 meets CE certification requirements in the following standards:

l 73/23/EEC LVD l 93/68/EEC l 89/336/EEC l IEC60950-1 l IEC60950-21 l IEC60825-1/2

5.13 Environmental Protection Specifications The IPCLK1000 meets the environmental protection specifications in the following standards:

l RoHS: Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment

l WEEE: The EU Directive on Waste of Electrical and Electronic Equipment

5.14 Environment Requirements The storage, transportation, and working environment of the IPCLK1000 conform to the following standards:

l EUROPEAN ETS 300 019-1-1 l EUROPEAN ETS 300 019-1-2 l EUROPEAN ETS 300 019-1-3-Amd l YD5083



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Table 5-7 describes the working environment specifications for the IPCLK1000.

Table 5-7 Working environment specifications

Temperature (°C) Relative Humidity (%)

Short-term working condition

Long-term working condition

Short-term working condition

Long-term working condition

-5°C to + 55°C 0°C to 45°C 95% RH 5% to 85% RH



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Acronyms and Abbreviations

A

AC Alternating Current

B

BITS Building Integrated Timing Supply System

BRAS Broadband Remote Access Server

BTS Base Transceiver Station

C

CPU Central Processing Unit

D

DC Direct Current

DSLAM Digital Subscriber Line Access Multiplexer

E

EMC Electromagnetic Compatibility

F

FE Fast Ethernet

G

GE Gigabit Ethernet

GLONASS Global Navigation Satellite System

GPS Global Positioning System



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GSM Global System for Mobile communications

GUI Graphic User Interface

I

IP Internet Protocol

L

LMT Local Maintenance Terminal

M

MML Man Machine Language

MTBF Mean Time Between Failures

MTTR Mean Time To Repair

N

NEBS Network Equipment Building System

p

PPS Pulse Per Second

PPB Parts Per Billion

Q

QoS Quality of Service

R

RNC Radio Network Controller

U

UMTS Universal Mobile Telecommunications System

V

VLAN Virtual Local Area Network



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W

WCDMA Wideband Code Division Multiple Access

2.7.1.7 ipclk1000 product description.pdf

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