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Sagem 4450E 12.2.Commissioning and Maintenance of the VDSL Subscriber Line, 12.2.1.VDSL Technical Parameters

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SAGEM 3P@C

12.2.Commissioning and Maintenance of the VDSL Subscriber Line

12.2.1.VDSL Technical Parameters

1.1.1.66VDSL Signal Frequency Range

The VDSL access equipment of Harbor uses the VDSL system based on the IP transmission mode, and the modulation mode is QAM, and the used signal frequency range is shown in the figure below:

Figure 12-5 VDSL frequency range

DownstreamUpstream

		The spectrum of VDSL, POTS, ISDN, HDSL, SDSL, and ADSL is
		not cross-connected. The VDSL service can co-exist with ADSL in
		the same wire bundle.
	prompt	the same wire bundle.
	prompt

1.1.1.67Key Technical Parameters for VDSL (Terminal resistance, PSD, SNR)

On the full band of VDSL, the output resistance of the equipment is 100Ω, and this resistance can be matched with different types of non-shielded twisted pairs of most access networks.

The downstream and upstream signal powers are 10dBm(10mW).

The total maximum transmission power as required by the national standard does not exceeds 14.5dBm.

PSD (Power Spectral Density): When the frequency is any value between 25kHz and 12MHz, the transmission power spectrum density value of the upstream signals cannot exceed - 53dBm/Hz; the transmission power spectrum density value cannot exceed -60dBm/Hz when the downstream signal is between 138kHz-3.75MHz; the transmission power spectrum density value cannot exceed -53dBm/Hz -60dBm/Hz when the downstream signal is between 8.5MHz- 12MHz.

SNR (Signal Noise Ratio, that is, the ratio between signal power in the channel and the noise power): the SNR value reflects the quality of the VDSL signal transmission on the line.

1.1.1.68Factors Affecting the VDSL Transmission Quality

The following factors can affect the transmission quality of the VDSL service:

Line length

3P@C Installation Manual

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Contents

Next Generation DSLAM HARDWARE INSTALLATION MANUAL Page WARNING RECORD OF AMENDMENTS FOREWORD Page Page Page Page Page Page Page Page Page Target Readers Contents Part I Hardware Installation Part II Maintenance Appendix Common Troubleshooting & Relevant Knowledge Conventions Technical Support Hardware Installation 1.1. System Overview NG-DSLAM Management Scalable range Page 1.2. Representative Networking Applications 1.3. System Composition 1.4. Hardware Features Page 2.1. Shelf Configuration 2.1.1. Structure of the General Chassis Page 2.1.2.10U Chassis 2.1.3.Fan Module 2.1.4.Air Deflector Frame Page 2.2.Full Configuration of the Cabinet 2.3.SMUB and Service Boards 2.3.1.Service Processor Unit Board (SMUB) Page Page 2.3.2.VDSL Unit Board (VDUB) 2.3.3.ADSL Unit Board (ADUB) Page 2.3.4.ADSL Unit Card (ADUC) 2.4.Power Distribution System 2.4.1.Overview 2.4.2.Functional Features 2.5.Optional Uplink Interface Modules 2.5.1.1-portGigabit Long-waveOptical Interface Module (DS-1GLX) Page 2.5.2.1-portGigabit Short-waveOptical Interface Module (DS-1GSX) 2.5.3.2-port100M Multi-modeOptical Interface Module (DS-2FMM) 2.5.4.2-port100M Single-modeOptical Interface Module (DS-2FSM) Page 2.5.5.4-port100M Electrical Interface Module (DS-4TXB) 2.5.6. VAS Card (DS-4ITX) 2.6.Route Transfer Unit (RTU) Page 3.1.Environmental Requirements 3.1.1.Temperature and Humidity Requirements 3.1.2.Cleanness Requirements 3.1.3.Floor Requirements 3.1.4. Heat Dissipation Requirements 3.1.5.Power Supply Requirements 3.1.6.Grounding Requirements Page 3.1.7.Anti-interferenceRequirements 3.1.8.Other Requirements 3.2.Safety Requirements 3.2.1.Basic Safety Requirements 3.2.2.Antistatic Requirements 3.2.3.Avoiding Laser Damage 3.2.4.Lightning Protection Requirements 3.2.5.Anti-seismicDesign Requirements 3.2.6.Fireproof Design Requirements 3.2.7.Precautions for Equipment Handling 3.3.Installation Tools and Materials 3.4.Product Configuration List 3.4.1.Basic Configuration of the Product 3.4.2.Optional Components 3.5. Unpacking for Acceptance 3.5.1.Preparation 3.5.2.Unpacking Page Page Page 3.5.3.Goods Acceptance 4.1.Cabinet Installation 4.1.1.Installation on the Cement Floor Page Page Page Page Page 4.1.2.Installation on the Antistatic Floor Page Page Page Page Page 4.1.3.Installing the Cabinet Guide Rails 4.2.Installing the Equipment 4.2.1.Installing the 10U Chassis 4.2.2.Installing the Fan Module Page Page 4.2.3. Installing the Air Deflector Frame Page 4.3.Connecting the Power and Grounding Cables 4.3.1.Connecting the Power Cables of the Equipment 4.3.2.Connecting the Power Cable of the Fans 4.3.3.Connecting the Grounding Cables 4.3.4.Equipment Power Supply Test 4.4.Installing the Service Processor Unit Board (SMUB) 4.4.1.Installing the Uplink Interface Modules Page 4.4.2.Installing the RTU Page 4.4.3.Installing the SMUB 4.4.4.Connecting the Ethernet Interfaces of SMUB Page 4.4.5. Connecting the Optical Interfaces of SMUB 4.5.Installing the Subscriber Service Cards 4.6.Installing the Dummy Panels 4.7.Connecting the Subscriber Cables Page Page Page Page 4.8.Connecting the Console Cable Page Page Page 5.1. Requirements for Cable Types 5.2. Requirements for Cabling Length 5.3. Spacing Requirements for Indoor Cabling Page 5.4. Several Forbidden Overhead Cabling Methods 5.5. Other Requirements for Outdoor Cabling 5.6. Installing External Lightning Arrester Page Page 6.1.Equipment Power-on 6.2.Setting Up the Configuration Environment 6.2.1.Local Configuration via the Console Interface Page 6.2.2.Remote Configuration via Telnet 6.3.Command Line System 6.3.1.Command Mode 6.3.2.Common Commands 6.3.3.Online Help of Command Line 6.3.4.Command Line Edit Feature 6.4.System Management 6.4.1.Storage Media and File Type 6.4.2.Program File Management 6.4.3.Configuration File Management Maintenance 7.1.System Upgrade 7.1.1. Storage Media and File Type 7.1.2. Sequence of System Upgrade 7.1.3.Upgrading the System File Page Page Page Page Page Page Page Page 7.1.4. Upgrading the Master System Control Board Page 7.1.5.Upgrading the Standby System Control Board 7.2.Managing the Configuration File 7.2.1.Type and Format of Configuration File 7.2.2.Backuping the Configuration File 7.2.3.Loading the Configuration File 7.2.4.Erasing the Configuration File 7.3.Querying the Maintenance Information 7.3.1. Querying the Current Software Version 7.3.2.Viewing the Current Configuration 7.3.3.Querying the Port Status 7.3.4.Querying the VLAN Status 7.3.5.Viewing FIB Table 7.3.6.Viewing the ARP Table 7.3.7.Viewing the Route Information 7.3.8. Querying the System Running Time 7.4. Handling Password Loss Page Page 8.1. Checking the Optical Interface 8.2.Checking the Status of the User Port 8.2.1.Querying the ADSL Port Status Page Page 8.2.2.Querying the VDSL Port Status Page 9.1. Maintenance for System Control Board 9.1.1. Check 9.1.2. Hot Plugging 9.1.3. Master/Standby Switchover Page 9.1.4. Reset 9.1.5. Replacing System Control Board Page 9.2. Maintenance for Service Board 9.2.1. Check 9.2.2. Hot Plugging 9.2.3. Reset 9.2.4. Replacing Service Board Page Page 10.1.Checking Air-breakSwitch Page 11.1.Maintenance for Air Filter 11.1.1.Checking Air Filter 11.1.2.Cleaning and Replacing Air Filter 11.2. Maintenance for Fan Shelf 11.2.1.Checking Fan Shelf 11.2.2.Replacing Fan Shelf Page Page 12.1.Commissioning and Maintenance of ADSL Subscriber Line 12.1.1.ADSL Technical Parameters Page Page Page 12.1.2.ADSL Line Commissioning Page Page Page Page Page Page 12.1.3.ADSL Line Maintenance Page Page Page Page 12.2.Commissioning and Maintenance of the VDSL Subscriber Line 12.2.1.VDSL Technical Parameters Page 12.2.2.VDSL Line Commissioning Page Page 12.2.3.VDSL Line Maintenance Page Page Page Page 13.1.Problem Location & Information Collection 13.1.1.General Check 13.1.2.Layer-2Check 13.1.3.Layer-3Check 13.1.4.Service Check 13.2.Unstable Service due to Wrong Making of Network Cables 13.2.1.Common Causes 13.2.2.Processing Procedure 13.2.3.Typical Cases Page Page Page 14.1.Use of AC/DC Converter Page Common Troubleshooting & Relevant Knowledge A.Diagnosis of Common Faults B.Glossary