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Huawei EchoLife OT925-G User Manual

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EchoLife OT925-G
User Guide
EchoLife OT925-G
V100R002
User Guide
Issue
02
Date
2007-08-30
Part Number
31017513
Issue 02 (2007-08-30)
Huawei Technologies Proprietary
Contents
i

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Summary of Contents for Huawei EchoLife OT925-G

  • Page 1 EchoLife OT925-G User Guide Contents EchoLife OT925-G V100R002 User Guide Issue Date 2007-08-30 Part Number 31017513 Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 2 EchoLife OT925-G User Guide Contents Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any assistance, please contact our local office or company headquarters. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129...
  • Page 3 EchoLife OT925-G User Guide Contents Contents About This Document......................1 1 Overview...........................1-1 1.1 System Overview......................1-2 1.2 Outline..........................1-3 2 Hardware Installation ....................2-1 2.1 Packing List........................2-2 2.2 Installation and Maintenance Precautions ................ 2-2 2.3 Installing the OT925-G...................... 2-4 2.3.1 Cabinet Installation ....................2-4 2.3.2 Wall Mounting ......................
  • Page 4 4.4 Configuring User Password .................... 4-21 4.5 Loading Software ......................4-23 4.6 Saving/Rebooting ......................4-24 5 Troubleshooting ......................5-1 5.1 Troubleshooting Common Faults..................5-2 5.2 How to Obtain Technical Support from Huawei ..............5-4 A Acronyms and Abbreviations..................A-1 Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 5 EchoLife OT925-G User Guide Figures Figures Figure 1-1 Typical application of the OT925-G....................1-2 Figure 1-2 Outline of the OT925-G ........................1-3 Figure 2-1 Installing mounting brackets for the OT925-G (cabinet installation) ..........2-4 Figure 2-2 Installing the OT925-G in a cabinet ....................2-5 Figure 2-3 Installing mounting brackets for the OT925-G (wall mounting)............2-6...
  • Page 6 EchoLife OT925-G User Guide Figures Figure 4-12 Update page..........................4-17 Figure 4-13 Restore Default page........................4-18 Figure 4-14 System Log page .........................4-19 Figure 4-15 Password page..........................4-21 Figure 4-16 Update Software page.........................4-23 Figure 4-17 Save/Reboot page........................4-24 Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 7 EchoLife OT925-G User Guide Tables Tables Table 1-1 LEDs of the OT925-G........................1-3 Table 1-2 Ports of the OT925-G.........................1-4 Table 1-3 Buttons of the OT925-G ........................1-5 Table 2-1 Checklist of cable connections......................2-11 Table 2-2 Checklist of the installation environment..................2-12 Table 2-3 LED status............................2-13 Table 3-1 Parameters of the Port page.......................3-5...
  • Page 8 EchoLife OT925-G User Guide Tables Table 5-2 Mapping between LINK, AUTH, and device status ................5-3 Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 9 EchoLife OT925-G User Guide Contents Contents About This Document......................iv Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 10 User Guide Contents About This Document Purpose This document provides guides to use the EchoLife OT925-G (OT925-G for short). This document describes the functions, features, installation methods, configuration, and maintenance of the OT925-G. Related Versions The following table lists the product versions related to this document.
  • Page 11 EchoLife OT925-G User Guide Contents Organisation This document is organized as follows. Chapter… Describes… 1 Overview System features and architecture 2 Hardware Installation Installation process and safety precautions 3 Configuration Guide Basic configurations on the OT925-G 4 Maintenance How to maintain the OT925-G...
  • Page 12 EchoLife OT925-G User Guide Contents General Conventions Convention Description Times New Roman Normal paragraphs are in Times New Roman. Boldface Names of files, directories, folders, and users are in boldface. For example, log in as user root. Italic Book titles are in italics.
  • Page 13 EchoLife OT925-G User Guide Contents Keyboard Operation Format Description Press the key. For example, press Enter and press Tab. Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently. Key 1, Key 2 Press the keys in turn.
  • Page 14 EchoLife OT925-G User Guide Contents Contents 1 Overview........................... xii 1.1 System Overview....................... xiii 1.2 Outline..........................xiv Huawei Technologies Proprietary Issue 02 (2007-08-30) viii...
  • Page 15 EchoLife OT925-G User Guide Figures Figures Figure 1-1 Typical application of the OT925-G....................xiii Figure 1-2 Outline of the OT925-G ........................xiv Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 17 EchoLife OT925-G User Guide Tables Tables Table 1-1 LEDs of the OT925-G........................xiv Table 1-2 Ports of the OT925-G.......................... xv Table 1-3 Buttons of the OT925-G ........................xvi Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 18 EchoLife OT925-G User Guide Tables Overview About This Chapter The following table lists the contents of this chapter. Section Description 1.1 System Overview This section describes the orientation and functions of the OT925-G. 1.2 Outline This section describes the outline of the OT925-G, including the LEDs, ports, and buttons.
  • Page 19 Tables System Overview The EchoLife OT925-G is a single business unit (SBU) for commercial users. It provides Gigabit-capable Passive Optical Network (GPON) access with the upstream rate 1.244 Gbit/s and downstream rate 2.488 Gbit/s to satisfy the requirements on voice, data and video services over a single optical fiber.
  • Page 20 EchoLife OT925-G User Guide Tables Outline This section describes the outline, light-emitting diodes (LEDs), ports, and buttons of the OT925-G. .1 shows the outline of the OT925-G. Outline of the OT925-G LEDs The OT925-G provides various LEDs to indicate the running status, which helps you to locate and troubleshoot device problems.
  • Page 21 EchoLife OT925-G User Guide Tables Color Status Description E1 LED Red/Gree E1 port is idle. Red on E1 channel has raised an E1_LOS alarm. E1 channel has raised a severe alarm, blinking excluding the E1_LOS alarm. Green on E1 channel is busy without any alarm.
  • Page 22 EchoLife OT925-G User Guide Tables Buttons Buttons of the OT925-G Button Quantity Description INIT button You can reset the device by using an insulating tool with a fine end to press the reset button in the INIT port. You can restore the device to the factory defaults by pressing the reset button in the INIT port for 10s.

  • Page 23: Table Of Contents

    EchoLife OT925-G User Guide Contents Contents 2 Hardware Installation ....................xxii 2.1 Packing List........................xxiii 2.2 Installation and Maintenance Precautions ............... xxiii 2.3 Installing the OT925-G...................... xxv 2.3.1 Cabinet Installation ....................xxv 2.3.2 Wall Mounting ......................xxvi 2.4 Installing Cables........................ xxx 2.4.1 Routing Rules ......................
  • Page 25 EchoLife OT925-G User Guide Figures Figures Figure 2-1 Installing mounting brackets for the OT925-G (cabinet installation) ..........xxv Figure 2-2 Installing the OT925-G in a cabinet ....................xxvi Figure 2-3 Installing mounting brackets for the OT925-G (wall mounting)........... xxvii Figure 2-4 Marking two holes on the wall for mounting the OT925-G............xxvii Figure 2-5 Drilling holes..........................xxviii...
  • Page 27 EchoLife OT925-G User Guide Tables Tables Table 2-1 Checklist of cable connections......................xxxii Table 2-2 Checklist of the installation environment..................xxxiii Table 2-3 LED status............................xxxiv Huawei Technologies Proprietary Issue 02 (2007-08-30)

  • Page 28: Hardware Installation

    EchoLife OT925-G User Guide Tables Hardware Installation About This Chapter The following table lists the contents of this chapter. Section Description 2.1 Packing List This section describes how to check the OT925-G components according to the packing list before the installation.

  • Page 29: Packing List

    Packing List Before installing the OT925-G, check its components according to the packing list before the installation. For the packing list, refer to the EchoLife OT925-G Quick Start. Installation and Maintenance Precautions This section describes the precautions for installing and maintaining the OT925-G.
  • Page 30 EchoLife OT925-G User Guide Tables Usage Precautions The voltage of the power supply must meet the input voltage requirement. After the device is powered off, wait at least 10s before next power-on. Before connecting or disconnecting any cables, stop using the device and turn off the power supply.

  • Page 31: Installing The Ot925-G

    EchoLife OT925-G User Guide Tables Installing the OT925-G This section describes how to install the OT925-G. The OT925-G can be placed on the workbench, mounted onto the wall, or installed in the cabinet. Cabinet installation: The OT925-G can be installed in a 19-inch or 21-inch cabinet by adopting different mounting brackets.

  • Page 32: Wall Mounting

    EchoLife OT925-G User Guide Tables Select the position in the cabinet for installing the OT925-G, and then install captive nuts according to the chassis position. Use four panel screws to fasten the OT925-G to the selected position in the cabinet through the mounting brackets, as shown in .2 .
  • Page 33 EchoLife OT925-G User Guide Tables Use 19-inch mounting brackets, as shown in .1 . Installing mounting brackets for the OT925-G (wall mounting) Recommended Tools Measuring and marking tools: measuring tape, ruler (1 m), marker pen, powder marker, pencil Drilling tools: punch tool, percussion drill, matching drill bits, vacuum cleaner Clamping tools: cross screwdriver (M3–M6)
  • Page 34 EchoLife OT925-G User Guide Tables Drilling holes Insert two expansion bolts vertically to the holes, and knock them into the holes with the rubber hammer, as shown in .4 . Installing expansion bolts Face the cable connecting side of the device downward. Align two holes on the upper parts of two mounting brackets to the expansion bolts in the wall.
  • Page 35 EchoLife OT925-G User Guide Tables Installing the flat washer, spring washer, and nut ----End Huawei Technologies Proprietary Issue 02 (2007-08-30) xxix...

  • Page 36: Installing Cables

    EchoLife OT925-G User Guide Tables Installing Cables This section describes the routing rules and installation procedures of cables. 2.4.1 Routing Rules This section describes the routing rules of cables. Bundling Cables Comply with the following rules when bundling cables: Bundle power cables and signal cables separately.

  • Page 37: Connecting Cables

    EchoLife OT925-G User Guide Tables 2.4.2 Connecting Cables This section describes how to connect various cables. Recommended Tools Small tools: diagonal pliers, pincer pliers Clamping tools: cross screwdriver (M3–M6) Connecting Ground Cables To protect the OT925-G against lightning and interference, the ground cables must be connected correctly.

  • Page 38: Checking The Installation

    EchoLife OT925-G User Guide Tables Connecting E1 Cables Connect E1 cables through the E1 port. Select the 75-ohm coaxial cable or 120-ohm twisted pairs with the RJ-45 connector. Connect one end of the E1 cable to the E1 port of the OT925-G.

  • Page 39: Power-On Check

    EchoLife OT925-G User Guide Tables Item Description Signal cables, Bundle signal cables or optical fibers moderately at the turning. optical fibers The routing of signal cables and optical fibers complies with the engineering design, with equal space between cable ties.
  • Page 40 EchoLife OT925-G User Guide Tables LED status Name Color Status Description Green The device is powered on normally. (Power LED) The power cable is connected incorrectly or the device is faulty. Powering Off the OT925-G Turn off the power switch of the OT925-G.
  • Page 41 EchoLife OT925-G User Guide Contents Contents 3 Configuration Guide ......................xl 3.1 Overview ..........................xli 3.2 Logging Onto the Device ....................xlii 3.3 Configuring a Port......................xliii 3.4 Configuring the Port Insulation ..................xlvi 3.5 Configuring the Multicast Service ..................xlvii 3.6 Configuring the GPON Service..................
  • Page 43 EchoLife OT925-G User Guide Figures Figures Figure 3-1 Web page............................xli Figure 3-2 Port page............................xliii Figure 3-3 Insulation page..........................xlvi Figure 3-4 Multicast page..........................xlvii Figure 3-5 GPON Setting page..........................l Figure 3-6 TDM Impedance page ........................li Huawei Technologies Proprietary Issue 02 (2007-08-30)
  • Page 45 EchoLife OT925-G User Guide Tables Tables Table 3-1 Parameters of the Port page......................xliv Table 3-2 Working mode of the Ethernet port....................xlv Table 3-3 Parameters of the Insulation page ....................xlvi Table 3-4 Parameters of the Multicast page ....................xlviii Table 3-5 Parameters of the GPON Setting page....................li Table 3-6 Parameters of the TDM Impedance page ...................lii...

  • Page 46: Configuration Guide

    EchoLife OT925-G User Guide Tables Configuration Guide About This Chapter The following table lists the contents of this chapter. Section Description 3.1 Overview This section describes how to configure and manage the OT925-G. 3.2 Logging Onto the This section describes how to log onto the Web interface of Device the OT925-G.

  • Page 47: Overview

    EchoLife OT925-G User Guide Tables Overview This section describes how to configure and manage the OT925-G. United Management Mode In the unified management mode, the network management system (NMS) adopts the OMCI mode to manage the OT925-G through the OLT agent. You can configure the GPON, multicast and TDM services through the NMS.

  • Page 48: Logging Onto The Device

    EchoLife OT925-G User Guide Tables Logging Onto the Device This section describes how to log onto the Web interface of the OT925-G. Context Before logging onto the device, make the following preparations: Use a network cable to connect the OT925-G to a PC.

  • Page 49: Configuring A Port

    EchoLife OT925-G User Guide Tables Configuring a Port This section describes how to configure a port, including its working mode and local exchange function. Context The virtual local area network (VLAN) technology logically divides a group of PCs into the same VLAN.
  • Page 50 EchoLife OT925-G User Guide Tables Procedure Click Advanced Setting > Lanswitch > Port in the navigation tree to display the configuration page. Select a desired working mode for the port from the Port Mode list. Click Disable Local Exchange to configure the local exchange function of the port.
  • Page 51 EchoLife OT925-G User Guide Tables The working mode of the Ethernet port is decided by the configuration of the OT925-G and that of the peer device. Taking the 10/100BaseT port as an example, 0 shows the configuration and negotiation result.

  • Page 52: Configuring The Port Insulation

    EchoLife OT925-G User Guide Tables Configuring the Port Insulation This section describes how to configure the insulation for a GE port. Context When the GE port used, you must configure the parameters on the Web page according to the types of the devices connected to the GE port.

  • Page 53: Configuring The Multicast Service

    EchoLife OT925-G User Guide Tables Configuring the Multicast Service This section describes how to configure the multicast service, including the multicast VLAN mode and Internet Group Management Protocol (IGMP) mode. Context Multicast refers to the point to multipoint (PTM) communication mode in which the information source sends information to the certain subset of all network nodes.
  • Page 54 EchoLife OT925-G User Guide Tables Parameter Description Parameters of the Multicast page Parameter Parameter Description Multicast VLAN ID Multicast VLAN ID. Range: 1–4094. IGMP Capture IGMP Capture mode. Control the multicast upstream packets on the user side. On: Enable the IGMP function and the multicast packets can be transferred through the OT925-G based on the IGMP protocol.

  • Page 55: Configuring The Gpon Service

    EchoLife OT925-G User Guide Tables Configuring the GPON Service This section describes how to configure the GPON service, including the trust mode, map mode and layer-2 (L2) transparent transmission. Context Trust mode refers to the judging of data transmission priority. You can configure the GPON encapsulation mode (GEM) port priority or VLAN priority as data transmission priority.
  • Page 56 EchoLife OT925-G User Guide Tables Page shows the GPON Setting page. GPON Setting page Procedure Click Advanced Setting > GPON Setting in the navigation tree to display the configuration page. Select a desired trust mode in the Trust Mode drop-down list.

  • Page 57: Configuring The Tdm Impedance

    EchoLife OT925-G User Guide Tables Parameter Description Parameters of the GPON Setting page Parameter Parameter Description Trust Mode Trust mode. Value range: GEM port, 802.1p. GEM port trust mode corresponds to VLAN map mode. 802.1p trust mode corresponds to VLAN + Pri or Priority map mode.
  • Page 58 EchoLife OT925-G User Guide Tables Procedure Click Advanced Setting > TDM Setting > TDM Impedance in the navigation tree to display the configuration page. Configure the Impedance option and keep it consistent with the impedance of the cable. Click OK .
  • Page 59 EchoLife OT925-G User Guide Contents Contents 4 Maintenance ........................lviii 4.1 Querying Device Information ....................lix 4.1.1 Querying Summary Information................. lix 4.1.2 Querying Status Information ..................lx 4.1.3 Querying ARP Information ..................lxiii 4.1.4 Querying GPON Statistics ..................lxiv 4.1.5 Querying LSW Statistics ..................lxvi 4.1.6 Querying TDM Statistics ..................lxviii...
  • Page 61 EchoLife OT925-G User Guide Figures Figures Figure 4-1 Summary page ..........................lix Figure 4-2 Status page............................lxi Figure 4-3 ARP page ............................lxiii Figure 4-4 GPON Statistics page........................lxv Figure 4-5 LSW Statistics page ........................lxvi Figure 4-6 TDM Logic Statistics page ......................lxviii Figure 4-7 ErrSecond Statistics page......................lxviii Figure 4-8 VLAN page............................
  • Page 63 EchoLife OT925-G User Guide Tables Tables Table 4-1 Parameters of the Summary page ....................... lx Table 4-2 Parameters of the Status page......................lxii Table 4-3 Parameters of the ARP page ......................lxiv Table 4-4 Parameters of the GPON Statistics page................... lxv Table 4-5 Parameters of the LSW Statistics page ...................lxvii Table 4-6 Parameters of the TDM Logic Statistics page .................lxix...

  • Page 64: Maintenance

    EchoLife OT925-G User Guide Tables Maintenance About This Chapter The following table lists the contents of this chapter. Section Description 4.1 Querying Device This section describes how to query the information of the Information OT925-G. 4.2 Managing This section describes how to back up configuration data, Configuration Data load configuration data, and restore factory defaults.

  • Page 65: Querying Device Information

    EchoLife OT925-G User Guide Tables Querying Device Information This section describes how to query the information of the OT925-G. 4.1.1 Querying Summary Information This section describes how to query the summary information of the OT925-G. Context The summary information refers to the basic information of the device, including board ID, software version, boot loader version, IP address, and subnet mask.

  • Page 66: Querying Status Information

    EchoLife OT925-G User Guide Tables Parameter Description Parameters of the Summary page Parameter Parameter Description Board ID Board ID. Software Version Software version. Bootloader (CFE) Version BIOS version. Boot Region Software version boot region, including "Main Region" and "Backup Region". After the device is upgraded successfully, the device will change the boot region.
  • Page 67 EchoLife OT925-G User Guide Tables Page shows the Status page. You can click Refresh to refresh the status information. Status page Procedure Click Device Information > Status to display the query page. Query the desired information. ----End Huawei Technologies Proprietary...
  • Page 68 Tables Parameter Description Parameters of the Status page Parameter Parameter Description Vendor Device vendor: Huawei. ONU Type ONU type: EchoLife OT925-G. CFE Version CFE (BIOS) version. PCB Version Printed circuit board (PCB) version. MAB Version Manufactured board version. APP Version Software version and version release time.

  • Page 69: Querying Arp Information

    EchoLife OT925-G User Guide Tables Parameter Parameter Description Sn Send Times Sending times of serial number. BER Interval Bit error rate (BER) interval. BIP Error Bit-interleaved parity (BIP) error. Tx Power Level Transmitting optical power level. PST Line Number PON section trace (PST) line number.

  • Page 70: Querying Gpon Statistics

    EchoLife OT925-G User Guide Tables Procedure Click Device Information > ARP to display the query page. Query the desired information. ----End Parameter Description Parameters of the ARP page Parameter Parameter Description IP Address IP address. Flags Success flags. Physical Address MAC address, mapping the IP address uniquely.
  • Page 71 EchoLife OT925-G User Guide Tables Page shows the GPON Statistics page. You can click Refresh to refresh the statistics information. Click Clear to clear the statistics. GPON Statistics page Procedure Click Device Information > GPON Statistics to display the query page.

  • Page 72: Querying Lsw Statistics

    EchoLife OT925-G User Guide Tables Parameter Parameter Description OMCI frame Statistics of successfully transmitted or received OMCI data frames. CPU frame Statistics of successfully transmitted or received CPU data frames. L2 drops Statistics of data frames dropped on network layer 2 (L2).
  • Page 73 EchoLife OT925-G User Guide Tables Parameter Description Parameters of the LSW Statistics page Parameter Parameter Description Port Ports of the OT925-G, including four 10/100BaseT ports, one 100/1000BaseT port, and one IP Host port. Received Statistics of received packets. Transmitted Statistics of transmitted packets.

  • Page 74: Querying Tdm Statistics

    EchoLife OT925-G User Guide Tables 4.1.6 Querying TDM Statistics This section describes how to query the TDM statistics of the OT925-G. Context TDM statistics of the device include: TDM Logic Statistics. ErrSecond Statistics, that is, error second statistics. Page shows the TDM Logic Statistics page and .2 shows the ErrSecond Statistics page.
  • Page 75 EchoLife OT925-G User Guide Tables Procedure Click Device Information > TDM Statistics to display the query page. Click a desired sub-page to query the information. ----End Parameter Description Parameters of the TDM Logic Statistics page Parameter Parameter Description 8K frame statistics at GMAC...

  • Page 76: Querying Vlan Information

    EchoLife OT925-G User Guide Tables 4.1.7 Querying VLAN Information This section describes how to query the VLAN information of the OT925-G. Context VLAN information includes whether tag header is carried in the sent packet and ports contained in a VLAN.
  • Page 77 EchoLife OT925-G User Guide Tables Context GPON Phylink is used to cooperate with the OLT and create a dedicated data channel mapped by the VLAN and priority at the subscriber side. The GPON Phylink is configured by the OLT through the OMCI.

  • Page 78: Querying Tdm Line

    EchoLife OT925-G User Guide Tables Parameter Description Parameters of the GPON Phylink page Parameter Parameter Description Index Index of the GPON Phylink. Type Physical link type. Common data link is supported. Alloc-ID Alloc ID. UpPort Priority Uplink GEM port priority.

  • Page 79: Managing Configuration Data

    EchoLife OT925-G User Guide Tables Procedure Click Advanced Setting > TDM Setting > TDM Line in the navigation tree to display the query page. Query the desired information. ----End Parameter Description Parameters of the TDM Line page Parameter Parameter Description Index Index number.

  • Page 80: Loading Configuration Data

    EchoLife OT925-G User Guide Tables Click Backup Settings to display the download dialog box. Click Save . Select the path for saving the backup file backupsettings.conf , and then click Save . ----End 4.2.2 Loading Configuration Data This section describes how to load the configuration file on the PC to the OT925-G.

  • Page 81: Restoring Default Configuration

    EchoLife OT925-G User Guide Tables ----End 4.2.3 Restoring Default Configuration This section describes how to restore the OT925-G to the factory defaults. Context You can restore the device to the factory defaults by pressing the reset button in the INIT port for 10s.
  • Page 82 EchoLife OT925-G User Guide Tables Context The system can record 200 log items. System log of the OT925-G includes: Event time. Event facility. Event type. Event details. Page shows the System Log page. System Log page Procedure Click Management > System Log to display the query page.
  • Page 83 EchoLife OT925-G User Guide Tables Parameters of the System Log—Configuration page Parameter Parameter Description Configure whether to enable the system log function. Log Level Record type of the log, including Emergency, Alert, Critical, Error, Warning, Notice, Informational, and Debugging. Local Display Level Displayed log type, consistent with Log Level.

  • Page 84: Configuring User Password

    EchoLife OT925-G User Guide Tables Configuring User Password This section describes how to modify a user password. Context Using the admin account, you can manage and configure the OT925-G through the Web page. Page shows the Password page. Password page Procedure Click Management >...

  • Page 85: Loading Software

    EchoLife OT925-G User Guide Tables Load ng Software This section describes how to load the OT925-G software. Context The OT925-G can be upgraded or updated remotely or through a local PC. The system will automatically check and upgrade the software. This provides the protection against upgrade by mistake.

  • Page 86: Saving/Rebooting

    EchoLife OT925-G User Guide Tables Procedure Click Management > Update Software in the navigation tree to display the configuration page. Click Browse… to specify the path for saving the software on the PC. Click Update Software. ----End Saving/Rebooting This section describes how to save the configuration and reboot the OT925-G.
  • Page 87 EchoLife OT925-G User Guide Contents Contents 5 Troubleshooting ......................lxxxiv 5.1 Troubleshooting Common Faults................... lxxxv 5.2 How to Obtain Technical Support from Huawei ............lxxxvii Huawei Technologies Proprietary Issue 02 (2007-08-30) lxxxi...
  • Page 89 EchoLife OT925-G User Guide Tables Tables Table 5-1 LED status description and troubleshooting methods..............lxxxv Table 5-2 Mapping between LINK, AUTH, and device status ..............lxxxvi Huawei Technologies Proprietary Issue 02 (2007-08-30) lxxxiii...
  • Page 90 EchoLife OT925-G User Guide Tables Troubleshooting About This Chapter The following table lists the contents of this chapter. Section Description 5.1 Troubleshooting Common This section describes how to troubleshoot Faults common faults. 5.2 How to Obtain Technical This section describes how to obtain technical Support from Huawei support.
  • Page 91 EchoLife OT925-G User Guide Tables Troubleshooting Common Faults This section describes how to troubleshoot common faults of the OT925-G. The OT925-G provides status LEDs on the front panel. When a fault occurs, you can locate the fault through the LED status.
  • Page 92 EchoLife OT925-G User Guide Tables Mapping between LINK, AUTH, and device status LINK AUTH Device Status Troubleshooting Method Status Status (O1) Initial-state Check whether the OT925-G has raised any loss of signal (LOS)/loss of frame (LOF) alarms. If any, check whether...
  • Page 93 How to Obtain Technical Support from Huawei This section describes how to obtain technical support from Huawei. You can go to the website (http://support.huawei.com) to ask for technical support. First you need to apply for an account. When you log in, select the location My support > My Requests to display a request page. You need to click New Request to create a new ticket, where you should fill in some important information for help.
  • Page 94 EchoLife OT925-G User Guide Contents Contents A Acronyms and Abbreviations..................1 Huawei Technologies Proprietary Issue 02 (2007-08-30) lxxxviii...
  • Page 95 Address Resolution Protocol bit error rate BIOS basic input output system bit-interleaved parity central processing unit Digital Data Network DHCP Dynamic Host Configuration Protocol electro-static discharge Ethernet fast Ethernet FTTB Fiber To The Building Huawei Technologies Proprietary...
  • Page 96 LAN switch media access control network management system optical line terminal optical network unit private branch exchange percent complete printed circuit board PON section trace PSTN Public Switched Telephone Network point to multipoint Huawei Technologies Proprietary...
  • Page 97 Synchronous Digital Hierarchy sequence number, serial number set top box Time Division Multiplexing VLAN virtual local area network Huawei Technologies Proprietary...

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