华为技术有限公司 版权所有 未经许可不得扩散 课程名称 OptiX RTN 600 Configuration —Using the T2000 and T2000 Web LCT 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Foreword Huawei provides NE-level, subnet-level and network-level management systems for the RTN 600 series products. This course describes the NE-level management system OptiX iManager T2000 Web LCT and the subnet-level management system OptiX iManager T2000. 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Reference Digital Microwave Communication principles OptiX iManager T2000 Management System Solution V2.31 OptiX iManager T2000 Web LCT Installation Guide and User Guide 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Objectives Upon completion of this course, you will be able to: Describe the functions of the T2000 and the T2000 Web LCT. Install the T2000 Web LCT. Configure services and protection by using the T2000 and the T2000 Web LCT. 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Contents Introduction to Networks Management Systems Introduction to T2000 Web LCT Introduction to the T2000 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 Comprehensive Management System Solution 课程名称 OSS or integrated NMS Service management layer Integrated NMS & OSS CORBA CORBA iManager T2100 CORBA iManager T2100 Network management layer MML MML MML iManager T2000 iManager T2000 iManager T2000 iManager T2000 NE management layer Qx Qx Qx Qx LCT NE layer The T2000 and the T2000 Web LCT uniformly manages the SDH, RTN, WDM, SONET, Metro and OSN equipment. The T2000 and the T2000 Web LCT provides the standard open northbound interfaces and the OSS integration scheme. The T2000 supports the northbound SNMP interface and the query of alarms through this interface. The T2000 Web LCT is an NE-level management system at the LCT layer. 华为技术有限公司 版权所有 未经许可不得扩散

Introduction to Management Systems 课程名称 The orientation of each management system is as follows: iManager T2000 LCT The T2000 local craft terminal (LCT) realizes the local maintenance and equipment turn-up of Huawei OptiX products. iManager T2000 The iManager T2000 (T2000 for short) is a subnet management system (SNMS) for transport networks. The T2000 manages the full series of Huawei OptiX products. The T2000 supports all functions of the NE layer and some of the network layer management functions. iManager T2100 The iManager T2100 (T2100 for short) is a network-level management system that uniformly manages the full series of Huawei OptiX products. It manages large-scale optical transport networks in a uniform manner. iManager MDS The iManager MDS (MDS for short) is a business-level management system for transport networks. It assists users to plan and simulate an optical transport network. 华为技术有限公司 版权所有 未经许可不得扩散

Introduction to Management Systems 课程名称 Platforms where the management systems are running 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Contents Introduction to Management Systems Introduction to the T2000 Web LCT 3. Introduction to the T2000 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 Contents 课程名称 Introduction to the T2000 Web LCT 2.1 Main Characteristics 2.2 Application Scenario 2.3 Installation Guide 2.4 Connecting to NEs 2.5 Configuration Operations 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Main Characteristics 课程名称 The characteristics of the T2000 Web LCT are as follows: Web-based solution Per-NE configuration and maintenance Access to a local NE through a LAN/RS 232 Access to a remote NE through DCC Management of NEs of various types Concurrent login to a maximum of 32 NEs Integration with the T2000, T2100 or third-party management system 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 T2000 Web LCT – Function 课程名称 The T2000 Web LCT provides the following NE-layer management functions: Service configuration (including PDH and SDH microwave services) Protection configuration (intermediate frequency protection, SNCP, LMSP) Setting and query of the intermediate frequency attributes Setting and query of the radio frequency attributes Data services (the 10M/100M fast Ethernet transparent transmission board EFT4 is supported) Setting and viewing of alarms and performance data Communication and security 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 Contents 课程名称 Introduction to the T2000 Web LCT 2.1 Main Characteristics 2.2 Application Scenario 2.3 Installation Guide 2.4 Connecting to NEs 2.5 Configuration Operations 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Application Scenario 课程名称 Stand-alone The equipment maintenance personnel installs the T2000 Web LCT on a PC. The equipment maintenance personnel manages local or remote NEs by using the T2000 Web LCT. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Application Scenario 课程名称 Integrated The personnel at the network operations center install the EMS or NMS on a PC. Install the T2000 Web LCT as a part of the EMS. The NMS need not be installed. The personnel at the network operations center starts the T2000 Web LCT by using the EMS or NMS client. NE network DCN NMS EMS 华为技术有限公司 版权所有 未经许可不得扩散

华为技术有限公司 版权所有 未经许可不得扩散 Contents 课程名称 Introduction to the T2000 Web LCT 2.1 Main Characteristics 2.2 Application Scenario 2.3 Installation Guide 2.4 Connecting to NEs 2.5 Configuration Operations 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Pre-installation Configuration requirements The T2000 Web LCT runs on the Windows operating system. Hardware requirements CPU: Pentium III 700 MHz or higher RAM: 256 MB (recommended 512 MB or higher) Monitor: 1024 x 768 resolution Serial port: RS 232 Ethernet port: 10M/100M 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Pre-installation (continued) Software requirements Windows XP Professional SP2/Windows 2003 Server Standard SP1 Internet Explorer 6.0 or better Tomcat 5.0 JDK1.4.2 Servlet 2.3 The equipment can be connected to a PC through a crossover network cable, DL4423-crossover network cable 5m-8PIN 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Prerequisite: Windows XP Professional SP2 or Windows 2003 Server standard SP1 must be installed. Procedure Step 1 Uncompress the installation package or Insert the installation CD-ROM, and run the setup.exe file. Click Next. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Step 2 Select I accept the terms of the license agreement and click Next. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Step 3 Enter your user name, company name, and serial number Click Next. The serial number is provided with the installation CD. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Step 4 Click Next. To install in a different folder, click Change...，click Browse and select another folder. The folder name cannot contain special characters such as spaces or punctuations. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Step 5 Click Install and the Setup Status dialog box is displayed. After the T2000 Web LCT is installed, the Installation Complete dialog box is displayed. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Step 6 Click Finish. Click Install and the Setup Status dialog box is displayed. After the T2000 Web LCT is installed, the Installation Complete dialog box is displayed. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Installation Guide 课程名称 Checking the Installation After you install the T2000 Web LCT, you need to check the correctness of installation. Check directories and files as follows: The T2000 Web LCT installation directory. By default is C:\Web_LCT. The installation directory of the jre software. By default is C:\Web_LCT\jre. The installation directory of the Tomcat software. By default is C:\Web_LCT\Tomcat . Check the shortcut icon on desktop. The iManager T2000 Web LCT group is created in the Windows Program bar. The iManager T2000 Web LCT group is created in the Windows Program bar. This group contains the T2000 Web LCT shortcut icon. 华为技术有限公司 版权所有 未经许可不得扩散

Contents Introduction to the T2000 Web LCT 2.1 Main Characteristics 2.2 Application Scenario 2.3 Installation Guide 2.4 Connecting to NEs 2.5 Configuration Operations

T2000 Web LCT – Connecting to NEs 课程名称 To use the T2000 Web LCT to configure and manage NEs, you need to connect the T2000 Web LCT to NEs with an Ethernet cable or a serial port. Procedure By using a network cable 1. Connect a network cable to the computer where the T2000 Web LCT resides. 2. Route the network cable to the equipment side and connect the RJ-45 connector of the network cable to the network management interface on the front panel of the equipment. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Web LCT – Connecting to NEs 课程名称 Procedure (continued) By using DCN 1. Use a network cable to connect the computer where the T2000 Web LCT resides to the DCN. 2. Connect one end of another network cable to the network management interface on the front panel of the equipment. Connect another end to the DCN. By using an RS 232 serial port cable 1. Connect the serial port cable to the computer where the T2000 Web LCT resides. 2. Route the serial port cable to the equipment side. Connect the RS 232 connector of the serial port cable to the RS 232 interface on the front panel of the equipment. 华为技术有限公司 版权所有 未经许可不得扩散

Contents Introduction to the T2000 Web LCT 2.1 Main Characteristics 2.2 Application Scenario 2.3 Installation Guide 2.4 Connecting to NEs 2.5 Configuration Operations

Contents Configuration Operations 2.5.1 Logging In to an NE 2.5.2 Modifying the NE ID 2.5.3 Configuring IF Protection 2.5.4 Setting IF Attributes 2.5.5 Setting RF Attributes 2.5.7 Configuring Service 2.5.7 Configuring SNCP Service 2.5.8 Converting service 2.5.9 Alarm 2.5.10 Performance 2.5.11 Communications and Security

Web LCT Configuration – Logging In to an NE 课程名称 Step1 Double-click the T2000 Web LCT shortcut icon on the desktop to launch the T2000 Web LCT. Step2 The User Login screen is displayed. Enter the user name and password. Click Login. By default, the initial user name is admin, and the password is T2000. To protect the Web LCT from illegal logins, you need to instantly change this password and keep the new one. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Logging In to an NE 课程名称 Step3 Create an NE in one of the following two ways. 1. Click NE Search and specify the search criteria. Select the NE to be added to create a new NE. You can also create NEs by manually adding the NEs. Since the NE ID is unknown during the initial NE configuration, the search-and-add method is preferred. In the NE List, click NE Search.Then, the Search NE dialog box is displayed.Set Domain to 129.9.255.255, and click Search.After the Web LCT finds the NEs, click End Search. Click Add NE. After the prompt box that indicates the NE is successfully added is displayed, click OK.Then, a new NE is added into the NE list. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Logging In to an NE 课程名称 2. Create an NE directly. Click the “Add NE” and Enter the information of the NE and create the NE. Since the NE ID is unknown during the initial NE configuration, the search-and-add method is preferred. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Logging In to an NE 课程名称 Step 4: In the NE List, select the target NE and click NE Login.Then, the IE displays the NE Login dialog box. When an NE is created, you need to log in to the NE first before managing the NE. The User Name is root by default.The Password is password by default. Step 5:Enter the User Name and the Password. Then, click OK. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Modifying the NE ID 课程名称 Step 1 In the NE Explorer, choose Configuration > NE Attribute from the Function Tree. Click Modify NE ID. Based on the engineering planning, you can modify the NE IDs to ensure each NE ID is unique.This operation does not interrupt the service but affects the communication between the Web LCT and the NE. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Modifying the NE ID 课程名称 Step 2 Enter a new ID and click OK. Enter the new ID and extended ID. The extended ID by default is 9, if no special request, do not change it. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Modifying the NE ID 课程名称 Step 3 In the NE list, delete the original NE. Create a new NE with the new ID. After modifying the NE ID, you need to create and log in to the new NE. Only in this way can you recreate the communication between the Web LCT and the NE. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Configuring IF Protection 课程名称 The supported IF protection is 1+1 HSB, 1+1 SD, and 1+1 FD. Create IF protection Step 1 In the NE Explorer, choose Configuration > IF 1+1 Protection from the Function Tree. If a Microwave is configured with the 1+1 HSB/FD/SD protection, the relative information of the IF 1+1 protection need be configured. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Configuring IF Protection 课程名称 Step 2 Click New and enter the information of the IF protection. Click OK or Apply. If you select the IF protection SD or FD, the IF board must support paired slots 5 and 7, or 6 and 8. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Configuring IF Protection 课程名称 Perform IF protection external switching. The priorities of external switching commands are as follows: clear, lockout, force, and manual. The switching commands are provided in the shortcut menu. Select a protection group, right-click and choose a switching option from the shortcut menu. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting IF Attributes 课程名称 You can set the following IF attributes by using the T2000 Web LCT: working mode, link ID, IF port loopback, 2 Mbit/s wayside service, and ATPC-related information. In the NE Explorer, select an IF board and choose IF Interface from the Function Tree. 2 Mbit/s wayside service: If the working mode of an IF board is STM-1, the equipment can transmit a 2 Mbit/s wayside service through the regeneration section overhead. The 2 Mbit/s wayside service is accessed through the external clock interface, connected to the IF board without passing through the cross-connect module, and transmitted through the regeneration section overhead. The input board of the 2 Mbit/s wayside service is the corresponding cross-connect board. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting IF Attributes 课程名称 You can enable automatic transmit power control (ATPC), and adjust the threshold and the ATPC adjustment. The ATPC technology is used to enable the output power of a radio transmitter to automatically change in the ATPC range according to the change of the received level of the receiver. Hence, the output power of the transmitter remains at a fixed low level under normal conditions. You can manually enable ATPC. ATPC adjustment threshold: ATPC adjusts the transmitted power according to the received level of the receiver, to ensure that the received level of the receiver falls inside the range that meets the reliability of channels, and the transmitter is working at a small transmitted power under 99% conditions. To achieve this, you need to configure the level range of the receiver. When the level exceeds the range, you need to adjust the power of the transmitter. To adjust the threshold is to adjust the level range of the receiver. ATPC adjustment increment: To realize a sharp decrease of power, it is required that ATPC can quickly adjusts the transmitted power. Due to communications problem, RSSI detection cannot be too fast. Hence, you need to increase the ATPC increment to adjust the ATPC speed of power adjustment. By default, the increment is 5 dBm. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting RF Attributes 课程名称 By using the T2000 Web LCT, you can query and configure the following RF attributes: transmit frequency, T/R spacing, transmitted power, ODU manufacturer information, RF loopback status, and ODU status. Frequency attributes By using the T2000 Web LCT, you can query and configure the following RF attributes: transmit frequency, T/R spacing, transmitted power, ODU manufacturer information, RF loopback status, and ODU status. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting RF Attributes 课程名称 Power attributes Transmitted power: For the OptiX RTN equipment, the IDU type is not related to a frequency band, while the ODU type depends on a frequency band. According to the supported channel, the bandwidth is divided into multiple frequency points. Signals can be correctly transmitted and received only when the frequency point of the transmitted matches the frequency point of the receiver. Hence, you need to set the RF frequency point for a port. Query the actual transmitted power. When you enable ATPC, as ATPC automatically adjusts the transmitted power, the actual transmitted power that you query may be the same as the power that you set. You can query the actual transmitted power. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting RF Attributes 课程名称 ODU manufacturer information Transmitted power: For the OptiX RTN equipment, the IDU type is not related to a frequency band, while the ODU type depends on a frequency band. According to the supported channel, the bandwidth is divided into multiple frequency points. Signals can be correctly transmitted and received only when the frequency point of the transmitted matches the frequency point of the receiver. Hence, you need to set the RF frequency point for a port and the value must be an integer multiple of 250. T/R spacing refers to the spacing between the transmitted power and the received power. To ensure that the transmitted power and the received power do not interfere with each other, there must be spacing between them. Some ODUs support two TR spacing. Under special conditions, the standard TR spacing cannot meet the requirement. Hence, you need to set the TR spacing. If you do not set it, you can set this parameter to 0. The product SN includes the serial number and manufacturer number. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Setting RF Attributes 课程名称 In the Advanced Attributes tab, you set RF loopback and ODU status. Configure the transmission status. To avoid transmission interference, after the ODU is powered on, it is disabled to transmit signals by default. Hence, after you apply the ODU configuration to an NE, you need to manually enable the RF transmission of the ODU and the message is directly sent to the ODU to enable or disable the RF transmission. The ODU works in this way. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Configuring a Service This operation is applicable to VC4, VC3, and VC12 services. Procedure Step 1 In the NE Explorer, Configuration -> Cross-Connection Configuration from the Function Tree.

Web LCT Configuration – Configuring a Service

Web LCT Configuration – Configuring a Service 课程名称 Step 2 Click New, enter the information of a service and click OK or Apply. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Configuring an SNCP Service This operation is applicable to VC12, VC3, and VC4 SNCP services. Procedure Step 1 In the Cross-Connection Configuration window, click Create SNCP. Enter the information of an SNCP service.

Web LCT Configuration – Configuring an SNCP Service 课程名称 Step 2 After you create an SNCP service, the window is divided into two panes. The upper pane displays the working service and the lower pane displays the protection service. You can perform external switching for the working and protection services. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Converting a Service 课程名称 The T2000 Web LCT supports the conversion between a normal service and an SNCP service. To convert a normal service to an SNCP service, select a normal service, right-click and choose Convert to SNCP from the shortcut menu. Enter the source of the service in the protection channel and click OK. This operation is applicable to a unidirectional service whose source is a line board or an IF board. The source and sink of the original service serve as the source and sink of the working channel of the SNCP service. You need to select the source of the protection channel of the selectively-receiving point of the SNCP service. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Converting a Service 课程名称 You can convert the working or protection channel of an SNCP service to a normal service. To convert a working channel, right-click the service in the working channel and choose SNCP Working Service Change to Normal Service from the shortcut menu. After the conversion, the unidirectional service in the working channel is retained. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Converting a Service 课程名称 To convert a protection channel, right-click the service in the protection channel and choose SNCP Protection Service Change to Normal Service from the shortcut menu. After the conversion, the unidirectional service in the protection channel is retained. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Alarm By using the T2000 Web LCT, you can view the current and history alarms, the reporting status of alarms for an NE and boards, and abnormal events.

Web LCT Configuration – Performance 课程名称 The T2000 Web LCT supports 15-minute and 24-hour performance monitoring intervals. During the commissioning and troubleshooting process, enable the 15-minute and the 24-hour performance monitoring at the same time. In case of normal operation, enable only the 24-hour performance monitoring. 华为技术有限公司 版权所有 未经许可不得扩散

Web LCT Configuration – Performance You can view the current and history performance data, UAT events, threshold crossings, and performance monitoring status. You can set the performance threshold and reset a board registry.

Web LCT Configuration – Communications The RTN 600 uses the OSP NE platform. You can set multiple protocol stacks, including the OSI, IP, and HWECC.

Web LCT Configuration – Communications For DCC management, an IF board supports the configuration of different DCC rates in different working modes. When the working mode is PDH, the configuration of one-byte DCC (D1-D1) rate is supported. When the working mode is SDH, the configuration of D1-D3, D4-D12, D1-D12, and D1-D1 is supported.

Contents Introduction to Management Systems Introduction to T2000 Web LCT 3. Introduction to T2000

Contents Introduction to T2000 3.1 Main Characteristics 3.2 Application Scenario 3.3 Configuration Operations

T2000 Main Characteristics The T2000 consists of server and client. The server is developed based on C++ and the client is based on Java. The T2000 manages a maximum of 1000 equivalent NEs and supports concurrent operations of 32 clients. T2000 server T2000 client

T2000 Main Characteristics Modular architecture Open and integrated High efficiency and reliability

Contents Introduction to T2000 3.1 Main Characteristics 3.2 Application Scenario 3.3 Configuration Operations

T2000 Application Scenario Subnet management system (SNMS) Applicable to small and medium network management Provides power NE management functions Uniformly manage the RTN/SDH/ASON/MSTP/WDM equipment Provides the standard northbound interfaces and supports OSS integration iManager T2000

Contents Introduction to T2000 3.1 Main Characteristics 3.2 Application Scenario 3.3 Configuration Operations

Contents Configuration Operations 3.3.1 Microwave link 3.3.2 Alarm 3.3.3 Performance 3.3. 4 Linear MSP

T2000 Configuration – Creating a Microwave Link 课程名称 The T2000 allows you to create a Microwave link. You can view the networking on the Main Topology. Step 1 On the Main Topology, right-click and choose Microwave link from the shortcut menu. Enter the information of the Microwave link. Currently, the T2000 supports the creation of Microwaves. The management and search of links, and the configuration of end-to-end radio service are supported in future versions. The source and sink boards must be IF boards. The source and sink boards must have the same IF board capacity settings. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Configuration – Creating a Microwave Link Alternatively, click the icon on the toolbar to display the Create Link window.

T2000 Configuration – Creating a Microwave Link 课程名称 Step 2 Click OK or Apply. The link is displayed as follows: The source and sink IF board of a Microwave must have the same working mode settings. When you configure IF protection, the standby board and the active board must have the same service capacity. 华为技术有限公司 版权所有 未经许可不得扩散

T2000 Configuration –Creating a Microwave Link When the source and the sink have different working modes, the link status is abnormal.

Current Alarm Statistics An NE reports current alarms to the T2000. You can filter alarms according to the report time of alarms. You can view alarm statistics in each NE.

Customizing Alarm Attributes You can customize alarm functions, such as alarm severity, alarm suppression, and alarm reporting. The T2000 supports a maximum of 16 alarm templates.

Alarm Correlation Analysis and Suppression A number of NE alarms Alarm analysis rule Root alarm Characteristics: Retain the root alarms. Suppress the non-root alarms. Customize the analysis rules. Suppress non-root alarms

Customizing Performance Threshold 课程名称 The T2000 supports customization of a maximum of 16 performance thresholds. After you set a performance threshold template, you can select a template when you set the performance threshold for a board. 华为技术有限公司 版权所有 未经许可不得扩散

History Performance Analysis The T2000 provides graphic history performance data analysis.

T2000 Configuration The T2000 and T2000 Web LCT are the same in terms of service configuration, IF protection, IF and RF attributes, and communications. Refer to the description in the T2000 Web LCT part.

华为技术有限公司 版权所有 未经许可不得扩散 课程名称 Thank You www.huawei.com 华为技术有限公司 版权所有 未经许可不得扩散