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Maintaining the ePico3801

About This Chapter

This chapter describes how to maintain the ePico3801. After the ePico3801 is put into use, you
need to perform routine maintenance on the ePico3801 to ensure the proper running of the
ePico3801.

6.1 ePico3801 Routine Maintenance Items

This chapter describes how to perform routine checks on the hardware and monitor the running
status of the ePico3801.

6.2 Powering On and Powering Off the ePico3801

This chapter describes how to power on and power off the ePico3801.

6.3 Replacing the ePico3801

This chapter describes how to replace the ePico3801. Replacing the ePico3801 disrupts the
services carried on the ePico3801.

ePico3801
User Guide

6 Maintaining the ePico3801

Issue 01 (2009–09–23)

Huawei Proprietary and Confidential

6-1

Содержание ePico3801

Страница 1: ...ePico3801 V200R011C00 User Guide Issue 01 Date 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd ...

Страница 2: ...y form or by any means without prior written consent of Huawei Technologies Co Ltd Trademarks and Permissions and other Huawei trademarks are the property of Huawei Technologies Co Ltd All other trademarks and trade names mentioned in this document are the property of their respective holders Notice The information in this document is subject to change without notice Every effort has been made in ...

Страница 3: ...cenarios 2 18 3 ePico3801 Initial Configuration 3 1 3 1 Logging in to the ePico WebUI 3 2 3 2 Configuring the ePico3801 3 3 4 Commissioning the ePico3801 4 1 4 1 Commissioning Procedure 4 2 4 2 Checking the Hardware Status 4 3 4 3 Checking the Network Transmission 4 5 4 4 Checking the Software Version 4 7 4 5 Checking the Running Status 4 8 4 6 Testing Services 4 8 4 7 Data Sheet for Commissioning...

Страница 4: ...ters 5 11 5 5 3 Modifying the VLAN Attributes 5 12 5 6 Adjusting the ePico3801 Functions 5 13 5 6 1 Modifying the HSPA Status 5 13 5 6 2 Configuring the Emergency Call Redirection Switch 5 14 5 6 3 Modifying the Access Reject Reason 5 14 5 6 4 Modifying the Location Indication Mode 5 15 5 6 5 Setting the Differentiated Billing Parameters 5 16 5 6 6 Configuring the Locating Function 5 16 6 Maintain...

Страница 5: ... 2 8 Figure 2 5 AC DC power adapter 2 10 Figure 2 6 PSE 2 11 Figure 2 7 Networking in modem access mode 2 16 Figure 2 8 Networking in LAN access mode 2 17 Figure 2 9 Typical installation scenarios of the ePico3801 2 18 Figure 2 10 Application of the ePico3801 in an SME 2 19 Figure 3 1 Logging in to the WebUI 3 3 Figure 4 1 Commissioning procedures 4 3 ePico3801 User Guide Figures Issue 01 2009 09 ...

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Страница 7: ...e 2 9 Physical specifications of the ePico3801 2 14 Table 2 10 Power Consumption Specifications of the ePico3801 2 15 Table 2 11 Environmental specifications of the ePico3801 2 15 Table 4 1 Tools for ePico3801 commissioning 4 2 Table 4 2 Normal status of the LEDs 4 4 Table 4 3 Abnormal status of the LEDs 4 4 Table 4 4 Basic items in the service test 4 9 Table 4 5 Data sheet for commissioning 4 9 T...

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Страница 9: ...nization 1 Changes in the ePico3801 User Guide This describes the changes in the ePico3801 User Guide 2 Introduction to the ePico3801 The ePico3801 is a pico base station used as the radio access device in the uBro solution to enhance indoor coverage Being one of a series of ePico products developed according to the FDD protocols in 3GPP R99 R4 R5 R6 the ePico3801 provides indoor users with improv...

Страница 10: ...ePico3801 Conventions Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates a hazard with a high level of risk which if not avoided will result in death or serious injury Indicates a hazard with a medium or low level of risk which if not avoided could result in minor or moderate injury Indicates a potentially hazardous situation which...

Страница 11: ...y vertical bars One item is selected or no item is selected x y Optional items are grouped in braces and separated by vertical bars A minimum of one item or a maximum of all items can be selected x y Optional items are grouped in brackets and separated by vertical bars Several items or no item can be selected GUI Conventions The GUI conventions that may be found in this document are defined as fol...

Страница 12: ... Operations The mouse operations that may be found in this document are defined as follows Action Description Click Select and release the primary mouse button without moving the pointer Double click Press the primary mouse button twice continuously and quickly without moving the pointer Drag Press and hold the primary mouse button and move the pointer to a certain position About This Document ePi...

Страница 13: ...scribes the changes in the ePico3801 User Guide 01 2009 09 15 This is the initial release ePico3801 User Guide 1 Changes in the ePico3801 User Guide Issue 01 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 1 1 ...

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Страница 15: ...s HSPA With the ePico3801 network planning and optimization are convenient and security is high The ePico3801 makes it possible to deploy flexible and seamless UMTS network coverage quickly 2 3 Composition of the ePico3801 The ePico3801 consists of the ePico3801 body and the power adapter The ePico3801 body provides the LEDs reset button power port and FE port The ePico3801 supports the AC power s...

Страница 16: ...co3801 and the UE to ensure compatibility with existing commercial terminals Figure 2 1 shows the position of the ePico3801 on the network of the uBro solution Figure 2 1 Position of the ePico3801 on the network of the uBro solution ePico3801 The functions of the ePico3801 are equivalent to the functions of the NodeB plus some functions of the RNC It serves as the UMTS radio access device performi...

Страница 17: ...olution l Supporting the IP security protocol IPSec virtual private network VPN tunneling function through which the SeGW establishes IPSec VPN tunnels between itself and ePico3801s to provide security protection for communications between ePico3801s and the network elements on the core network of the uBro solution AAA The Authentication Authorization and Accounting AAA performs authentication for...

Страница 18: ...o3801 supports EAP SIM and EAP AKA authentication to guarantee network security l The ePico3801 supports user management and admission control Thus unauthorized UEs cannot use the ePico3801 and the user s investments are protected l The emergency call function provides high security for users l For the North American market the ePico3801 meets the requirements for the E911 location function at a h...

Страница 19: ... power adapter When the PoE power supply is used the ePico3801 needs to be configured with the power supply equipment PSE 2 3 1 ePico3801 Body The ePico3801 body consists of the ePico board RF subboard and plastic case The ePico board is responsible for the main control of the system and the processing of baseband signals In addition the ePico board provides power supply for the RF unit and contro...

Страница 20: ...ePico3801 The ePico3801 provides a power port FE port USIM SIM port antenna port LED and reset button Figure 2 3 shows the ports and buttons on the panel of the ePico3801 2 Introduction to the ePico3801 ePico3801 User Guide 2 6 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2009 09 23 ...

Страница 21: ...01 to the Ethernet transmission equipment When the PoE power supply is used this port is used to provide the working power supply for the ePico3801 2 PWR This port is connected to an AC DC power adapter to provide the 12 V DC power supply 3 GPS This port is the external GPS antenna port 4 ANT A This port is the external UMTS antenna port 5 SIM CARD This port is used to hold the USIM or SIM card eP...

Страница 22: ...ing frequencies The four LEDs are located on the front panel of the ePico3801 After sliding open the cover in the upper left corner of the front panel you can see the four LEDs as shown in Figure 2 4 Figure 2 4 LEDs of the ePico3801 Table 2 2 describes the status of the LEDs of the ePico3801 Table 2 2 Status of the LEDs of the ePico3801 LED Function Color Status Meaning PWR This LED indicates the ...

Страница 23: ... users are using services On and red There is no GPS signal Red and blinking on for 1s and off for 1s The signal is exposed to slight interference The device can work but the communication quality is degraded Red and blinking on for 0 125s and off for 0 125s The signal is exposed to severe interference and therefore the device cannot work LINK This LED indicates the connectivity of the Ethernet po...

Страница 24: ...ameters of the AC DC power adapter Table 2 3 Specifications and parameters of the AC DC power adapter Item Specification Input voltage 110 220 V AC 90 V AC to 264 V AC Frequency of the input voltage 47 Hz to 63 Hz Output voltage 12 V DC 11 4 V DC to 12 6 V DC Output current 2 9 A PoE Power Supply When the PoE power supply is used the ePico3801 needs to be configured with the PSE which powers the e...

Страница 25: ...on device of the user PoE output port PoE Connected to the ePico3801 Table 2 5 describes the LEDs on the PSE Table 2 5 LEDs on the PSE LED Color and Status Description AC On and green The power supply is normal Off There is no power input or the PSE is faulty ePico3801 User Guide 2 Introduction to the ePico3801 Issue 01 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies C...

Страница 26: ...Specifications The performance specifications of the ePico3801 involve its RF performance capacity transmit power and service capabilities 2 4 2 Physical and Electrical specifications The physical and electrical specifications of the ePico3801 are its physical specifications power consumption specifications and environmental specifications 2 4 1 Performance Specifications The performance specifica...

Страница 27: ... by the same RF board which can be configured to support either band II or band V based on the actual situation Service Capabilities Table 2 8 Service capabilities of the ePico3801 Item Specification Ordinary PS and CS services Supporting a maximum of 32 concurrent UEs Supporting a maximum of 32 concurrent UEs that use CS services Supporting a maximum of 16 concurrent UEs that use PS services The ...

Страница 28: ... are known as CS users Users that have PS services are known as PS users PS users can also have CS services l Among the three PS services in the maximum service combination of a single user one service is carried by IMS 2 4 2 Physical and Electrical specifications The physical and electrical specifications of the ePico3801 are its physical specifications power consumption specifications and enviro...

Страница 29: ...e in small and medium enterprises SMEs SOHOs schools and office buildings and for hot spot indoor coverage at pubs airports stores and hotels 2 5 1 Access Networking Scenarios The ePico3801 is connected to an enterprise LAN or modem which connects the ePico3801 to the public IP network Then the public IP network connects the ePico3801 to the AG and the AG connects the ePico3801 to the UMTS core ne...

Страница 30: ...public IP network through a fixed phone modem or cable TV cable Principle of Modem Access Each ePico3801 is connected to the public IP network through a modem The digital subscriber line access multiplexer DSLAM performs data convergence and distribution and isolates the ePico3801 from other ePico3801s through a private VLAN The service data is sent to the broadband access server BRAS in Point to ...

Страница 31: ...e public IP network The SeGW processes the data and forwards it to the AG and AAA Figure 2 8 shows the networking in LAN access mode Figure 2 8 Networking in LAN access mode Access Authentication Like modem access networking LAN access networking also supports access authentication in PPPoE dial up mode static IP address mode and DHCP mode 2 5 2 Installation Scenarios If installed in a factory or ...

Страница 32: ...kly at low cost The ePico3801 has a good performance in terms of eliminating dead zones on the UMTS network implementing hot spot indoor coverage and providing small scale private network coverage Typically the ePico3801 provides small scale private network coverage or hot spot indoor coverage for users in SMEs Figure 2 10 shows the application of the ePico3801 in an SME 2 Introduction to the ePic...

Страница 33: ...Figure 2 10 Application of the ePico3801 in an SME ePico3801 User Guide 2 Introduction to the ePico3801 Issue 01 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 2 19 ...

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Страница 35: ...Pico3801 supports the DHCP authentication mode The initial configuration is not required If you need to use the PPPoE dial up or static IP authentication mode initial configuration is required 3 1 Logging in to the ePico WebUI This describes how to log in to the WebUI For details about how to log in to the AP Manager see the AP Manager Operator Guide 3 2 Configuring the ePico3801 This chapter desc...

Страница 36: ...roxy server area ensure that the check box Use a proxy server for your LAN is not selected Then click OK Procedure Step 1 Allocate an IP address for the computer The IP address must be on the same network segment as the IP address of the ePico NOTE The default IP address of the ePico is 172 16 1 1 and the subnet mask is 255 255 255 0 To modify the default IP address do as follows 1 Type http 172 1...

Страница 37: ...tton to reset the system If the duration of system unblocking is set to 0 on the AP Manager it indicates that you must reset the ePico for re login when your account is locked Click Change password to change your password The new password must meet the following conditions l The new password must consists of 8 to 18 characters l The new password cannot contain 3 or more consecutive same characters...

Страница 38: ...age choose Transfer Basic ETHIP and then click Mod 2 Change the value of Auto IP to DISABLE and enter the required static IP address net mask and gateway IP address Then click Done 3 The ePico3801 restarts automatically to validate the new configuration End Postrequisite After the initial configuration the following items must be confirmed l The corresponding ePico zone has been activated l The eP...

Страница 39: ...e that the ePico3801 communicates with other NEs properly 4 4 Checking the Software Version This chapter describes how to check the software version of the ePico3801 4 5 Checking the Running Status This chapter describes how to check the running status of the ePico3801 4 6 Testing Services This chapter describes how to test the services provided by the ePico3801 to ensure that the ePico3801 can pr...

Страница 40: ...nce IP address through a PC to perform local commissioning or log in to the AP Manager APM to perform commissioning UE 2 Use the UEs to make call tests on ePico3801 services Fixed line telephone 1 Use the fixed line telephone to make call tests on ePico3801 services The following basic information must be obtained before the commissioning l The networking mode and transmission mode of the ePico380...

Страница 41: ...e the UEs to test the services provided by the ePico For details see 4 6 Testing Services End 4 2 Checking the Hardware Status This chapter describes how to check the status of the ePico3801 hardware Procedure Step 1 Check the LEDs on the equipment If the LEDs on the ePico3801 are in the state described in Table 4 2 it indicates that the equipment is functioning properly ePico3801 User Guide 4 Com...

Страница 42: ... the status of the RUN ALM LED again If the RUN ALM LED still blinks four times every second record the problem in the commissioning table for the analysis through the AP Manager APM Blinking red ON for 1s and OFF for 1s A critical alarm is reported which affects the services The ePico3801 cannot provide services Record the problem in the commissioning table for the analysis through the APM Blinki...

Страница 43: ...nce The ePico3801 cannot work properly LINK OFF green The Ethernet port is connected improperly Check whether the Ethernet ports on the ePico3801 and the peer equipment are faulty and whether the Ethernet cable is available End 4 3 Checking the Network Transmission This chapter describes how to check the network transmission of the ePico3801 to ensure that the ePico3801 communicates with other NEs...

Страница 44: ...nication between the ePico3801 and the SecGW fails l Check whether the IP address of the firewall configured on the ePico is correct l Check whether the firewall works normally 2 Check the SCTP State status If Description Then The SCTP State status is OK The SCTP link is established Go to Step 3 3 The SCTP State status is NOK The SCTP link is not established The communication between the ePico and...

Страница 45: ...ists contact the Huawei technical support engineers End 4 4 Checking the Software Version This chapter describes how to check the software version of the ePico3801 Prerequisite l The network transmission between the ePico3801 and the AP Manager APM is normal l The ePico3801 hardware is normal l You have logged in to the WebUI through a computer Procedure l Log in to the WebUI to check the software...

Страница 46: ... active alarm cannot be cleared Record the alarm in the 4 7 Data Sheet for Commissioning End 4 6 Testing Services This chapter describes how to test the services provided by the ePico3801 to ensure that the ePico3801 can provide basic telecommunication services such as CS and PS services Prerequisite l The ePico cell is set up l Two functional UEs UE 1 and UE 2 are ready l The IMSIs of UE 1 and UE...

Страница 47: ...e is clear l The video is clear and uninterrupted l The voice is synchronized with the video 4 7 Data Sheet for Commissioning This chapter provides the data sheet that is used to record the process and result of the commissioning Table 4 5 Data sheet for commissioning Site Name Models Commission Time Commissioning Engineer Commissioning Result Successful Failed Commissioning Item Conclusion Handli...

Страница 48: ...s on the ePico3801 Table 4 6 describes the communication ports on the ePico3801 Table 4 6 Communication ports on the ePico3801 Prot ocol A Side A Side Port Num ber RX B Side B Side Port Number TX Service Authority Manageme nt TCP ePico 3801 80 IE browser 1024 6553 5 WebUI port for local OM Username and password TCP ePico 3801 6000 LMT 1024 6553 5 MML port for local OM Username and password TCP ePi...

Страница 49: ...ol port TCP ePico 3801 500 SeGW 1024 6553 5 Default IKE port of the IPSec TCP ePico 3801 4500 SeGW 1024 6553 5 NAT protocol port of the IPSec TCP ePico 3801 3300 3 CLK Server 1024 6553 5 Clock synchronization ePico3801 User Guide 4 Commissioning the ePico3801 Issue 01 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 4 11 ...

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Страница 51: ...adjustment parameters for the ePico3801 to ensure that the interference is effectively reduced and the voice quality meets the requirements In normal cases these parameters need not be modified after the parameter setting is complete 5 4 Adjusting Mobility Management Parameters This chapter describes how to adjust the ePico3801 parameters related to the cell reselection and handover if required In...

Страница 52: ...out neighboring cells to manual configuration For details see 5 2 Setting ePico Cell Parameters You can change the configuration information of a cell as required Procedure Step 1 Log in to the APM Choose Configuration Zone Configuration and select an ePico zone to be maintained Then click Configure Step 2 In the displayed window select the correct version from the Version drop down list and then ...

Страница 53: ...of the cell CAUTION You can use this command to modify the AP frequency scramble code and neighboring cell configuration mode after deactivating the cell If the cell is in activated state you cannot modify the cell information directly 3 Choose CELL to modify the basic information of the cell You can use this command to modify the basic information such as the maximum TX power of a cell PSCH TX po...

Страница 54: ...or Operators group Context ePico3801 supports two automatic pilot adjustment modes fast automatic pilot adjustment based on dialing and period automatic pilot adjustment based on measurement Procedure Step 1 Log in to the APM Choose Configuration Single Configuration and select an ePico3801 to be maintained Then click Configure to enter the configuration window Step 2 Choose Terminal Parameter WIR...

Страница 55: ...n adjust the signal quality offset value of the ePico to ensure that the UE preferentially selects an ePico cell to be a serving cell after comparing the signal quality of the macro cell with the signal quality of the ePico cell 5 4 5 Modifying the ePico3801 Parameters Related to the Handover to 3G Macro Cells This chapter describes how to set the ePico3801 parameters manually to implement the han...

Страница 56: ...lp in the corresponding configuration window Step 3 After the parameter setting is complete click Apply A system message is displayed indicating whether the parameter setting is successful End 5 4 2 Modifying 2G Macro Neighboring Cells This chapter describes how to manually add 2G macro neighboring cells on the AP Manager APM This operation can be performed only in manual network planning mode Pre...

Страница 57: ...t the HCS parameters are also set in the macro network Prerequisite l The core network must support the HCS and the HCS parameters are set in the macro network l The parameters of the ePico zone have been set successfully l You have logged in to the AP Manager APM The login account belongs to the Administrator or Operators group Context The HCS priority of the ePico cell is set to the highest valu...

Страница 58: ...s on the cell Procedure Step 1 Log in to the APM Choose Configuration Single Configuration and select an ePico3801 to be maintained Then click Configure to enter the configuration window Step 2 Choose Terminal Parameter WIRELESS Configuration CELLSELRESEL to set cell selection and cell reselection parameters NOTE For details about how to set the parameters see Help in the corresponding configurati...

Страница 59: ...s In normal cases these parameters of the ePico3801 are set automatically No manual setting is required Prerequisite l The 2G macro neighboring cells have been configured automatically or manually l You have logged in to the AP Manager APM The login account belongs to the Administrator or Operators group Procedure Step 1 Log in to the APM Choose Configuration Single Configuration and select an ePi...

Страница 60: ... The AP integrated with the GSM receiver supports two clock synchronization modes 3G clock synchronization over the Um interface and 2G clock synchronization over the Um interface preferred 3G clock synchronization over the Um interface synchronizes clock from the CPICH with the surrounding 3G macro base stations This mode implements the clock synchronization within a short period but the ongoing ...

Страница 61: ...o perform the IP clock delay and jitter test NOTE For details about how to set the parameters see Help in the corresponding command configuration window Step 3 Choose Terminal Parameter TRANSFER Configuration MD5PARA in the navigation tree to configure the MD5 username and password This command is used when the ePico3801 uses the MD5 authentication Step 4 After the parameter setting is complete cl...

Страница 62: ...is chapter describes how to configure the VLAN attributes according to the service type Prerequisite l The parameters of the ePico zone have been set successfully l You have logged in to the AP Manager APM The login account belongs to the Administrator or Operators group l The VLANs have been correctly configured for the LAN switch and the ePico3801 has been connected to the corresponding VLAN int...

Страница 63: ...ied into the PLMN location indication and the SMS location indication 5 6 5 Setting the Differentiated Billing Parameters This chapter describes how to set the differentiated billing parameters on the AP Manager APM 5 6 6 Configuring the Locating Function This chapter describes how to configure the ePico3801 locating function so that the UEs in the coverage area of the ePico3801 can be accurately ...

Страница 64: ...und the ePico cell the emergency calls are still initiated from the ePico cell Procedure Step 1 Log in to the APM Choose Configuration Single Configuration and select an ePico3801 to be maintained Then click Configure to enter the configuration window Step 2 Choose Terminal Parameter WIRELESS Configuration CORRMALGOSWITCH in the navigation tree to configure the emergency call redirection switch NO...

Страница 65: ...sages after entering the ePico cell l PLMN location indication When a UE enters an ePico cell the ePico3801 sends a customized message to the UE After the UE associates the PLMN ID with the message sent from the ePico3801 the customized message instead of the PLMN ID is displayed on the UE This indicates that the UE is in the coverage area of the ePico cell After the UE moves to a macro cell the P...

Страница 66: ...in to the APM Choose Configuration Zone Configuration and select an ePico to be maintained Then click Configure Step 2 In the displayed window select the correct version from the Version drop down list and then click Next Step 3 Choose Zone Parameter WIRELESS Configuration APCELLAC to set the differentiated billing parameters NOTE For details about how to set the parameters see Help in the corresp...

Страница 67: ...I or geographical location information the core network sends the information to the LCS server to locate the UE l AGPS locating If the ePico3801 is installed with an AGPS device the ePico3801 directly reports the geographical location to the core network after receiving the information from the AGPS device Procedure Step 1 Set the SAC of the ePico zone For details see 5 6 5 Setting the Differenti...

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Страница 69: ...ow to perform routine checks on the hardware and monitor the running status of the ePico3801 6 2 Powering On and Powering Off the ePico3801 This chapter describes how to power on and power off the ePico3801 6 3 Replacing the ePico3801 This chapter describes how to replace the ePico3801 Replacing the ePico3801 disrupts the services carried on the ePico3801 ePico3801 User Guide 6 Maintaining the ePi...

Страница 70: ...tatus of the ePico3801 l 3 1 Logging in to the ePico WebUI Select the diagnose mode in the WebUI window The WebUI provides equipment trouble diagnose wireless trouble diagnose and transfer trouble diagnose and directly displays the diagnose result l You can perform the interface tracing and real time monitoring of the ePico3801 on the Local Maintenance Terminal LMT to analyze the running status of...

Страница 71: ...ply Connect the PoE port on the PSE to the LAN port on the ePico3801 main equipment through the Ethernet cable to power on the ePico3801 Step 2 Open the LED cover and check the status of the LEDs For the normal status of the LEDs see Ports and Buttons of the ePico3801 Step 3 Perform the subsequent operation according to the status of the LEDs If Then The LEDs are in normal state The ePico3801 is r...

Страница 72: ...s chapter describes how to power off the ePico3801 Procedure Step 1 Power off the ePico3801 in different power supply modes If Then The AC power supply is available Go to Step 2 The PoE power supply is available Go to Step 3 Step 2 Remove the power cable from the AC power terminal bar to power off the ePico3801 Step 3 Remove the RJ45 connector of the Ethernet cable from the LAN port on the ePico38...

Страница 73: ... all the cables to the new ePico3801 Step 6 Power on the ePico3801 Step 7 Perform initial configuration on the ePico3801 Step 8 Perform commissioning by referring to the 4 Commissioning the ePico3801 and ensure that the corresponding services in the cell provided by the new ePico3801 are normal Step 9 Adjust the configuration of the ePico3801 as required by referring to 5 Reconfiguring the ePico38...

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Страница 75: ...Index ePico3801 User Guide Index Issue 01 2009 09 23 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd i 1 ...

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