Manual Ericsson W21

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  • Ericsson W21 - page 1

    Ericsson W21 Fixed Wireless Terminal for WCDMA/HSDPA Mobile Networks User's Guide Software Release 1.3 (R9B) ...

  • Ericsson W21 - page 2

    Ericsson W21 Fixed Wireless Terminal for WCDMA/HSDPA Mobile Networks User's Guide . Copyright © Ericsson AB 2007 – All Rights Reserved Disclaimer No part of this document may be reproduced in any form without the written permission of the copyright owner. The contents of this document are subject to revision without notice due t o continued ...

  • Ericsson W21 - page 3

    Introduction Contents 1 Introduction 4 1.1 Structure of this Guide 4 1.2 Product Overview 5 1.2.1 Indicators 6 1.2.2 Connectors 7 2 Configuration and Management 8 2.1 Access and Login to the Web User Interface 8 2.1.1 Inactivity Timeout 9 2.2 Overview 10 2.2.1 Change Default Password 11 2.2.2 Alarms 11 2.2.3 Network Information 12 2.3 Configuration ...

  • Ericsson W21 - page 4

    Introduction 2.6.1 Enable WLAN 35 2.6.2 Region 36 2.6.3 Radio Channel 36 2.6.4 Transit Power [dBm] 36 2.6.5 Scan for Wireless Networks 36 2.6.6 Network Name (SSID) 37 2.6.7 WLAN Security 38 2.6.8 Connected Devices 40 2.6.9 Whitelist 40 2.7 NAT 42 2.7.1 UPnP IGD 42 2.7.2 Application Level Gateways 43 2.7.3 Port Forwarding 43 2.8 File and Printer Sha ...

  • Ericsson W21 - page 5

    Introduction 3.2.2 Install the Wireless LAN Interface 62 3.2.3 Configure Access to the Ericsson W21 62 3.3 Sharing Settings 62 3.3.1 Check Workgroup Settings 63 3.3.2 Access a Shared Storage Device 64 3.3.3 Set Up a Connection to a Shared Storage Device 64 3.3.4 Access a Shared Printer 65 4 Troubleshooting 68 4.1 Restart the Ericsson W21 68 4.2 Res ...

  • Ericsson W21 - page 6

    Introduction 1 Introduction This chapter describes the structure of this guide and gives a brief product overview. 1.1 S tructure of this Guide This User’s Guide contains information that is needed to configure and manage the Ericsson W21 Fixed Wireless Terminal (FWT). The following chapters are included: Chapter 1 • – “Introduction” – ...

  • Ericsson W21 - page 7

    Introduction 1.2 Product Overview The Ericsson W21 is an advanced small office and home router with wireless Internet access. The key benefits of the product are: • Wireless Broadband Services at Reliable High Speed The Ericsson W21 uses WCDMA/HSDPA radio access to pro vide high- speed data capabilities to the local n etwork. • Advanced Network ...

  • Ericsson W21 - page 8

    Introduction 1.2.1 Indicators The Ericsson W21 is equipped with five status in dicators located on the front panel of the unit. A general description of each indicato r is provided in the following table (from top to bottom): T able 1 Front Panel Indicators Text Status Description Green Unlit Mains powered. Power is off. Power Connection to a UMTS ...

  • Ericsson W21 - page 9

    1.2.2 Connectors The connectors on the Ericsson W21 are positioned as show n in the following illustration: Figure 2 - Connectors' panel A description of each connector is provided in the table below : T able 2 Connectors Label Description Power input for connecting the provided power supply adapter. 10-28 VDC Button used to restore the Ericss ...

  • Ericsson W21 - page 10

    Configuration and Management 2 Configuration and Management When the physical installation of the Ericsson W21 is finishe d (as described in the Quick Installation Guide ), the internal Web User Interface (WUI) is available for configuration and status control. This chapter provides detailed information about configuration and management of the Eri ...

  • Ericsson W21 - page 11

    Configuration and Management The WUI is available in four languages; English, German, Spanish and French. Click on corresponding country flag to change to the preferred language. The preconfigured login “User name” and “Password” is both user . You are recommended to change the password, see section 2.2.1 – Change Default Password . Type ...

  • Ericsson W21 - page 12

    Configuration and Management 2.2 Overview The Overview page gives an overview of the settings on the Ericsson W21 as described below. Figure 6 - Overview page The Overview page provides the following functions: • The possibility to change password using the Change Pass word button in the upper right corner. See section 2.2.1 – Change Default Pa ...

  • Ericsson W21 - page 13

    Configuration and Management • The “NETWORK INFORMATION” section where the most important connection status information is collected. This information (among others) is also found on the Internet and LAN web pages respectively. Each page in the WUI also includes a Logout button (above the left-hand menu). 2.2.1 Change Default Password For sec ...

  • Ericsson W21 - page 14

    Configuration and Management Events that generate an alarm are such that make it impossible to send or receive data, e.g. SIM card missing. If there are no alarms currently detected the text " No alarms detected " is displayed. If an alarm is detected, the Alarm indicator on the Ericsson W21 front panel is lit (red), and the corresponding ...

  • Ericsson W21 - page 15

    Configuration and Management T able 4 - Network information (Intern et) description Text/symbol Description The mobile network (UMTS or GSM) signal quality available at the Ericsson W21 location. This s ignal quality affects the performance of the unit. If two or more bars are green, the connection is usually acceptable. The IP address automaticall ...

  • Ericsson W21 - page 16

    Configuration and Management 2.3 Configuration Wizard The Configuration Wizard guides you step by step through the basic setup of the mobile network connection and optionally for the Wireless LAN access point. Note: Throughout the wizard web-pages, only enter details that you have received from your service provi der and leave other fields empty. C ...

  • Ericsson W21 - page 17

    Configuration and Management Normally, you have to enter the PIN to activate the Ericsson W21 data services. In some cases however, authentication is not required and it is possible to use the services without entering any PIN. Type the PIN in the “PIN” field. Thereafter, you can select the “Remem ber my PIN” check box. This makes SIM authe ...

  • Ericsson W21 - page 18

    Configuration and Management Note: If you have not received any PPP Aut hentication details from your service provider, leave the fields empty and click Next . Figure 10 - Internet Acce ss: PPP User Authentication page Type the authentication details you have received in the “PPP user name” and “PPP password” fields. Click Next to proceed. ...

  • Ericsson W21 - page 19

    Configuration and Management Figure 1 1 - Wireless LAN: WLAN Access Point page To enable connection of one or more wireless devices to the Ericsson W21, select the “Enable WLAN” check box. Click Next to proceed. Note: The WLAN interface will not be activated until the complete configuration details are entered. If you are not going to set up an ...

  • Ericsson W21 - page 20

    Configuration and Management To confirm the settings and close the Configuration Wizard, click the Finish button. You can use the Previous button to go back to previous pages and check your settings and/or make changes. If you click the Cancel button, the Configuration Wizard closes and no changes are saved. 2.3.2.2 Region To make sure the Ericsson ...

  • Ericsson W21 - page 21

    Configuration and Management Figure 14 - Wireless LA N: Radio Channel page Select either “Auto” (recommended) or a specific channel number from the “Radio channel” drop-down list. Click Next to proceed. 2.3.2.4 Network Name All devices on the local wireless network share a common Service Set IDentifier (SSID) or network name. This name is r ...

  • Ericsson W21 - page 22

    Configuration and Management Figure 15 - Wireless LAN: Network Name (SSID) p age The network name is case-sensitive (distinguish between uppercase and lowercase letters) and can be changed to any combination of numbers (0 – 9), letters (a – z), and hyphens (-) with a maximum length of 32 characters. If the SSID broadcast option is enabled, your ...

  • Ericsson W21 - page 23

    Configuration and Management Figure 16 - Wireless LA N: Authentication p age Select one of the authentication methods from the “Authentication” drop- down list. The available options are as follows: • None ; f you select “None” as authentication method no client configuration is needed but be aware of that the WLAN will now be open withou ...

  • Ericsson W21 - page 24

    Configuration and Management 2.3.3.1 None If you select “None”, the last page of the wizard, where you can review and confirm your settings, is displayed: Figure 17 - Configuration Wizard Confirm ation page To confirm the settings and close the Configuration Wizard, click the Finish button. You can use the Previous button to go back to previous ...

  • Ericsson W21 - page 25

    Configuration and Management Figure 18 – Wireless LA N: WEP (64 BIT) p age Figure 19 – Wireless LA N: WEP (128 BIT) p age Enter an encryption key in the “Encryption key:” field. Click Next to proceed. 2.3.3.3 WPA/WPA2 Passphrase WPA and WPA2 authentication and encryption require a passphrase. Each device on your wireless network has to be c ...

  • Ericsson W21 - page 26

    Configuration and Management A WPA or WPA2 passphrase is case sensitive and consists of between 8 and 63 optional characters. It is recommended that the passphrase contains at least 20 characters. Figure 20 – Wireless LA N: WP A page Figure 21 – Wireless LA N: WP A2 page Type a unique passphrase in the “Passphrase” field. Note: Avoid using ...

  • Ericsson W21 - page 27

    Configuration and Management 2.3.4 Configuration Wizard Confirmation On the last page of the Configuration Wizard, the Internet and Wireless LAN settings are displayed: Figure 22 - Configuration Wizard Confirm ation page To confirm the settings and close the Configuration Wizard, click the Finish button. You can use the Previous button to go back t ...

  • Ericsson W21 - page 28

    Configuration and Management 2.4 Internet The Internet web page includes status information and settings for the connection to the mobile network: Figure 23 - Internet page 2.4.1 Mobile Network Connection Det ails The Ericsson W21 connects to the UMTS (3G) network when it is available and uses the GSM/GPRS/EDGE (2G) network as fall-back. The follow ...

  • Ericsson W21 - page 29

    Configuration and Management T able 6 - Mobile Network connection details Text/symbol Description The mobile network (UMTS or GSM) signal quality available at the Ericsson W21 location. This s ignal quality affects the performance of the unit. If two or more bars are green, the connection is usually acceptable. The Internet access status, either Li ...

  • Ericsson W21 - page 30

    Configuration and Management packets. The number of invalid data packets. Error The number of packets lost due to too many incoming data packets. Overruns The number of dropped data packets. Dropped Note: The data size and packet counters have the upper limits of 4 GiB and 2 32 packets (more than 4 billion packets). When these limits have been reac ...

  • Ericsson W21 - page 31

    Configuration and Management configuration, fill in the appropriate fields and click Apply to save the settings. Note: Only enter details you have rece ived from your service provider and leave other fields empty. 2.4.4 Unblock SIM Card If three attempts have been made with an incorrect PIN, the SIM card is blocked and the Unblock SIM button is dis ...

  • Ericsson W21 - page 32

    Configuration and Management Figure 25 - Change PIN page Type the current and new PIN in the corresponding fields and click OK to save the settings. 30 1/1551-CRH 102 167 Uen Rev D 2007-11-16 ...

  • Ericsson W21 - page 33

    Configuration and Management 2.5 LAN The LAN (Local Area Network) page includes settings for the connection between the Ericsson W21 and other local devices, traffic statistics as w ell as status on the physical LAN ports. Figure 26 - LAN page 2.5.1 LAN IP Address The LAN IP address and subnet mask of the Ericsson W21 is used for connections to cli ...

  • Ericsson W21 - page 34

    Configuration and Management T able 9 - LAN p age description Text Description The LAN IP address of the Ericsson W21. IP address The subnet mask, which determines the range of IP addresses on the subnet. Subnet mask The LAN IP address and subnet mask can be changed, but before you do this, consider the following: • Make sure that the new address ...

  • Ericsson W21 - page 35

    Configuration and Management T able 10 - DHCP Server configuration options Text Description Select this checkbox to enable the DHCP server. Enable DHCP server Note: If you already have a DHCP server on your network, you should disable this feature in the Ericsson W21. The IP addresses that can be assigned to LAN/WLAN clients are collected from a pr ...

  • Ericsson W21 - page 36

    Configuration and Management 2.5.3 T raffic St atistics The following information is displayed in the “TRAFFIC STATISTICS” section on the LAN page: T able 1 1 - LAN T raffic S tatistics description Text Description The total size (and number) of transmitted data packets on the LAN. Transmitted The total size (and number) of received data packet ...

  • Ericsson W21 - page 37

    Configuration and Management 2.6 Wireless LAN A Wireless LAN (WLAN) is a local network that communicates through wireless connections. The Ericsson W21 can be used as a WLAN Access Point ( AP), connecting to wireless PCs according to the IEEE standard 802.11b/g, providing Internet and LAN access. The WLAN settings are displayed on the Wireless LAN ...

  • Ericsson W21 - page 38

    Configuration and Management 2.6.2 Region Wireless devices are thoroughly regulated and the countries have slightly different regulations. Therefore, the geographical region where the Ericsson W21 is used must be stated to make sure the correct radio frequencies a re used when transmitting data. Select the geographical region in which you reside fr ...

  • Ericsson W21 - page 39

    Configuration and Management Figure 29 - Scan for wireless networks p age The list displays the following information about wireless networks that ar e nearby: T able 12 - Scan for wireless networks description Text Description The MAC address of the access point for the WLAN. MAC Address The network name (SSID) of the WLAN. Network Name The radio ...

  • Ericsson W21 - page 40

    Configuration and Management T able 13 - Network name description Text Description The network name (SSID) of the WLAN. Network name (SSID) The network name is case-sensitive (distinguish between uppercase and lowercase letters) and can be changed to any combination of numbers (0-9), letters (a-z), and hyphens (-) with a maximum length of 32 charac ...

  • Ericsson W21 - page 41

    Configuration and Management 2.6.7.1 None If you select “None” as authentication method no client configuration is needed but be aware of that the WLAN will now be open without any kind of security. For example, it is now possible for anyone with a computer and a wireless interface card to connect to the Ericsson W21 at any time and having acce ...

  • Ericsson W21 - page 42

    Configuration and Management characters. It is recommended that the passphrase contains at least 20 characters. Enter a passphrase in the “Passphrase / Key” field and click Apply to s ave the settings. Note: Avoid using special characters (such as :, “ and ¤ ) when entering a passphrase. 2.6.8 Connected Devices The “CONNECTED DEVICES” li ...

  • Ericsson W21 - page 43

    Configuration and Management 2.6.9.2 Find a Wireless Client MAC Address The MAC address for a WLAN adapter is normally found on the product label. For internal wireless PCI cards running on Windows platform, the command ipconfig /all (run from a Command Prompt window) can be used to display the MAC address (displayed as “Physical Address” again ...

  • Ericsson W21 - page 44

    Configuration and Management 2.7 NA T The Ericsson W21 includes a NAT (Network Address Translation) service. With this service several computers on a LAN/WLAN can share the same Internet connection using a single public IP addr ess. Devices on the LAN/WLAN use dedicated private IP addresses, which cannot be used on the Internet. When a computer on ...

  • Ericsson W21 - page 45

    Configuration and Management applications and the local network. When UPnP IGD is enabled, programs like MSN Messenger ® and most network enabled games are allowed to pass the NAT service. UPnP IGD is enabled by default, but if you want to disable the feature, clear the “Enable UPnP IGD” check box and click Apply to save the setting. 2.7.2 App ...

  • Ericsson W21 - page 46

    Configuration and Management allowed. For more information on public and private IP addresses, contact your service provider. When a computer on the Internet sends data to the public IP address o f Ericsson W21, it needs to know what to do with the data. A port forwarding rule tells the Ericsson W21 which computer on the local are a network to send ...

  • Ericsson W21 - page 47

    Configuration and Management Select a “Protocol” from the drop-down list and type the appropriate values in “NAT Port”, “Server IP”, and “Server Port” fields and click Apply to sa ve the settings. Below are some examples of common applications and corresponding Server Port they use for network access. The NAT port has often the same ...

  • Ericsson W21 - page 48

    Configuration and Management Figure 32 - Port forwarding example 2.7.3.3 Edit Port Forwarding Rule To edit a port forwarding rule, click Edit next to the rule to edit. The Edit Port forwarding page is displayed: Figure 33 - Edit Port forwarding page Change one or more value(s) in the “Protocol”, “NAT Port”, “Server IP”, or “Server Por ...

  • Ericsson W21 - page 49

    Configuration and Management 2.8 File and Printer Sharing The Ericsson W21 supports local ne twork storage and printer sharing. It is possible to have two USB storage devices or one USB storage device and one USB printer connected to the Ericsson W21 at the same time. If an external hub is connected, the Ericsson W21 supports connection of up t o t ...

  • Ericsson W21 - page 50

    Configuration and Management device. The Ericsson W21 then makes the smb service use the new configuration, thereby sharing the USB device via the SMB/CIFS protocol. This process is totally automatic and there are not configuration parameters that can be set, other than renaming the shared resources. The Ericsson W21 uses a relatively low powered p ...

  • Ericsson W21 - page 51

    Configuration and Management The file system on a shared partition needs to be of a support ed type; otherwise the automatic mounting of the device will not work. Currently the supported types are: • FAT ; Microsoft legacy file system from MS-DOS with 8.3 character filename • FAT32 ; Microsoft Windows 95 file system based on FAT but with long f ...

  • Ericsson W21 - page 52

    Configuration and Management T able 18 - Shared printer description Text Description The manufacturer’s name of the printer. Printer The name of the shared printer used when accessing it from a PC on the LAN/WLAN. Share name To give a network printer a specific name, type a name in the “Share name” field and click Apply to save the setting. N ...

  • Ericsson W21 - page 53

    Configuration and Management 2.9 System The System page includes system information and management functions, used to update and restore the Ericsson W21. Figure 35 - System p age 1/1551-CRH 102 167 Uen Rev D 2007-11-16 51 ...

  • Ericsson W21 - page 54

    Configuration and Management 2.9.1 Basic System Information The table on top of the page includes basic syst em informati on about the Ericsson W21. The following information is displayed: T able 19 – Basic System Information Text Description The product name. Product The product identification. Product Id: The unique serial number of the unit. S ...

  • Ericsson W21 - page 55

    Configuration and Management 2.9.2.2 Restore from Backup File If you wish to revert to previous settings, you can perform a configuration restore from a previously stored backup file. To restore from a configuration file, click the Bro w se… button in the “CONFIGURATION BACKUP AND RESTORE” section on the Sy stem page to locate the configurati ...

  • Ericsson W21 - page 56

    Configuration and Management When the restart is completed you have make a new login to the WUI. Type http://192.168.1.1 in the Address (URL) field to display the User login page. 2.9.4 Sof tw are Up date New Ericsson W21 software versions can be either automatically or manually installed. 2.9.4.1 Automatic Software Installation If your service pro ...

  • Ericsson W21 - page 57

    Configuration and Management Click For a description of the updat e please follow this link to get information about the software version or click Yes to install the new version. When you click Yes the update process is initiated and the following pag e is displayed: Figure 39 - Sof tware Update initiated page The information on this page is update ...

  • Ericsson W21 - page 58

    Configuration and Management 2.9.5 Factory Reset The Ericsson W21 configuration can be reset to its factory default setting s from the System page. Note: If the WUI is not accessible, a reset to factory default settings can also be done using the Reset button on the unit. See sectio n 4.2 – Reset the Ericsson W21 to Factory Default Settin gs . To ...

  • Ericsson W21 - page 59

    Configuration and Management 2.10 Event Log On the Event Log page, a list of the events that has been sent to the Ericsson W21 log is displayed: Figure 42 - Event Log page Each row in the log list displays the time and date when an event was reported to the log, the type of the event, and a brief statement indicating its cause. Note: If the actual ...

  • Ericsson W21 - page 60

    Configuration and Management The system logging information is written to 3 files in the system and these files are rotated in a circular fashion. The files ar e not saved to flash memory and will be lost when rebooti ng the system or when power is disconnected. To view only a selection of the log events in the list, select a filter level from the ...

  • Ericsson W21 - page 61

    PC Configuration 3 PC Configuration The connection to the Ericsson W21 may require specific PC configuration. This chapter includes instructions on how to configure Internet Protocol (IP) settings, establish wireless conne ction(s) with the Ericsson W21 and access a shared network printer. The descriptio ns include examples from Windows XP and 2000 ...

  • Ericsson W21 - page 62

    PC Configuration 4. Select Internet Protocol TCP/IP and ensure that the check box beside the text is selected. Click Properties . 5. In the Internet Protocol (TCP/IP) Properties window, select Obtain an IP address automatically and Obtain DNS server address automatically. 6. Click OK twice to confirm your changes and close the windows, and then clo ...

  • Ericsson W21 - page 63

    PC Configuration 10. In the Network and Dial-up Connections window, right-click the Local Area Connection icon, and then click Properties . 11. Select Internet Protocol TCP/IP and ensure that the check box beside the text is selected. Click Properties . 12. In the Internet Protocol (TCP/IP) Properties window, select Obtain an IP address automatical ...

  • Ericsson W21 - page 64

    PC Configuration 3.2.2 Inst all the Wireless LAN Interface Each PC on your Wireless LAN must be fitted with a Wireless LAN interface, such as a wireless network card. You also have to install the corresponding driver files for your particular Wireless LAN interface on your PC. The driver files and instructions on how to install them are provided to ...

  • Ericsson W21 - page 65

    PC Configuration In some cases, you have to make sure that your PC belongs to the same workgroup as the Ericsson W21. Follow the instructions in the next section to check the workgroup on your PC. 3.3.1 Check Workgroup Settings The following sections include instructions on ho w to check the workgroup settings on a PC using Windows XP or 2000. 3.3. ...

  • Ericsson W21 - page 66

    PC Configuration 2. Double-click the System icon. The System Properties window is displayed. 3. On the Network Identification tab, click Properties . The Identification Changes window is displayed. 4. Make sure that Workgroup is selected in the Member of section and that the name of the workgroup is exactly the same as on the Ericsson W21 Sharing p ...

  • Ericsson W21 - page 67

    PC Configuration 1. In the Windows task bar, click the Start button, and then click My Computer . The My Computer window is displayed. 2. From the Tools menu, select Map Network Drive… . The My Network Drive window is displayed. 3. Select a drive that is not already used from the Drive drop-down menu. 4. In the Folder field, type <host_name& ...

  • Ericsson W21 - page 68

    PC Configuration The Ericsson W21 supports two protocols for printing: Samba and RAW. The protocol that is used may vary depending on printer and manufacturer. It also affects how to access the printer via the Ericsson W21. The following sections include instru ctions on how to access a shared printer from a PC using Windows XP or 2000. 3.3.4.1 Pri ...

  • Ericsson W21 - page 69

    PC Configuration 3. Select Add a printer . The Add Printer Wizard appears. Click Next> to proceed. 4. In the Local or Network Printer window, select Local printer attached to this computer and click Next> . 5. In the Select a Printer Port window, check Create a new port and from the Type of port drop-down list select Standard TCP/IP Port . Cl ...

  • Ericsson W21 - page 70

    Troubleshooting 4 Troubleshooting This chapter describes how to solve a number of issues that could occur during installation, configuration, and use of the Ericsson W21. More information is available at www.ericsson.com/fwt . Before you try any of the methods described in this chapter, make sure that the connected cables are securely inserted and ...

  • Ericsson W21 - page 71

    Troubleshooting 2. Use a tip of a pen to press the Reset button while reconnecting the power cable. Keep the Reset button pressed for at least 20 seconds. 3. The Ericsson W21 restarts and comes online with the factory default settings. Note: A reset to factory default configuration cannot be undone. If you reset the Ericsson W21 to default configur ...

  • Ericsson W21 - page 72

    Troubleshooting 4.4 No Internet Access If you cannot access the Internet from any of your local devices, take the following actions to identify and solve the problem: • On the Internet page, make sure that the Link status is Up and that an IP address is defined. • Make sure that the GSM/UMTS antenna is properly connected and tightened to the Er ...

  • Ericsson W21 - page 73

    Troubleshooting • On the Internet page, verify that the mobile network signal quality indicator displays at least two bars. If not, try to move the Ericsson W21 or attach an external antenna. 4.6 No Access to a Certain Internet Application If you cannot access a certain Internet application or specific type of data, take the following actions to ...

  • Ericsson W21 - page 74

    Troubleshooting • Move the Ericsson W21 to another location. Make sure that the mobile network signal is still acceptable bef ore finalizing the installation. • Check that the “Transmit power [dBm]” on the Wireless LAN page is configured in accordance with your requirements on wireless network coverage. The maximum transmit power value is ? ...

  • Ericsson W21 - page 75

    Troubleshooting automatically ( Auto ) or manually change the radio channel currently used. • Keep the Ericsson W21 away from electrical devices that disturb the radio signals, for example microwave ovens. 4.9 Slow or Intermittent Wireless LAN Connection If your wireless connections to the local network are unacceptable slow o r regularly droppin ...

  • Ericsson W21 - page 76

    Jan 1 00:07:34 FWT user.notice kernel: Type: Direct- A ccess ANSI SCSI revision: 00 Jan 1 00:07:35 FWT user.notice kernel: SCSI device sda: 4013056 512-byte hdwr sectors (2055 MB) Jan 1 00:07:35 FWT user.notice kernel: sda: assuming Write Enabled Jan 1 00:07:35 FWT user.err kernel: sda: assuming drive cache: write through Jan 1 00:07:35 FWT user.no ...

  • Ericsson W21 - page 77

    Glossary Glossary 802.11b An IEEE standard for a wireless network that operates at 2.4 GHz with rates up to 11 Mbps. Association Describes the establishment and maintenance of a wireless link between devices. (If security is enabled, the devices cannot do anything but exchange security credentials with this link). See Authentication. 802.11g An IEE ...

  • Ericsson W21 - page 78

    Glossary network devices with a variety of information, such as IP addresses, required for their operation. GPRS – General Packet Radio Service A packet-based mobile communications system building on GSM. Advantages over standard GSM include higher data transmission speeds, more efficient use of radio resources and continuous connection to the ne ...

  • Ericsson W21 - page 79

    Glossary serial number unique to every mobile device. The IMEI number is used by the mobile network to identify valid devices. IP – Internet Protocol A part of a suite of protocols that effectively defines the Internet as we know it. Specifies addressing and control information for routing data packets over networks. IP address The address of a h ...

  • Ericsson W21 - page 80

    Glossary used to carry IP (and other protocol) data between the service provider and your computer. Private IP Address A private IP Address is typically assigned to a client on a LAN (Local Area Network) and is not used outside the LAN. Private IP addresses are typically used when multiple computers share the same Internet connection. Protocol A se ...

  • Ericsson W21 - page 81

    Glossary TCP is responsible for dividing data up into packets for delivery and reassembling them at the destination. IP is responsible f or delivering the packets from source to destination. When TCP and IP are bundled with higher-level applications such as HTTP, FTP, Telnet, and so on, TCP/IP refers to this whole suite of protocols. TFTP – Trivi ...

  • Ericsson W21 - page 82

    Glossary stronger data encryption method; TKIP. WPA data encryption is based on a WPA master key. The master key is derived from the passphrase and the network name (SSID) of the device. WPA2 – Wi-Fi Protected Access 2 An enhanced version of WPA. For data encryption, WPA2 uses AES instead of TKIP. WUI – Web User Interface In Ericsson W21 the WU ...

  • Ericsson W21 - page 83

    ...

  • Ericsson W21 - page 84

    Ericsson Enterprise AB © Ericsson AB 2007 - All Rights Reserved www.ericsson.com 1/1551-CRH 102 167 Uen Rev D 2007-11-16 ...

Manufacturer Ericsson Category Network Router

Documents that we receive from a manufacturer of a Ericsson W21 can be divided into several groups. They are, among others:
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All of them are important, but the most important information from the point of view of use of the device are in the user manual Ericsson W21.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Ericsson W21, service manual, brief instructions and user manuals Ericsson W21. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Ericsson W21.

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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Ericsson W21 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Ericsson W21.

A complete Ericsson manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Ericsson W21 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Ericsson W21, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Ericsson W21, that we can find in the current document
3. Tips how to use the basic functions of the device Ericsson W21 - which should help us in our first steps of using Ericsson W21
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5. FAQ - Frequently Asked Questions
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