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Ericsson W20 User Manual Download Page 69

Trouble-Shooting

1/1551-CRH 102 167 Uen Rev C 2007-04-19

67

4 Trouble-Shooting

This chapter describes how to solve a number of issues that could occur
during installation, configuration, and use of the Ericsson W20/21. 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 that the

Power

indicator on

the Ericsson W20/21 is green.

If none of the suggested methods solve your problem, you are
recommended to:

1. Restart the Ericsson W20/21.

2. Reset the Ericsson W20/21 to factory default configuration and re-

install the unit.

3. Contact your service provider.

To restart the Ericsson W20/21, click

Restart

on the

System

web page. If

you cannot access the Ericsson W20/21 web pages, remove the power
cable to disconnect the Ericsson W20/21 from power and wait a moment
before reconnecting the cable.

To reset the settings to factory default, disconnect the Ericsson W20/21
from power by removing the power cable. Then 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.

The factory default configuration contains the original settings of your
Ericsson W20/21. When you install your Ericsson W20/21 and access the
web pages for the first time, the configuration file contains the factory
default configuration.

Note:

A reset to factory default configuration cannot be undone. If you

reset the Ericsson W20/21 to default configuration, all your
previous configuration changes are replaced. If you have
previously changed the user name and password, the

User Login

page will be displayed. You have to login to the web pages with the
default user name and password (

user

in both fields).

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Summary of Contents for W20

Page 1: ...Ericsson W20 21 Fixed Wireless Terminal for WCDMA HSDPA Mobile Networks User s Guide ...

Page 2: ...on shall have no liability for any error or damage of any kind resulting from the use of this document Trademark List Firefox Firefox is a registered trademark of Mozilla Foundation Internet Explorer Internet Explorer is a registered trademark of Microsoft Corporation MSN Messenger MSN Messenger is a registered trademark of Microsoft Corporation Opera Opera is a registered trademark of Opera Softw...

Page 3: ...sword 9 2 2 2 Alarms 10 2 2 3 Network Information 10 2 3 Configuration Wizard 11 2 3 1 Internet Access 12 2 3 2 Wireless LAN Access 15 2 4 Internet 24 2 4 1 Traffic Statistics 26 2 4 2 Authentication 27 2 5 LAN 29 2 5 1 DHCP Server 30 2 5 2 Traffic Statistics 31 2 5 3 Port Status 32 2 6 Wireless LAN 32 2 6 1 Connected Devices 36 2 6 2 Whitelist 36 2 7 NAT 37 2 7 1 UPnP IGD 37 2 7 2 Application Lev...

Page 4: ...1 3 2 3 Configuring PC Access to the Ericsson W20 21 52 3 3 Sharing Settings 52 3 3 1 Checking Workgroup Settings 53 3 3 2 Accessing a Shared USB Mass Storage Device 54 3 3 3 Setting Up a Connection to a Storage Device 54 3 3 4 Accessing a Shared Printer 55 4 Trouble Shooting 67 4 1 No Access to Ericsson W20 21 Web Pages 68 4 2 No Internet Access 68 4 3 Slow or Intermittent Internet Connection 69 ...

Page 5: ...n provides information about this guide and gives a brief product overview Chapter 2 Configuration and Management provides detailed information about how to perform configuration and management of the Ericsson W20 21 Chapter 3 PC Configuration gives instructions for configuring your computers to work with the Ericsson W20 21 Chapter 4 Trouble Shooting tells you how to solve a number of issues that...

Page 6: ...he Ericsson W20 21 supports an advanced local network setup It provides IP routing Ethernet switching DHCP service and NAT File and Printer Sharing Network storage and printing are supported through USB connection of up to two mass storage devices and one printer at the same time Local Wireless Access with High level Security The Ericsson W20 21 is a WLAN access point for the wireless local networ...

Page 7: ...on No connection to the mobile network Internet Green Unlit Connection to Internet established No Internet connection Wireless LAN Green Unlit The Wireless LAN is active The Wireless LAN is inactive Alarm Red Unlit Various error conditions specified on the W20 21 Overview web page No error The Ethernet LAN connectors LAN1 LAN4 on the connectors panel have two built in indicators each The left indi...

Page 8: ...default settings The following procedure resets all configurable values back to factory default settings including the Ericsson W20 21 login user name and password 1 Disconnect the power cable from the W20 21 unit 2 Press and hold the Reset button with the tip of a pen and then reconnect the power cable Keep the button pressed for at least 20 seconds 3 The Ericsson W20 21 restarts and comes online...

Page 9: ...h German Spanish and French Click on corresponding country flag on the left hand in the web user interface to change to preferred language The Ericsson W20 21 supports the following web browsers Internet Explorer 5 0 or higher Safari 1 3 or higher Firefox 1 0 or higher Opera 8 or higher Note The web page pictures in this document have W20 headings These are also valid for W21 since W20 and W21 sha...

Page 10: ...gure 3 User Login page The default login user name and password are both user You are recommended to change the password see section 2 2 1 Changing Password Type user in both the User name and Password fields Click Log In The Overview page is displayed Figure 4 Overview page ...

Page 11: ...age The Overview page includes the possibility to change password the entrance to the Configuration Wizard see section 2 3 Configuration Wizard alarm information and basic network information 2 2 1 Changing Password The default Ericsson W20 21 login password is user You are recommended to change the default password 1 Click Change Password on the Overview page The Change Password page is displayed...

Page 12: ...rrectly Invalid SIM card inserted The inserted SIM card is not valid No PIN code entered No PIN code has been entered to activate the Internet service Incorrect PIN code entered The entered PIN code is not the correct one SIM card blocked The SIM card is blocked The PUK is required to unblock the SIM card SIM card permanently blocked The SIM card cannot be unblocked A new SIM card is required Alar...

Page 13: ...he name of or other reference to the mobile network operator Network registration The current mobile network registration status Not registered not searching Registered home network Searching Registration denied Unknown Roaming Limited Service The LAN Local Area Network section includes information about the following item W20 21 IP Address The LAN IP address of the Ericsson W20 21 2 3 Configurati...

Page 14: ...vice provider and leave other fields empty SIM Authentication The service provider provides you with a SIM card This SIM card contains information about the subscription and is normally protected by a PIN Personal Identification Number and a PUK Personal Unblock Key code Note Emergency calls i e 112 or 911 can always be made even without a SIM card or the correct PIN code Normally you have to ente...

Page 15: ...tart Click Next to proceed Unblock SIM card If three attempts have been made with an incorrect PIN the SIM card is blocked The PUK is required to unblock the card Click Unblock SIM The Unblock SIM page is displayed Figure 7 Unblock SIM page Type the PUK in the PUK field and type a new PIN in the New PIN and Retype new PIN fields Click OK The Internet page is displayed Go to the Overview page and c...

Page 16: ...fferent APNs for the GSM 2G and UMTS 3G networks may be required Figure 8 Internet Access APN page Type the APN s in the APN 2G and APN 3G fields on the Internet Access APN page Click Next to proceed PPP User Authentication The PPP Point to Point Protocol Internet mode may require individual user authentication Note If you have not received any PPP Authentication details from your service provider...

Page 17: ... the Configuration Wizard includes configuration of the Wireless LAN WLAN A Wireless LAN is a local network that communicates through wireless connections Note The wireless setup typically requires configuration of both the Ericsson W20 21 and the wireless clients For more information about configuring wireless clients see 3 2 Wireless LAN Settings Access Point The Ericsson W20 21 is a WLAN Access...

Page 18: ... box on the Wireless LAN WLAN Access Point page and click Next to proceed The Wireless LAN Region page is displayed see Figure 12 Note The WLAN interface will not be activated until the complete configuration details are entered If you are not going to set up any Wireless LAN just click Next on the Wireless LAN WLAN Access Point page The last page of the wizard where you can review and confirm you...

Page 19: ...the settings by clicking Finish Region To make sure the Ericsson W20 21 operates on correct radio frequencies according to local regulations you have to state in which region you reside After this you cannot select any radio channel that would be against the regulations Figure 12 Wireless LAN Region page ...

Page 20: ...ailable channels yourself or let the Ericsson W20 21 automatically select a channel Figure 13 Wireless LAN Radio Channel page Select either Auto recommended or a channel number from the Radio channel list on the Wireless LAN Radio Channel page Click Next to proceed Network Name All devices on the local wireless network share a common Service Set IDentifier SSID or network name This name is require...

Page 21: ...eless LAN Network Name SSID page If the SSID broadcast option is enabled your local wireless device s will find the network name when scanning the air If the option is disabled the network name is hidden and has to be manually provided to the wireless device s To disable network name broadcast clear the Enable SSID broadcast check box on the Wireless LAN Network Name SSID page Click Next to procee...

Page 22: ... encryption uses the Temporal Key Integrity Protocol TKIP while WPA2 encryption follows the Advanced Encryption Standard AES AES offers a higher level of security and is approved for sensitive corporate and government data transmission Figure 15 Wireless LAN Authentication page Note Make sure that the operating system s and Wireless LAN interface s of the wireless client s support the selected aut...

Page 23: ...reless LAN WPA page is displayed see Figure 19 If you select WPA2 the Wireless LAN WPA2 is displayed see Figure 20 WEP Encryption Key The WEP encrypted data can only be sent and received by users with access to a private encryption key This means that each device on your wireless network has to be configured with the same key as the Ericsson W20 21 in order to allow encrypted data transmissions A ...

Page 24: ... CRH 102 167 Uen Rev C 2007 04 19 Figure 17 Wireless LAN WEP 64 BIT page Figure 18 Wireless LAN WEP 128 BIT page Fill in the Encryption key field on the Wireless LAN WEP 64 BIT page or the Wireless LAN WEP 128 BIT page Click Next to proceed ...

Page 25: ...tication and encryption require a passphrase Each device on your wireless network has to be configured with the same passphrase as the Ericsson W20 21 The encryption master key is derived from the passphrase and the network name SSID of the device Figure 19 Wireless LAN WPA page Figure 20 Wireless LAN WPA2 page ...

Page 26: ...passphrase contains at least 20 characters Click Next to proceed Confirming Settings On the last page of the Configuration Wizard the Internet and Wireless LAN settings are displayed Figure 21 Confirm page Confirm the settings by clicking Finish 2 4 Internet The Ericsson W20 21 connects to the Internet through mobile radio communication using the UMTS 3G network If the UMTS network is not availabl...

Page 27: ...k UMTS or GSM signal quality available at the Ericsson W20 21 location This signal quality affects the performance of the unit If two or more bars are green the connection is usually acceptable Link Status The Internet access status either Up or Down If the link is up connection is established Mode The protocol used for the Internet data traffic PPP Point to Point Protocol ...

Page 28: ...y assigned to the Ericsson W20 21 by the mobile network DNS 1 The IP address to the primary DNS server DNS 2 The IP address to the secondary DNS server 2 4 1 Traffic Statistics The Traffic Statistics section includes information about the following items Transmitted The total size and number of transmitted data packets Received The total size and number of received data packets Error The number of...

Page 29: ...o the GSM Internet access point on the service provider s network The APN usually has the format name service_provider country PPP user name The Point to Point Protocol Internet mode user name which is used for user authentication PPP password The Point to Point Protocol Internet mode password which is used for user authentication If you have not used the Configuration Wizard for configuration of ...

Page 30: ... Click OK Note If ten attempts have been made with an incorrect PUK the SIM card is permanently blocked and a new SIM card is required Changing Authentication Details If SIM authentication is verified you cannot edit the PIN field To change PIN click Change PIN The Change PIN page is displayed Figure 24 Change PIN page Type the current and new PIN in the corresponding fields and click OK ...

Page 31: ... type the new value in the corresponding field on the Internet page and click Apply 2 5 LAN The LAN Local Area Network configuration includes the details of the connections between the Ericsson W20 21 and other local devices Figure 25 LAN page The following information and configuration options are displayed on top of the LAN page ...

Page 32: ...net mask type the new value in the corresponding field and click Apply to save the settings Note If you change the LAN IP address while connected to the Ericsson W20 21 web pages through a web browser you will be disconnected You have to redirect the web browser to the new address in order to confirm the new settings Type the new LAN IP address in the Address URL field and press the key 2 5 1 DHCP...

Page 33: ...server IP address range has to be on the same subnet as the Ericsson W20 21 LAN IP address The IP address range must not include the Ericsson W20 21 IP address If port forwarding is configured those settings have to be removed before changing the DHCP server IP address range For information see section 2 7 3 Port Forwarding In the Lease time sec field enter the time in seconds you want the LAN dev...

Page 34: ...viding wireless client s with Internet and LAN access The WLAN settings are displayed on the Wireless LAN web page To ensure the security of your Wireless LAN you are recommended to change the default settings Figure 26 Wireless LAN page To enable the Ericsson W20 21 AP features providing the local wireless device s with Internet and LAN access select the Enable WLAN check box on the Wireless LAN ...

Page 35: ... 1 13 Transmit power dBm The radio transmission level that determines the signal strength 0 20 Default is 20 To make sure the Ericsson W20 21 operates on correct radio frequencies according to local regulations you have to state in which region you reside After this you cannot select any radio channel which would be against the local regulations Select your country domain from the Region list on t...

Page 36: ...o establish connection between the Ericsson W20 21 and other wireless device s and to distinguish the wireless network from any other s that may be in use nearby It ensures that only devices configured with the same network name as the one set on the Ericsson W20 21 can obtain access to it The following settings concerning the network name are displayed and can be modified on the Wireless LAN page...

Page 37: ... encrypted data transmissions WPA and WPA2 WPA Wi Fi Protected Access and its successor WPA2 are considered to be the most reliable security options WPA encryption uses the Temporal Key Integrity Protocol TKIP while WPA2 encryption follows the Advanced Encryption Standard AES AES offers a higher level of security and is approved for sensitive corporate and government data transmission WPA and WPA2...

Page 38: ...For security reasons you are recommended to use a passphrase that contains at least 20 characters The passphrase is case sensitive Click Apply to save the settings 2 6 1 Connected Devices The Connected Devices list includes the MAC Media Access Control addresses of all wireless devices currently connected to the Ericsson W20 21 To find out about the MAC address of a PC using Microsoft Windows open...

Page 39: ...s not possible to access a local device directly from the Internet Figure 28 NAT page 2 7 1 UPnP IGD The Ericsson W20 21 supports the Universal Plug and Play UPnP Internet Gateway Device IGD standard UPnP IGD is used to provide automatic port forwarding allowing communication between certain Internet applications and the local network When UPnP IGD is enabled programs like MSN Messenger and most n...

Page 40: ... application does not require additional configuration The supported ALGs can be enabled and disabled individually To disable an ALG clear the corresponding check box on the NAT page and click Apply 2 7 3 Port Forwarding Port forwarding is used to allow an external user to access a service residing on a server connected to the LAN to cross NAT border It enables access to servers on the LAN from In...

Page 41: ...rver IP and Server Port fields and click Apply When one or more port forwarding instances are added the following details are displayed for each instance in the Port Forwarding table on the NAT page Protocol The data traffic protocol UDP or TCP NAT Port The NAT port number on Ericsson W20 21 that the data traffic is allowed to be transported on Server IP The IP address of the destination unit Serv...

Page 42: ...er port 8080 and the Server IP address 192 168 1 101 Figure 30 Example Port forwarding Below are some examples of common applications and corresponding Server Port they use for network access The NAT port has often the same value as the Server value Exceptions are made when the same applications are used on many clients on the LAN WLAN where each Server IP value needs to be unique and differ from ...

Page 43: ...t range Editing an Instance To edit a port forwarding instance click Edit in the Port Forwarding section on the NAT page The Edit Portforwarding Instance page is displayed To delete a port forwarding instance click Delete in the Port Forwarding section on the NAT page Change one or more value s in the Protocol NAT Port Server IP or Server Port field s and click Apply ...

Page 44: ...onnected the Ericsson W20 21 supports connection of up to two storage devices and one printer at the same time The printer can be accessed from all computers connected to the local network WLAN LAN Figure 31 Sharing page To access a shared file on the USB memory stick or a printer from a PC on your LAN you need the following information displayed on the Sharing page Host name The name of the Erics...

Page 45: ... one partition only the first partition is shared Information about file sharing device s is displayed on the Sharing page Storage device The manufacturer name of the device Share name The name of the shared resource on your local network To give a file sharing device a specific name type this name in the corresponding Share name field and click Apply 2 8 2 Printer Sharing Information about the sh...

Page 46: ...tion and Management 44 1 1551 CRH 102 167 Uen Rev C 2007 04 19 2 9 System The System page includes system information and management functions used to update and restore the Ericsson W20 21 Figure 32 System page ...

Page 47: ...nfiguration If you wish to revert to previous settings you can perform a configuration restore from a previously stored backup file Note Do not modify a configuration file If you do the file will be invalid and not accepted if you want to make a restore To restore from a configuration file click Browse in the Configuration Backup and Restore section on the System page Follow the instructions on th...

Page 48: ...save the settings Installing new Software from File If your service provider provides a new software version for your Ericsson W20 21 you are recommended to upgrade the Ericsson W20 21 To check for new software versions click Check in the Software Update section on the System page The following page is displayed Figure 33 Results from a check for software updates page Click For a description of th...

Page 49: ...n the Update the system with new software field Click Install to upgrade the Ericsson W20 21 with the new software version The Software Update page is displayed and updated every tenth second during the upgrade See the information and Figure 33 above 2 9 4 Factory Reset The Ericsson W20 21 configuration can be reset to factory default settings or to any previous configuration locally stored in a b...

Page 50: ...and click Apply To view only a selection of the logs in the list select a filter level from the Display list Available log levels are Alarm and All The Alarm log level corresponds with the Alarm indicator on the Ericsson W20 21 unit and the information in the Alarms section on the Overview page Click Refresh to update the list with new information The most recent logs are listed at the bottom of t...

Page 51: ...ve connected your LAN PC s to the Ericsson W20 21 follow the instructions that correspond to the operating system installed on your PC in the following sub sections If you want to allow wireless PCs to access your device you also have to follow the instructions in section 3 2 Wireless LAN Settings 3 1 1 Obtaining IP Settings Automatically Follow the instructions that correspond to the operating sy...

Page 52: ...ialog box is displayed with a list of currently installed network components If the list includes Internet Protocol TCP IP then the protocol has already been enabled Skip to step 11 4 If Internet Protocol TCP IP does not display as an installed component click Install 5 In the Select Network Component Type dialog box select Protocol and then click Add 6 Select Internet Protocol TCP IP in the Netwo...

Page 53: ...csson W20 21 The IP address range of the Ericsson W20 21 subnet is displayed on the LAN page 3 2 Wireless LAN Settings This section provides a general description of what is required to make your wireless devices work with the Ericsson W20 21 Before you follow the instructions below you need to configure the Ericsson W20 21 Wireless LAN settings see section 2 6 Wireless LAN 3 2 1 Siting the Wirele...

Page 54: ...nformation can usually be obtained through WLAN scanning The network name is case sensitive If you are using Wired Equivalent Privacy WEP security configure the same encryption key that is configured on the Ericsson W20 21 If you are using Wi Fi Protected Access WPA or WPA2 security configure the same passphrase that is configured on the Ericsson W20 21 The passphrase is case sensitive Note Window...

Page 55: ... window is displayed 5 Make sure that the Workgroup name is exactly the same as on the Ericsson W20 21 Sharing page If not you have to change the workgroup either on the PC or on the Ericsson W20 21 6 If you decide to change the workgroup on the PC type the correct name in the Workgroup field and click OK If you do not want to make any changes click Cancel The Computer Name Changes window is close...

Page 56: ... 2000 or XP follow the steps below 1 In the Windows task bar click the Start button and then click Run 2 Type host name share Name in the Open field The Host name and Share name are displayed on the Ericsson W20 21 Sharing page Click OK 3 The shared resource is displayed Double click on the shared file to open it 3 3 3 Setting Up a Connection to a Storage Device The following sections include inst...

Page 57: ...sing a Shared Printer If you connect an USB printer directly into your PC the printer device type and brand will normally be automatically detected and a printer driver assigned and installed This is not the case when using a network shared USB printer connected to your Ericsson W20 21 Install the correct printer driver compatible with the PCs operating system The printer driver is found either on...

Page 58: ... to the Ericsson W20 21 is identified 4 If you don t have the correct printer drivers installed a pop up window will appear Click OK Figure 37 Printer driver dialog 5 Select printer driver in the drop down list or select Have disk Figure 38 Add Printer Wizard select manufacturer and model ...

Page 59: ...yed as printer name on fwt Right click on your printer and select properties Under the General tab select Print Test Page Figure 39 Printer properties 3 3 4 2 Printer Supporting the RAW Protocol Windows XP To establish a connection and access a shared printer from a PC using Windows XP follow the steps below 1 In the Windows task bar click the Start button select Printers and Faxes A new window ap...

Page 60: ...o proceed Figure 40 Add Printer Wizard Local or Network Printer 4 Select Create a new port In the drop down list choose Standard TCP IP Port Click Next to proceed The new wizard Add Standard TCP IP Printer Port Wizard appears Follow the instructions and click Next to proceed Figure 41 Add Printer Wizard Select a Printer Port ...

Page 61: ... to proceed Figure 42 Add Standard TCPI IP Printer Port Wizard Add Port 6 Select the Custom check box and click on Settings 7 Select Raw as Protocol Type and set the Port Number to 9100 under Raw Settings Click OK and in the Add Standard TCP IP Printer Port Wizard click Next to proceed Figure 43 Configure Standard TCP IP Port Monitor ...

Page 62: ...07 04 19 Figure 44 Add Standard TCPI IP Printer Port Wizard Additional Port Information required 8 Verify your settings on the Add Standard TCP IP Printer Port Wizard page and click Finish Figure 45 Add Standard TCPI IP Printer Port Wizard Confirmation ...

Page 63: ... printer Click Next to proceed 11 Select Do not share this printer option Click Next to proceed 12 Print a test page to see that your printer setup is working properly Click Next to proceed It could take a minute or two for the test page to be printed 13 Click Finish in the Add Printer Wizard if everything is working successfully 14 Your printer is ready to be used Windows 2000 To establish a conn...

Page 64: ...t Add a printer The wizard Add Printer Wizard appears Click Next to proceed 3 Select Local printer attached to this computer and click Next to proceed Figure 47 Add Printer Wizard Local or Network Printer 4 Select Create a new port In the drop down list select Standard TCP IP Port Click Next The new wizard Add Standard TCP IP Printer Port Wizard appears Follow the instructions and click Next to pr...

Page 65: ...19 63 Figure 48 Add Printer Wizard Select the Printer Port 5 Enter the IP address of your Ericsson W20 21 and a port name Click Next to proceed Figure 49 Add Standard TCPI IP Printer Port Wizard Add Port 6 Select the Custom check box and click on Settings ...

Page 66: ...tocol Type and set the Port Number to 9100 under Raw Settings Click OK and in the Add Standard TCP IP Printer Port Wizard click Next to proceed Figure 50 Configure Standard TCP IP Port Monitor Figure 51 Add Standard TCPI IP Printer Port Wizard Additional Port Information required ...

Page 67: ...IP Printer Port Wizard page and click Finish Figure 52 Add Standard TCPI IP Printer Port Wizard Confirmation 9 The Add Printer Wizard is showed Find your Printer Manufacturer in the list and select the driver you installed in step 1 Click Next to proceed Figure 53 Add Printer Wizard Install Printer Software ...

Page 68: ...his printer Click Next to proceed Figure 54 Add Printer Wizard Printer Sharing 12 Print a test page to see that your setup is working properly Click Next to proceed It could take a minute or two for the test page to be printed 13 Click Finish in the Add Printer Wizard if everything is working successfully 14 Your printer is ready to be used ...

Page 69: ...1 web pages remove the power cable to disconnect the Ericsson W20 21 from power and wait a moment before reconnecting the cable To reset the settings to factory default disconnect the Ericsson W20 21 from power by removing the power cable Then 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 The factory default co...

Page 70: ...et the Ericsson W20 21 to factory default configuration see above This will reset the login details to default values The default user name and password are user If the PC is connected to the Ericsson W20 21 via an Ethernet cable check that at least one of the corresponding LAN connector indicators is illuminated If not make sure that the cable is properly connected or try with another Ethernet ca...

Page 71: ... external antenna indoor window or outdoor roof mounted External antennas are available as accessories to the Ericsson W20 21 Make sure that the LAN or WLAN connection is established For trouble shooting see section 4 5 No LAN Connection or 4 6 No Wireless LAN Connection 4 3 Slow or Intermittent Internet Connection If your Internet connection is unacceptable slow or regularly dropping take the fol...

Page 72: ...s connected to one of the LAN ports on the Ericsson W20 21 or to an Ethernet switch or hub that is connected to the Ericsson W20 21 take the following actions to identify and solve the problem Check that at least on of the LAN connector indicator is green If not check that the Ethernet cable s is properly connected Check that the PC is configured to obtain IP address automatically using DHCP If no...

Page 73: ... value is 20 Configure the Ericsson W20 21 Wireless LAN authentication method to Open This will verify if the Wireless LAN connection is working without encryption If so the problem is related to the security settings See the information below to get help to identify the problem Verify that the operating system and Wireless LAN interface of the client supports the Ericsson W20 21 authentication an...

Page 74: ...adio channel currently used Keep the Ericsson W20 21 away from electrical devices that disturb the radio signals for example microwave ovens 4 7 Slow or Intermittent Wireless LAN Connection If your wireless connections to the local network are unacceptable slow or regularly dropping take the following actions to identify and solve the problem Move the Ericsson W20 21 to another location Make sure ...

Page 75: ...ricsson W20 21 For instructions see section Error Reference source not found The Ericsson W20 21 workgroup is displayed on the Sharing web page If you have problems accessing a network printer make sure that the printer drivers are correctly installed on the PC 4 8 1 USB Printer Error Make sure that the printer is not out of ink or toner or has paper feed problems Messages regarding printing statu...

Page 76: ...at enable roaming throughout a facility APN Access Point Name A reference to the Internet access point of an Service provider Authentication The process to verify the identity of a user requesting network access Broadcasting To simultaneously send the same message to multiple recipients CDMA Code Division Multiple Access A general term describing mobile air interface technologies based on spread s...

Page 77: ...e users with broadband services like high speed data voice and fax connectivity Internet access is provided through the mobile communications network Gateway A network point that acts as an entrance to another network 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 ...

Page 78: ...s the outside world sees only the public IP address when talking to a computer on the LAN Network mask A sequence of bits applied to an IP address to select the network ID while ignoring the host ID Bits set to 1 mean select this bit while bits set to 0 mean ignore this bit For example if the network mask 255 255 255 0 is applied to the IP address 100 10 50 1 the network ID is 100 10 50 and the ho...

Page 79: ...hentication billing and information about the individual subscriber as well as address book and other personalized information SSID Service Set Identifier A unique network name that differentiates one wireless device from another Wireless PCs configured with the same SSID can access the same network Subnet A portion of a network The subnet is distinguished from the larger network by a subnet mask ...

Page 80: ...S has an air interface based on WCDMA and a core network based on the General Packet Radio Service GPRS URL Uniform Resource Locator The address of a resource on the Internet USB Universal Serial Bus An interface for connecting peripherals such as storage devices and printers to a host WAN Wide Area Network A network of computers that covers a large geographical distance With respect to the Ericss...

Page 81: ...rks WPA addresses the security limitations of WEP providing a 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 ...

Page 82: ...Ericsson Enterprise AB Ericsson AB 2007 All Rights Reserved www ericsson com 1 1551 CRH 102 167 Uen Rev C 2007 04 19 ...

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