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YML780 Rev1

NB1 User Guide

www.netcomm.com.au

Minimum System Requirements

Before continuing with the installation of your NB1, please confirm that you comply
with the minimum system requirements.

•

Pentium® MMX 233MHz

•

CD-ROM

Drive

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Ethernet card installed with TCP/IP Protocol

•

OS independent for Ethernet

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Web Browser support:

•

Microsoft Internet Explorer 5.0 (or later versions)

•

Netscape® Navigator 4.0 (or later versions)

•

Содержание NB1

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Страница 2: ... 16 Windows 2000 PCs 16 Windows Me PCs 16 Windows 95 98 PCs 17 Advanced Settings 18 Setup 19 Setup LAN Configuration 20 Interfaces 20 Configuring LAN Groups 21 IP Settings 21 Services 23 WAN Setup New Connection 24 PPPoE Connection Setup Fields 24 PPPoE Connection Setup 26 PPP Settings 26 PVC Private Virtual Circuit Settings 28 PPPoA Connection Setup 29 Static Connection Setup 30 DHCP Connection S...

Страница 3: ...Forwarding Creating Custom Rules 49 Adding Custom Rules to Applied Rules List 50 Advanced IP Filters 51 Advanced Bridge Filters 53 Enable Disable Bridge Filtering 53 Create Bridge Filter Rules 53 Edit or Delete Bridge Filter Rules 54 Hidden Bridge Filter Rules 54 Advanced Multicast 55 Advanced Static Routing 56 Configuring Static Routing 56 Advanced Dynamic Routing 57 Advanced Access Control 58 To...

Страница 4: ...DICATORS 76 Appendix B Cable Connections 77 RJ 45 Network Ports 77 Straight and crossover cable configuration 78 Straight Through Cabling 78 Cross Over Cabling 78 RJ11 connector and cable 79 605 to RJ 11 adapter 79 Appendix C Glossary 80 Appendix D Registering your NetComm Product 88 Contact Information 88 Appendix E Legal Regulatory Information 89 Customer Information 89 Product Warranty 89 Limit...

Страница 5: ...t multiple PCs with the addition of device such as a NetComm 5 or 8 port Network Switch The NB1 s Port Forwarding and UPnP functions have made it easier for today s Inter net users to configure and setup the myriad of Network Port Rules needed by Inter net applications such as On Line Gaming Peer To Peer file sharing and Messenger services to operate NB1 has a number of pre configured rules for se...

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Страница 7: ...f your NB1 please confirm that you comply with the minimum system requirements Pentium MMX 233MHz A CD ROM Drive Ethernet card installed with TCP IP Protocol OS independent for Ethernet Web Browser support Microsoft Internet Explorer 5 0 or later versions Netscape Navigator 4 0 or later versions Most popular browsers ...

Страница 8: ... phone device Splitters may be installed when your ADSL line is installed or when your current phone line is upgraded to ADSL If your telephone line is already split you will not need to use a Microfilter check with your ADSL service provider if you are unsure Each micro filter is connected in line with your telephone or fax machine so that all signals pass through it Telephones and or facsimiles ...

Страница 9: ...bel Status Indicates Power On Power is on Off Power is off ADSL On A valid ADSL connection Flashing An active WAN session PPP Flashing Trying to authenticate with ISP s PPP server On PPP link is up Off No PPP link available Ethernet Flashing Flashes when data is being sent or re ceived on the Ethernet LAN connection On Indicates a link to your LAN or Network card is active Off Indicates no link to...

Страница 10: ...b Switch Reset To reset your ADSL Router to factory default settings All custom ised settings that you have saved will be lost Please refer to the section below on how to use the reset function ADSL Telephone jack RJ 11 to connect to your Telephone Wall Socket ADSL line RJ11 for ADSL connection to telephone line 4 x RJ 45 Ports for 10 100 Ethernet LAN Reset factory defaults Power jack for AC power...

Страница 11: ... member of the NetComm Support staff In order to restore your modem to its factory default settings please follow these steps Ensure that your Modem is powered on for at least 10 seconds Use a paper clip or a pencil tip to depress the reset button for ten seconds and release At this point the reset is in progress Do not power off the unit at this point When indicator lights return to steady green ...

Страница 12: ...p Password Protocol PPPoE VPI 8 VCI 35 IP Address 192 168 1 1 Subnet Mask 255 255 255 0 Default Gateway 0 0 0 0 Modem Access Field Setting Details User Name admin Password admin Default Setting Although in most cases you will not be required to alter these default settings for your NB1 your ISP may identify specific settings to enable connection to their service Please refer to your ISP or Network...

Страница 13: ...er pack to the ADSL Modem and switch on the power switch 3 Ensure that there is a ETHERNET link light on the NB1 4 Ensure that the computer you intend to use has an IP address in the same sub net as the NB1 ADSL Modem e g the NB1 s default IP is 192 168 1 1 your computer should be on 192 168 1 100 or similar If you have DHCP enabled on your computer the NB1 will assign your computer a suitable IP ...

Страница 14: ... below Note Ensure that your PC is setup as a DHCP client Refer to the Computer Hardware Configuration section for instructions on how to set this up with different Operating Systems 1 Insert the CD into your CD ROM drive An autorun screen will appear Click on Configure Modem Alternatively if the CD ROM is not available you can open a web browser and type http 192 168 1 1 in the location bar to ac...

Страница 15: ...rrect and you have an ADSL connection es tablished the Status light will change to green 9 You should now be able to access the Internet with a web browser email client or other Internet application 10 If the status light remains red after 45 seconds and you have refreshed your web page several times check the following ADSL Link light on your modem is solid green If not you do not have an ADSL co...

Страница 16: ... your changes and close the Control Panel Windows 2000 PCs First check for the IP protocol and if necessary install it 1 In the Windows task bar click the Start button point to Settings and then click Control Panel 2 Double click the Network and Dial up Connections icon 3 In the Network and Dial up Connections window right click the Local Area Connection icon and then select Properties 4 In the Lo...

Страница 17: ...alled network components If the list includes TCP IP and then the protocol has already been enabled Skip to step 9 4 If TCP IP does not display as an installed component click Add The Select Network Component Type dialog box displays 5 Select Protocol and then click Add The Select Network Protocol dialog box displays 6 Click on Microsoft in the Manufacturers list box and then click TCP IP in the N...

Страница 18: ...etcomm com au Advanced Settings To access the Advanced Settings of your modem you click on the Advanced Settings link on the EasyConfig web page To access this page enter http 192 168 1 1 and login with username admin and password admin ...

Страница 19: ...ide www netcomm com au 19 Setup Click the Setup tab The Setup screen allows you to change current settings for your LAN Local Area Network Ethernet Switch and WAN Wide Area Network You can also create new connection profiles ...

Страница 20: ...rk settings Interfaces This section displays the available interfaces on your modem that have yet to be configured The default setting is to have all interfaces in LAN group 1 Note The interface is based on the related NB5 product which allows for LAN groups however in the case of the NB1 only one LAN group is possible Click on Configure to configure LAN settings ...

Страница 21: ...ult 255 255 255 0 will allow for 253 computers and generally does not need to be changed unless to suit existing network requirements Note If you change your IP address the DHCP server in your modem will auto matically change the IP address range DHCP pool it hands out accord ingly Option Description IP Address Private IP address for connecting to a local private network Default 192 168 1 1 Netmas...

Страница 22: ...utomatically Interface will be allocated an IP address by a DHCP server IP Address The IP address assigned to the interface by a DHCP server on your network Netmask The subnet mask assigned to the inter face by a DHCP server on your network Release button It is possible to release the IP address by clicking the Release button Renew button It is possible to renew the IP address by clicking the Rene...

Страница 23: ... of the IP ad dress pool End IP Sets the end IP address of the IP ad dress pool Lease time The lease time is the amount of time an IP address issued by the DHCP service of your modem is valid before being updated If all fields are 0 the allocated IP address will be effective indefinitely Enable DHCP Relay Allow PCs on LAN to request IP address from other DHCP server Services It is possible to set ...

Страница 24: ... Bridge CLIP Username Password usually only required for PPPoE or PPPoA types VPI VCI usually VPI 8 and VPI 35 Authentication Usually AUTO will work otherwise check with your ISP Most other choices on this screen are personal preference and not critical to getting your connection working Note The Username Password you need to type in here are for your ISP s ac count and are supplied to you by your...

Страница 25: ... your LAN Local Area Network NAT also acts as a basic firewall The firewall feature protects the PCs on your LAN from malicious attacks from people on the Internet e g DOS attacks VLAN ID If you decide to share this connection with a VLAN this field will be enabled and you need to select your VLAN ID 1 Priority Bits Set the priority bit of the Ethernet frame if using a VLAN 1 For more information ...

Страница 26: ...0 the ADSL connection will remain always connected to the ISP Keep Alive If mode is LCP This is the Keep Alive timer If a reply to the LCP echo is not received in this amount if time the con nection is dropped The Default is 10 Authentication Default is Auto However if your ISP asks you to specify the authentication type you can select it here CHAP or PAP MTU Maximum Transmission Unit indicates th...

Страница 27: ... Internet Enforce MTU Specifies that the MTU setting will be enforced Debug Enable to turn on the debugging mode of your modem Your ISP may ask you to do this should you be experiencing problems connecting to the Internet PPP Unnumbered An unnumbered interface does not have an IP address assigned to it An unnum bered interface is often used in point to point connections where an IP address is not ...

Страница 28: ...and VBR Variable Bit Rate PCR Divide the DSL line rate bps by 424 the size of an ATM cell to find the Peak Cell Rate PCR This is the maximum rate at which the sender can send cells SCR The Sustain Cell Rate SCR sets the average cell rate long term that can be transmitted MBS Maximum Burst Rate Represents the maximum number of cells accepted over a period of time When the cell rate exceeds the MBS ...

Страница 29: ...ction Setup When specifying your connection Type to be PPPoA you are able to change the En capsulation to either LLC Logical Link Control or VC Virtual Circuit encapsulation The default is LLC so do not change this setting unless your ISP instructs you to do so ...

Страница 30: ... has issued you with a static public IP address you need to specify it here e g 210 1 123 123 Mask The subnet mask specified by your ISP Default Gateway The default gateway specified by your ISP DNS You have the choice to specify up to three DNS Domain Name Service servers The function of a DNS server is to map URL names e g www google com au to their IP addresses e g 66 102 7 147 If DNS 1 is down...

Страница 31: ...ble this if you want to use this pro file connection as the default gateway for clients to connect to the Internet Bridge Settings Encapsulation Select the method of encapsulation used by your ISP from the drop down list box Choices vary depending on the mode you select in the Mode field Select LAN Select the LAN group to which you want to bridge this connection to Having a Bridged Connection plac...

Страница 32: ...ate support of up to 8 Mbps down stream and 832 Kbps upstream GDMT Full Rate G dmt G992 1 with line rate support of up to 8 Mbps downstream and 832 Kbps upstream GLITE G lite G 992 2 with line rate support of up to 1 5 Mbps downstream and 512 Kbps upstream MMODE Support Multi Mode standard ANSI T1 413 Issue 2 G dmt G 992 1 G lite G 992 2 ADSL2 2Plus Higher rate ADSL services gradually being made a...

Страница 33: ...YML780 Rev1 NB1 User Guide www netcomm com au 33 Logout Click Log Out to logout of the modem s configuration interface ...

Страница 34: ...NB1 User Guide YML780 Rev1 34 www netcomm com au Advanced The Advanced menu allows you to configure a number of features of your modem This section deals with these features ...

Страница 35: ...etween Supported by a large number of hardware and software vendors UPnP provides a simple method for enabling certain network games and messaging applications to communicate without requiring configuration of your router s NAT function To Enable UPnP click the Enable UPnP box and choose the WAN connection usually PPPoE Select the LAN Connection e g LAN Group 1 to which UPnP is to be ap plied to O...

Страница 36: ...ide YML780 Rev1 36 www netcomm com au Advanced SNTP SNTP Simple Network Time Protocol allows your modem to update its time auto matically using an SNTP server To enable this feature click the Enable SNTP tick box ...

Страница 37: ...on nect to be unavailable Polling Interval The interval that your modem will up date its time with an SNTP server Retry Count The number of attempts at connecting to an SNTP server Time Zone Select the time zone you are in Day Light Enable this to enable daylight savings for the time on your modem Click Apply to save the settings To check that your NB1 modem is talking to an NTP server follow thes...

Страница 38: ...ch as the router you use now Option Description Vendor OID The enterprise OID to which the system belongs to Enable SNMP Agent Enabled by default Allows SNMP man agement software to connect to your modem and gather information Enable SNMP Traps Enabled by default Enables an agent to notify the management station of any significant events by using an unsolic ited SNMP message Name Enter a name for ...

Страница 39: ...netcomm com au 39 Option Description Traps Destination IP The IP address of the SNMP manage ment device Trap Community Used when sending SNMP traps to an other device Trap Version Version 1 or 2c Apply Click Apply to save the changes ...

Страница 40: ...will have 2 primary fields 1 Connection name selection 2 A table to select queue weights for the system transmit queues IP QoS traffic shaping is associated with any transmitted traffic from the perspec tive of the NB1 Each interface has 3 priority queues associated with transmit data The web UI will allow the user to choose any interface connection and select the priority weights associated with ...

Страница 41: ...select 1 A Trusted mode check box 2 A traffic priority choice High Medium Low and 3 An IP rules matching selection area The NB1 has two primary modes of operation with regard to queue traffic prioriti zation Trusted and Un trusted The Web UI will provide one check box to enable trusted mode In trusted mode all rules will be applied first regardless of the setting of the TOS bits After the rules ha...

Страница 42: ...uffer a common pool for all queues can be monopolized by a greedy flow on the low priority queue thus preventing en queuing high priority traffic To prevent such conditions the en queuing process is using a simple configurable al location of per queue lengths adding up to the total queue length Configuration The Expedited Forwarding queue fast service queue length will be configurable via the conf...

Страница 43: ...Voice Traffic With Voice traffic shared over same PVC with Data traffic the simple packet classifi cation and prioritization will not suffice to achieve the low latency required by voice In this case a voice call triggers dynamic flushing of existing data packets from device queues including DSL device driver for Head of Line Blocking removal and IP MTU resizing based on uplink bandwidth for fragm...

Страница 44: ...2 1 Minimize Monetary Cost 1 Filler 2 0x4 2 Maximize Reliability 0 Best Effort 2 0x6 3 mmc mr 0 Best Effort 2 0x8 4 Maximize Throughput 2 Bulk 1 0xa 5 mmc mt 2 Bulk 1 0xc 6 mr mt 2 Bulk 1 0xe 7 mmc mr mt 2 Bulk 1 0x10 8 Minimize Delay 6 Interactive 0 0x12 9 mmc md 6 Interactive 0 0x14 10 mr md 6 Interactive 0 0x16 11 mmc mr md 6 Interactive 0 0x18 12 mt md 4 Int Bulk 1 0x1a 13 mmc mt md 4 Int Bulk...

Страница 45: ...a Fixed IP address otherwise the dynamic IP address allocated by DHCP will need to be communicated prior to every user session More about Port Forwarding In TCP IP and UDP networks a port is a 16 bit number used to identify which ap plication program usually a server incoming connections should be delivered to Some ports have numbers that are pre assigned to them by the IANA the Inter net Assigned...

Страница 46: ...h 49151 The remaining ports referred to as dynamic ports or private ports are numbered from 49152 through 65535 Examples of well known and registered port numbers are shown in Table 4 for fur ther information please see IANA s website at http www iana org assignments port numbers Well know and registered Ports Port Number Protocol Description 20 TCP FTP Data 21 TCP FTP Control 22 TCP UDP SSH Remot...

Страница 47: ...e Connection Profile Allow Incoming Ping Enabling this feature allows users on the WAN side of your modem to receive replies to an ICMP ping command Use ful for testing remote connection to your modem Select LAN Group Select the LAN group for which you are setting up the port forwarding rules for LAN IP Select the device PC to which you will be port forwarding data to The default will be the LAN d...

Страница 48: ... the DMZ host is enabled Any direct communication to the WAN port of your Modem that is not a reply to the original NAPT request is forwarded to the DMZ host Option Description Select your WAN Connection Select the connection to which your DMZ client is connected to Select LAN group Select the LAN group in which you want to place the DMZ client Select a LAN IP Address Select the LAN IP address of ...

Страница 49: ...he starting and ending port numbers in the range which are mapped by the start port and end port fields The Destination Port Map field specifies the internal port that the data will be directed to on the LAN Client When dealing with port ranges the Internal Port des ignated by the Port Map field will be the same as the first port in the range When you simply want to forward a single port from outs...

Страница 50: ...Port Map This is the port number that the data should be forwarded to on the speci fied LAN IP i e the inside port This is usually the same as the port start figure TIP It is possible to map outside port numbers or ranges i e port start port end to a different inside port numbers port map for reasons of security or convenience Click Apply The Port Rule settings defined by this process will then be...

Страница 51: ...sts allow you to specify individual rules that will deny traffic by defining the following Source IP address or IP Subnet Destination IP address or Subnet Port or Port range Protocol Custom IP filters are different from Port forwards or Block All traffic because they allow greater scopes of IP addresses to be included in the block Note You must have at least one LAN Client in your LAN clients tabl...

Страница 52: ...d LAN Clients Option Description Select LAN Group Select the LAN group you would like to add a LAN client to Enter IP Address Enter the IP address of the LAN client to be added Hostname Enter the Hostname MAC Address Enter the MAC address of the new cli ent To find out the MAC address of the client open a command prompt and execute an ipconfig all command Win dows 2000 XP Note it is optional to ad...

Страница 53: ...ing themselves to a wireless LAN Enable Disable Bridge Filtering To enable Bridge filtering navigate to the Bridge Filter Control Screen and select the Enable Bridge Filters check box If the check box is selected Bridge filtering is enabled according to the list of Bridge Filter Rules that has been created If the box is de selected Bridge Filtering will not be enabled even if Bridge Filter Rules h...

Страница 54: ...ll select every rule When the desired selections are made effect deletion by clicking on Apply To save changes click on Apply Hidden Bridge Filter Rules The Bridge filter table contains three hidden rules These rules are built into the Router to ensure the user does not become locked out by entering a rule which prevents further access to the router The first rule allows any and all ARP frames thr...

Страница 55: ...sonnel from a home office or the periodic publishing of an online newsletter Multicasting provides efficiencies which enable it to use less network bandwidth than the sending of the same data by other means e g SMTP To access Multicasting click on Advanced Multicast To enable Multicast open the multicast screen and select the Enable IGMP Multicast If you have multiple connections setup on your mod...

Страница 56: ...on IP is the address of the remote LAN network or host to which you want to assign a static route Enter the IP address of the host for which you wish to create a static route here For a standard Class C IP domain the network address is the first three fields of the New Destination IP while the last field should be 0 The Subnet Mask identifies which portion of an IP address is the network por tion ...

Страница 57: ...P If this box is checked Dynamic Routing is enabled Protocol Choice is dependent upon the network environment Most networks support Rip v1 If RIP v1 is selected routing data will be sent in RIP v1 format If Rip V2 is selected routing data will be sent in RIP v2 format using Subnet Broadcasting If Rip V1 Compatible is selected routing data will be sent in RIP v2 format using Multicasting Enable Pas...

Страница 58: ...ill reveal the Enable Access Control screen The default configuration enables Telnet Web FTP and SSH access FROM the LAN TO the WAN Access FROM the WAN to the LAN is not available in the default configuration Enable Access Control check this box to enable selective access from the WAN to your LAN for applications of the class indicated by the relevant check boxes If Ac cess Control is not enabled ...

Страница 59: ... NB1 User Guide www netcomm com au 59 Tools The Tools section allows you to save the configuration restart the gateway update the gateway firmware setup user and remote log information and run Ping and Modem tests ...

Страница 60: ...ions Press the button to execute a command Here you will find the following functions Save All Restart Restore Defaults same as pressing and holding the button on the back to clear and reset to factory default Note If you Restore Defaults you will need to reconfigure your internet connec tion settings ISP Username Password etc ...

Страница 61: ...er Name Default is admin Password Default is admin Idle Timeout If there is no activity by the admin user logged into the modem for the number of minutes specified in this field the user will be required to login again Apply Click Apply to save the changes WARNING It is strongly recommended that you change the default username and password to something unique ...

Страница 62: ...NB1 s firmware browse an update image file or configuration file and then click the Update Gateway button Additionally you may download your configuration file from the system by clicking Get Configuration so that you can store a backup of your configuration to restore it at a later date ...

Страница 63: ...y directly from the NB1 to the Internet or to a computer on your Network You must make certain that the IP address that you ping will actually respond to a ping before interpreting the results of the ping Note Computers and Network devices can be configured to communicate even though they do not respond to a ping this can sometimes be done for security ...

Страница 64: ...m is properly connected to the Network This test may take a few seconds to complete To perform the test select your connection from the list and press the Test button Note Errors or failures on this test do not specifically mean your connection is faulty only your ISP can tell you if these tests should pass or fail ...

Страница 65: ...e Log Out button will take you back to the login screen Use the following procedures to log out 1 Select Log Out from the left hand column You will be prompted to confirm in the screen shown above 2 Confirm by clicking the Log Out button at the bottom right corner You will be taken back to the login screen cross reference ...

Страница 66: ...NB1 User Guide YML780 Rev1 66 www netcomm com au Status The Status section allows you to view the Status Statistics of different connections and interfaces ...

Страница 67: ...r Guide www netcomm com au 67 Status Network Statistics You can view data statistics for your Ethernet ports combined or for your ADSL port in these pages Note The statistics will be reset on loss of power or Reboot Reset ...

Страница 68: ...m com au Status Connection Status Here you can view the connection status of your Internet connection usually PP PoE You can also see the Public IP address that has been assigned to your modem as well as other information about the connection ...

Страница 69: ...L780 Rev1 NB1 User Guide www netcomm com au 69 Status DHCP Clients The DHCP Clients page shows the MAC address IP Address Host Name and Lease Time assigned to other computers in your network by the modem ...

Страница 70: ...NB1 User Guide YML780 Rev1 70 www netcomm com au Status Modem Status The Modem Status page shows the modem status and DSL statistics ...

Страница 71: ...YML780 Rev1 NB1 User Guide www netcomm com au 71 Status Product Information The Product Information page shows the product information and software versions ...

Страница 72: ...NB1 User Guide YML780 Rev1 72 www netcomm com au Status System Log The System Log page shows the events triggered by the system ...

Страница 73: ...YML780 Rev1 NB1 User Guide www netcomm com au 73 EasyConfig The EasyConfig menu takes you to the EasyConfig page This is the page you origi nally configured your modem with ...

Страница 74: ...NB1 User Guide YML780 Rev1 74 www netcomm com au Help This menu provides information on various features of your modem Click the hy perlinks to access the information ...

Страница 75: ... and Receive ENCAPSULATION SUPPORT RFC2684 Bridged and Routed LLC and VC Mux Support RFC2364 PPPoA Client Support RFC2516 PPPoE Client Support RFC2225 RFC1577 Classical IP Support Transparent Bridge Support PAP CHAP MS CHAP for Password Authentication Support NETWORK SUPPORT Port Forwarding rules for Popular Games Applications Static IP Dynamic RIP Routing Support IP TCP UDP ICMP ARP RARP Applicat...

Страница 76: ...FTP FTP Support For Firmware Upgrade Web based Firmware Upgrade Local Soft Factory Reset Button via Web GUI Diagnostic Test DSL OAM Network Ping Test Telnet CLI Read Only SNMP Syslog Support HARDWARE Texas Instrument TNETD7300 Single Chip Network Processor AFE Line Driver Chipset Dying Gasp Support A Tick approval N367 PLATFORM SUPPORT For Ethernet OS Independent includes Windows Mac Linux and UNI...

Страница 77: ...a standard LAN interface such as a Hub Switch Hub or Router Use unshielded twisted pair UTP or shield twisted pair STP cable to connect the networking device to the RJ 45 Ethernet port Depending on the type of connection 10Mbps or 100Mbps use the following Ethernet cable as prescribed 10Mbps Use EIA TIA 568 100 Category 3 4 or 5 cable 100Mbps Use EIA TIA 568 100 Category 5 cable Note To prevent lo...

Страница 78: ... In a crossover cable the wires of 1 2 3 6 are re versed so that wire 1 become 3 at the other end of the cable 2 becomes 6 and so forth To determine which wire is wire 1 hold the RJ 45 cable tip with the spring clip facing towards the ground and the end pointing away from you The copper wires exposed upwards to your view The first wire on the far left is wire 1 You can also refer to the illustrati...

Страница 79: ... and cable An RJ 11 connector is the small modular plug used for most analog telephones It has six pin slots in the head but usually only two or four of them are used Figure 5 605 to RJ 11 adapter The 605 to RJ 11 adaptor is provided to comply with the older 610 Telstra wall socket The 605 to RJ 11 adapter may be used to convert the supplied RJ 11 cable if the older connection is required ...

Страница 80: ... rates range from 45 Mbps to 2 5 Gbps See also data rate authenticate To verify a user s identity such as by prompting for a password binary The base two system of numbers that uses only two digits 0 and 1 to represent all numbers In binary the number 1 is written as 1 2 as 10 3 as 11 4 as 100 etc Although expressed as decimal numbers for convenience IP addresses in actual use are binary numbers e...

Страница 81: ...in DSL is a digital signal See also analog DNS Domain Name System The DNS maps domain names into IP addresses DNS information is distributed hierar chically throughout the Internet among computers called DNS servers When you start to access a web site a DNS server looks up the requested domain name to find its corresponding IP address If the DNS server cannot find the IP address it communicates wi...

Страница 82: ...TCP IP protocol suite transport layer encapsulation protocol hop When you send data through the Internet it is sent first from your computer to a router and then from one router to another until it finally reaches a router that is directly connected to the recipient Each individual leg of the data s journey is called a hop hop count The number of hops that data has taken on its route to its destin...

Страница 83: ...to a small geo graphic area such as a home office or small building LED Light Emitting Diode An electronic light emitting device The indicator lights on the front of the My ADSL Modem are LEDs MAC address Media Access Control address The permanent hardware address of a device assigned by its manufacturer MAC addresses are expressed as six pairs of characters mask See network mask Mbps Abbreviation...

Страница 84: ... Internet or Inter Network Groper A program used to verify whether the host associated with an IP address is online It can also be used to reveal the IP ad dress for a given domain name port A physical access point to a device such as a computer or router through which data flows into and out of the device POTS Plain Old Telephone Service Traditional analog telephone service using copper telephone...

Страница 85: ...ment splitter A device that splits off the voice component of the DSL signal to a separate line so that data and telephone service each have their own wiring and jacks The splitter is installed by your telephone company where the DSL line enters your home The CO also contains splitters that separate the voice and data signals sending voice to the PSTN and data on high speed lines to the Internet S...

Страница 86: ...ket decrements this field by one When the TTL reaches zero the packet is discarded twisted pair The ordinary copper telephone wiring long used by tel ephone companies It contains one or more wire pairs twisted together to reduce inductance and noise Each telephone line uses one pair In homes it is most often installed with two pairs For Ethernet LANs a higher grade called Category 3 CAT 3 is used ...

Страница 87: ...pe Navigator and Mi crosoft Internet Explorer See also HTTP web site WWW Web page A web site file typically containing text graphics and hyperlinks cross references to the other pages on that web site as well as to pages on other web sites When a user accesses a web site the first page that is displayed is called the Home page See also hyperlink web site Web site A computer on the Internet that di...

Страница 88: ...quested warranty informa tion to NetComm within 30 days of the original purchase by registering on line via the NetComm web site at www netcomm com au Contact Information If you have any technical difficulties with your product please do not hesitate to contact NetComm s Customer Support Department Email support netcomm com au Fax 612 9424 2010 Web www netcomm com au Note NetComm Technical Support...

Страница 89: ...ncourage the user to try to correct the interference by one or more of the following measures Change the direction or relocate the receiving antenna Increase the separation between this equipment and the receiver Connect the equipment to an alternate power outlet on a different power circuit from that to which the receiver TV is connected Consult an experienced radio TV technician for help 3 The p...

Страница 90: ...plate has been removed Limitations of Warranty The Trade Practices Act 1974 and corresponding State and Territory Fair Trading Acts or legalisation of another Government the relevant acts in certain circumstances imply mandatory conditions and warranties which cannot be excluded This warranty is in addition to and not in replacement for such conditions and warranties To the extent permitted by the...

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