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SMC Networks 7204BRB, User Manual

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Troubleshooting

58

Some ISPs terminate the PPP session for inactivity reasons.

If [PPP connect on WAN access] is selected, the PPP will be 
automatically reconnected when an URL is entered in 
the browser (packet interested in going out the WAN). 

If [Automatic Reconnect] is selected, it will reconnect the PPP 
session whenever it is terminated by ISP.

What is the difference between PPP connect on WAN access 
and the Automatic Reconnect?

Summary of Contents for 7204BRB

Page 1: ......

Page 2: ...ADSL BarricadeTM 4 Port ADSL Router with Built in Annex B ADSL Modem User Guide February 2004 ...

Page 3: ... Admin Page 16 Status Page 17 WAN Configuration 23 LAN Configuration 29 PPP Configuration 30 NAT Configuration 33 Virtual Server Configuration 35 DNS Configuration 37 Bridge Filtering Configuration 38 Route Table 39 Learned MAC Table 41 ADSL Configuration 42 RIP Configuration 43 Password Configuration 46 Miscellaneous Configuration 47 Reset to Factory Default 49 Diagnostic Test 50 Code Image Updat...

Page 4: ...Table of contents ii Troubleshooting 57 Technical Specifications 59 Terminology 65 Compliances i Legal Information and Contacts vii ...

Page 5: ...is dedicated to your home your connection to the Internet will also be highly secured and reliable Features ANSI T1 413 Issue 2 ITU G 992 1 G DMT ITU 992 2 G Lite and ITU G 994 1 G hs compliant modem for high speed Internet access 10 100Base T Ethernet router to provide Internet connectivity to all computers on your LAN Network address translation NAT Firewall and IP filtering functions to provide...

Page 6: ...lic Internet address for your LAN One or more computers each containing an Ethernet 10 100 Base T network interface card NIC An Ethernet hub switch if you are connecting the device to more than one computer on an Ethernet network For system configuration using the supplied web based program a web browser such as Internet Explorer V5 0 or later or Netscape V6 1 or later ...

Page 7: ... adapter One RJ 45 Ethernet cable One RJ 11 Standard phone DSL line cable Installation utility and Documentation CD Quick Installation Manual Note Included with specific models is a RJ 11 to RJ 45 cable that will allow connection to an ISDN splitter for U R2 compatibility ...

Page 8: ... Status Green Green Green Green 100 Mbps Yellow 10 Mbps Green Steady Power On ADSL line is trained DSL Transmitting Receiving Link Green Blink N A Training TX RX Transmitting Receiving Yellow Steady N A N A N A Link Yellow Blink N A N A N A Transmitting Receiving OFF Power Off No Connection No TX RX No Connection ...

Page 9: ...escription Power Supply 12V 1 2A Reset and Restore Factory Defaults Button If depressed for 1 2 seconds ready for Reset If depressed for 5 seconds or more ready to restore factory default settings DSL Port RJ 11 phone connector Ethernet Port Four 10 100M BASE T RJ 45 connectors ...

Page 10: ... of a provided Ethernet cable to a regular hub port and the other to the Ethernet port on the ADSL Barricade Connecting to the ADSL Line Connect one end of the provided phone cable to the port labeled DSL on the Rear Panel of the device Connect the other end to your wall phone jack Note Included with specific models is a RJ 11 to RJ 45 cable that will allow connection to an ISDN splitter for U R2 ...

Page 11: ...ternet settings on your computers to work with the ADSL Barricade Before you begin By default the ADSL Barricade automatically assigns all required Internet settings to your PCs You need only to configure the PCs to accept the information when it is assigned Note In some cases you may want to assign Internet information manually to some or all of your computers rather than allow the ADSL Barricade...

Page 12: ...d network items 4 Ensure that the check box to the left of the item labeled Internet Protocol TCP IP is checked and click Properties 5 In the Internet Protocol TCP IP Properties dialog box click the radio button labeled Obtain an IP address automatically Also click the radio button labeled Obtain DNS server address automatically 6 Click OK twice to confirm your changes and close the Control Panel ...

Page 13: ...k OK You may be prompted to install files from your Windows 2000 installation CD or other media Follow the instructions to install the files 7 If prompted click OK to restart your computer with the new settings Next configure the PCs to accept IP information assigned by the ADSL Barricade 8 In the Control Panel double click the Network and Dial up Connections icon 9 In the Network and Dial up Conn...

Page 14: ...P IP then the protocol has already been enabled Skip to Step 11 4 If Internet Protocol TCP IP does not appear as an installed component click Add 5 In the Select Network Component Type dialog box select Protocol and then click Add 6 Select Microsoft in the Manufacturers box 7 Select Internet Protocol TCP IP in the Network Protocols list and then click OK You may be prompted to install files from y...

Page 15: ...98 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 icon The Network dialog box displays a list of currently installed network components If the list includes TCP IP then the protocol has already been enabled Skip to Step 9 3 If TCP IP does not appear as an installe...

Page 16: ...nt labeled TCP IP and then click Properties If you have multiple TCP IP listings select the listing associated with your network card or adapter 10 In the TCP IP Properties dialog box click the IP Address tab 11 Click the radio button labeled Obtain an IP address automatically 12 Click the DNS Configuration tab and then click the radio button labeled Obtain an IP address automatically 13 Click OK ...

Page 17: ...ow the instructions to install the files After all files are installed a window appears to inform you that a TCP IP service called DHCP can be set up to dynamically assign IP information 6 Click Yes to continue and then click OK if prompted to restart your computer Next configure the PCs to accept IP information assigned by the ADSL Barricade 7 Open the Control Panel window and then double click t...

Page 18: ... and subnet mask you will assign to each PC which will be assigned static IP information The IP address of the default gateway for your LAN In most cases this is the address assigned to the LAN port on the ADSL Barricade By default the LAN port is assigned this IP address 192 168 1 1 You can change this number or another number can be assigned by your ISP See Configuring the LAN Ports for more inf...

Page 19: ... and hit Enter key 2 An Enter Network Password page will be displayed Enter the default User Name and Password The default login Username of the administrator is admin The default login Password is smcadmin The default login Username for the non administrator is user The default login Password is password 3 Admin page will be displayed ...

Page 20: ...em and interfaces Home page The Home page shows the firmware versions and WAN and LAN interface status Home Firmware Version This field displays the firmware version number Customer Software Version This field displays the customer s own firmware version number WAN These fields display the IP Address Subnet Mask and MAC Address for the WAN ADSL interface ...

Page 21: ...r of Lan Interfaces This field displays the total number of available interfaces for the LAN interface Number of ethernet devices connected to the DHCP server These fields display the DHCP client table with the assigned IP addresses and MAC addresses ADSL Status The ADSL Status page shows the ADSL physical layer status ...

Page 22: ... Margin Amount of increased noise that can be tolerated while maintaining the designed BER bit error rate The SNR Margin is set by Central Office DSLAM If the SNR Margin is increased bit error rate performance will improve but the data rate will decrease Conversely if the SNR Margin is decreased bit error rate performance will decrease but the data rate will increase Line Attenuation Attenuation i...

Page 23: ... MAC Address for the LAN interface Loss of Signal This field displays the count of event of ADSL signal loss Loss of Frame This field displays the count of event of ADSL frame loss CRC Errors This field displays the number of transmit data frames containing CRC errors Data Rate This field displays the ADSL data rate Latency This field displays the latency modes for fast or interleave ...

Page 24: ...lay the DHCP client table with the assigned IP addresses and MAC addresses Ethernet Link Status This field displays the link UP or DOWN for the Ethernet PPP Status The PPP Status page shows the status of PPP for each PPP interface PPP These fields display the Connection Name user defined Interface PVC Mode PPPoE or PPPoA Status Connected or Not Connected Packets Sent Packets Received Bytes Sent an...

Page 25: ...ected individually WAN Status The WAN Status page shows the information and status of WAN PVCs WAN These fields display the IP Address Subnet Mask and MAC Address for the WAN ADSL interface Use the Virtual Circuit selection to select different PVC for status display DHCP Release and Renew This field allows the user to release and renew the WAN IP address in the WAN DHCP Client Enabled dynamic mode...

Page 26: ...he new setting and reboot the board The WAN Configuration page allows the user to set the configuration for the WAN ADSL ports Per VC Settings Under Per VC Setting you will find the configurations for VPI VCI Static IP Address Subnet Mask and Gateway The Static IP Address Subnet Mask and Gateway are used for Static IP configuration Current firmware supports eight PVCs To switch between the PVCs pl...

Page 27: ...e Mode Router Mode PPPoA PPPoE Router Mode Dynamic IP Router Mode Static IP IP address N A Automatically assigned by ISP Automatically assigned by ISP Provided by ISP Subnet Mask N A Automatically assigned by ISP Automatically assigned by ISP Provided by ISP Gateway N A Automatically assigned by ISP Automatically assigned by ISP Provided by ISP Encapsulation 1483 Bridged IP LLC 1483 Bridged IP VC ...

Page 28: ...here must be at least one IGMP querier router present IGMP querier will send IGMP query packet The ADSL Gateway is responsible to relay IGMP queries to Ethernet End user multicast application device sends IGMP report while receiving IGMP query or being activated by user the ADSL Barricade should be responsible to proxy that is change source PPP Password N A Provided by ISP N A N A DHCP Client enab...

Page 29: ...e supports multiple PPP sessions per PVC The PPP configuration in the WAN Configuration page is for the first PPP session for each PVC The predefined PPP Account Name Account ID is Simple PPP Account 0 for PVC0 and predefined PPP Connection Name is Simple PPP Session 0 for PVC0 For the other PVC X the predefined account name and connection name will be Simple PPP Account X and Simple PPP Session X...

Page 30: ...ates the peer of PPP connection the maximum size of the PPP information field this device can recieve The default value is 1492 and is used in the beginning of the PPP negotiation In the normal negotiation the peer will accept this MRU and will not send packets with information field larger than this value MTU Maximum Transmission Unit MTU value will be fragmented before the transmission During th...

Page 31: ...ave it blank Virtual Circuit Interface between Access Node and network It supports interface 0 to 7 The default value is 0 Authentication When Auto option is chosen the PAP mode will run first then CHAP Automatic Reconnect When it is checked it will maintain the PPP connection all the time If the ISP shut down the PPP connection it will automatically reconnect PPP session ...

Page 32: ... IP address DHCP Server System Allocated The DHCP address pool is based on LAN port IP address plus 12 IP addresses For example the LAN IP address is 192 168 1 1 the DHCP address pool is at the range of 192 168 1 10 to 192 168 1 100 User Defined The DHCP address pool is at the range of User Defined Start Address and User Defined End Address The maximum pool size can be 253 IP addresses 255 total I...

Page 33: ... to the PPP Account Configuration page first to configure Account ID Users Name and Password DHCP gateway selection The default setting for the DHCP Gateway Selection is Automatic The user can select User Defined to specify User Defined Gateway Address The DHCP server will issue the User Defined Gateway Address to the LAN DHCP clients Lease Time The Lease time is the amount of time a network user ...

Page 34: ...e and User Name It does not show the password Acct ID This field allows the user to enter his own account ID to distinguish different accounts User Name Enter the PPP user name usually provided by the ISP Password Enter the PPP password usually provided by the ISP The Number of PPP Accounts This field displays the total number of PPP Accounts entered ...

Page 35: ...er will accept this MRU and will not send packet with information field larger than this value MTU Maximum Transmission Unit indicates the network stack of any packet is larger than this value will be fragmented before the transmission During the PPP negotiation the peer of the PPP connection will indicates its MRU and will be accepted The actual MTU of the PPP connection will be set to the smalle...

Page 36: ...ation IP addresses and Route Table This eliminates the need for the static NAT session configuration between multiple LAN clients and multiple WAN connections When the Dynamic NAPT is chosen there is no need to configure the NAT Session and NAT Session Name Configuration NAT Static and NAPT Static The NAT option only maps single WAN IP address to the local PC IP address It is peer to peer mapping ...

Page 37: ...o show all the Session Names with its WAN Interface Session Name This field allows the user to select the session from the configured NAT Session Name Configuration User s IP This field allows the user to assign the IP address to map the corresponding NAT NAPT sessions Number of NAT Configurations This field displays the total number of NAT Sessions entered Number of Session This field displays th...

Page 38: ...erver The Conexant firmware includes the Free BSD version firewall All UDP TCP ports are protected from intrusion If any specific local PCs need to be mapped to the UDP TCP port on WAN side please input the mappings here Session Name This field allows the user to enter his her own session Name to distinguish different NAT sessions for different interfaces among different PPP sessions and different...

Page 39: ... to enter the port number of the Private Network In most cases the private port number is same as public port number Host IP Address This field allows the user to enter the private network IP address for the particular sever Port Protocol Port Protocol 21 FTP 79 Finger 23 Telnet 80 HTTP 25 SMTP 110 POP3 43 Whois 115 SFTP 53 DNS 161 SNMP 69 TFTP 162 SNMP traps ...

Page 40: ...sages will come into LAN port first The DNS proxy on the ADSL Barricade records the available DNS servers and forward DNS query messages to one DNS server Disable DNS Proxy The LAN port does not process the DNS query message For the DHCP requests from local PCs the DHCP server will set the user configured preferred DNS server or alternate DNS server whichever is available as the DNS server Then al...

Page 41: ...DNS proxy will use the user configured preferred DNS server and alternate DNS server And all DNS query message will be sent to one of DNS servers Enter the DNS IP in the Preferred DNS Server and Alternate DNS Server fields Auto Discovery User Configured The DNS proxy s table has all the IP addresses of dynamically obtained and user configured DNS servers Bridge Filtering Configuration The Bridge F...

Page 42: ...s select Block and click Add Then all incoming WAN and LAN Ethernet packets matched with this source MAC address will be filtered out If the Forward is selected then the packets will be forwarded to the destination PC Destination MAC When the bridge filtering is enabled enter the Destination MAC address select Block and click Add Then all incoming WAN and LAN Ethernet packets matched with this des...

Page 43: ...eld allows the user to select the CPE to automatically decide the Default Gateway System Default Selected Interface This field allows the user to select a Network Interface from a list PVCs PPP Sessions and LAN This option lets the user to associate the system wide Default Gateway to a Network Interface static or dynamic and provides a way to fix the Default Gateway to a dynamic Network Interface ...

Page 44: ...etwork or host IP address for the static routing Netmask This field allows the user to enter the Subnet Mask for the static routing Gateway This field allows the user to enter the IP address of the gateway device that allows the router to contact the remote network or Select the Interface for the Gateway Manually Configured Routes This field displays the static route entries entered by the user ...

Page 45: ...n for ADSL protocols Aging Timeout This field allows the user to enter the update displays period for the MAC table Trellis This field allows the user to Enable or Disable the Trellis Code By default it is always Enabled Handshake Protocol This field allows the user to select the ADSL handshake protocol ...

Page 46: ...ide configuration of RIP The actual RIP configuration is in the RIP Per Interface Configuration Wiring Selection This field allows the user to enter the wiring selection for the RJ 11 Tip Ring is the default for the board without the inner outer pair relay Bit Swapping This field allows the user to Enable or Disable the upstream bit swapping ...

Page 47: ...r the Expire timer in seconds This timer specifies the expiration time of a route When a route has not been updated for more than expire period of time it is removed from the Route Table This route is invalidated and remains in the internal RIP Route Table It will be included in the RIP announcements to let other routers know the changes Default 180 seconds Garbage Timeout This field allows the us...

Page 48: ...roadcast V2 BC The supplier transmits in RIPv2 Broadcast V2 MC The supplier transmits in RIPv2 Multicast Listener This field allows the user to select the Listener Mode RIP Receive V1 The listener receives the RIPv1 only V2 The listener receives the RIPv2 only V1 V2 This listener receives the both RIPv1 and RIPv2 CurrentRIP Settings This field displays the RIP status of each interface ...

Page 49: ... Password Configuration The Password Configuration page allows the user to set the password for administrator The Admin password is the same as the FTP password so it must have at least 8 characters for the FTP to work ...

Page 50: ... and LAN access to the Web pages are allowed LAN If Restricted has been selected this field allows the Web pages access from LAN side WAN Restricted may be selected WAN specify IP Subnet Mask These fields allow the Web access from WAN side with a Specify IP and Subnet Mask HTTP server port This field allows the user to specify the port of the Web access For example when it is changed to 1001 the H...

Page 51: ... an additional layer of security When there is a suspected packet coming from WAN the firewall will forward this packet to the DMZ host DMZ Host IP This is the IP address of the DMZ host at LAN side DHCP Relay If set to Enable the DHCP requests from local PCs are forwarded to the DHCP server runing on WAN side To have this function working properly Disable NAT and DHCP server on LAN side also make...

Page 52: ...VCs will be working Otherwise no WAN PVC can have IGMP Proxy working on it PPP reconnect on WAN access If Enabled has been selected the PPP session will be automatically established when a packet wants to go out the WAN PPP Half Bridge When Enabled has been selected for the PPP Half Bridge only one PC is able to access the Internet and the DHCP server will duplicate the WAN IP address from the ISP...

Page 53: ...ization This test checks the ADSL showtime If this test returns FAIL all other tests will be skipped Test ATM OAM Segment Loop Back This test sends ATM OAM F5 Segment loop back request cells to the CO This test will pass if response cell is received Since some service providers might not support this test it could still work even if this test fails If this test fails consistently and the ADSL Barr...

Page 54: ...ured correctly Test Ethernet Connect to ATM This test checks the ATM AAL5 module is loaded correctly Test PPPoE Connection This test checks the PPPOE connection Test PPP Layer Connection This test checks the PPP authentication Test IP Connect to PPP This test checks a valid IP address assigned by the service provider Ping Primary DNS This test checks the primary DNS can be reached through ping req...

Page 55: ...Configuration 52 Code Image Update The Code Image Update page allows the user to upgrade the image code locally Browse the location of file firmware dlf file and click Upload to start the update ...

Page 56: ...ld allows the user to clear the current contents of the System Log Save This field allows the user to save the current contents of the System Log by right clicking Here and selecting Save Target As to save it as a text file The System Log records DSL Layer DSL Link detected DSL Link connected DSL Link disconnected ...

Page 57: ...TM disconnected ATM setting up VPI VCI PPP Layer PPP authenticated PPP invalid user name or password PPP unable to connect with PPP server IP Layer IP protocol up PPP IP address PPP Gateway IP address PPP DNS Primary IP address PPP DSN Secondary IP address ...

Page 58: ...es the new settings need to be saved to flash so it is necessary to go to this Reboot page to save and reboot the system for the changes to take effect During Save and Reboot the following Web page will appear Your setting are being saved and the modem is being rebooted Please wait After Save and Reboot the following Web page will appear Your setting have been saved and the modem has rebooted ...

Page 59: ...ve typed your Username and Password correctly Contact your service provider to make sure that the DSL connection is functioning properly If that phone does not have its own filter you may hear static or high pitched noise if you make a phone call while your ADSL Barricade is on A filter also prevents a phone from interfering with or dropping your DSL connection You have to go to the PPP Status und...

Page 60: ...elected the PPP will be automatically reconnected when an URL is entered in the browser packet interested in going out the WAN If Automatic Reconnect is selected it will reconnect the PPP session whenever it is terminated by ISP What is the difference between PPP connect on WAN access and the Automatic Reconnect ...

Page 61: ...edded full rate ADSL Modem Compliant with ANSI T1 413 Issue 2 ITU G 992 1 G DMT and ITU G 992 2 G Lite and ITU G 994 1 G hs G DMT full rate connectivity at up to 8 Mbps downstream 1 Mbps upstream Up to 18 000 feet loop reach over standard loops ATM and AAL Support AAL5 ATM Transmission Convergence TC layer Support for full range of PVC settings Hardware SAR ...

Page 62: ...tions PPP over ATM VCMUX RFC 2364 PPP over ATM LLCSNAP RFC 2364 Bridged IP over ATM LLCSNAP RFC 1483 Routed IP over ATM LLCSNAP RFC 1483 Bridged IP over ATM VCMUX RFC 1483 Routed IP over ATM VCMUX RFC 1483 Classical IP over ATM RFC 1577 PPP over Ethernet VCMUX RFC 2516 PPP over Ethernet LLCSNAP RFC 2516 8 PVCs VPI VCI range 0 255 0 65535 Encapsulation hunting of up to 8 pre defined VPI VCI encapsu...

Page 63: ...d supports up to 253 addresses DHCP client WAN DHCP relay PPP auto PAP and CHAP DNS proxy NAT NAPT Dynamic NAPT ALG support Wild Card DMZ Virtual server VPN pass through IPSec ESP Tunnel mode L2TP PPTP Bridge filtering ICMP IGMP MAC address spoofing Auto VPI VCI PPPoE PPPoA detection Multiple PPP sessions per PVC Management HTTP client and server Password protection ...

Page 64: ...t Restore to Factory defaults via Web or hardware reset Operating System Support Supports Windows 95 98 2000 Me SE XP Linux Mac OS 8 5 and above Environmental Operating Range Operating temperature 0 40 degrees Celsius Humidity 0 90 non condensing Power Dissipation The typical approximated power dissipation is as below Power Dissipation for RL800C Active typical 6 24W Power Input 12V 1 2A ...

Page 65: ...63 Weight 545g Dimensions 20 x 14 8 x 3 9 cm LxWxH Electromagnetic Compatibility CE R TTE FCC part 15 class B and FCC part 68 Safety CSA UL 1950 EN60950 ...

Page 66: ...ymmetrical refers to its unequal data rates for downloading and uploading the download rate is higher than the upload rate The asymmetrical rates benefit home users because they typically download much more data from the Internet than they upload analog Of data having a form is analogous to the data s original waveform The voice component in DSL is an analog signal See also digital ATM Asynchronou...

Page 67: ...re addresses of the devices at each location Bridging contrasts with routing which can add more intelligence to data transfers by using network addresses instead The ADSL Barricade can perform both routing and bridging Typically when both functions are enabled the device routes IP data and bridges all other types of data See also routing broadband A telecommunications technology that can send diff...

Page 68: ...HCP server Dynamic Host Configuration Protocol server A DHCP server is a computer that is responsible for assigning IP addresses to the computers on a LAN See DHCP digital Of data having a form based on discrete values expressed as binary numbers 0 s and 1 s The data component in DSL is a digital signal See also analog DNS Domain Name System The DNS maps domain names into IP addresses DNS informat...

Page 69: ...net to the user DSL Digital Subscriber Line A technology that allows both digital data and analog voice signals to travel over existing copper telephone lines Ethernet The most commonly installed computer network technology usually using twisted pair wiring Ethernet data rates are 10 Mbps and 100 Mbps See also BASE T 100BASE T twisted pair filtering To screen out selected types of data based on fi...

Page 70: ...teway routers communicate with each other Gbps Abbreviation for Gigabits GIG uh bits per second or one billion bits per second Internet data rates are often expressed in Gbps GRE Generic Routing Encapsulation 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 un...

Page 71: ...rmation about its membership in multicast groups with adjacent routers A multicast group of computers is one whose members have designated as interested in receiving specific content from the others Multicasting to an IGMP group can be used to simultaneously update the address books of a group of mobile computer users or to send company newsletters to a distribution list in line filter See Microfi...

Page 72: ...e difficult to remember they usually have an associated domain name that can be specified instead See also domain name network mask ISP Internet Service Provider A company that provides Internet access to its customers usually for a fee LAN Local Area Network A network limited to a small geographic area such as a home office or small building LED Light Emitting Diode An electronic light emitting d...

Page 73: ...microfilter See also splitterless NAT Network Address Translation A service performed by many routers that translates your network s publicly known IP address into a Private IP address for each computer on your LAN Only your router and your LAN know these addresses the outside world sees only the public IP address when talking to a computer on your LAN NAT rule A defined method for translating bet...

Page 74: ...Ethernet NICs is typically an RJ 45 connector See Ethernet RJ 45 packet Data transmitted on a network consists of units called packets Each packet contains a payload the data plus overhead information such as where it came from source address and where it should go destination address ping Packet Internet or Inter Network Groper A program used to verify whether the host associated with an IP addre...

Page 75: ...only one PPPoA interface per VC PPPoE Point to Point Protocol over Ethernet One of the two types of PPP interfaces you can define for a Virtual Circuit VC the other type being PPPoA You can define one or more PPPoE interfaces per VC protocol A set of rules governing the transmission of data In order for a data transmission to work both ends of the connection have to follow the rules of the protoco...

Page 76: ... performs routing is called a router rule See filtering rule NAT rule SDNS Secondary Domain Name System server A DNS server that can be used if the primary DSN server is not available See DNS SNMP Simple Network Management Protocol The TCP IP protocol used for network management splitter A device that splits off the voice component of the DSL signal to a separate line so that data and telephone se...

Page 77: ... which selects some of the computers of the network and excludes all others The subnet s computers remain physically connected to the rest of the parent network but they are treated as though they were on a separate network See also network mask subnet mask A mask that defines a subnet See also network mask TCP See TCP IP TCP IP Transmission Control Protocol Internet Protocol The basic protocols u...

Page 78: ...resented instead as a maximum hop count each router that receives a packet decrements this field by one When the TTL reaches zero the packet is discarded twisted pair The ordinary copper telephone wiring long used by telephone 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 p...

Page 79: ...arricade WAN refers to the Internet Web browser A software program that uses Hyper Text Transfer Protocol HTTP to download information from and upload to web sites and displays the information which may consist of text graphic images audio or video to the user Web browsers use Hyper Text Transfer Protocol HTTP Popular web browsers include Netscape Navigator and Microsoft Internet Explorer See also...

Page 80: ...nformation from remote users through web browsers A web site typically consists of web pages that contain text graphics and hyperlinks See also hyperlink web page WWW World Wide Web Also called the Web Collective term for all web sites anywhere in the world that can be accessed via the Internet ...

Page 81: ...equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Note In order to maintain compliance with the limits for a Class B digital device you are required to use a quality interface cable when connecting to this device Changes or modifications not expressly approved by our company could void the ...

Page 82: ...elephone network the telephone company may request you to remove the equipment from the network until the problem is resolved No repairs may be done by the customer This equipment cannot be used on telephone company provided coin service Connection to Party Line Service is subject to state tariffs When programming and or making test calls to emergency numbers Remain on the line and briefly explain...

Page 83: ...mily standard according to EN 55024 1998 Electrostatic Discharge according to EN 61000 4 2 1995 Contact Discharge 4 kV Air Discharge 8 kV Radio frequency electromagnetic field according to EN 61000 4 3 1996 80 1000 MHz with 1 kHz AM 80 Modulation 3 V m Electrical fast transient burst according to EN 61000 4 4 1995 AC DC power supply 1 kV Data Signal lines 0 5 kV Surge immunity test according to EN...

Page 84: ... die Netzanschlußleitung so daß niemand darüber fallen kann Es sollte auch nichts auf der Leitung abgestellt werden 10 Alle Hinweise und Warnungen die sich am Gerät befinden sind zu beachten 11 Wird das Gerät über einen längeren Zeitraum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer Überspannung eine Beschädigung vermieden 12 Durch die Lüftungsöffnungen dürfen niemal...

Page 85: ...fweist 15 Stellen Sie sicher daß die Stromversorgung dieses Gerätes nach der EN 60950 geprüft ist Ausgangswerte der Stromversorgung sollten die Werte von AC 7 5 8V 50 60Hz nicht über oder unterschreiten sowie den minimalen Strom von 1A nicht unterschreiten Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70dB A oder weniger ...

Page 86: ...nty The Limited Lifetime warranty covers a product during the Life of that Product which is defined as a period of 5 years from the date of purchase of the product from SMC or its authorized reseller All products that are replaced become the property of SMC Replacement products may be either new or reconditioned Any replaced or repaired product carries either a 30 day limited warranty or the remai...

Page 87: ... OTHER HAZARD LIMITATION OF LIABILITY IN NO EVENT WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE SHALL SMC BE LIABLE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE LOSS OF BUSINESS OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN I...

Page 88: ...All information is subject to change without notice Limitation of Liability In no event whether based in contract or tort including negligence shall SMC be liable for incidental consequential indirect special or punitive damages of any kind or for loss of revenue loss of business or other financial loss arising out of or in connection with the sale installation maintenance use performance failure ...

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