Paradyneメーカー6212の使用説明書/サービス説明書
ページ先へ移動 of 102
Hotwire ® 6212 ADSL Router User’ s Guide Document Number 6212-A2-GB20-20 July 2004.
2 July 2004 6212- A2-GB20-20 Copyright © 2004 P aradyne Corporation. All rights reserved. Printed in U.S.A. Notice This publication is protected by f ederal cop yright law .
6212-A2-G B20-20 July 2004 3 Important Safety Instructions 1. Read and follo w all warning notices and inst ructions marked on the produ ct or included in the manual.
4 July 2004 6212- A2-GB20-20 CE Marking When the product is marke d with the CE mark on the equipment label, a supporting Declaration of Conf ormity may be do wnloaded from the P aradyne World Wide W eb site at www.parad yne .co m. Select Suppor t -> T echnical Man uals -> Declarations of Conf or mity .
6212-A2-G B20-20 July 2004 5 Notice to Users of the United States Telephone Network The f ollowing notice a pplie s to versions o f the modem that ha ve been FCC P ar t 68 approv ed. This equipment complies with P ar t 68 of t he FCC rules and the requirements adopted b y the Administrativ e Council f or T erminal Attachment (A CT A).
6 July 2004 6212- A2-GB20-20 Notice to Users of the Canadian T elephone Network NO TICE: This equipment meets the applicab le Industry Canada T erminal Equipment T echnical Specifications.
6212-A2-G B20-20 July 2004 7 Table of Contents Chapter 1 Introduction .................................................... 10 1.1 Product Ov erview .............................................................. 10 1.2 Featur es .......................
8 July 2004 6212- A2-GB20-20 5.3 DHCP .............................................................................. 43 5.3.1 Enable DH CP .................................................................... 44 5.3.2 Disable th e DHCP ................
6212-A2-G B20-20 July 2004 9 6.2.3 DHCP-Lease ..................................................................... 77 6.3 ATM statistics ................................................................... 77 6.3.1 AAL5 ...............................
10 July 2004 6212- A2-GB20-20 Chapter 1 Introduction This chapter i ntroduces the Hotwire ® 6212 ADSL R outer . It includes a product ove rview , a description of the product’ s features and applic ations, and an explanatio n of the functions of the Front panel LED indictors.
6212-A2-G B20-20 July 2004 11 1.2 Features The ADSL R outer is a co mpact and high performance stan dalo.
12 July 2004 6212- A2-GB20-20 1.3 Application The figure below shows a possible appl ication of the router ..
6212-A2-G B20-20 July 2004 13 1.4 Front Panel LED Indicators LED Indicator Color Mode Function Green On Power is supplied Power Off Power is not supplied On An Ethernet lin k is established Off An Eth.
14 July 2004 6212- A2-GB20-20 Chapter 2 Hardware Installation 2.1 Installation The Hardware installat i on procedure is explained below. Caution: Always disconnect all t elephone lines from th e telephone wall outlet bef ore servicing or disassembling this device.
6212-A2-G B20-20 July 2004 15 2.2 Installing the USB Driver Before you connect your router’ s USB cable to your PC, you must load the ADSL USB drivers and configure the device via the LAN port us ing W eb management.
16 July 2004 6212- A2-GB20-20 2.2.1 Auto Installation STEP 1: Insert the CD-ROM disc for the ADSL USB router . STEP 2: The CD-ROM wi ll auto-play and you will see the following screen. Cli ck on Next to continue. (If the screen does n’t appear , browse the CD-R OM and double-click on INST ALL.
6212-A2-G B20-20 July 2004 17 STEP 3: When prompted by the message shown below , connect your router to a USB port of your PC. Then click on OK. STEP 4: A completion message appears when the in st allation is complete.
18 July 2004 6212- A2-GB20-20 2.2.2 Manual Installation T o connect the router to a PC using the USB interface, you need to use a standard USB cable and install the USB in terface software.
6212-A2-G B20-20 July 2004 19 STEP 3 : When the screen appears as below , select Search for a suitable driver and click the Next button..
20 July 2004 6212- A2-GB20-20 STEP 4 : Select Specify a loca tion and click on the Next button. If you are installing t he software from a disk, insert the disk.
6212-A2-G B20-20 July 2004 21 STEP 6 : Enter the correct file for y our oper ating system, select the ADIRN DIS.INF file, a nd click on the Open button.
22 July 2004 6212- A2-GB20-20 STEP 8 : When the screen below appears, click on the NEXT butt on..
6212-A2-G B20-20 July 2004 23 STEP 9 : Click the Finish button when prompted. Installation is complete..
24 July 2004 6212- A2-GB20-20 Note: At the end of the installation, a warning message of digital signatiure may appear . Click on Y es to close the message and compl ete the installation.
6212-A2-G B20-20 July 2004 25 2.3 Uninstalling the USB Driver 2.3.1 Auto-Uninstallation If the software was installed with the auto-play driver , uninstall it by complet ing the following steps: STEP 1: Click on the Window s Star t button and go to Progr ams>CT -562.
26 July 2004 6212- A2-GB20-20 STEP 3: When prompted by the message show n below , disconnect the USB cable from your PC and click on the OK button. STEP 4: W h e n t h e d r i v e r i s r e m o v e d , a c o m p l e t i o n m e s s a g e a p p e a r s .
6212-A2-G B20-20 July 2004 27 2.3.2 Manual Removal of the Driver If the driver was manually inst alled, it mu st be un installed manually . T o do that, go to th e Windows Device manager , choose ADI USB R emo te NDIS Network Device, and del ete it.
28 July 2004 6212- A2-GB20-20 Chapter 3 Login Via the Web Browser This section describes how to manage the router via a web browser from the remote end. Y ou can use a web browser such as Microsoft Internet Ex plorer , or Netscape Navigator . It is best to set your display resolution to 1024 x 768.
6212-A2-G B20-20 July 2004 29 STEP 2: Click on OK to submit the settings. R estart the computer when requeste d. STEP 3: Start your Internet browser with the default IP address 192.168.1.1. 3.2 Login Procedure T o log on to the system from the W eb browser , follow the steps below: STEP1: Start your Internet browser .
30 July 2004 6212- A2-GB20-20 Chapter 4 Basic Configuration From the Basic menu bar you can change passwords, configure the W AN/LAN interfaces, set up routing, save settings, reboot the router , and retrieve the factor y default settings. 4.1 Software Version Information Click on Versi on Info rmat ion from the Basic menu bar .
6212-A2-G B20-20 July 2004 31 4.2 Change the Password T o modify the password, click on Change P assword from the menu bar . T ype the old password and type the new pa ssword twice. Click on Appl y to submit the settings. If you change the password, make sure you keep a record of it in a safe place, as you will require it next t ime you log in.
32 July 2004 6212- A2-GB20-20 4.3 ADSL Link Status T o view the ADSL lin k status, click on Link Status from the menu bar . The page includes the following inf ormation: ADSL Line Status Shows the current status of the ADSL line ADSL Mode Shows the ADSL standard that is currently conf igured.
6212-A2-G B20-20 July 2004 33 4.4 WAN Setup Click on WAN Setu p from the menu bar to configure th e W AN interface for these services: RFC 1483 Bridged, RFC 1483 R outed, PPP oE, PPPoA, a nd MER. The following are the common settings to set up these services.
34 July 2004 6212- A2-GB20-20 4.4.1 RFC 1483 Bridged When using RFC 1483-style bridging , Ethernet frames ar e bridge d over ATM Virtual Circuits. The Ethernet frames are encapsulated using eith er LLC Encapsulation or VC Multiplexin g.
6212-A2-G B20-20 July 2004 35 4.4.3 PPPoE PPPoE provides sessi on authentication using either Pass word Authentication Protocol (PAP) or Challenge Handshake A uthentication Protocol (CHAP). Session accounting i s possible and conservation of bandwidth can be achi eved by closing down unused sessions.
36 July 2004 6212- A2-GB20-20 4.4.4 PPPoA T o set up PPP oA, click on P PPoA , then configure the com mon fields and the followi ng fields. Click on the Add button to add the entry . User name and Password: Used for remote customers to login upon di alup.
6212-A2-G B20-20 July 2004 37 4.6 Routing Click Routing Setup from the menu bar t o configure the rout ing functions. Routing functions includes RIP and static rou ting. 4.6.1 Enable RIP T o enable RIP , complete the foll owing steps: STEP 1: Click Routing Setup from the menu bar .
38 July 2004 6212- A2-GB20-20 4.6.2 Static route configuration The Routing Setup field allows you to add, mo dify , and delete a sta tic route. T ype the Destination Network ID and subnet mask, an d choose a gateway method by which the packets will be forwarded to the destin ation network ID .
6212-A2-G B20-20 July 2004 39 Add : T o add a static route, complete the following steps: STEP 1: Click on Routing Setup from the menu bar . STEP 2: Enter parameters for Des tination Network ID , Subnet Mask , Next Hop IP. STEP 3: Click on the AD D button.
40 July 2004 6212- A2-GB20-20 4.7 Save T o sa ve the settings to fl ash memory , click Sa ve & R eboot from the menu bar . In the main pane, click on Save . 4.8 Reboot T o reboot the router , click Save & Rebo ot fro m the menu bar . In the main pane, click on Reboot .
6212-A2-G B20-20 July 2004 41 4.9 Retrieve default settings T o retrieve the default s ettings, click Erase & Reboot fr o m t h e m e n u b a r . I n t h e m a i n p a n e , click Erase and then click Reb oot .
42 July 2004 6212- A2-GB20-20 Chapter 5 Advanced Configuration 5.1 ADSL Mode There are four ADSL modes: MUL TI, T1.413, G. DMT , and G.LITE. The default ADSL mode i s MUL TI. MUL TI mode enables the device to auto matically adjust its mode to match the remote central office DSLAM.
6212-A2-G B20-20 July 2004 43 5.2 VLAN T o configure the VLAN f unction, click on VLAN f r o m t h e A d v a n c e d m e n u b a r . V L A N i s d i s a b l e d by factory default . T o enable it, clic k on En able, then click on the Set button. Th en you can proceed to create the VLAN groups.
44 July 2004 6212- A2-GB20-20 5.3.1 Enable DHCP STEP 1: Click on DHCP from the menu bar . There is a defa ult DHCP entry on the screen. The default settings are as follows: STEP 2: T o enable the DHCP entry , choose the entry and cl ick on the Start button.
6212-A2-G B20-20 July 2004 45 To add an entry, click on the Add button, a nd enter the following par ameters. Click A pply to submit the settings. Interface: eth0/usb0. This configures the interface that will pro vide the DHCP function. By factory default, the e ntry for interface eth0 i s defined with the gatew ay address 192.
46 July 2004 6212- A2-GB20-20 5.3.2 Disable the DHCP STEP 1: Click on DHCP from the menu bar . STEP 2: Choose a DHCP entry , then click on Delete . 5.4 DHCP Relay The DHCP pack et format is based on a BootP pa cket. As a result, DH CP uses the BootP relay agent to forward DHCP packets.
6212-A2-G B20-20 July 2004 47 5.5 SNMP SNMP is a protocol for responding t o information and action request me ssages sent by a network management station. The messages ex changed enable you to access and manage objects in an active or in active (stored) Mana gement Information Base (MIB) on a parti cular router .
48 July 2004 6212- A2-GB20-20 T o configure the SNMP agent, c lick on the Configure SNM P Agent button. After f illing in the fields, click on Apply to submit the settings. 5.5.2 Modifying Traps Click on the T raps tab t o confi gure the tr aps. After selecting the parameters, click on Su bmit to apply the settings.
6212-A2-G B20-20 July 2004 49 5.5.3 Modifying Communities Click on the Communities tab to di splay the community e ntries. After filli ng in the par ameters, click on Submi t to apply the settings. There is no community set up by factory defa ult. T o add or modify an entry , click on the Configure Communit y button.
50 July 2004 6212- A2-GB20-20 5.6 Firewall The Hotwire 6212 ADSL router provides packet filt ering and stateful pa ck et inspection. It has denial of service protection agains t attacks suc h as ICMP Flood, Pi ng of Death, IP spoofing, P ort Scans, Land Attack , T ear Drop At tack, IP Source R oute, and WinNuke A ttack.
6212-A2-G B20-20 July 2004 51 5.6.1 View Firewall Actions Click Vi ew Actions to display the list of cu rrently configured firewall ac tions. The parameters are as follows: Action ID : Item number . Interface : The interface the filter ing rule is created on.
52 July 2004 6212- A2-GB20-20 5.6.2 IP Filtering On the Firewall menu , click on Add to configure th e IP filtering ent ries. Fill out the parameters below and click on Apply to submit the settings. The parameters are as follows: Pol ic y Pa ram e t er s : Precedence : This number sets the priority level of the rule.
6212-A2-G B20-20 July 2004 53.
54 July 2004 6212- A2-GB20-20 5.7 NAT The NA T menu in the Ad v anced menu bar l e ts you set up St ati c NA T Mapping and P ort Range Mapping. 5.7.1 Static NAT Mapping Static NA T Mapping allow s a pool of local IP addresses to share a public IP address.
6212-A2-G B20-20 July 2004 55 5.7.2 Port Range Mapping The P ort Range Mapping is used to set up the vi rtual server . A virtual server has two access ports: public and private. The public port is the open port where Internet users access the virtual server .
56 July 2004 6212- A2-GB20-20 Fill out the fo llowing fields and cli ck on Apply to submi t the settings. Public Address This is the public address Internet users access. Public Port From /Public Port T o Enter the public port ran ge. These ports will be mapped or redirected to the local ports of the virtual on the LAN.
6212-A2-G B20-20 July 2004 57 5.8.1 Configure Interface T o configure an interface, select it by clicking in the button next to i t on the screen. Then click on the Configure Inter face button at the bottom of th e screen. Note the following: Interfaces: Interface eth0 displays the LAN port status.
58 July 2004 6212- A2-GB20-20 The following is an example screen displayed for the LA N interface (e th0) after the us er chooses eth0 and clicks on th e Configure Interface button.
6212-A2-G B20-20 July 2004 59 5.8.2 DNS & Default Gateway T o configure the DNS and default gatewa y , complete the following steps. STEP 1: Click on Configu re in th e menu bar . STEP 2: Click on DNS and default gat eway at t he bottom of the configur ation page.
60 July 2004 6212- A2-GB20-20 5.8.3 NAT T o enable NA T on an interface, complete t he following st eps. 1. Check the Enable Nat box. 2. Select the interface u sing the Inte rface Name pull down menu. 3. Click on the Apply button. 4. Click on the Con tinue button.
6212-A2-G B20-20 July 2004 61 5.9 VCC This screen lists all curren t VCC entries in th e middle of the screen. From this screen you can also: List IP oA, Delete Encaps ulation, Ad d a VCC, Delete a VCC, and Show VCC quality . 5.9.1 List IPoA T o list IP over A TM info rmat ion click on the List IPoA button.
62 July 2004 6212- A2-GB20-20 5.9.2 Delete Encapsulation T o delete encapsulation , select a VCC entry an d then click on th e Delete Encap button. 5.9.3 Add a VCC T o add a VCC entry , complete the following steps. STEP 1: Click on the Add VCC butt on.
6212-A2-G B20-20 July 2004 63 Service Type: cbr (Constant Bit Rate) rtvbr (Real Time Variable Bit Rate) Nrtvbr (Non-Real Time Variable Bit Rate) Ubr (Unspecified Bi t Rate) Supports real-time applications requiring a fixed amount of bandwidth. The applicatio ns produce data at regular intervals such as a video stream.
64 July 2004 6212- A2-GB20-20.
6212-A2-G B20-20 July 2004 65 5.9.4 Delete a VCC T o delete a VCC entry , select the entry from the l ist of VCCs and then click on t he delete button. 5.9.5 Show VCC quality T o view information regardin g the VCC quality , click on the Show VCC Quality button.
66 July 2004 6212- A2-GB20-20 5.9.7 PPPoA The PPPoA p age is accessed by clicking on Config ure in the Adv anced menu bar . T o start, stop , delete, or set as default a PPP oA entry , first sele ct the entry from the List o f P P P o A e n t r i e s , a n d then click on the corresponding bu tton at the bottom of the page.
6212-A2-G B20-20 July 2004 67 5.10 IGMP IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast rou ters. 5.10.1 Add an IGMP entry T o add an IGMP pro xy , complete the following steps.
68 July 2004 6212- A2-GB20-20 STEP 4: Click on Apply to acti vate the par ameters. 5.10.2 Delete an IGMP entry To delete an entry , se lect an entry from the l ist, then click on Delete . 5.11 Bridging 5.11.1 Bridge The Bridge window displays the co nfigured Bridging PVC e ntrie s of the interfaces.
6212-A2-G B20-20 July 2004 69 GroupInfo: This configur es the LAN packets that will travel through th e LAN interface to the selected WAN interfaces.
70 July 2004 6212- A2-GB20-20 Disable: Select thi s command from the Bridging screen to disable the PVCs but retain the parameters so that they can be enabled later . 5.11.2 Spanning tree T o access the spanning tree menu, click on the Spanning Tree tab at th e top of the Bridging screen.
6212-A2-G B20-20 July 2004 71 5.11.3 View STP paramet ers T o view the STP parame ters, click on the STP Parameters tab at the bottom of the Spanning T ree screen.
72 July 2004 6212- A2-GB20-20 5.11.4 To configure STP parameters STEP 1: Click on the Spanning Tree tab at the top of the Bridging screen. STEP 2: Click on the C onfigure Port button. STEP 3: Configure the parameters. STEP 4: Click on the A pply button.
6212-A2-G B20-20 July 2004 73 Chapter 6 Performance monitoring 6.1 ADSL Link Status T o view the ADSL lin k status, click on Link Status on the tool bar .
74 July 2004 6212- A2-GB20-20 ADSL Line Status Shows the current status of the ADSL line. ADSL Mode Shows the ADSL standard that is currently configured. Upstream Upstream data rate negotiated by DSL link (kbs). Downstream Downstream data rate negotiated by DSL link (kbs).
6212-A2-G B20-20 July 2004 75 The following in formation is displayed: Interface Name The name of the interface. Admin Status Indicates whether the interface is Up or Down. Octets In The number of Octets (bytes) recieved. Unicast PktsIn The number of unicast packets received.
76 July 2004 6212- A2-GB20-20 6.2.2 TCP-IP T o v i e w T C P / I P s t a t ist ics, click on the TCP-IP tab at the to p of the System Statistics page. The TCP- IP page displays the IP statistics, UDP st atistics, TCP statistics, and ICMP statistics.
6212-A2-G B20-20 July 2004 77 6.2.3 DHCP-Lease T o view DHCP lease statistics, click on th e DHCP-Lease ta b at the top of th e S ystem Statistics page. The DHCP-Lease page shows the PCs that obtained an IP a ddress from the DHCP pool. 6.3 ATM statistics Click on ATM Statistics on the menu-bar to di splay the A TM Stati stics.
78 July 2004 6212- A2-GB20-20 6.3.2 Encapsulation Click on the SNDCP (Sub-Network Depende ncy Converge ncy Protocol) tab to dis play encapsulation stat ist ics.
6212-A2-G B20-20 July 2004 79 Chapter 7 Diagnostics T o access the Diagnostics screen, click on the Diagn ostics button on the menu bar . The Diagnostics screen has two test functi ons: OAM Loopback and Ping test. 7.1 OAM Loopback STEP 1: click on the Diagnostics button, on the menu bar .
80 July 2004 6212- A2-GB20-20 7.2 Ping A Ping test is used to verif y the status of a network conne ction after the RIP or stati c route function is enabled. Ping sends a request mess age to the host and w aits for a return message. This diagnostic fu nction can verify if the remote host is reachable.
6212-A2-G B20-20 July 2004 81.
82 July 2004 6212- A2-GB20-20 Chapter 8 Firmware Upgrade There are three methods for upgr ading to a new firm ware version. The procedures for upgrading the firm ware by W eb, Auto-upgr ade softw are, and manual upload are explained below . 8.1 TFTP Upgrade Via Web T o access the TFTP configur ation pa ge complete the following steps: 1.
6212-A2-G B20-20 July 2004 83 8.2 Upgrade Via FTP Follow the steps below to upgrade the firm ware version of the Hotwire 6212 R outer: STEP 1: Connect t he Ro uter to a PC using the LAN ca ble. Set the P C to the same subnet as the router (192.168.1.1).
84 July 2004 6212- A2-GB20-20 STEP 8: After you see the message T ype set to I, type: ha STEP 9: After you see the message Hash mark printing, type: put <filename > app (if the file name has extention, also t ype the extension. Example: put firmware app STEP 10: After a moment, the file sh ould begin transferring.
6212-A2-G B20-20 July 2004 85 • • Chapter 9 Accessing the Logging Record The router allows accessing the log record in ASCII t ext format with the follow ing informat ion: A timestamp of each log entry Information about the following: P PP Authenti cation, PPP Negoti ation, PPP oE Even ts, IPCP Configur ati on, T CP/IP Confi gur ation.
86 July 2004 6212- A2-GB20-20 3. When prompted, enter root for the login name, and 12345 for the password (if you are using the default pass word). 4. At the prompt [root@home] enter the command logger 5. At the prompt [root@logger] enter the co mmand log -o all 6.
6212-A2-G B20-20 July 2004 87 Log Record From FTP The following steps des cribe how to load the log fi le from FTP . STEP 1: Connect the router to a PC using the LAN port. Set the P C to the same subnet as the router (the default router address is 192.
88 July 2004 6212- A2-GB20-20 The message T ransfer complete appears when the file is loaded. STEP 9: Open the file from the di rectory where it is loaded. A sample file is shown below. The first line shows an incoming packet, the subsequ ent lines show information about the packet.
6212-A2-G B20-20 July 2004 89 Appendix A: Specifications WAN interface (one ADSL port) ADSL standa rd ANSI T1.413 Issu e 2, ITU- T G.992.1, ITU- T G.
90 July 2004 6212- A2-GB20-20 Routing functions IP static route Y es RIP and RIPv2 Y es ARP Y es DNS, NA T/P A T Y es DHCP Server/DHCP R elay Y es Security Functions Authentication protocols P.
6212-A2-G B20-20 July 2004 91 Appendix B: Pin Assignments Line port (RJ11) Pin Definition Pi n Definition 1 - 4 ADSL_RING 2 - 5 - 3 ADSL_TIP 6 - Pin Assignments of the RJ11 P ort LAN Port (RJ45) Pin n.
92 July 2004 6212- A2-GB20-20 Appendix C: Troubleshooting Event Checking Procedure or possible cause Unable to access the W eb management Check the LAN connection. Check your PC ’ s TCP/IP setup. W eb login reject Check your password. The default user name is root and the default password is 1234 5 .
6212-A2-G B20-20 July 2004 93 Glossary . 100BaseT: A 100 Mbps Ether net standard that uses twisted-pai r wiring. 10BaseT : A 10 Mbps Ethernet standard th at uses twisted-pai r wiri ng. address: The symbol (usu ally numeric) ident ifying an interface attached to a network.
94 July 2004 6212- A2-GB20-20 BERT: Bit Error R ate T est. A test that compares a receiv ed pattern with a known tr ansmitted pattern to determi ne the quality . Bit: A binary digit, with the v alue of –0 or –1. boot: Start a device. Bps: Bits per second.
6212-A2-G B20-20 July 2004 95 data rate: The speed measured in bits per second that data is tr ansferred over the carrier line. Default: A pre-defined original value.
96 July 2004 6212- A2-GB20-20 error control: An al gorithm used to detect and correct data tr ansmission errors. errored second: An item in performance measurement report, which pertains to a one second period with one or more errored blocks. Ethernet address: Another name for M AC address.
6212-A2-G B20-20 July 2004 97 ICMP: Internet Control Management Prot o col. An Internet protocol that allows for the generation of error me ssages, tests packets, and information messages related to IP . IDSL: A form of ISDN DSL using 2B1Q line code. IEEE: Institute of Electrical and Electronics Engineers.
98 July 2004 6212- A2-GB20-20 local loopback test: An analog loopback test that loops a device’ s transmitter output back to receive r input. loopback: A diagnostic procedure where a test message is sent back to its origination poin t, in order to isolate an equipment or data line problem.
6212-A2-G B20-20 July 2004 99 NIC: A Network Interface Card is a card installed in a device to provide network communication capabilit ies to and from th at dev ice. node: A connection or switching point in a network, also called a host. noise: Unw anted interference to a tr ansmitted signal by an outside source.
100 July 2004 6212- A2-GB20-20 PVC: Permanent Virtual Circuit. Virtual circ uit that is permanently established. QoS: Quality of Service. The ex pected data loss or latency . remote access: C ommunication from a remote location or facility through a data link.
6212-A2-G B20-20 July 2004 101 SNMP: Simple Network Management Protoc ol. Protocol for open networking management. static route: A route that is permanent r a ther than a route that is dynamically assigned by another r outer . STP: Shielded T wisted Pair .
102 July 2004 6212- A2-GB20-20 upload: T o receive a file transmitted over a network. URL: Uniform R esour ce Locator . An Intern et standard addressing protocol for describing the location and access meth od of a resource on the Internet. USB: Universal Serial Bus.
デバイスParadyne 6212の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Paradyne 6212をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはParadyne 6212の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Paradyne 6212の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Paradyne 6212で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Paradyne 6212を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はParadyne 6212の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Paradyne 6212に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちParadyne 6212デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
