Instruction/ maintenance manual of the product 6212 HP (Hewlett-Packard)
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Hotwire ® 6212 ADSL Router User’ s Guide Document Number 6212-A2-GB20-00 Ma y 2004.
2 Ma y 2004 6212- A2-GB20-00 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 B20-00 May 2004 3 Important Safety Instructions 1. Read and follo w all warning notices and instructions marked on the product or includ ed in the manual.
4 Ma y 2004 6212- A2-GB20-00 CE Marking When the product is marke d with the CE mark on the equipment label, a sup po r ting Declaration of Conf ormity may be do wnloaded from the P aradyne W orld Wi de W eb site at www.parad yne .co m. Select Suppor t -> T echni cal M anuals -> Declar ations of Conf or mity .
6212-A2-G B20-00 May 2004 5 Notice to Users of the United States Telephone Network The f ollowing notice applie s to v e rsions of 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 r ules and the req uirements adopted b y the Administrativ e Council f or T erminal Attachment (ACT A).
6 Ma y 2004 6212- A2-GB20-00 Notice to Users of the Canadian T elephone Network NO TICE: This equipment meets the applicab le Industr y Canada T erminal Equipment T echnical Specifications.
6212-A2-G B20-00 May 2004 7 Table of Contents Chapter 1 Introduction ...................................................... 9 1.1 Product Overvi ew ................................................................ 9 1.2 Featur es ......................
8 Ma y 2004 6212- A2-GB20-00 6.2 System Statistics .............................................................. 72 6.3 ATM statistics ................................................................... 75 Chapter 7 Diagnostics ......................
6212-A2-G B20-00 May 2004 9 Chapter 1 Introduction This chapter i ntroduces the Hotwire ® 6212 ADSL R outer . It includes a product overview , a description of the product’ s features and applic ations, and an explanatio n of the functions of the Front panel LED indictors.
10 May 2004 6212- A2-GB20-00 1.2 Features The ADSL R outer is a compact and high performance standalone .
6212-A2-GB20-00 May 2004 11 1.3 Application The figure below shows a possible appl ication of the router ..
12 May 2004 6212-A 2-GB20-00 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 Ethe.
6212-A2-GB20-00 May 2004 13 Chapter 2 Hardware Installation 2.1 Installation The Hardware installat ion procedure is explained below. Caution: Always disconnect all t elephone lines from the teleph one wall outlet before servicing or disassembling this device.
14 May 2004 6212- A2-GB20-00 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.
6212-A2-GB20-00 May 2004 15 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 yo u will see the follo wing screen. Click on Next to continue. (If the screen does n’t appear , browse the CD-R OM and double-click on INST ALL.
16 May 2004 6212-A 2-GB20-00 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 stallation is complete.
6212-A2-GB20-00 May 2004 17 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.
18 May 2004 6212-A 2-GB20-00 STEP 3 : When the screen appears as below , select Search for a suitable driver and click the Next button..
6212-A2-GB20-00 May 2004 19 STEP 4 : Select Specify a locatio n and click on the Next button. If you are installing t he software from a disk, insert the disk.
20 May 2004 6212-A 2-GB20-00 STEP 6 : Enter the correct file for y our operating system, select the ADIRN DIS.INF file, and click on the Open button. STEP 7 : When the screen below appears, click on the OK button.
6212-A2-GB20-00 May 2004 21 STEP 8 : When the screen below appears, click on the NEXT bu tton..
22 May 2004 6212-A 2-GB20-00 STEP 9 : Click the Finish button when prompted. Installation is complete..
6212-A2-GB20-00 May 2004 23 2.3 Uninstalling the USB Driver 2.3.1 Auto-Uninstallation If the software was installed with the auto-play driver , unin stall it by completing the f ollowing steps: STEP 1: Click on the Window s St art button and go to Progr ams>CT -562.
24 May 2004 6212-A 2-GB20-00 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 th e d r i v e r i s r em o v e d , a c o m p le t i o n m e s s a g e a p p e a rs . C l i c k o n F i n i s h t o c l o se the window .
6212-A2-GB20-00 May 2004 25 2.3.2 Manual Removal of the Driver If the driver was manually inst alled, it must be uninst alled manually . T o do th at, go to the Windows Device manager , choose ADI USB R emo te NDIS Network De vice, and delete it.
26 May 2004 6212-A 2-GB20-00 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 Na vigator . It is best to set your display resolution to 1024 x 768.
6212-A2-GB20-00 May 2004 27 STEP 2: Click on OK to submit the settings. R estart the computer when requested. 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 .
28 May 2004 6212-A 2-GB20-00 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 Inform ation from the Basic menu bar .
6212-A2-GB20-00 May 2004 29 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 Apply to submit the settings . If you change the pa ssword, make sure y ou keep a record of it in a safe place, as you wil l require it next t ime you log in.
30 May 2004 6212-A 2-GB20-00 4.3 ADSL Link Status T o view the ADSL lin k status, click on Link Status from the menu bar . The page includes t he 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-GB20-00 May 2004 31 4.4 WAN Setup Click on WAN Setup from the me nu bar to configure th e W AN interface for these services: RFC 1483 Bridged, RFC 1483 R outed, PPP oE, PPP oA, and MER. The following are the common settings to set up these services.
32 May 2004 6212- A2-GB20-00 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 B20-00 May 2004 33 4.4.3 PPPoE PPPoE provides sessi on authentication using either Pass word Authentication Protocol (PAP) or Challenge Handshake A uthentication Protocol (CHAP). Ses sion accounting is possible and conservation of bandwidth can be achi eved by closing down unused sessions.
34 May 2004 6212-A 2-GB20-00 4.4.4 PPPoA T o set up PPP oA, click on PPP oA, then confi gure the common fields and the foll owing 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-GB20-00 May 2004 35 4.6 Routing Click Routing Setup from the menu bar t o configure the routing function s. R outing 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 .
36 May 2004 6212-A 2-GB20-00 4.6.2 Static route configuration The Routing Setup field allows you to add, mo dify , and delete a static route. T ype the Destination Network ID and subnet mask, and choose a gateway method by which the packets will be forwarded to the destin ation network ID .
6212-A2-G B20-00 May 2004 37 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.
38 May 2004 6212-A 2-GB20-00 4.7 Save T o save the settings to flash memory , click Save & Reboot from the menu bar . In the main pane, click on Save . 4.8 Reboot T o reboot the router , click Save & Rebo ot from the menu bar . In the main pane, click on Reboot .
6212-A2-GB20-00 May 2004 39 4.9 Retrieve default settings T o retrieve the default s ettings, click Erase & Reboot fr om th e me n u b a r . I n th e ma in p a n e , click Erase and then click Reb oot .
40 May 2004 6212-A 2-GB20-00 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 t he remote central office DSLAM.
6212-A2-GB20-00 May 2004 41 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, click on En able, then click on the Set button. Th en you can proceed to create the VLAN groups.
42 May 2004 6212-A 2-GB20-00 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 click on the Start button.
6212-A2-GB20-00 May 2004 43 To add an entry, click on the Add button, and enter the fol lowing parameters. Cl ick Apply 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 is defined with the gatewa y address 192.
44 May 2004 6212-A 2-GB20-00 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, DHCP uses the BootP relay agent to forward DHCP packets.
6212-A2-GB20-00 May 2004 45 5.5 SNMP SNMP is a protocol for responding t o information and action request messages sent b y 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) o n a particular router .
46 May 2004 6212-A 2-GB20-00 T o configure the SNMP agent, c lick on the Configu re SNMP Agent button. After filli ng in the fields, click on Apply to submit the settings. 5.5.2 Modifying Traps Click on the T raps tab t o configure the traps. After selectin g the par ameters, click on Submit to apply the settings.
6212-A2-GB20-00 May 2004 47 5.5.3 Modifying Communities Click on the Communities tab to disp lay the communi ty entries. After fi lling in the par ameters, click on Submi t to apply the settings. There is no community set up by factory default. T o add or modify an entry , cli ck on the Configure Communit y button.
48 May 2004 6212-A 2-GB20-00 5.6 Firewall The Hotwire 6212 ADSL router provides packet filt ering and stateful pack 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 Attac k, IP Source R oute, and WinNuke Attack.
6212-A2-GB20-00 May 2004 49 5.6.1 View Firewall Actions Click Vi ew Actions to display the list of current ly configured firewall actions. Th e par ameters are as follows: Action ID : Item number . Interface : The interface the filter ing rule is created on.
50 May 2004 6212- A2-GB20-00 5.6.2 IP Filtering On the Firewall menu , click on Add to configure th e IP filterin g entries. Fill out the parameters below and click on Apply to submit the settings. The parameters are as follows: Pol ic y Pa ram et ers : Precedence : This number sets the priority level of the rule.
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52 May 2004 6212-A 2-GB20-00 5.7 NAT The NA T menu in the Ad vanced menu bar l ets you set up Static NA T Mapping a nd Port R ange Mapping. 5.7.1 Static NAT Mapping Static NA T Mapping allows a pool of local IP addresses to share a public IP address. It is a form of NA T th at maps multiple Private IP addresses to a single Pu blic IP address.
6212-A2-GB20-00 May 2004 53 5.7.2 Port Range Mapping The P ort Range Mapping is used to set up the vi rtual serv er . A virtual server has two access ports: public and private. The public port is the open port where Internet users access the virtual server .
54 May 2004 6212-A 2-GB20-00 Fill out the fo llowing fields and click on Ap ply to submit the setti ngs. 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 B20-00 May 2004 55 5.8.1 Configure Interface T o configure an interface, select it by clickin g in the b utton next to it on the screen. Then click on the Configure Inter face button at the bottom of the screen. Note the following: Interfaces: Interface eth0 displays the LAN port status.
56 May 2004 6212-A 2-GB20-00 The following is an example screen displayed for the LA N interface (e th0) after the u ser chooses eth0 and clicks on th e Configure Interface button.
6212-A2-GB20-00 May 2004 57 5.8.2 DNS & Default Gateway T o configure the DNS and default gateway , comple te the following steps. STEP 1: Click on Configu re in the menu bar . STEP 2: Click on DNS and default gat eway at the bottom of the configur ation page.
58 May 2004 6212-A 2-GB20-00 5.8.3 NAT T o enable NA T on an interface, complete the f ollowing steps. 1. Check the Enable Nat box. 2. Select the interface u sing the Interfa ce Name pull down menu. 3. Click on the Apply button. 4. Click on the Con tinue button.
6212-A2-GB20-00 May 2004 59 5.9 VCC This screen lists all curren t VCC entries in th e middle of the screen. From this screen you ca n also: List IP oA, Delete Encaps ulation, Add a V CC, Delete a VCC, and Show VCC quality . 5.9.1 List IPoA T o list IP over A TM info rmation click on the List IPoA button.
60 May 2004 6212- A2-GB20-00 5.9.2 Delete Encapsulation T o delete encapsulation , select a VCC entry and then click on the 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. The VCC screen appears.
6212-A2-GB20-00 May 2004 61 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.
62 May 2004 6212-A 2-GB20-00.
6212-A2-GB20-00 May 2004 63 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 the delete button. 5.9.5 Show VCC quality T o view information regardin g the VCC quality , click on the Show VCC Quality b utton.
64 May 2004 6212-A 2-GB20-00 5.9.7 PPPoA The PPPoA p age is accessed by clicking on Conf igure 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-GB20-00 May 2004 65 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 routers. 5.10.1 Add an IGMP entry T o add an IGMP pro xy , complete the following steps.
66 May 2004 6212-A 2-GB20-00 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 list, then click on Delete . 5.11 Bridging 5.11.1 Bridge The Bridge window displays the co nfigured Bridging PVC entri e s of the interfaces.
6212-A2-GB20-00 May 2004 67 GroupInfo: This configur es the LAN packets that will travel through the LAN in terface to the selected WAN interfaces.
68 May 2004 6212-A 2-GB20-00 Disable: Select thi s command from the Bridgin g 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-GB20-00 May 2004 69 5.11.3 View STP parameters T o view the STP parame ters, click on the STP Parameters tab at the bottom of the Spanning T ree screen.
70 May 2004 6212-A 2-GB20-00 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-GB20-00 May 2004 71 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 .
72 May 2004 6212- A2-GB20-00 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-GB20-00 May 2004 73 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.
74 May 2004 6212-A 2-GB20-00 6.2.2 TCP-IP T o v i e w T C P / I P s t a t istics, click on the TCP-IP tab at the top of the S ystem Statistics page. The TCP- IP page displays the IP statistics, UDP st a tistics, TCP statistics, and ICMP s tatistics.
6212-A2-GB20-00 May 2004 75 6.2.3 DHCP-Lease T o view DHCP lease statistics, click on th e DHCP-Lease tab at the top of t h e System 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 Statisti cs.
76 May 2004 6212-A 2-GB20-00 6.3.2 Encapsulation Click on the SNDCP (Sub-Network Depende ncy Convergency Protocol) tab to display encapsulation stat istics.
6212-A2-GB20-00 May 2004 77 Chapter 7 Diagnostics T o access the Diagnostics screen, click on the Diagn ostics button on the menu b ar . 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 .
78 May 2004 6212-A 2-GB20-00 7.2 Ping A Ping test is used to verify the stat us of a network connection after the RIP or static 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.
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80 May 2004 6212-A 2-GB20-00 Chapter 8 Firmware Upgrade There are three methods for upgr ading to a new firmw are version. The procedures for upgrading the firm ware by W eb, Auto-upgr ade software, a nd manual upload are explained below . 8.1 TFTP Upgrade Via Web T o access the TFTP configur ation pa ge complete the following st eps: 1.
6212-A2-GB20-00 May 2004 81 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 Router to a PC using the LAN ca bl e.
82 May 2004 6212-A 2-GB20-00 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 fil e name has extention, also t ype the extension. Example: put firmware app STEP 10: After a moment, the file should begin tr ansferring.
6212-A2-GB20-00 May 2004 83 • • Chapter 9 Accessing the Logging Record The router allows accessing the log record in ASCII text format w ith the following information : A timestamp of each log entry Information about the following: PPP A uthentication, PPP Negotiation, PPP oE Eve nts, IPCP Configur ation, T CP/IP Configur ation.
84 May 2004 6212-A 2-GB20-00 3. When prompted, press the Enter key to skip the login name, and enter th e Password :(the default password is 12345). 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-GB20-00 May 2004 85 Log Record From FTP The following steps des cribe how to load the log fil e from FTP . STEP 1: Connect the router to a PC using the LAN port. Set the PC to the same subnet as the router (the default router address is 192.168.
86 May 2004 6212-A 2-GB20-00 The message T ransfer complete appears when the file is loaded. STEP 9: Open the file from the di rectory where it is loade d. 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 B20-00 May 2004 87 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.
88 May 2004 6212- A2-GB20-00 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 PA.
6212-A2-G B20-00 May 2004 89 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 nu.
90 May 2004 6212- A2-GB20-00 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 Admin; user name is not set up .
6212-A2-G B20-00 May 2004 91 Glossary . 100BaseT: A 100 Mbps Ether net standard that uses twisted-pair wiri ng. 10BaseT : A 10 Mbps Ethernet standard th at uses twisted-pai r wiring. address: The symbol (usu ally numeric) identifying an interface at tached to a network.
92 May 2004 6212- A2-GB20-00 BERT: Bit Error R ate T est. A test that compares a received pa ttern with a known tr ansmitted pattern to determine the qu ality . Bit: A binary digit, with the v alue of –0 or –1. boot: Start a device. Bps: Bits per second.
6212-A2-G B20-00 May 2004 93 data rate: The speed measured in bits per second that data is tr ansferred over the carrier line. Default: A pre-defined original value.
94 May 2004 6212- A2-GB20-00 error control: An al gorithm used to detect and correct data transmission 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 B20-00 May 2004 95 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.
96 May 2004 6212- A2-GB20-00 local loopback test: An analog loopback test that loops a device’ s transmitter output back to receiver 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 B20-00 May 2004 97 NIC: A Network Interface Card is a card installed in a device to provide network communication capabilities to and from that device. 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.
98 May 2004 6212- A2-GB20-00 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 ommun ication from a remote location or facility th rough a data link.
6212-A2-G B20-00 May 2004 99 SNMP: Simple Network Management Protoc ol. Protocol for open networking management. static route: A route that is permanent ra ther than a route that is dynamically assigned by another r outer . STP: Shielded T wisted Pair .
100 May 2004 6212-A2-GB20-00 upload: T o receive a file transmitted over a network. URL: Uniform R esource Locator . An Intern et standard ad dressing protocol for describing the location and access meth od of a resource on the Internet. USB: Universal Serial Bus.
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An important point after buying a device HP (Hewlett-Packard) 6212 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought HP (Hewlett-Packard) 6212 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data HP (Hewlett-Packard) 6212 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, HP (Hewlett-Packard) 6212 you will learn all the available features of the product, as well as information on its operation. The information that you get HP (Hewlett-Packard) 6212 will certainly help you make a decision on the purchase.
If you already are a holder of HP (Hewlett-Packard) 6212, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime HP (Hewlett-Packard) 6212.
However, one of the most important roles played by the user manual is to help in solving problems with HP (Hewlett-Packard) 6212. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device HP (Hewlett-Packard) 6212 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
