3Com DUA1770-0AAA04 manual Country Telephone Number Asia, Pacific Rim

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Returning Products for Repair

79

Returning Products Before you send a product directly to 3Com for repair, you must first

for Repairobtain an authorization number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.

You can obtain an authorization number (called an RMA) by entering the following URL into your Internet browser:

http://www.3com.com/support/en_US/repair

Alternatively, you can obtain an RMA by calling or faxing one of the following numbers:

Country	Telephone Number	Country	Telephone Number

Asia, Pacific Rim
From anywhere in this	+ 65 543 6500 phone
region call:	+ 65 543 6348 fax

Europe, Middle East and Africa
From anywhere in these	+44 (0)1442 435529
regions, call:

From the following countries, you may use the numbers shown:

Austria	01 7956 7124	Luxembourg	800 29880
Belgium (Flemish)	070 700 000	Netherlands	0900 777 7737
Belgium (French)	070 700 770	Norway	815 33 047
Denmark	7010 7289	Poland	00800 441 1357
Finland	01080 2783	Portugal	707 200 123
France	0825 809 622	South Africa	0800 991196
Germany	01805 404 747	Spain	9 021 60455
Hungary	06800 14466	Sweden	07711 14453
Ireland	1800 509359	Switzerland	08488 50112
Israel	1800 943 2632	U.K.	0870 241 3901
Italy	199 161346

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Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Setting UP for Management PIN-OUTS Page About this Guide Icon Description ConventionsConvention Description Documentation RelatedDocumentation documentation Directory as a whole to maintain the structure of the files Please include the following information when commentingSuperStack 3 Switch 4900 Series Getting Started Guide 3Com recommends that you copy the Docs/referenceguideIntroducing Introducing the Superstack 3 Switch 4900 Series Hardware Features Switches Switch 4900 front view Switch Front View DetailSwitch 4924 front view Ports cross-over Unit LEDs Power/Self Test LEDColor Indicates Port Status LEDs Module Status LEDsSwitch 4900 rear view Switch RearSwitch 4924 rear view Power SocketSupported by your Switch Default SettingsSwitch units, it is returned to these defaults Installing the Switch Choosing a Suitable Package ContentsSite Have been fitted Flow through the side panels of the SwitchRack-mounting Desk, or attach it to a wallFitting a bracket for rack-mounting Repeat steps 2 and 3 for the other side of the SwitchInterconnecting two Switch 4900 units Sequence Power-upPowering-up SwitchPower System output Options RJ-45 connector is now a grounded portThat contain alignment pins can cause damage to your Switch Your SwitchTransceivers Switch 4950 GbicOperation Approved GbicInserting a Gbic Transceiver into a Switch Fiber SC connector Type 4 Gbic with internal Eeprom fittedSwitch 4950 Gbic Operation Installing the Switch Setting UP for Management Overview Setting UpAutomatic IP Configuration Manual IP ConfigurationSetting UP for Management Pre-requisites Manually Configuring IP InformationConfiguring the Workstation with IP Information Connecting the Workstation to the SwitchSetting Up the Switch with IP Information Using Command Line Interface via Telnet Example top-level command line interface menu 19,200 baud Data bits Connecting a workstation to the Switch via the console portSetting Up the Switch with IP Information Viewing Configured IPAutomatically Pre-requisites Viewing IP Information via the Console Port Example top-level command line interface menu Refer to Setting Up Command Line Interface Management on CLI Management via Command LineNetwork Using Telnet Interface ManagementInterface Setting Up WebChoosing a Browser Http//xxx.xxx.xxx.xxx Over the NetworkDefault Users Setting Up SnmpPasswords Security Device User Modify operation on the web interface User Default Name Password Access LevelFor Technical Support information, see Appendix D Problem SolvingOn powering-up, the Power/Self Test LED lights yellow Solving ProblemsSolutions below Power LED does not lightFor further information about RMON, refer to Status ProblemsSolving Hardware Fan failure warning message is receivedUnit fails, no Snmp fan failure message is received Error message indicating that the Gbic transceiver is faultyIP Addressing Solving Communication ProblemsHow do you obtain a registered IP Address? Safety Information This must be approved for the country where it is used Important Safety InformationImportant Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX Schko ’information de Sécurité ImportanteAppendix a Safety Information 3CGBIC91 Gbic SX 3CGBIC92 Gbic LX Der Netzstecker muß die Norm CEE 7/7 erfüllen Schuko Wichtige SicherheitsinformationenWichtige Sicherheitsinformationen Appendix a Safety Information Null Modem Cable 9-pin to RS-232 25-pin PC-AT Serial CablePin to 9-pin Assignments ConnectorsModem Cable RJ-45 PinPin Number 10/100BASE-T 1000BASE-T Appendix B PIN-OUTS Same unless otherwise stated Physical DimensionsSafety Power ConsumptionStandards Supported Power SupplyProtocols Used for Administration Heat DissipationOnline Technical ServicesUsername anonymous From this region, enter the URL Asia, Pacific RimFrom this region, email Europe, Middle East and AfricaEurope, Middle East and Africa Asia, Pacific RimCountry Telephone Number Asia, Pacific Rim Country Telephone Number Latin America Numbers IndexPasswords Regulatory Notices