Nortel Networks 1500 manual T1 CSU/DSU LEDs, T1 CSU/DSU LED Indicator

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Cabling the Switch

Figure 3-5 shows the T1 CSU/DSU LEDs. Look at the condition of the LEDs, then examine the corresponding LED tables to better understand the indications.

LED 4, Red

LED 2, Blue

LED 3, Green

LED 1, Yellow

Figure 3-5.	T1 CSU/DSU LEDs
Table 3-6.	T1 CSU/DSU LED Indicator
LED	Description

LED1, Yellow	Yellow alarm LED is lit when the far-end
	equipment is in the red alarm condition.

LED2, Blue	Blue alarm LED is lit when receiving an
	upstream failure denoted by an alarm
	indication signal (AIS).

LED3, Green	Normal operation.

LED4, Red	Red alarm is lit when a loss of signal (LOS) or
	out of frame (OOF) condition is detected on the
	receive signal.

All LEDs off	Port disabled.

3-11

Image 31

Contents Part No -B Rev February Restricted Rights Legend Accuracy NoticeCopyright 2000 Nortel Networks, Inc TrademarksContents Chapter Assigning a System Identity Chapter Extranet Access Client Installation Page Preface Documentation ConventionsUser Interface TextHelp Button Related Publications Related PublicationsNortel Networks Technical Publications Technical Solutions Center Telephone Number Nortel Networks Customer ServiceSwitch Introducing the Contivity Extranet SwitchAn Intranet and the Internet Make Up an Extranet Shows a front view of the Switch Components List Selecting a Site Chapter Preparing Your SiteHazardous Conditions Inside the Switch Safety GuidelinesSwitch Power ON/OFF Check the Voltage SwitchExternal Vent Cooling and Airflow Page Chapter Cabling the Switch Extranet Switch Back View Connecting the CablesCurrent Rating Power Cord RequirementsWall Outlet Connector Power Supply ConnectorLAN Interface Connections Connector PinoutsLAN Speed Selection DB26S-to-V.35 Cable Pinouts Single V.35 WAN Interface OptionalM0-SIGNAL Ground M1-SIGNAL Ground T1 CSU/DSU Cable Pinouts T1 CSU/DSU WAN Interface OptionalSerial Interface Cable Optional Multi-DB-9 and DB-25 Connector PinoutsUnderstanding the LEDs LAN Port LED IndicatorsLAN Port LEDs Single V.35 LEDs Single V.35 LED IndicatorsT1 CSU/DSU LEDs T1 CSU/DSU LED Indicator10/100BASE-TX LAN LEDs 10/100BASE-TX LAN LED Card IndicatorsChapter Assigning a System Identity Initial Configuration OptionsSubnet Mask Startup Configuration RequirementsDefault Gateway Optional Management IP AddressRunning the IP Configuration Utility IP Address Configuration UtilityRequirements Serial Number Search Display Assigning a System Identity Prerequisites Serial Interface ConfigurationProcedure Sample Serial Interface Display Platforms Supported Chapter Managing the SwitchDisplay Setting Recommended Web BrowsersPreparing for Configuration Configuration Alternatives Extranet Switch Welcome DisplaySwitch Welcome Display Registration Guided ConfigurationManage Extranet Switch Quick StartLogging in and Supplying a Password Quick Start Prerequisites Display Quick Start Configuration PrerequisitesRequired Environment Point-to-Point Tunnel Protocol Pptp tunnel access methodPost Configuration Testing Quick Start Configuration Display ConfigurationSubnet Mask Default GatewayInterfaces IP AddressPrivate PasswordPptp Users PublicConfirm Password AdministratorRemote User Static IP Address Time Automatic BackupDate and Time DateWindows Chapter Extranet Access Client InstallationPage Windows 98 and Windows NT Page Declaration of the Manufacturer or Importer Appendix a Specifications and CompliancePhysical Operating EnvironmentElectromagnetic Compatibility EMC Safety ComplianceHarmonics Statement of Conditions Appendix B Special NoticesPage Nortel Networks NA, Inc. Software License Agreement Page Special Notices Radius Remote Authentication Dial-In User Service Special Notices Page Numerics IndexIndex-2 Index-3