3Com Dual 56K User Manual

Also see for 3C888 - OfficeConnect Dual 56K LAN Modem Router: Getting started guide

Contents

3Com Dual 56K User Manual Manual pdf 16 page image

16 CHAPTER 1: INTRODUCTIONHardware Description The following is an overview of the Dual 56K LAN Modem hardware, including thefunction of the front panel LEDs and back panel connectors.Front Panel LEDDescriptionThe front panel contains the LEDs illustrated in Figure 5.Figure 5 Dual 56K LAN Modem Front PanelThe functions of the front panel LEDs are described in Table 4. These front panelLEDs indicate proper operation and display analog modem and Ethernet portactivity status.Table 4 Front Panel LED Indicator DefinitionsLED Color DescriptionAlert Amber Operational Status. Lit during power-on self-diagnostic testor after pressing the reset button.Off indicates that the unit has passed the diagnostic test andis working properly.Flashes if one or more of the diagnostics have failed or afterthe unit is placed in firmware download mode and is awaitingfirmware upgrade.Power Green Power Indicator. Remains lit as long as power is supplied tothe unit.Message Not implemented.AA (MODEM 1 or 2) Green Auto Answer. Shows the answer status for Modem 1 or 2,as follows: Flashes during an incoming call. Remains lit for the duration of the call. Off when the LAN Modem originates a call.CD (MODEM 1 or 2) Green Carrier Detect. Remains lit for the indicated modem if theDual 56K LAN Modem receives a valid data signal (carrier)from a remote modem (such as an ISP), indicating that datatransmission is possible.RD (MODEM 1 or 2) Green Received Data. Flashes when the indicated modem receivesdata from a remote site.SD (MODEM 1 or 2) Green Send Data. Flashes when the indicated modem sends data toa remote site.OH (MODEM 1 or 2) Green Off Hook. Remains lit when the indicated modem has goneoff hook.TX Green Ethernet Transmit Status. Flashes green when data is beingtransmitted to the Ethernet LAN from the Dual 56K LANModem.Off indicates that no data is being transmitted to the EthernetLAN from the Dual 56K LAN Modem.Alert PowerMessageRDAA CD SD OH RDAA CD SD OHOfficeConnect Dual 56k LAN Modem1TX COLL 2 3 4LAN StatusMODEM 2MODEM 1