Quick flash – Self test or software loading during power up.

Off – No power supplied to the unit. See “Troubleshooting” on page 1-38for more details.

Introduction 1-7

LINK (Orange) This LED indicator shows the condition of the LAN connection:

Off – No LAN connection detected.

On – LAN connected.

ISDN OK (Green) This LED indicator provides confirmation of the state of the ISDN line.

On – Indicates the OfficeConnect Remote is connected to a working ISDN line. Sometimes this LED does not light until the first call attempt is made.

Flashing – A fault condition has been identified on the ISDN line.

Off – No ISDN connection present.

ISDN1 and ISDN 2 (Yellow) These LED indicators provide confirmation that an ISDN call is in progress on ISDN Channel 1 or Channel 2. You are connected to a remote ISDN unit and are incurring ISDN call charges while this LED is lit. If the LED is flashing it indicates that a call is being made but a connection has not yet been made to the remote unit.

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3Com 510, 520, 530 manual Quick flash Self test or software loading during power up