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Cisco 1600 series Router

The are two common variants of the Cisco 1600 series that IFL sell are the 1603 and the 1605.

The 1603 has a single ethernet interface and ISDN port.

The 1605 router is similar to the 1603 except that it has two ethernet connections and the ISDN port is added as a separate slot in card in the back of the unit.

The LEDs on the 1600 series routers vary slightly from model to model, but will look similar to these diagrams:

Cisco 1603

Cisco 1605

SYSTEM PWR (Green) - The router is switched on and power is supplied.

SYSTEM OK (Green) - The router has booted successfully. This can blink during the boot cycle.

LAN ACT / ETH0 ACT / ETH1 ACT (Green) - Data is being sent or received on the relevant Ethernet interface.

LAN COL / ETH0 COL / ETH1 COL (Yellow) - Flashing LED indicates packet collisions on this Ethernet interface.

BRI0 B1 / WIC B1 (Green) - An ISDN call is being made on the first ISDN B-channel

BRI0 B2 / WIC B2 (Green) - An ISDN call is being made on the second ISDN B-channel

Both routers also have an "ISDN OK" light on the back of the router which can be used to diagnose ISDN problems. This light is labeled "OK" and is located next to the ISDN BRI0 socket on the back of a 1603 and on the silver WIC card on the back of the 1605.

If this light is not on after trying to make an Internet connection, then there may be either be a problem with the cabling between the router and the ISDN wall socket or a fault with the ISDN line itself.

Guide to ISDN Routers shipped by RM

How to set-up your router and hub