Option B—Connecting Cisco 802 and Cisco 804 Routers

Figure 4 Connecting an 802 or 804 Router to an ISDN Line

HUB

NO HUB

ETHERNET 10

BASE T

0

1

2

3

Cisco 804 router

Cisco 804

CONSOLE

ISDN U

PHONE

1 2

ISDN wall jack

RJ-45-to-RJ-11 adapter cable

Step 1 Connect the red cable to the red ISDN U port.

Step 2 Connect the other end of the cable to the ISDN wall jack. If your wall jack has an RJ-11 connector, attach the RJ-45-to-RJ-11 adapter cable to the red cable, and then connect the RJ-11 connector to the ISDN wall jack.

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Cisco Systems 800 Series quick start Option B-Connecting Cisco 802 and Cisco 804 Routers