Connect An Isdn Line - Cisco 800 Series Quick Start Manual

7

Connect an ISDN Line

Refer to the section corresponding to your router model and follow the steps to connect the Cisco 800 series router to an ISDN
line.
• Option A—Connecting Cisco 801 and Cisco 803 Routers
• Option B—Connecting Cisco 802 and Cisco 804 Routers
Always connect the orange cable to the orange ISDN S/T port and the red cable to the red ISDN U port on the
Caution
router. Do not connect either cable to the yellow Ethernet port. Accidently connecting these cables to the wrong
port can damage your router.
Option A—Connecting Cisco 801 and Cisco 803 Routers
This section describes how to connect Cisco 801 and Cisco 803 routers outside of North America. For information on
connecting these routers in North America, see the Cisco 800 Series Routers Hardware Installation Guide.
Figure 3 Connecting an 801 or 803 Router to an ISDN Line
HU B
NO HU B
C is c o 8
ET HE RN
0 3
ET 10 BA
SE T
CO NS OL
E
IS DN S/
T
0
1
2
3
Cisco 803 router
Connect the orange cable to the orange ISDN S/T port.
Step 1
Connect the other end of the cable to the ISDN wall jack.
Step 2
6
PH ON E
1
2
ISDN wall jack