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Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series Integrated Services Routers Hardware Installation Guide
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Chapter 3 Connecting the Router
Connecting an FXO Line

Connecting an FXO Line

Use a straight-through RJ-11 cable to connect the FXO voice port to the PSTN or PBX through a
telephone wall outlet.
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1026
To connect the FXO line, follow these steps:
Step 1 Connect one end of the straight-through RJ-11 cable to the FXO port. See Figure 3-31.
Figure 3-31 Connecting an FXO Line
Step 2 Connect the other end of the RJ-11 cable to a telephone wall outlet.
1FXO port 3Telephone outlet
2RJ-11 cable
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