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Figure 2-2 Antennas Oriented Vertically Up
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Figure 2-3 Antennas Oriented Vertically Down
Installing on a Table
To install the router on a table or other flat horizontal surface, firmly place the router on a table or other 
horizontal surface. Keep at least 1 inch (2.5 centimeters) of clear space beside the cooling inlet and 
exhaust vents.
Connect the chassis to a reliable earth ground. For the chassis ground connection procedures, see the 
“Installing the Router Ground Connection” section on page 2-10.
Mounting on a Wall
The Cisco 860 series, 880 series, and 890 series ISRs have mounting holes on the bottom of the chassis 
for mounting the unit on a wall or other vertical surface.
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NoteThe mounting holes are bidirectional. You can hang the router with the front bezel facing upwards or 
downwards.
TipWhen choosing a location for wall-mounting the router, consider cable limitations and wall structure.
To mount the router on a wall, follow these steps:
Step 1Anchor the screws into the wall, leaving 1/8 inch (0.32 centimeter) between the screw head and the wall.
Figure 2-4 shows the wall-mount holes located on the underside of the router.
Figure 2-4 Wall-mount Holes on the Underside of the Router
Step 2Hang the router on the screws, and place the power adapter on a nearby horizontal surface. See 
Figure 2-5.
1Wall-mount holes
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Figure 2-5 Router Mounted on the Wall
Step 3Connect the chassis to a reliable earth ground. For the chassis ground connection procedures, see the 
“Installing the Router Ground Connection” section on page 2-10.
1Two number-10 wood screws mounted on the 
wall3Horizontal surface on which to place the 
power adapter
2Wall-mount holes4Distance between the screw head and the wall, 
1/8 in. (0.32 cm)
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Installing in a Rack
The Cisco 890 series ISRs can be mounted in a rack. To install a Cisco 890 series ISR in a rack, follow 
these steps:
Step 1Remove the screws shown in Figure 2-6.
Figure 2-6 Screw Location
Step 2Using the screws provided, attach the rack-mount brackets to the Cisco 890 series ISR chassis as shown 
in 
Figure 2-7. Use two screws on each side. Use a number 2 Phillips screwdriver to install the bracket 
screws on both sides of the chassis.
CautionDo not overtorque the screws. The recommended torque is 6 to 8 in-lb (0.7 to 0.9 N-m).
Figure 2-7 Attaching the Rack-mount Brackets to the Cisco 890 Series ISR
1Screws
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WarningTo prevent bodily injury when mounting or servicing this unit in a rack, you must take special 
precautions to ensure that the system remains stable. The following guidelines are provided to ensure 
your safety:
 
-- This unit should be mounted at the bottom of the rack if it is the only unit in the rack. 
-- When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest 
component at the bottom of the rack.
 
-- If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the 
rack. Statement 1006
CautionChassis installation must allow unrestricted airflow for chassis cooling. 
Step 3Using two screws for each side (supplied with the rack), attach the Cisco 890 series ISR with rack-mount 
brackets to a 19-inch rack. Start with the lower pair of screws first, resting the brackets on the lower 
screws while you insert the upper pair of screws.
NoteBe sure to leave space above and below each unit in a rack to allow for cooling air circulation. 
TipThe screw slots in the brackets are spaced to line up with every second pair of screw holes in the 
rack. When the correct screw holes are used, the small threaded holes in the brackets line up with 
unused screw holes in the rack. If the small holes do not line up with the rack holes, you must 
raise or lower the brackets to the next rack hole.
Step 4Place the power adapter on a nearby horizontal surface.
Step 5Connect the chassis to a reliable earth ground. For the chassis ground connection procedures, see the 
“Installing the Router Ground Connection” section on page 2-10.
Installing the Router Ground Connection
The router must be connected to a reliable earth ground. Install the ground wire in accordance with local 
electrical safety standards.
 For NEC-compliant grounding, use size 14 AWG (2 mm2) or larger copper wire and a ring terminal 
with an inner diameter of 1/4 in. (5 to 7 mm).
 For EN/IEC 60950–compliant grounding, use size 18 AWG (1 mm2) or larger copper wire.
To install the ground connection, follow these steps:
Step 1Strip one end of the ground wire to the length required for the ground lug or terminal.
Step 2Crimp the ground wire to the ground lug or ring terminal, using the wire crimper.
Step 3Attach the ground lug or ring terminal to the chassis as shown in Figure 2-8. For a ground lug, use the 
two provided screws with captive locking washers. For a ring terminal, use one of the screws provided. 
Tighten the screws to a torque of 8 to 10 in-lb (0.9 to 1.1 N-m). 
						

							 
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Figure 2-8 Chassis Ground Connection Using Ring Terminal
Step 4Connect the other end of the ground wire to a known reliable earth ground point at your site. 
After you install and properly ground the router, you can connect the power wiring, the WAN and LAN 
cables, and the cables for administrative access as required for your installation.
1Ring terminal
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							CH A P T E R
 
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3
Connecting the Router
This chapter describes how to connect Cisco 860 series, Cisco 880 series, and Cisco 890 series 
Integrated Services Routers (ISRs) to Ethernet devices, Power over Ethernet (PoE), and the network. The 
chapter contains the following sections:
 Preparing to Connect the Router, page 3-2
 Connecting a PC, Server, or Workstation, page 3-3
 Connecting a Phone, page 3-4
 Connecting an External Ethernet Switch, page 3-5
 Connecting the V.92 modem Port, page 3-6
 Connecting a Terminal or PC to the Console Port, page 3-7
 Connecting a Modem to the Auxiliary Port, page 3-8
 Connecting the 3G Card, page 3-9
 Connecting a Data BRI Port, page 3-13
 Connecting an FE Line to an FE WAN Port, page 3-15
 Connecting an GE Line to an GE WAN Port, page 3-16
 Connecting an xDSL Line, page 3-17
 Connecting Power over Ethernet, page 3-18
 Connecting the AC Adapter, page 3-18
 Connecting an FXS Line, page 3-21
 Connecting an FXO Line, page 3-23
 Connecting a Voice ISDN BRI Line, page 3-24
 Verifying Connections, page 3-26
NoteFor compliance and safety information, see Regulatory Compliance and Safety Information Roadmap 
that ships with the router and 
Regulatory Compliance and Safety Information for Cisco 800 Series and 
SOHO Series Routers.
NoteThe illustrations in this chapter show a wireless router with antennas attached. Nonwireless routers do 
not have antennas or antenna connectors on the back panel. However, the procedures for connecting 
devices to the router are the same for both wireless and nonwireless routers.  
						

							 
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NoteDepending on the features available for your router, some content in this chapter may not apply to your 
router.
Preparing to Connect the Router
Before you connect the router to the devices, install the router according to the instructions in Chapter 2, 
“Installing the Router.”
Preventing Damage to the Router
To prevent damage to your router, follow these guidelines when connecting devices to your router:
 Turn off power to the devices and to the router until all connections are completed.
CautionDo not turn on the devices until after you have completed all connections to the router.
 Connect the color-coded cables supplied by Cisco Systems to the color-coded ports on the back 
panel.
 If you must supply your own cable, see Appendix A, “Technical Specifications,” for cabling 
specifications. If this appendix does not provide specifications for a particular cable, we strongly 
recommend ordering the cable from Cisco.