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Memory
The Cisco 860 series, 880 series, and 890 series routers contain flash memory and main memory.
Flash Memory
The Cisco 860 series, 880 series, and 890 series ISRs use non-upgradable flash memory storage. The 
onboard flash memory contains the Cisco
 IOS software image, the boot flash contains the ROMMON 
boot code, and a separate non-volatile flash contains the cookie configuration. 
BRI Voice B1GreenOn—BRI B1 channel is connected. 
Blinking—BRI B1 channel is either receiving or 
transmitting data.
—888 SRST 
models
886, 887V, 
888, SRST 
models
—
BRI Voice B2GreenOn—BRI B2 channel is connected. 
Blinking—BRI B2 channel is either receiving or 
transmitting data.
—888 SRST 
models
886, 887V, 
888, SRST 
models
—
FXS17/DID18 
Vo i c e
GreenOn—FXS/DID port is connected. 
Blinking—FXS/DID port is either receiving or 
transmitting data.
—886, 887V, 
888, SRST 
models—
V.92 ModemGreenOn—Modem is connected.
Blinking—V.92 port is either receiving or transmitting 
data.
——891 
models
1. FE = Fast Ethernet.
2. SSID = service set identifier.
3. LWAPP = Lightweight Access Point Protocol.
4. PoE = Power over Ethernet.
5. VPN = Virtual Private Network.
6. PPP = Point-to-Point Protocol.
7. xDSL = General term referring to various forms of DSL, including ADSL (asymmetric digital subscriber line), VDSL (very-high-data-rate digital 
subscriber line), and G.SHDSL.
8. DSLAM = digital subscriber line access multiplexer.
9. BRI = Basic Rate Interface.
10. 3G = Third-Generation.
11. WWAN = wireless WAN.
12. RSSI = Received Signal Strength Indicator.
13. GSM = Global System for Mobile Communication.
14. CDMA = code division multiple access.
15. FXO = Foreign Exchange Office.
16. SRST = Survivable Remote Site Telephony.
17. FXS = Foreign Exchange Station.
18. DID = Direct Inward Dialing.
Table 1-1 LED Descriptions for the Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs (continued)
LED Color Description 860 Series 880 Series 890 Series 
						

							 
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The default flash memory for the Cisco 860 series and 880 series routers is 128 MB. The default flash 
memory for the Cisco
 880 series voice routers and Cisco 890 series routers is 256 MB.
NoteFlash memory is not upgradable. An external USB flash memory module may be used if additional flash 
memory is needed.
Main Memory
The Cisco 860 series routers contain 256 MB of onboard memory. The onboard memory in the Cisco 860 
series router is not expandable.
The Cisco 880 series routers contain 256 MB of onboard memory and a single memory expansion slot 
that accommodates a PC2-4200, 256-MB or 512-MB double data rate 2 (DDR2) SODIMM, for a 
maximum of 768
 MB. 
The Cisco 890 series routers contain 512 MB of DRAM by default (256 MB of onboard memory and a 
single memory expansion slot that accommodates a PC2-5300, 256-MB or 512-MB DDR2 SODIMM, 
for a maximum of 768
 MB).
USB Port
The Cisco 860 series and 880 series routers have a single Universal Serial Bus (USB 1.1-compliant) port 
located on the front panel. The USB port provides connection for USB devices such as security tokens 
and flash memory.
The Cisco 890 series routers have two USB 1.1-compliant ports located on the front panel.
Fan
Some router models do not have a fan, while other models have either one or two fans. 
The fans spin at full speed, as a diagnostic aid, immediately after the router is powered up. After the 
router has booted, the fans spin as fast as necessary to minimize fan noise while maintaining a safe 
internal operating temperature.
Power over Ethernet Module 
The Cisco 880 series ISRs can include an optional Power over Ethernet (PoE) module that provides 
power to 802.3af-compliant devices connected to FE ports 0 and 1. 
The Cisco 890 series ISRs can include an optional PoE module that provides power to 802.3af-compliant 
devices connected to FE ports 0, 1, 2, and 3.
The PoE module is an option available only for the Cisco 880 series and 890 series ISRs and requires a 
48-V external power adapter. 
						

							 
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3G Cellular Data WAN Connectivity
The 3G (Evolution Data Only [EVDO], Universal Mobile Telecommunications Systems [UMTS]) 
cellular interface is intended for use as a backup data link, but it can also be used as a primary WAN data 
link. The 3G technology is third-generation wide-area cellular technology that is used in voice telephony 
and broadband wireless data in a mobile environment. 
The Cisco 88xG models come with a 34-mm express card slot ready for use with a commercial 3G card 
radio. The 3G express card slot is located on the front panel. For a list of supported 3G cards, see the 
Cisco 880 Series Integrated Services Routers data sheet.
Wireless LAN Connectivity
The embedded Wi-Fi CERTIFIED™, 802.11a/b/g/n-compliant wireless AP is preinstalled in the router 
as an optional feature. The Cisco 860 series routers support autonomous features and network 
configurations. The Cisco
 880 series and 890 series routers support both autonomous and unified 
features and network configurations.
The wireless AP does not have an external console port. Use the router’s console port as described in 
Chapter 3, “Connecting a Terminal or PC to the Console Port.” To configure the wireless device, use the 
Cisco IOS command-line interface (CLI).
Ta b l e 1-2 describes the radios and antennas for the Cisco 860 series, 880 series, and 890 series routers.
The 5-GHz radio operates in the Unlicensed National Information Infrastructure (UNII) 1, 2, 3, 5-GHz 
frequency bands. 
Ta b l e 1-2 Wireless Device Radios and Antennas
Radio ModulePlatformRadio Band
Maximum Data 
Throughput1
1. Actual data rate is highly dependent on your wireless environment.
Mode Antenna
Single-band 
802.11b/g/n draft 2.0 
radio moduleCisco 860 and 
880 series 
routers2.4 GHzUp to 100 Mb/sCisco 860 series: 
autonomous only
Cisco 880 series: 
autonomous and 
unified
Three captive 2-dBi 
omnidirectional dipole 
antennas
Dual-band 
simultaneous 
802.11a/n and 
802.11b/g/n
 
radio module
Cisco 8902.4 GHz 
and 5 GHz100 Mb/s per radio, 
up to 200 Mb/s 
totalAutonomous and 
unifiedThree dual-band, 
removable, 
2.4-GHz/5-GHz 
omnidirectional dipole 
RP-TNC antenna2
2.The antennas require some minor installation. They must be screwed onto the RP-TNC antenna connectors on the I/O side of the chassis. See the following document on Cisco.com for feature information: http://cisco.com/en/US/products/ps5853/prod_installation_guide09186a00804399cd.html 
						

							 
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Supported Cisco Radio Antennas 
The Cisco 890 series ISRs come with three removable dipole antennas that can be replaced using the 
Cisco approved antenna extenders listed in 
Ta b l e 1-3. 
Feature Summary
Ta b l e 1-4 summarizes the hardware features available in the Cisco 860 series, Cisco 880 series, and 
Cisco 890 series ISRs.
Ta b l e 1-3 Cisco Antennas Supported on the Cisco 890 Series ISRs 
Cisco Part NumberAntenna TypeMaximum GainDescription
AIR-ANTM2050D-ROmnidirectional2.0 dBi at 2.4 GHz
5.0 dBi at 5 GHz
This is the default antenna. It is a swivel-mount 
dipole dual-band blade antenna. For more 
information, see 
Cisco 2.4-GHz Swivel-Mount 
Dipole Antenna (23.7786.51).
AIR-ANTM4050V-ROmnidirectional4.0 dBi at 2.4 GHz
5.0 dBi at 5 GHz
Ceiling-mount dual-band antenna. This antenna 
has a clip that allows it to be mounted on a 
drop-ceiling cross member. For more information, 
see 
Cisco Multiband Diversity Omnidirectional 
Ceiling-Mount Antenna.
AIR_ANTM5050P-RPatch5.5 dBi at 2.4 GHz
6.0 dBi at 5 GHz
Wall-mount dual-band antenna. For more 
information, see 
Cisco Multiband Wall-Mount, 
Corner-Mount, or Mast-Mount Antenna.
Ta b l e 1-4 Hardware Features Available in Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs 
FeatureDescription860 Series880 Series890 Series
Reset buttonResets the router configuration to the factory default.All modelsAll modelsAll models
FE1 built-in 
switch ports
Provides connection to 10/100BASE-T (10/100-Mbps) 
Fast
 Ethernet networks. The autosensing function in these 
routers eliminates the need for a crossover cable and allows 
the router to detect MDI2 or MDIX3 in any other PC or hub 
with a straight-through cable or a crossover cable. 
All modelsAll modelsAll models
Console or AUX 
portProvides a connection to the terminal or PC for software 
configuration or troubleshooting. The console port may be 
configured as a virtual auxiliary port for dial backup and 
remote management. The Cisco
 890 series routers have 
separate console and auxiliary ports.
All modelsAll modelsAll models
Security featuresProvides support for VPNs4, Cisco IOS Firewall, and 
IPSec5. The Cisco 880 series routers also provide URL 
filtering. 
All modelsAll modelsAll models
Embedded 
wireless APThe wireless AP is Wi-Fi CERTIFIED™ 
802.11a/b/g/n-compliant. The Cisco 860 series and 
880
 series routers contain a single 802.11b/g/n radio. The 
Cisco 890 series routers contain dual 802.11b/g/n and 
802.11a/n radios.
Wireless 
models
802.11b/g/n
Wireless 
models
802.11b/g/n
Wireless 
models
802.11b/g/n 
and 802.11a/n 
						

							 
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FE WAN portProvides connection to 10/100BASE-T. Can be connected to 
other network devices, such as a cable modem, an xDSL6 
modem, or router. The router is capable of bridging and 
multiprotocol routing between the LAN and WAN ports.
861 models881 modelsAll models
GE7 WA N  p o r t10/100/1000 GE WAN Port.——All models
VDSL2oPOTS8 
port
Provides connection to a VDSL2 network.—887V—
ADSL2+oPOTSProvides ADSL connection over basic telephone service 
with Annex A and Annex B ITU G. 992.1 (ADSL), G.992.3 
(ADSL2), and G.992.5 (ADSL2+)867 
models—887 
models887
V—
ADSL2+oISDNProvides ADSL connection over ISDN. —886 
models886—
Real-time clock 
(RTC)RTC provides nonvolatile date and time when the router is 
powered on. The RTC is used for verifying the validity of the 
Certification Authority stored on the router. It is backed up 
by a nonreplaceable lithium battery.—All modelsAll models
USB portSupports high-speed USB 1.1. Provides connection for USB 
devices such as security tokens and flash memory.
The Cisco 880 series routers have a single USB port; the 
Cisco 890 series routers have two USB ports.
—All modelsAll models
PoE9(Optional) Provides power for 802.3af-compliant devices 
(such as phones) that are connected to the router.
The Cisco 880 series routers support a 2-port PoE module; 
the Cisco 890 series routers support a 4-port PoE module.
—Models with 
PoEModels with 
PoE
G.SHDSL10 portProvides 2-wire or 4-wire connection to a G.SHDSL 
network.—888 models—
3G11 card slotProvides backup data link.—3G models—
Dying gaspDetects when the router is about to lose power, and sends a 
power-fail signal to warn the DSLAM12 about the 
impending line drop. 
—xDSL 
models—
Data BRI portProvides backup and remote management functions by 
connecting to the ISDN service provider if the main 
VDSL213 or G.SHDSL link fails.
—xDSL 
models, 
except for 
the 3G and 
SRST14 
models
892 models
V.92 modemProvides dial backup and remote management functions if 
the main WAN link fails.——891 models
FXO15 portAn FXO interface connects local calls to a central office or 
PBX. This is the interface a standard telephone provides.—881 SRST 
models—
Table 1-4 Hardware Features Available in Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs (continued)
Feature Description 860 Series 880 Series 890 Series 
						

							 
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FXS16/DID17 
port
An FXS interface connects directly to a standard telephone, 
fax machine, or similar device. This interface supplies 
ringing voltage and dial tone to the station.—886, 887V, 
888, SRST 
models—
BRI voice portThe ISDN BRI S/T voice interface provides a client-side 
(TE) ISDN S/T physical interface for connection to an NT1 
device that terminates an ISDN telephone network. —888 SRST 
models
886, 887V, 
888, SRST 
models
—
1. FE = Fast Ethernet.
2. MDI = media-dependent interface in normal mode.
3. MDIX = media-dependent interface in crossover mode.
4. VPN = Virtual Private Network.
5. IPsec = IP security.
6. xDSL = General term referring to various forms of DSL, including ADSL (asymmetric digital subscriber line), VDSL (very-high-data-rate digital 
subscriber line), and G.SHDSL.
7. GE = Gigabit Ethernet
8. VDSL2oPOTS = very-high-data-rate digital subscriber line 2 over plain old telephone service.
9. PoE = Power over Ethernet.
10. G.SHDSL = (global industry standard) symmetrical high-speed DSL.
11. 3G = Third-Generation.
12. DSLAM = digital subscriber line access multiplexer.
13. VDSL2 = very-high-data-rate digital subscriber line 2.
14. SRST = Survivable Remote Site Telephony.
15. FXO = Foreign Exchange Office.
16. FXS = Foreign Exchange Station.
17. DID = Direct Inward Dialing.
Table 1-4 Hardware Features Available in Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs (continued)
Feature Description 860 Series 880 Series 890 Series 
						

							CH A P T E R
 
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2
Installing the Router
This chapter describes the equipment and the procedures for successfully installing the Cisco 860 series, 
880 series, and 890 series Integrated Services Routers (ISRs), and contains the following sections:
 Equipment, Tools, and Connections, page 2-1
 Installing the Router, page 2-3
NoteFor compliance and safety information, see the Regulatory Compliance and Safety Information 
Roadmap that ships with the router and the
 Regulatory Compliance and Safety Information for Cisco 800 
Series and SOHO Series Routers.
WarningRead the installation instructions before connecting the system to the power source. Statement 1004
WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. 
Statement 1030
WarningUltimate disposal of this product should be handled according to all national laws and regulations. 
Statement 1040
Equipment, Tools, and Connections
This section describes the equipment, tools, and connections necessary for installing your Cisco 860 
series, 880 series, and 890 series ISRs. It contains the following topics:
 Items Shipped with your Router, page 2-2
 Additional Items, page 2-2
 Connections, page 2-2
 Ethernet Devices, page 2-3 
						

							 
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  Equipment, Tools, and Connections
Items Shipped with your Router
Unpack the box and verify that all items listed on the invoice were shipped with the router.
Ta b l e 2-1 lists the items and their quantities that are shipped with each router model.
Additional Items
The following items are not shipped with the router but are required for installation: 
 ESD-preventive cord and wrist strap.
 Screws for mounting the router on a wall:
 –Two number-10 wood screws (round- or pan-head) with number-10 washers, or two number-10 
washer-head screws, for mounting on a wall stud. The screws must be long enough to penetrate 
at least 3/4 in. (20 mm) into the supporting wood or metal wall stud. 
 –Two number-10 wall anchors with washers, for mounting the router on a hollow-wall. 
 Wire crimper for chassis grounding.
 Wire for connecting the chassis to an earth ground:
 –AW G  1 4  ( 2  m m2) or larger wire for NEC-compliant chassis grounding.
 –AW G  1 8  ( 1  m m2) or larger wire for EN/IEC 60950–compliant chassis grounding.
 A ring terminal with an inner diameter of 1/4 in. (5 to 7 mm), for NEC-compliant chassis grounding.
 Ethernet cables for connecting to the Fast Ethernet (FE) WAN and LAN ports.
Connections
Obtain a broadband or Ethernet connection from your service provider.
Ta b l e 2-1 Items and Their Quantities That Are Shipped with the Cisco 860 Series, Cisco 880 
Series, and Cisco 890 Series ISRs
 
Item
Cisco 860 
Series RoutersCisco 880 
Series RoutersCisco 890 
Series Routers
Straight-through RJ-45 Ethernet cable1
1. Cisco 861 and Cisco 881 ISRs only.
111
RJ-11 DSL2 cable3
2. DSL = digital subscriber line.
3. Cisco 888 ISRs only.
111
RJ-45–to–DB-9 console cable111
External 12 VDC power supply adapter111
AC power supply cable111
Cisco Configuration Professional (Cisco CP) 
CD4
4. Cisco CP is optional by order and available only on some SKUs.
111 
						

							 
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Ethernet Devices
Identify the Ethernet devices that you will connect to the router: hub, servers, and workstations or PCs. 
Ensure that each device has a network interface card (NIC) for connecting to Ethernet ports.
 If you plan to configure the software using Cisco IOS commands through the console port, provide 
an ASCII terminal or a PC that is running terminal emulation software to connect to the console port.
 If you plan to connect a modem, provide the modem and modem cable.
 If you plan to use the Data BRI port, provide an NT1 device and an ISDN S/T cable.
 If you plan to use the cable-lock feature, provide a Kensington or equivalent locking cable.
Installing the Router
This section describes how to install the Cisco 860 series, 880 series, and 890 series ISRs. These routers 
can either be installed on a table top or other flat horizontal surface or be mounted on a wall. The 
Cisco
 890 series ISRs may be mounted in a rack. This section also describes how to attach WLAN 
antennas to the Cisco
 890 series routers. This section contains the following topics:
 Warnings, page 2-3
 Installing Antennas, page 2-4
 Installing on a Table, page 2-6
 Mounting on a Wall, page 2-6
 Installing in a Rack, page 2-9
 Installing the Router Ground Connection, page 2-10
Warnings
WarningThis equipment needs to be grounded. Use a green and yellow 12 to 14 AWG ground wire to connect 
the host to earth ground during normal use. Statement 242
WarningThis equipment must be grounded. Never defeat the ground conductor or operate the equipment in the 
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection 
authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
WarningThis unit is intended to be mounted on a wall. Please read the wall mounting instructions carefully 
before beginning installation. Failure to use the correct hardware or to follow the correct procedures 
could result in a hazardous situation to people and damage to the system. Statement 248
CautionDo not cover or obstruct the router vents located on both sides of the router; otherwise, overheating could 
occur and cause damage to the router. 
						

							 
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CautionDo not place anything on top of the router that weighs more than 10 pounds (4.5 kilograms), and do not 
stack routers on a desktop. Excessive weight on top of the router could damage the chassis.
CautionDo not install the router or power supplies next to a heat source of any kind, including heating vents.
Installing Antennas
The Cisco 890 series wireless routers have three reverse-polarity threaded Neill-Concelman (RP-TNC) 
connectors on the back panel. The antennas that are shipped with the router are dual-band 2.4-GHz to 
5-GHz omnidirectional dipole antennas.
WarningStatement 372—All wireless LAN products in the 5.2/5.3GHz band cannot be used outdoors. Use the 
product only indoors.
NoteBefore you install the Cisco 890 series wireless router on a table, wall, or rack, connect the antennas to 
the back panel. It is difficult to attach the antennas after the router is installed.
To attach the radio antennas to your wireless router, follow these steps:
Step 1Manually screw the antennas tight to the RP-TNC connectors on the back of the router.
Figure 2-1 Attaching Antennas to the Router
Step 2Orient the antennas. For optimum wireless performance, the antennas should be perpendicular with 
respect to the floor.
a.If the router is being mounted on a desk, orient the antennas straight up.
b.If the router is being mounted on a wall, orient the antennas perpendicular to the floor as shown in 
Figure 2-2 and Figure 2-3.
272486