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Because the LED indicators are shared, the LED illuminates (green) when either port is active. For 
example, the LED indicator labeled BRI 1 B1 illuminates when either the BRI1 B1 channel is active or 
when the FXS port is active.   You can determine the activity status on each interface by using the 
following commands.
For activity status on the FXS ports, use the show port summary command.
For activity status on the BRI ISDN port, use the show isdn status command.
Figure 1-85 shows a close-up view of the LED indicators.
Figure 1-85 Close-up of the BRI and FXS LED Indicators
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.
Ta b l e 1 - 4 8 describes the default flash memory storage.
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Table 1-48 Flash Memory Storage
Models Flash Memory Storage
Cisco 860 series and 880 series routers 128 MB
Cisco 880 series voice routers and Cisco 890 series routers 256 MB
Cisco 880 series routers with embedded WLAN antennas 256 MB
Cisco 860VAE routers 8 MB boot flash, 128 MB for IOS
Cisco 860VAE-K9 64 MB boot flash and IOS 
						

							 
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NoteFlash memory is not upgradable. An external USB flash memory module may be used if additional flash 
memory is needed.
Main Memory
Ta b l e 1 - 4 9 describes the main onboard memory storage for different router models.
USB Port
Ta b l e 1 - 5 0 describes the USB ports for different router models.
Table 1-49 Main Onboard Memory Storage
Models Onboard Memory Storage Expandability
Cisco 860 series routers 256 MB Not expandable.
Cisco 860VAE series routers 256 MB Not expandable.
Cisco 880 series routers 256 MB
(expandable to 768 MB)A memory expansion slot accommodates 
a PC2-4200, 256-MB or 512-MB double 
data rate 2 (DDR2) SODIMM, for a 
maximum of 768 MB.
Cisco 880 series routers with 
embedded WLAN antennas512 MB Not expandable.
Cisco 892FSP, 896VA, 
897VA, 898EA routers512 MB Expandable to 1 GB.
Table 1-50 USB Ports
Models USB
Cisco 860 series (non-VAE) No USB ports.
Cisco 860VAE series One USB 1.1-compliant port located on the back panel. The USB 
port does not support eToken.
Cisco 860VAE-W-A-K9, 
Cisco 860VAE-W-E-K9, and 
Cisco 
860VAE-POE-W-A-K9 
seriesFor moe information, refer to the “Cisco 860VAE-W-A-K9, Cisco 
860VAE-W-E-K9, and Cisco 860VAE-POE-W-A-K9 ISRs” section 
on page 1-50.
Cisco 880 series One 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.
Cisco 890 series
1
1. Except for Cisco 892FSP, Cisco 896VA, Cisco 897VA, and Cisco 898EA.
Two USB 2.0-compliant ports located on the front panel.
Cisco 892FSP, Cisco 896VA, 
Cisco897VA, Cisco 898EAOne USB 2.0-compliant port located on the back panel. 
						

							 
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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.
The following models have no fan:
Cisco 892FSP
Cisco 896VA
Cisco 897VA 
Cisco 898EA
Power Supply 
The Cisco 892FSP has a single +12V power supply input. The Cisco 892FSP power connector is 
different from the barrel-type connector on other 890 series models. The AC adapter cable connector has 
four pins and a built-in locking mechanism. Figure 3-33 shows the power adapter connector.
The Cisco 896VA, 897VA, and Cisco 898EA use PoE (12 VDC 43 W, -54 VDC 80 W) and non-PoE 
(12 VDC 60 W) power supplies.
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.
This function can be added to an 880 or 890 series router by installing the PoE adapter card in the router 
and inserting the PoE 48 V external power adapter.
NoteThe Cisco 880 series ISRs with embedded WLAN antennas require a single external power supply: a 
30 W power supply for non-POE-enabled routers or a 60 W power supply for POE-enabled routers. For 
the back panels of some of these routers, see Figure 1-33 and Figure 1-35.
The following PoE budget is available:
C867VAE-POE-W-A-K9: 15.4 W (one port PoE)
Cisco 880 series: 30.8 W (2 ports each 15.4 W)
Cisco 890 series: 61.6 W (4 ports each 15.4 W) 
						

							 
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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.
Some Cisco 880G 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.
Other Cisco 880G models come with embedded WAN modems for use over GSM or CDMA networks. 
These routers have antenna connectors on the back panel. GSM routers have two SIM card slots. For 
information on configuring Cisco 880 series ISRs for 3G, see Configuring Cisco EHWIC and 880G for 
3G (EV-DO Rev A) and Configuring Cisco EHWIC and 880G for 3.7G (HSPA+)/3.5G (HSPA).
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 the Router.” To configure the wireless device, use the Cisco IOS command-line 
interface (CLI).
Ta b l e 1 - 5 1 describes the radios and antennas for the Cisco860 series, 880 series, and 890 series routers.
NoteCisco 860VAE ISRs do not support wireless LAN connectivity.
The 5-GHz radio operates in the Unlicensed National Information Infrastructure (UNII) 1, 2, 3, 5-GHz 
frequency bands.
Table 1-51 Wireless Device Radios and Antennas
Radio Module Platform Radio BandMaximum Data 
Throughput1Mode Antenna
Single-band 
802.11b/g/n 
draft 2.0 radio 
moduleCisco 860 and 880 series 
routers
NoteCisco 860VAE 
ISRs do not 
support wireless 
LAN connectivity.2.4 GHz Up to 100 Mb/s Cisco 860 series: 
autonomous only
Cisco 880 series: 
autonomous and 
unifiedThree captive, 
omnidirectional dipole 
antennas: 2 dBi at 
2.4 GHz 
						

							 
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Supported Cisco Radio Antennas 
The Cisco 891, Cisco 892, and Cisco 892F come with three removable dipole antennas that can be 
replaced using the Cisco approved antenna extenders listed in Ta b l e 1 - 5 2.
NoteCisco supports only the antennas listed in Ta b l e 1 - 5 2 with the Cisco 890 series dual-band radio module. Single-band 
802.11b/g/n 
radio moduleCisco 880 series routers 
with embedded WLAN 
antennas2.4  GHz 100 Mb/s per radio, 
up to 200 Mb/s 
totalAutonomous and 
unifiedThree embedded,
omnidirectional 
antennas: 2 dBi at 
2.4 GHz
Dual-band 
802.11a/n and 
802.11b/g/n
radio modules2.4 GHz 
and
5 GHzThree embedded, 
dual-band, 
omnidirectional 
antennas: 2 dBi at 
2.4 GHz and 5 dBi at 
5 GHz
Dual-band 
simultaneous 
802.11a/n and 
802.11b/g/n
radio modulesCisco 890 2.4 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 antenna
2
1. Actual data rate is highly dependent on your wireless environment.
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://www.cisco.com/en/US/docs/routers/access/wireless/hardware/notes/antdip.html
Table 1-51 Wireless Device Radios and Antennas
Radio Module Platform Radio BandMaximum Data 
Throughput1Mode Antenna
Table 1-52 Cisco Antennas Supported on the Cisco 890 Series ISRs
Cisco Part Number Antenna Type Maximum Gain Description
AIR-ANTM2050D-R Omnidirectional 2.0 dBi at 2.4 GHz
5.0 dBi at 5 GHzThis is the default antenna. It is a swivel-mount 
dipole dual-band blade antenna. For more 
information, see Cisco Multiband Swivel-Mount 
Dipole Antenna (AIR-ANTM2050D-R).
AIR-ANTM4050V-R Omnidirectional 4.0 dBi at 2.4 GHz
5.0 dBi at 5 GHzCeiling-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_ANTM5560P-R Patch 5.5 dBi at 2.4 GHz
6.0 dBi at 5 GHzWall-mount dual-band antenna. For more 
information, see Cisco Multiband Wall-Mount, 
Corner-Mount, or Mast-Mount Antenna. 
						

							 
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Small Form-Factor Pluggable Port
The SFP port supports auto-media-detection, auto-failover, and remote fault indication (RFI), as 
described in the IEEE 802.3ah specification.
See the Cisco 892F data sheet for a list of supported SFPs.
Feature Summary
Ta b l e 1 - 5 3 summarizes the hardware features available in the Cisco 860 series, Cisco 880 series, and 
Cisco 890 series ISRs.
Table 1-53 Hardware Features Available in Cisco 860 Series, Cisco 880 Series, and Cisco 890 Series ISRs
Feature Description 860 Series 880 Series 890 Series
Reset button Resets the router configuration to the factory default. All models All models All models
Resets the router configuration to customer configuration. 866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9——
FE
1 built-in 
switch portsProvides connection to 10/100BASE-T (10/100-Mb/s) 
Fast Ethernet networks. The autosensing function in these 
routers eliminates the need for a crossover cable and enables 
the router to detect MDI
2 or MDIX3 in any other PC or hub 
with a straight-through cable or a crossover cable. All models All models 891, 892, 
892F
GE
4 built-in 
switch portProvides connection to 10/100/1000BASE-T 
(10/100/1000-Mb/s) Gigabit Ethernet networks. The 
autosensing function in these routers eliminates the need for 
a crossover cable and enables the router to detect MDI
5 or 
MDIX6 in any other PC or hub with a straight-through cable 
or a crossover cable.866VAE-K9, 
867VAE-K9— 892FSP, 
896VA, 
897VA, 
897VAB, 
897VAM, 
897VAW, 
897VAMW, 
898EA
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. 
Cisco 891, Cisco 892, and Cisco 892F have separate console 
and auxiliary ports.
Cisco 892FSP has combined console and auxiliary port.All models All models All models
Security features Provides support for VPNs
7, Cisco IOS Firewall, and 
IPSec8. The Cisco 880 series routers also provide URL 
filtering. 861, 867, 
866VAE-K9, 
867VAE-K9All models All models 
						

							 
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Embedded 
wireless APProvides Wi-Fi CERTIFIED™ 802.11a/b/g/n compliance. 
The Cisco 860 series routers contain a single 802.11b/g/n 
radio. 
Some Cisco 880 series routers contain a single 802.11b/g/n 
radio while others contain dual 802.11a/n and 802.11b/g/n 
radios.
The Cisco 890 series routers contain dual 802.11b/g/n and 
802.11a/n radios.Wireless 
models
802.11b/g/nWireless 
models
802.11b/g/n
9
and
802.11a/n10
Wireless 
models
802.11b/g/n 
and
802.11a/n
FE WAN port Provides connection to 10/100BASE-T. Can be connected to 
other network devices, such as a cable modem, an xDSL
11 
modem, or router. The router is capable of bridging and 
multiprotocol routing between the LAN and WAN ports.861 881  891, 892, 
892F
GE WAN port 10/100/1000 GE WAN Port. 866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9— All models
VDSLoPOTS
12 
portProvides connection to a VDSL network. — 887V —
ADSLoPOTS Provides 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 (ADSL).—— —
ADSLoISDN Provides ADSL connection over ISDN.  — — —
DSL Multi-mode 
(VDSL and 
ADSL2/2+)Provides ADSL2/2+ or VDSL connection over POTS or 
ISDN (ISDN on 886VA only).866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9886VA, 
887VA,887V
A-M892FSP, 
896VA, 
897VA, 
897VAB, 
897VAM, 
897VAW, 
897VAMW, 
898EA
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.866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9All models All models
Table 1-53 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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USB port, Supports 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.
Cisco 880 series routers with embedded WLAN antennas 
have one USB 2.0 port.
Cisco 892FSP and Cisco 860VAE series routers have one 
USB 2.0 port on the rear panel for temporary installation of 
a Cisco-approved USB memory device for maintenance 
purposes only. The port supports only USB 2.0. Refer to the 
product datasheet for the list of supported USB flash 
memory devices.
NoteCisco 860VAE series router USB port does not 
support eToken.866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9All models All models
PoE
13(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.SHDSL
14 port Provides 2-wire or 4-wire connection to a G.SHDSL 
network.— 888 898EA
3G
15 card slot Provides backup data link. — 3G models —
Dying gasp Detects when the router is losing power, and sends a 
power-fail signal to warn the DSLAM
16 about the 
impending line drop.866VAE, 
867VAE, 
866VAE-K9, 
867VAE-K9,
xDSL 
models888EA,
xDSL models892FSP, 
896VA, 
897VA, 
897VAB, 
897VAM, 
897VAW, 
897VAMW, 
898EA
Data BRI port Provides backup and remote management functions by 
connecting to the ISDN service provider if the main VDSL 
or G.SHDSL link fails.—xDSL 
models, 
except for the 
3G and 
SRST
17 
models892, 
897VAB
V.92 modem Provides dial backup and remote management functions if 
the main WAN link fails.— — 891 
FXO
18 port An FXO interface connects local calls to a central office or 
PBX. This is the interface a standard telephone provides.— 881 SRST  —
FXS
19/DID20 
portAn FXS interface connects directly to a standard telephone, 
fax machine, or similar device. This interface supplies 
ringing voltage and dial tone to the station.— SRST models —
Table 1-53 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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BRI voice port The 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.— 887V —
SFP
21 port Supports auto-media-detection, auto-failover, and remote 
fault indication (RFI), as described in the IEEE 802.3ah 
specification.
See the Cisco 892F data sheet for a list of supported SFPs.— — 892F 
models, 
892FSP, 
896VA, 
897VA, 
897VAB, 
897VAM, 
897VAW, 
897VAMW, 
898EA
1. FE = Fast Ethernet.
2. MDI = media-dependent interface in normal mode.
3. MDIX = media-dependent interface in crossover mode.
4. GE = Gigabit Ethernet.
5. MDI = media-dependent interface in normal mode.
6. MDIX = media-dependent interface in crossover mode.
7. VPN = Virtual Private Network.
8. IPsec = IP security.
9. This applies to most models of the Cisco 880 series routers.
10. This applies to Cisco 880 series routers with embedded, wireless antennas.
11. 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.
12. VDSLoPOTS = very-high-data-rate digital subscriber line 2 over plain old telephone service.
13. PoE = Power over Ethernet. This function can be added to an 880 or 890 series router by installing the PoE adapter card in the router and inserting the 
PoE 48-V external power adapter.
14. G.SHDSL = (global industry standard) symmetrical high-speed DSL.
15. 3G = Third-Generation.
16. DSLAM = digital subscriber line access multiplexer.
17. SRST = Survivable Remote Site Telephony.
18. FXO = Foreign Exchange Office.
19. FXS = Foreign Exchange Station.
20. DID = Direct Inward Dialing.
21. SFP = small-form-factor pluggable.
Table 1-53 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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