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Cisco Integrated Services Router Hardware Installation Guide
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Chapter1 Product Overview Cisco C891 Series ISRs
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 Cisco880 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 conf igure the wireless de vice, use the CiscoIOS command-line
interface (CLI).
Table 1 -35 describes the radios and antennas for the Cisco 860 series, 880 series, and 890 series routers.
Note Cisco 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.
Table1-35 Wireless Device Radios and Antennas
Radio Module Platform Radio Band Maximum Data
Throughput1Mode Antenna
Single-band
802.11b/g/n
draft 2.0 radio
module
Cisco 860 and 880 series
routers
Note Cisco 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
unified
Three captive,
omnidirectional dipole
antennas: 2 dBi at
2.4 GHz