
Data Sheet
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Table 4. WLAN (Cisco 851W and 857W) Features of the Cisco 850 Series
Feature Description
WLAN Hardware ●802.11b/g
●Automatic rate selection for 802.11b/g
●External antenna (cannot be removed)
●Indoor range: 1 Mbps @ 320 ft
●WECA interoperability
●Default antenna gain: 2.2 dBi
WLAN Software Features ●Maximize throughput or maximize range option
●Software configurable transmit power
●SSID Globalization
WLAN Security Features ●802.1X
●802.11i
●Wi-Fi Protected Access (WPA) & AES (WPA2)
●EAP Authentication: Cisco LEAP, PEAP, EAP-TLS, EAP-FAST, EAP-SIM, EAP-MD5,
EAP-TTLS
●Static and dynamic Wired Equivalent Privacy(WEP)
●Temporal Key Integrity Protocol (TKIP)/SSN Temporal Key Integrity Protocol/Simple
Security Network encryption
●MAC authentication/filter
●User database for survivable local authentication using LEAP & EAP-FAST
●Configurable limit to the number of wireless clients
●Configurable RADIUS accounting for wireless clients
●PSK (Pre Shared Keys) (WPA-SOHO)
SSIDs 10
Wireless VLANs 10
Encrypted Wireless VLANs 4
MBSSIDs 1
Table 5. Hardware Features of the Cisco 850 Series
Feature Description
Default DRAM 64 MB
Maximum DRAM 64 MB
Default Flash Memory 20 MB
Maximum Flash Memory 20 MB
WAN ●Cisco 851: 100 MB Ethernet
●Cisco 857: ADSL over analog telephone lines
LAN Switch 4-port 10/100BASE-T switch with autosensing MDI/MDX (Media Device In/Media Device
Crossover) for auto-crossover
802.11b/g WLANs Optional on both Cisco 851 and Cisco 857 models
Console Port RJ-45
LEDs PPP, VPN, ADSL, WLAN, LAN
External Power Supply Universal 100 to 240 VAC
DSL Specifications ●ST-Micro DynaMiTe (formerly Alcatel Micro Electronics) ADSL Chipset (20190)
●T1.413 ANSI ADSL DMT issue 2
●G.992.1 ITU G.DMT support
●G.992.3 ITU G.hs ADSL type negotiation
●G.992.3 (ADSL 2)/G.992.5(ADSL2+)
●DSL Forum TR-067 The chipset does not provide interoperability with carrierless
amplitude modulation/phase modulation (CAP)-based ADSL lines.
Wireless Specifications
Data Rates Supported 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, and 54 Mbps