Cisco 850 Series integrated services routers are fixed-configuration routers that support broadband cable and Asymmetric DSL (ADSL) over analog telephone lines connections in small offices (Figures 1 and 2). They provide the performance needed to run concurrent services, including firewall and encryption for VPNs and optional 802.11b/g for wireless networking. The Cisco Router and Security Device Manager (SDM) Web-based configuration tool simplifies setup and deployment (Figure 3), and centralized management capabilities give network managers visibility and control of router configurations at the remote site.

Cisco 850 Series integrated services routers offer:
• Secure connectivity with Stateful Inspection Firewall and IP Security (IPSec) VPN support for small offices
• 4-port 10/100 switch
• Secure WLAN 802.11b/g option with a single fixed antenna
• Easy setup, deployment, and remote management capabilities through Web-based tools and Cisco IOS® Software

Features:
–Stateful Inspection Firewall and IPSec VPN Support:Provides secure access when connecting to the Internet or connecting small offices to a central site
–4-port Mbps 10/100 Switch: High-speed LAN ports connect multiple devices to the small office network
–Optional 802.11b/g WLANs: Offers a secure broadband router and access point for WLANs in a single device

Cisco SDM and Remote Management Features of Cisco IOS Software
• Cisco SDM helps resellers and customers to quickly and easily deploy, configure, and monitor a Cisco access router without knowledge of the Cisco IOS Software command-line interface (CLI)
• Out-of-band management with an external modem through the auxiliary port allows IT managers to remotely manage routers at small office sites
• Cisco Configuration Express Service supports factory-loaded configurations in high-volume deployments
• Support for the Cisco CNS 2100 Series Intelligence Engine enables plug-and-play installations with centralized configuration management

Specifications:

Routing Protocols and General Router Features:
• Routing Information Protocol (RIPv1 and RIPv2)
• Layer 2 Tunneling Protocol (L2TP)
• Network Address Translation (NAT) and Port Address Translation (PAT)
• RFC 1483/2684
• Point-to-Point Protocol over ATM (PPPoA) (Cisco 857)
• PPP over Ethernet (PPPoE)
• 802.1d Spanning Tree Protocol
• Dynamic Host Control Protocol (DHCP) server/relay/client
• Access control lists (ACLs)
• Generic routing encapsulation (GRE)

Number of Users Supported : Up to 10

IPv6 Features
• IPv6 addressing architecture
• IPv6 name resolution
• IPv6 statistics
• IPv6 translation-transport packets between IPv6-only and IPv4-only endpoints
• ICMPv6
• IPv6 DHCP

DSL and ATM Features (DSL Model Only)
• ATM Unspecified Bit Rate (UBR), Constant Bit Rate (CBR), and Variable Bit Rate/non-real-time (VBR-nrt)
• ATM Operation, Administration, and Maintenance (OAM) Support for F5 Continuity Check; segment and end-to-end loopback; and Interim Local Management Interface (ILMI) support
• 8 virtual circuits

Security Features
• Stateful Inspection Firewall
• Hardware-accelerated Triple Data Encryption Standard (3DES) for IPSec
• Hardware-accelerated Advanced Encryption Standard (AES) for IPSec
• IPSec 3DES termination/initiation
• IPSec pass-through
• Point-to-Point Tunneling Protocol (PPTP) pass-through
• L2TP pass-through

Wireless Features:

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

WLAN Security Features
• 802.1X
• Cisco LEAP
• PEAP
• EAP-TLS
• 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
• Configurable limit to the number of wireless clients
• Configurable RADIUS accounting for wireless clients
• PSK [Pre Shared Keys] (WPA-SOHO)

Hardware Specifications:
–Default DRAM: 64 MB
–Maximum DRAM: 64 MB
–Default Flash Memory:20 MB
–Maximum Flash Memory: 20 MB
–WAN : 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
–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+) hardware ready (support through future software release upgrade)
• DSL Forum TR-067
The chipset does not provide interoperability with carrierless amplitude modulation/phase modulation (CAP)-based ADSL lines.