Cisco 877W Hardware Installation Guide - Page 22

Feature Summary Chapter 1 Product Overview Table 1-1 Hardware Feature Summary (continued) Feature Description ADSL-over-ISDN port Cisco 876 router only. Provides connection to an ADSL-over-ISDN network. Does not support the autoswitch function. G.SHDSL port Cisco 878 router only. Provides 2-wire or 4-wire connection to a G.SHDSL network. Console port Provides a connection to the terminal or PC for software configuration or troubleshooting using the command-line interface (CLI). The console port may be configured as a virtual auxiliary port (using the CLI) for dial backup and remote management. Flash memory Cisco 850 series routers:  20 MB of flash memory (default and maximum) Cisco 870 series routers: 20 MB of flash memory (default) 28 MB of flash memory for routers ordered with a Cisco IOS Advanced IP Services image or Enterprise Services image. Expandable by 8, 16, or 32 MB, up to a maximum of 52 MB. Synchronous dynamic RAM (SDRAM) Cisco 850 series routers: 64 MB of SDRAM on board. Cisco 870 series routers: 128 MB of SDRAM on board. Expandable by 64 or 128 MB, up to a maximum of 256 MB. Router Reset button Resets the router configuration to the factory default. Dying gasp Detects whether the router is about to lose power, and sends a signal to warn the digital subscriber line access multiplexer (DSLAM) about the impending line drop. Wall-mount feature Brackets for mounting the router on a wall or vertical surface. USB ports Cisco 871 router only. Supports USB-compatible devices such as security tokens and flash memory sticks. IPSec hardware accelerator The security processor implements symmetric key encryption, public key encryption, authentication, and data compression in hardware. Integrated 802.11b/g radio module (Optional) Provides connectivity to a wireless LAN using IEEE 802.11b/g standards. Enables the router to act as an access point (AP) in infrastructure mode. External power-over-Ethernet (PoE) module (Optional) Provides inline power for powered devices (such as PCs and phones) that are connected to the router. Kensington security slot Allows the router to be secured to a desktop or other surface by using Kensington lockdown equipment. Security features Provides support for virtual private networks (VPNs), Cisco IOS Firewall, and IPSec. For information about software security features, see the Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide. Autosensing function Eliminates the need for a crossover cable and allows the router to detect medium-dependent interface in normal mode (MDI) or medium-dependent interface in crossover mode (MDIX) in any other PC or hub with a straight-through cable or a crossover cable. The router is capable of bridging and multiprotocol routing between the LAN and WAN ports. Cisco 850 Series and Cisco 870 Series Access Routers Hardware Installation Guide 1-8 OL-5331-01