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Cisco 837 Router and SOHO 97 Router Hardware Installation Guide
78-14781-02
1
Product Overview
The Cisco 837 and SOHO 97 routers are asymmeric digital subscriber line
(ADSL)–over–plain old telephone service (POTS) routing devices. They have an
integrated 4-port Ethernet switch for the LAN and an ADSL physical interface for
the WAN, allowing the routers to connect a corporate telecommuter or small
office to corporate LANs and the Internet.
The routers support high-speed encryption, the10/100BASE-T switch, and dial
backup functionality via the auxiliary console port. The autosensing function in
these routers 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 routers are capable of bridging
and multiprotocol routing between LAN and WAN ports.
The dial backup feature allows the user to connect an analog modem to the
console port as a backup link to the WAN in case the ADSL service goes down.
This feature gives the Cisco 837 and SOHO 97 routers a high level of performance
and security.
The Cisco 837 router is designed with both hardware-based and software-based
encryption, while the SOHO 97 router supports only software-based encryption.
The Cisco 837 routers support the addition of Flash memory or DRAM, either as
a factory upgrade or a field-installed option. SOHO 97 routers have a fixed
memory configuration.
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