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SI2000 Callisto821+ Router Users Guide 
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1  SI2000 CALLISTO821+ ROUTER 
1.1  Features of SI2000 Callisto821+ Router 
 
Your SI2000 Callisto821+ Router router features: 
high speed data transmission on single twisted copper pair for Internet access 
full rate operations up to 24 Mbit/s in downstream 
10/100BaseT Ethernet port for LAN or PC connection 
PPPoE (RFC2516) connection support for accessing the Internet 
PPP over CHAP or PAP 
support for PPP over ATM 
support for IP over ATM 
RFC1483 bridged and routed support 
IEEE 802.1q VLAN support 
IEEE 802.1p Ethernet based quality of service 
DHCP server for easy IP address management including  
- DHCP 
relay 
- DNS 
client 
- DNS 
relaying 
WEB management and Telnet management over CLI (Command Line Interface) for LAN users 
firmware upgrade over WEB management 
support for VC based and LLC based multiplexing 
-  NAT (Network Address Translation) for single IP address Internet connection, used by the whole LAN 
community 
firewall filtering functions, allowing better network security and management 
- intrusion 
detection 
1.2  Using SI2000 Callisto821+ Router 
1.2.1 Internet 
access 
Your SI2000 Callisto821+ Router can also be used for high speed Internet connections. The TCP/IP 
standards, most commonly used for using the Internet, are supported by the router. The PPPoE connections 
in dial-up or dial-in mode are also possible. In order to use your SI2000 Callisto821+ Router for Internet 
access, there must be a DSLAM installed at a provider company's infrastructure near you. DSLAM is a rack 
of ADSL line cards that links many customer ADSL connections to a single high speed ine. A typical Internet 
access application is shown below on figure 2. 
 
You can also use NAT (Network Address Translation) services that your SI2000 Callisto821+ Router 
provides when setting up an Internet connection. This feature allows multiple users on LAN to use the 
Internet connection, basing on one IP address. The DNS server and DNS relaying is also supported.