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Extended-reach ADSL (ER ADSL)
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SRA (Seamless Rate Adaptation)
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Autonegotiating rate adaptation
•
ADSL physical connection ATM (Asynchronous Transfer Mode) AAL5
(Adaptation Layer type 5)·
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Multiprotocol over AAL5 (Request For Comments (RFC) 2684/1483)
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Support Point-to-Point-Protocol over ATM AAL5 (PPPoA) (RFC 2364)
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PPP over Ethernet support for DSL (Digital Subscriber Line) connection
(RFC 2516)
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Support Virtual Circuit (VC) based and LLC (Logical Link Control) based
multiplexing
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Support OAM (Operational, Administration and Maintenance) VC Hunt
•
I.610 F4/F5 OAM
Networking compatibility
Your Business Secure Router is compatible with the major ADSL Digital
Subscriber Line Access Multiplexer (DSLAM) providers, making configuration
as simple as possible.
Multiplexing
The Business Secure Router supports VC-based and LLC-based multiplexing.
Encapsulation
The Business Secure Router supports PPPoA (RFC 2364 - PPP over ATM
Adaptation Layer 5), RFC 1483 encapsulation over ATM, MAC (Media Access
Control) encapsulated routing (ENET encapsulation) as well as PPP over Ethernet
(RFC 2516).
Four-Port switch
A combination of switch and router makes your Business Secure Router a
cost-effective and viable network solution. You can connect up to four computers
or phones to the Business Secure Router without the cost of a switch. Use a switch
to add more than four computers or phones to your LAN.
Chapter 1 Getting to know your Business Secure Router 35
Nortel Business Secure Router 252 Configuration — Basics
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Table of Contents
Troubleshooting
