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16 CHAPTER 1: INTRODUCTION
Protocols
■ IETF PPP (RFC 1661, 1662, 1663)
■ IETF Password Authentication Protocol (PAP) and Challenge Handshake
Authentication Protocol (CHAP) security (RFC 1994)
■ MS-CHAP support (as defined in Network Working Group Information Memo:
Microsoft PPP CHAP Extensions. S. Cob, Rev. 1.3 March 1997 including only
the functionality that keeps with IETF 1994).
■ IP address negotiation using IPCP (RFC 1332)
■ Network Address Translation (NAT) between LAN and WAN (RFC 1631)
■ Point-to-Point Tunneling Protocol (PPTP)
Error Control and Data Compression
■ ITU-T V.42
■ ITU-T V.42bis
■ MNP 2-5
Modulation Schemes
■ V.90
■ Backwards compatible with all US Robotics 56K Standards
■ ITU-T V.34+
■ ITU-T V.34
■ ITU-T V.32bis
■ ITU-T V.32
■ ITU-T V.22bis
■ ITU-T V.22
■ ITU-T V.23
■ Bell 212A
■ ITU-T V.21
■ Bell 103
Security
■ PAP CHAP and MS-CHAP support
Upgradability
■ Flash memory for field firmware updates
■ Firmware posted on 3Com’s Web site
■ Fully upgradable to future 56K standards
Diagnostics
■ LED status display
■ Statistics display