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