HSIM-W6 User’s Guide vContentsCHAPTER 1 INTRODUCTIONStructure of this Guide .................................................................................... 1Related Documents ........................................................................................ 2Document Conventions................................................................................... 3Getting Help .................................................................................................... 4CHAPTER 2 ABOUT THE HSIM-W6HSIM-W6 Hardware ........................................................................................ 5WAN Connection ...................................................................................... 5Additional Features................................................................................... 7Remote Management Capabilities .................................................................. 7Optional Feature ............................................................................................. 8HSIM-W6 Firmware Support ........................................................................... 8WAN Protocols ......................................................................................... 8Inverse Multiplexing................................................................................ 10Firmware Data Compression.................................................................. 10HDLC...................................................................................................... 11DHCP and NAT ...................................................................................... 11Point-to-Point Protocol............................................................................ 12PAP and CHAP Security ........................................................................ 12LQM........................................................................................................ 13Multilink Protocol .................................................................................... 13ISDN ....................................................................................................... 14ISDN Back-up......................................................................................... 15HDSL ...................................................................................................... 16Bridging and Routing .............................................................................. 16Bridging and Routing Protocol Filtering .................................................. 18System Passwords ................................................................................. 18Simple Network Management Protocol (SNMP) .................................... 19Software and Firmware Upgrades.......................................................... 22