2TABLE OF CONTENTS1.0 Warranty Information ................................................................. 51.1 FCC Information ........................................................................... 51.2 CE Notice...................................................................................... 61.3 Service.......................................................................................... 62.0 General Information.................................................................... 72.1 Product Features .......................................................................... 72.2 Software Features ........................................................................ 7RS-232 Serial Interface ................................................................ 7PPP/SLIP...................................................................................... 8IP Forwarding/NAT ....................................................................... 9Raw TCP/TELNET ....................................................................... 9System Features ........................................................................ 10User Database............................................................................ 10Utilities ........................................................................................ 10View (Show) Features ................................................................ 112.3 Description.................................................................................. 123.0 Configuration ............................................................................ 153.1 Configuration Switches ............................................................... 15Default Settings .......................................................................... 16Detailed Switch Settings............................................................. 163.2 Software Configuration ............................................................... 16Model 2120 Software Command System ................................... 17Model 2120 Help Menu/Command Hierarchy ............................ 17Entering Commands................................................................... 19Activating Configuration Commands .......................................... 193.3 Default Configuration Parameters .............................................. 20EIA232 Interface Defaults........................................................... 20PPP Defaults .............................................................................. 20RawTCP/Telnet Defaults ............................................................ 20System Defaults ......................................................................... 21User Database Defaults ............................................................. 213.4 Initial Unit Configuration.............................................................. 213.5 Remote Configuration of the Unit ............................................... 253.6 Sample 2120 Configurations ...................................................... 26Telnet/TCP Operation................................................................. 26RawTCP Operation .................................................................... 29PPP Operation............................................................................ 32SLIP Operation ........................................................................... 353.7 User Database............................................................................ 38User Name ................................................................................. 38Password.................................................................................... 38Privilege...................................................................................... 39Creating Users............................................................................ 39Deleting All Users ....................................................................... 40Deleting A Single User ............................................................... 40