User guide Table of contentsVIISerial interface V.24/RS232C 161Connector assignment 161Interface cable (serial interface) 162Input signals 162Output signals 162Protocols 163Memory mode XON/XOFF 163Memory mode Robust XON/XOFF 163Extended menu functions with the ENQ/STX andETX/ACK protocols selected 163ENQ/STX protocol 164ETX/ACK protocol 164Options and accessories 165Options 165Automatic cut sheet feeder, front (ASF-F) 165Automatic cut sheet feeder, rear (ASF-R) 165Autocut facility 165Tractor 2, front 165Face down insertion 165Printer pedestal 165Paper basket 166Cable cover 166ESD brush 166Interface modules 166Optional firmware 166Accessories 167Ribbon cassettes 167Programming manuals 167Index 169