ZyXEL Elite 2864 User Guide - Page 217

Chapter 19 GENERAL HINTS AND TIPS Activating Saved Settings upon Turning-on Use the command ATWn to save a set of parameters into one of the available profiles. Make these settings your current settings by resetting the modem from the profile using the command ATZn. The active profile will be used at the next poweron. Refer to chapter 7 for further details. Avoiding Low Throughput and Loss of Data Some computers serve and poll their serial port so slowly that data is lost. You may remedy this situation by using a better equipped computer or by using more efficient terminal software. Please refer to the vendor-specific chapters. Chances are that you will find some tips specifically for your machine. In some cases, enabling throughput averaging (ATS42.1=1) may alleviate the problem. More information on this feature is found in chapter 10. Disabling Compression May Yield Faster Transfers Using MNP5 data compression on files which are already compressed (.ZIP, .LZH, .SIT, .ZOO, .TAR and others) lowers the transfer rate. To disable MNP5, use ATS38.5=1. The V.42bis compression scheme is more intelligent than MNP5 and recognizes already compressed files. It does not try to compress them again and thus no speed is lost during a data transfer. More information can be found in chapter 10. Avoiding Disconnections during a Handshake on a Leased Line If data is sent from the DTE to the DCE (computer/terminal to modem) during a handshake attempt on a leased line connect, the modem will abort the handshake and no connection is made. Avoid this by sending ATS35.1=1 to the modem. Avoiding Disconnections when Making a Data Call The modems of the 2864 series return a RINGING message when the remote modem does not answer on the first ring. Some software packages confuse the RING- 19-1