The Asynchronous Terminal Emulation (ATE) program must be set up on the system.
To change the settings in the ate.def file, perform the following steps:
The changes made to the ate.def file take effect the next time ATE is run from the directory containing the customized ate.def file.
The user can keep a copy of the ate.def file in any directory to which they have read and write permissions. For example, if the user needs to run the ATE program with different defaults at different times, keep multiple copies of the ate.def file, with the appropriate settings, in different subdirectories of the $HOME directory. However, multiple copies of the ate.def file use system storage. As an alternative, temporarily change most settings with the ATE alter and modify subcommands. Use a dialing directory entry to change settings for an individual modem connection.
How to Set up an ATE Dialing Directory
ate.def File Format, Dialing Directory File Format for ATE
The ate command.
The alter subcommand, modify subcommand.