On 2013-10-08 15:54, Sampsa Laine wrote: But some UNIX getty's DO speak Hayes AT so it's not that far-fetched an idea.. So, how do the Unix getty know that there is a hayes modem on the serial line, and not a terminal? Config files and/or command line options - some of them even know how to pass FAXES along to a fax receiving program. Not saying this should be in VMS, just that it has existed in the real world for a long time. Essentially, telling getty what kind of equipment is attached. In VMS you would not allow LOGINOUT to handle a port where something like a fax was installed. Instead you'd run the fax program, and have that handle the port. Using getty in this way can be considered either very clever, or very ugly, depending on your preferences and view on how to do things... But essentially, you'll have a getty which can do and understand a lot of different things. Johnny