Thanks to the help from nelgin@EOTLBBS I now have a pretty well functioning BBS
that supports Acorn BBC Mode 7 (teletext/viewdata). With my current BBS  (OBBS
from 1984) the user selects if they would like BBC mode 7 support/vt100 or ANSI
at the start of their session. I'd like to set up SBBS so that connections
coming in on port 6502 default to the terminal settings that allow BBC Mode 7
graphics to show and connections coming in on port *TBD* default to ANSI with
vt100 fallback. Or have everything on 6502 but in the same way as my current
BBS disable auto detection and have the user select their terminal type each
session from 3 different profiles.  Is this possible? I've scoured the
different files and cannot find one containing the default terminal settings or
how to disable auto terminal detection. I did try using the PETSCII port as
6502 and changing the .asc files I've used for BBC Mode 7 to .seq but this
corrupts them.
Any help or ideas on how to achieve this, or achieve this in a different way
welcome!
--- SBBSecho 3.20-Linux