On 30 Sep 2020, IB Joe said the following...
 
 IJ> A few questions... what BBS software are you going to use??  If the BBS
 IJ> is not dialup ready what's your plan there...

I used Synchronet's SEXPOTS to add dialup support to my Mystic board on Win32.

All SEXPOTS does is answer the modem and then send that to Telnet.  Over VoIP
phone lines I was only able to get a 19,200 to 38,400 baud connection, but it
worked quite well.  I don't have it setup anymore, because... why?

Setup was quite easy, just edit the sexpots.ini file & then run SEXPOTS.EXE
-com 4 -baud 38400.  (At least that's what I ran for my USB modem on my voip
line, YMMV).

Jay

... Want to hear something terrible? Paper. See? I told you it was tear-able.

--- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)