I'm fairly certain you are correct. I remember the MajorBBS could handle multiple lines on its own.
I knew a couple of local DOS BBSes that ran multiple lines with PCBoard under DESQview.
I knew a couple of local DOS BBSes that ran multiple lines with PCBoard under DESQview.
PRI was a huge step. The "individual modem" days were a mess. Each modem had a serial cable, phone line, and power brick. I remember doing some maintenance in one of the POPs. There were at least 100 modems, stacked on a cheap plastic shelving unit. The shelving unit was sagging from the weight and heat of all the modems.
This early POP was haphazardly built, so no cable management. I remember a river of phone cables coming out of the wall. The power bricks were also crazy. We had power strips 2 or 3 levels deep, making it a hazard to even get behind the rack without tripping on something.