Installing a modem on a serial accelerator ports

I had been using a modem installed on a Digi accelerator port to dial in to an SCO open server r5 server. On monday it quit working and I realy don't know how it was installed and configured. I have tested the modem on a PC and it works. The port the modem is connected to is ttyB06 and I have verified the setting in the mpi utility. I have also tried to go through the steps outlined in the system admin guid. I can't get it to work, can U help?

Installing a modem on a PC is very diffent than UNIX-like systems. Suggest you dive into topics such as getty and uugetty. This is one good place to start.