Changing from a PortServer TS to a ConnectPort TS with dialout modems, how to configure?

We have a program that dials modems using AT commands, we got it to work over Telnet connections to various terminal servers including the PortServer TS, where we had to do “set ports [range] dev=mout” to get it to talk to the modems (or possibly to even accept a telnet connection to a serial line, it was a while ago). Now we have to make it work with a ConnectPort TS, but the Command Reference for the ConnectPort doesn’t have the “set ports” command that we used on the PortServer.

Is there another command on the ConnectPort equivalent to the one we used on the PortServer? Or is there some other way to get it to work with an outgoing modem?