can the digi iap dial a modem to connect to a modbus device?

I need to use a modem to connect to my Modbus RTU, but my polling PLC is a ControlLogix. I want to send a message from the PLC which will dial a modem, then poll the RTU with the data conversion from ModbusRTU to EthernetIP (Using the DigiIAP) and then hang up the modem with another message from the PLC.

Is this possible?