Hi,
the console port indeed does not support RS232 modem control (data set ready/Data Carrier Detect (DSR/DCD), data terminal ready (DTR)). However, you cannot change the settings on the console port. You need to configure your modem to to ignore DTR and assert autoanswer. The associated Hayes-compatible commands are AT&D0 and ATS0=1, respectively.
Regards,
Nethelper