If these devices are not owned by uucp, use the, Enter this command to connect to the non-modem, Type in atz and press enter. the modem should r – Comtrol SCO OpenServer User Manual

Page 23: After verifying that the modem is responding, If desired, perform these steps to test dialin, A. connect to the non-modem control port. (see ste, B. type in atdtphonenumber, where phonenumber is t, C. when you press enter, the system should connect, D. when you are done, enter ~./ to close the conne, Verify that /etc/inittab is set up correctly