[net.micro.apple] 1200 baud with softerm// and super serial

hong@garfield.UUCP (11/12/85)

hi,
i just install my signalman mark xii modem with super serial card
using softerm ii program.
everything is fine, no first character missing with 80 column card
,but i can't read the response from my modem. eg, i type attd xxxxxx
to ask the smart modem to autodial, i'm suppose to see 'attd xxxxxx'
on screen and 'connect' when the carrier is detected.
it works fine when i'm using my apple communication card with 300
baud. 
would anybody in networld tell me what happens?
thank you.
hong