3Com 3C900B Installation And Operating Instructions Manual page 42

11. When you see this screen, you are ready to
register your new modem. Click By
Modem. We recommend you choose the
By Modem option because it's a great
way to verify that your Sportster modem is
correctly installed.
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S I
OFTWARE NSTALLATION AND
12. When you see this screen...
T
ESTING
If you need to dial a prefix (such as 9) to
make a call outside your building, type
the prefix before the 1 in the Prefix box
and then click Dial. If the modem still
does not dial the number properly, you
may need to insert a comma between the
prefix and the 1 to force the modem to
pause.