3Com DIGITAL MODEM User Manual page 31

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HAPTER
You should have received this SPID from your telephone
company.
CAUTION: If the ISDN line has been configured with only one
telephone number (Point-to-Point), do not include the SPID.
5 Specify which device should receive the calls coming to
Phone Number 1.
You can select Phone Port or Internal Fax/Modem. If your model
has the internal analog fax modem (Models 3C872 and 3C877),
you can select both.
If both boxes are checked, the internal analog fax modem
and the phone will both ring, enabling you to answer using
either device.
6 If you have a second telephone number associated with
your ISDN telephone line (some telephone companies
require two), enter the number and corresponding SPID in
the Phone Number 2 and SPID Number 2 fields.
7 Specify which device should receive the calls coming to
Phone Number 2.
8 Confirm that the parameters listed in steps 3 through 7
are correct.
9 Click the Update Configuration button to update this
information to the 3Com Impact digital modem.
10 Reset the digital modem by turning the power switch off
and then on again.
If the parameters match those registered at the telephone
company ISDN switch, the D channel LED lights for a few
minutes, flashes for several seconds, and then turns off. If the
LED continues to flash or remains lit, see Chapter 3,
"Troubleshooting."
11 Go to the section "Placing and Receiving Calls" to place
your first call.
2: I C
NSTALLING AND
D
ONFIGURING THE IGITAL
M
ODEM