4-10
Netopia ISDN Modem User’s Guide
If the D channel LED indicates a proper connection to the ISDN
switch by turning off and you are using Windows, you can use your
communications software to establish an ISDN connection. Go to
the next section to place calls using your ISDN modem.
If the D channel LED indicates a proper connection to the ISDN
switch by turning off and you are using Windows 95, to complete
the Windows 95 installation
see the “Installing the Windows 95
modem driver” section on page 4-10.
If the D channel LED indicates a proper connection to the ISDN
switch by turning off and you are using Windows NT, to complete the
installation
see the “Installing the Windows NT modem driver”
section on page 4-16.
Placing calls with Windows
To place calls using Windows, you can use any standard
communications application that recognizes AT commands.
Note:
Most areas require you to dial ISDN calls with 11 digits (for
example, 1-800-555-1212), even for local calls.
Note that you must use Multilink PPP to make calls using two ISDN
B channels. For information.
see the “Using Multilink PPP” section
on page 6-4.
Installing the Windows 95 modem driver
If you are using Windows 95, you need to install a modem driver for
your ISDN modem before you can place calls. Follow the
instructions below to install the Windows 95 modem driver.
Note:
The serial por t speed of most PCs limits the computer’s
maximum data transmission rate. Typically, PCs are limited to a
maximum transmission speed of 115.2 Kbps. However, advanced
serial cards and drivers are available to boost the serial por t speed
up to 230.4 Kbps. (For more information,
see the “Optimizing serial
por t per formance” section on page 6-9.
)
