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USING MODEM STATION
87
• DAA Country displays the countries your
modem is designed for. This is important
because phone systems and
telecommunications laws vary from country
to country.
Click Link Diagnostics to bring up the “Link
Diagnostics” screen.
The “Link Diagnostics” screen displays
statistics about your last connection. This
screen is most often used as an aid in
diagnosing connection failures, but it also can
provide information about connection speeds
and phone line conditions.
• Modulation displays the speed and type of
connection.
• Carrier Frequency displays the electrical
frequency of the carrier signal.
• Symbol Rate displays the speed of the
transmission.
• Trellis Code, Nonlinear Encoding, Shaping,
and Precoding all refer to methods of
handling high speed data transmission.
• The items followed by (dB), (-dB), (-dBm),
and (msec) refer to variations in the
modulation tones that actually carry the
information.