US Robotics Courier V.Everything x2 Addendum, Руководство пользователя

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Courier V.Everything x2 Addendum 7
Limiting a Range of Possible Connect Speeds
By setting &N and &U values, you can limit the range of speeds at which your
Courier I-modem with x2 connects. If a remote modem does not connect to
your Courier I-modem with x2 at a range between the speeds designated by the
&N and &U commands, your Courier modem with x2 will not allow it to
connect.
Note: The link speed associated with the &U argument cannot be greater than
the link speed associated with &N argument.
Use the following table to understand the relationship between &U and &N
commands:
If &U And &N Then your modem
Equals zero Equals zero Connects at the highest possible speed.
Is greater than zero Connects at the &N speed only.
Is greater
than zero Is greater than zero
and greater than &U Connects at the highest possible speed
in the range from &U to &N.
Table 3 - Constraints on Link Speed