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Modem Reference 6-19
\Kn Break Control
The AT\Kn command determines how the modem processes a Break
signal received from the local DTE during a connection (online).
\K5 Modem sends Break to remote modem in sequence
with transmitted data, non-destructive/non-expedited
(default)
\Nn Error Mode Control Selection
The AT\Nn command sets the type of error correction supported by the
modem when sending or receiving data.
\N0 Buffered mode. No error control (same as &Q6).
\N1 Buffered mode (same as \N0)
\N2 LAPM, MNP or disconnect mode. This is also known
as reliable mode.
\N3 LAPM, MNP, or buffered (default). The modem
attempts to connect in LAPM error control mode. If
this fails, the modem attempts to connect in MNP
mode. If this fails, the modem connects in buffered
mode and continues operation. This is also known as
V.42 auto-reliable mode (same as &Q5)
\N4 LAPM or disconnect. The modem attempts to connect
in LAPM error control mode. If this fails, the call will
be disconnected.
\N5 MNP or disconnect mode. The modem attempts to
connect using MNP 2-4 error control procedures. If
this fails, the modem disconnects. This is also known as
MNP reliable mode.
\Qn Local Flow Control Selection
The AT\Qn command sets the type of flow control used on the serial
port to adjust for differences in modem port speed.
\Q0 Disables flow control (same as &K0)
\Q1 Sets flow control to XON/XOFF (same as &K4)
\Q3 RTS/CTS to DTE (default; same as &K3)