29
MNP Operation
The On-Line EXPRESS Modem supports all of the preceding classes. The
following AT Commands apply to the MNP protocol. Default values are
highlighted.
Error Correction Operating Mode
. Determines the type of error control used
by the modem when sending or receiving data.
AT\N0
Buffer mode (no error control)
AT\N1
Direct mode (no error control or data buffering)
AT\N2
MNP or Disconnect mode. This mode attempts toconnect
using MNP2-4 error control procedures. If this fails, the
modem disconnects. Also known as MNP Reliable Mode.
AT\N3
V.42, MNP, or Buffer mode. The modem attempts to connect
in V.42 error control mode. If this fails, the modem attempts
to connect in MNP mode. If this fails, the modem connects in
Buffer mode and continues operation. Also known as V.42/
MNP Auto Reliable mode. (DEFAULT)
AT\N4
V.42 or Disconnect mode. The modem attempts to connect
in V.42 error control mode using longer timeout values for a
reliable connection. If this fails, the call will be disconnected.
This is also known as V.42 Reliable mode. To be used for cellular
calls and noisy lines.
Local Flow Control Selection
AT\Q
Local Flow Control
AT Commands for V.42/V.42bis
The following AT commands apply to the V.42/V.42bis protocol:
Compression Control
.
Determines whether or not modem will use data
compression.
AT%C0
V.42bis/MNP5 disabled. No data compression.
AT%C1
V.42bis/MNP enabled. Data compression for both sending
and receiving data (default).
Command Reference
Summary of Contents for M144Ai
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