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User’s Manual C-9
AT Commands
\N3 V.42, MNP, or buffered (default).
The modem attempts to connect in V.42 error control mode.
If this fails, it attempts to connect in MNP mode. If this fails, it
connects in buffer mode and continues operation. This is
also known as V.42/MNP auto reliable mode (same as &Q5).
\N4 V.42 or disconnect. The modem attempts to connect in V.42
error control mode. If this fails, the modem disconnects.
\N5 V.42. MNP or buffered (same as \N3).
\N7 V.42. MNP or buffered (same as \N3).
Result Codes:
OK n=0,1,2,3,4,5,7
ERROROtherwise
\Qn Local flow control selection
\Q0 Disable flow control.
\Q1 XON/XOFF software flow control.
\Q3 CTS/RTS to DTE (default).
Result Codes:
OK n=0,1,3
ERROROtherwise
\Vn Protocol result code
\V0 Disable protocol result code appended to DCE speed.
\V1 Enable protocol result code appended to DCE speed
(default).
Result Codes:
OK n=0,1
ERROROtherwise
%B View numbers in blacklist
If blacklisting is in effect, this command displays the numbers for which the
last call attempted in the past two hours failed. The ERROR result code
appears in regions that do not require blacklisting.
%Cn Data compression control
This command determines the operation of V.42bis and MNP class 5 data
compression. On-line changes do not take effect until a disconnect occurs
first.
%C0 V.42bis/MNP 5 disabled. No data compression.
%C3 V.42bis/MNP 5 enabled. Data compression enabled
(default).
Result Codes:
OK n=0,3
ERROROtherwise