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MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 89
Modem AT Commands & S-Registers
must be connected to a modem with a V.42 protocol (MNP or LAP-M).
The V.42 standard includes MNP Class 3 and 4 and LAP-M error correction
methods.
\N5 enables auto-reliable mode. During the handshaking procedures at the
start of the online connection, the modem queries whether the other modem
is using V.42 error correction. If the modem determines that the other
modem is using V.42, it switches itself into reliable (V.42) mode and
enables error correction. If it determines that the other modem is not using
V.42, the modem remains in non-error correction mode. (This is the same as
\N3 and \N7.)
\N7 enables auto-reliable mode. During the handshaking procedures at the
start of the online connection, the modem queries whether the other modem
is using V.42 error correction. If the modem determines that the other
modem is using V.42, it switches itself into reliable (V.42) mode and
enables error correction. If it determines that the other modem is not using
V.42, the modem remains in non-error correction mode. (This is the same as
\N3 and \N5.)
%Cn Data Compression
n = 0 or 1
Default: %C1
The %C command allows you to disable data compression. Data
compression is normally enabled.
%C0 disables V.42bis/MNP 5 data compression.
%C1 enables V.42bis/MNP 5 data compression.
Immediate Action Commands
Use immediate action commands to obtain information about AT commands
and current modem settings.
A/ Repeat Last Command
Default: None
Type A/ to repeat the previous command. Do not precede this command
with AT or press ENTER to execute it.
In Information Request