Multi-Tech Systems MT5600BL - Manual (Page 51)

4 AT Commands, S-Registers, and Result Codes
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Command: %Q Line Signal Quality
Values: None
Default: None
Description: %Q Reports line signal quality (DAA-dependent) as a three-digit
number. Returns the higher order byte of the EQM value.
Based on the EQM value, retrain or fallback/fall forward may
be initiated if enabled by %E1 or %E2.
Command: %U PCM Code Selection
Values: n = 0 or 1
Default: 0
Description: Specifies the PCM code type for 56K modulation. Note, how-
ever, that the modem automatically selects the code type if the
server sends the proper ID.
%U0 Selects µ-Law coding—used in North America and Japan.
%U1 Selects A-Law coding—used outside North America and Japan.
Note: See also the +MS= command.
Command: \A n Maximum MNP Block Size
Values: n = 0, 1, 2, or 3
Default: 1
Description: \A0 64-character maximum block size.
\A1 128-character maximum block size.
\A2 192-character maximum block size.
\A3 256-character maximum block size.
Command: \B n Transmit Break
Values: n = 0–9 in 100 ms units
Default: 3
Description: In non-error-correction mode only, sends a break signal of the
specified length to a remote modem. Works in conjunction
with the \K command.
Command: \K n Break Control
Values: n = 0–5
Default: 5
Description: Controls the response of the modem to a break received from
the computer, the remote modem, or the \B command. The
response is different for each of three different states.
Data mode. The modem receives the break from the computer:
\K0 Enter online command mode; no break sent to the remote
modem.
\K1 Clear data buffers and send break to the remote modem.
\K2 Same as \K0.
\K3 Send break immediately to the remote modem .
\K4 Same as \K0.
\K5 Send break to the remote modem in sequence with the trans-
mitted data.