Multi-Tech Systems MTS2SA-T - Manual (Page 97)

Chapter 10
− Modem Mode AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 97
Command: \Nn Operating Mode – Error Correction
Values: n = 0–5
Default: 5
Description: Controls the preferred error-correcting mode to be negotiated in a subsequent data
connection.
\N0 Selects normal speed buffered mode (disables error-correction mode).
\N1 Serial interface selected - Selects direct mode and is equivalent to &M0
mode of operation.
\N2 Selects reliable (error-correction) mode. The modem will first attempt a
LAPM connection and then an MNP connection. Failure to make a reliable
connection results in the modem hanging up. (Forces S36=4 and S48=7.)
\N3 Selects auto-reliable mode. This operates the same as \N2 except failure to
make a reliable connection results in the modem falling back to the speed
buffered normal mode. (Forces S36=7 and S48=7.)
\N4 Selects LAPM error-correction mode. Failure to make an LAPM error-
correction connection results in the modem hanging up. (Forces S48=0.)
\N5 Selects MNP error-correction mode. Failure to make an MNP error-correction
connection results in the modem hanging up. (Forces S36=4 and S48=128.)
Command: \Vn Single Line Connect Message Enable (Not available in V.22bis)
Values: n = 0, 1
Default: 1
Description:
\V0 Connect messages are controlled by the command settings X, W, and S95.
\V1 Connect messages are displayed in the single line format described below subject to
the command settings V (Verbose) and Q (Quiet). In Non-Verbose mode (V0), single
line connect messages are disabled and a single numeric result code is generated for
CONNECT DTE.
When single line connect messages are enabled, there are no CARRIER, PROTOCOL
(+ER:), or COMPRESSION (+DR:) messages apart from the fields described below.
The single line connect message format is:
CONNECT ////Speed>/ Where:
DTE Speed = DTE speed, e.g., 57600.
Modulation = “V90” for V.90 modulation.
“K56” for K56flex modulation.
“V34” for V.34 modulation.
“V32” for V.32 or V.32bis modulation.
Note : Modulation is omitted for all other modulations.
Protocol = “NONE” for no protocol.
“ALT” for Microcom Network Protocol.
“LAPM” for LAP-M protocol.
Compression = “ALT” for Microcom MNP5 compression.
“V42B” for V.42bis compression.
Note : Compression is omitted if protocol is NONE.
Line Speed = Asymmetric rates display as /rate:TX/rate:RX; e.g., /1200 TX/75 RX.
Symmetric rates display as a single DCE rate, e.g., 14400.
Voice and Data = Blank for Data mode only.
“SVD” for AudioSpan analog simultaneous audio/voice and data.
“DSVD” for digital simultaneous voice and data.
“V70” for G.729A digital simultaneous voice and data.