Multi-Tech Systems MTS2SA-T-R ユーザーズマニュアル
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
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
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.)
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.)
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:
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.
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.
(+ER:), or COMPRESSION (+DR:) messages apart from the fields described below.
The single line connect message format is:
CONNECT <DTE Speed>/<Modulation>/<Protocol>/<Compression>/<Line
Speed>/<Voice and Data> Where:
Speed>/<Voice and Data> Where:
DTE Speed = DTE speed, e.g., 57600.
Modulation = “V90” for V.90 modulation.
Modulation = “V90” for V.90 modulation.
“K56” for K56flex modulation.
“V34” for V.34 modulation.
“V32” for V.32 or V.32bis 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.
“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.
“DSVD” for digital simultaneous voice and data.
“V70” for G.729A digital simultaneous voice and data.