TOSHIBA
T144NW MODEM
| Card Type | Modem |
| Chip Set | Unidentified |
| Maximum Modem Rate | 14.4Kbps |
| Maximum Fax Rate | 14.4Kbps |
| Data Modulation Protocol | Bell 103/212A ITU-T V.21, V.22, V.22bis, V.32ter, V.32bis |
| Fax Modulation Protocol | ITU-T V.17, V.21 CH2, V.27ter, V.29 |
| Error Correction/Compression | MNP5, V.42, V.42bis |
| Fax Class | I & II |
| Data Bus | PCMCIA |
55470
SUPPORTED COMMAND SET |
Basic AT Commands |
| AT, '+++', A/ |
| A, B, E, H, L, M, O, P, Q, T, V, W, X, Y, Z |
| &C, &F, &G, &M, &P, &R, &T, &V, &W, &Y, &Z |
Extended AT Commands |
| \A, \B, \G, \J, \K, \N, \W |
| %C, %L, %Q |
S Registers |
| S0, S1, S2, S3, S4, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S23, S24, S25, S26 |
| S28, S29, S30, S31, S32, S33, S38, S40, S91, S92, S99 |
| Note: See MHI Help File for full command documentation. Specific S-register information unavailable; S-registers may vary slightly from MHI help file. |
PROPRIETARY AT COMMAND SET
AUTO-MODE DETECTION |
|
| Type: | Configuration |
| Format: | AT [cmds] N n [cmds] |
| Description: | Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed. |
Command |
Function |
N0 |
Auto-mode detection disabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake follows interface speed |
N1 |
Auto-mode detection enabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake at highest possible speed with fallback to lower speed if necessary |
AUXILIARY RELAY CONTROL |
|
| Type: | Configuration |
| Format: | AT [cmds] &J [cmds] |
| Description: | Controls auxiliary relay |
Command |
Function |
&J0 |
Auxiliary relay remains open |
CLOCK SOURCE - SYNCHRONOUS TRANSMIT |
|
| Type: | Configuration |
| Format: | AT [cmds] &X n [cmds] |
| Description: | Selects DTE transmit clock source |
Command |
Function |
&X0 |
Modem generates clock |
&X1 |
Returns OK |
&X2 |
Returns OK |
COMMUNICATION PROTOCOLS |
||
| Type: | Configuration | |
| Format: | AT [cmds] F n [cmds] | |
| Description: | Selects the communication protocol for data calls | |
Command |
Protocol |
|
| » | F0 |
Auto-mode detection enabled |
F1 |
V.21 or Bell 103 | |
F2 |
Reserved | |
F3 |
V.23 | |
F4 |
V.22 at 1200bps | |
F5 |
V.22 | |
F6 |
V.32 or V.32bis at 4800bps | |
F7 |
V.32bis at 7200bps | |
F8 |
V.32 or V.32bis at 9600bps | |
F9 |
V.32bis at 12.0Kbps | |
F10 |
V.32bis at 14.4Kbps | |
COMMUNICATIONS MODE |
||
| Type: | Configuration | |
| Format: | AT [cmds] &Q n [cmds] | |
| Description: | Selects communications mode options | |
Command |
Mode |
|
&Q0 |
Asynchronous mode, serial port speed follows connect speed. | |
| » | &Q5 |
Error correction mode |
&Q6 |
Buffered asynchronous mode | |
DATA SET READY (DSR) |
|
| Type: | Configuration |
| Format: | AT [cmds] &S n [cmds] |
| Description: | Selects DSR options |
Command |
Function |
&S0 |
DSR forced high |
&S1 |
DSR high only while modem is handshaking or connected |
DATA TERMINAL READY (DTR) |
||||
| Type: | Configuration | |||
| Format: | AT [cmds] &D n [cmds] | |||
| Description: | Selects modem response to DTR | |||
| Note: | The action each variant of &D causes depends on the setting of &Q | |||
&Q Setting |
&D0 |
&D1 |
&D2 |
&D3 |
&Q0, &Q5, &Q6 |
Command 0 |
Command 1 |
Command 2 |
Command 4 |
&Q1, &Q4 |
Command 2 |
Command 1 |
Command 2 |
Command 4 |
&Q2, &3 |
Command 2 |
Command 2 |
Command 2 |
Command 2 |
Command |
Function |
|||
Command 0 |
Modem does not respond to DTR | |||
Command 1 |
Modem goes to command mode after DTR goes is off | |||
Command 2 |
Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. | |||
Command 3 |
Modem is initialized after DTR goes off | |||
DIAL |
|
| Type: | Immediate |
| Format: | AT [cmds] D<#> [cmds] |
| Description: | Dials telephone number according to any modifiers included in the string |
| Note: | Any combination of modifiers can be used to produce the desired dial functions in sequence. |
Command |
Function |
DL |
Re-dial last number |
DP |
Pulse dialing enabled |
DR |
Answer mode enabled; originate mode disabled following handshake initiation. |
DS=n |
Dial stored telephone number n |
DT |
Tone dialing enabled/Pulse dialing disabled |
DW |
Dialing resumed following dial tone detection |
D, |
Dialing paused for amount of time specified in S8 register |
D! |
Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. |
D@ |
Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. |
D^ |
1800Hz periodic calling tone enabled in originate mode. (Europe) |
D; |
Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
FLOW CONTROL |
|
| Type: | Configuration |
| Format: | AT [cmds] &K n [cmds] |
| Description: | Enables flow control options |
Command |
Function |
&K0 |
Flow control disabled |
&K3 |
RTS/CTS flow control enabled |
&K4 |
XON/XOFF flow control enabled |
&K5 |
Transparent XON/XOFF flow control enabled |
&K6 |
Both RTS/CTS & XON/XOFF flow control enabled |
LINE TYPE |
|
| Type: | Configuration |
| Format: | AT [cmds] &L n [cmds] |
| Description: | Selects line type |
Command |
Line Type |
&L0 |
Switched line (PSTN/Dial-up) |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] I n [cmds] |
| Description: | Displays information requested |
Command |
Function |
I0 |
Reports product code |
I1 |
Reports ROM checksum |
I2 |
Tests and reports ROM checksum |
I3 |
Reports firmware version and application codes |
I4 |
Reports OEM identifier string in either binary or ASCII format |
I5 |
Reports country code |
I6 |
Reports data pump model and internal code |
TRANSMIT CARRIER |
|
| Type: | Configuration |
| Format: | AT [cmds] C n [cmds] |
| Description: | Controls the transmit carrier switching |
Command |
Function |
C1 |
Transmit carrier enabled |
EXTENDED AT COMMANDS
AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD |
|
| Type: | Configuration |
| Format: | AT [cmds] %E n [cmds] |
| Description: | Controls auto-retrain mode and fallback/fall-forward |
Command |
Function |
%E0 |
Auto-retrain disabled |
%E1 |
Auto-retrain enabled |
V.23 MODE |
||
| Type: | Configuration | |
| Format: | AT [cmds] %F n [cmds] | |
| Description: | Selects V.23 split-speed and half-duplex | |
Command |
Function |
|
%F1 |
75bps transmit, 1200bps receive (split-speed) | |
| » | %F2 |
1200bps transmit, 75bps receive (split-speed) |
S(STATUS) -REGISTERS
BIT-MAPPED REGISTER S27 |
||
| Format | AT [cmds] S27= n [cmds] | |
| Range: | 0-111 | |
| Unit: | Bit-mapped | |
| Description: | Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes. | |
Bit |
Value |
Function |
1, 0 |
000 001 010 011 101 110 |
Asynchronous
mode, serial port speed follows connect speed Asynchronous off-line command mode and synchronous connect mode Asynchronous off-line command mode; modem autodials first number in directory, then synchronous connect mode Not supported Synchronous error correction Synchronous operation in normal mode |
2 |
0 1 |
Switched line Leased line |
3 |
0 |
Not Used |
5, 4 |
00 01 10 |
Local modem
generates transmit clock source Local DTE generates transmit clock source Remote DCE/DTE generates transmit clock source |
6 |
0 1 |
ITU/T mode Bell mode |
BIT-MAPPED REGISTER S41 |
||
| Format | AT [cmds] S41= n [cmds] | |
| Range: | 0-31 | |
| Unit: | Bit-mapped | |
| Description: | Selects compression, auto-retrain, flow control, and MNP mode. | |
Bit |
Value |
Function |
1 - 0 |
00 01 10 11 |
Data compression
disabled MNP5 enabled V.42bis enabled MNP5 and V.42bis enabled |
2 |
0 1 |
Auto-retrain
disabled Auto-retrain enabled |
3 |
0 1 |
Flow control
disabled Flow control enabled |
4 |
0 1 |
Stream mode for
MNP Block mode for MNP |
5-7 |
0 |
Not Used |
BREAK OPTIONS |
|
| Type: | Register |
| Format | AT [cmds] S82= n [cmds] |
| Description: | Sets the method for break transmission during error-control and ASB connections. |
Command |
Function |
S82=3 |
Expedited signaling, immediately send timed break |
S82=7 |
Destructive signaling, buffers cleared, immediately send timed break |
S82=128 |
In-sequence signaling, timed break sent in sequence with transmitted data |
CONNECTION FAILURE CODES |
|
| Type: | Register |
| Format | AT [cmds] S86? [cmds] |
| Description: | Reports codes which correspond to the possible causes of a connection failure |
Value |
Meaning |
0 |
Normal hang up |
4 |
Carrier signal lost |
5 |
No error-control detected for remote modem during feature negotiation |
9 |
No common protocol found |
12 |
No failure - remote modem disconnected normally |
13 |
Remote modem failed to respond after 10 re-transmissions same message |
14 |
Violation of negotiated protocol caused failure |
DCE LINE SPEED |
|
| Type: | Register |
| Format | AT [cmds] S37= n [cmds] |
| Description: | Sets the maximum allowable data exchange rate attempted during handshake process. |
Command |
Function |
S37=0 |
Speed of last connection |
S37=1 |
300bps |
S37=2 |
300bps |
S37=3 |
300bps |
S37=5 |
1200bps |
S37=6 |
2400bps |
S37=7 |
V.23 at 75/1200Kbps |
ERROR CORRECTION NEGOTIATION |
|
| Type: | Register |
| Format | AT [cmds] S36= n [cmds] |
| Description: | Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q. |
Command |
Function |
S36=0 |
Hang up |
S36=1 |
Attempt a direct connection |
S36=3 |
Attempt a buffered connection |
S36=4 |
Attempt a connection at MNP2-4; if that fails, hang up. |
S36=5 |
Attempt a connection at MNP2-4; if that fails, attempt a direct connection. |
S36=7 |
Attempt a connection at MNP2-4; if that fails, attempt a buffered connection. |
ERROR CORRECTION/COMPRESSION |
|
| Type: | Register |
| Format: | AT [cmds] S46= n [cmds] |
| Description: | Selects active error correction and compression protocols |
Command |
Function |
S46=136 |
LAPM only, no compression |
S46=138 |
LAPM with V.42bis data compression |
EXTENDED RESULT CODES |
||
| Type: | Register | |
| Format | AT [cmds] S95= n [cmds] | |
| Range: | 0-255 | |
| Unit: | Bit-mapped | |
| Description: | Works in combination with the W n command to enable extended result codes. Features enabled by S95 take precedence over the options selected by W n . | |
Bit |
Value |
Function |
0,1 |
0 |
Not used |
2 |
0 1 |
COMPRESSION
result codes disabled. COMPRESSION result codes enabled. |
3 |
0 |
Not used |
4 |
0 1 |
PROTOCOL result
codes disabled. PROTOCOL result codes enabled. |
5 |
0 1 |
CARRIER result
codes disabled. CARRIER result codes enabled. |
6 |
0 1 |
Verbose CONNECT
result codes display DTE or line speed only. Adds "/ARQ" to all verbose CONNECT result codes except "NONE." |
7 |
0 1 |
CONNECT result
code reports DTE speed. CONNECT result code reports line speed instead DTE speed. |
FEATURE NEGOTIATION OPTIONS |
|
| Type: | Register |
| Format: | AT [cmds] S48= n [cmds] |
| Description: | Selects active error correction and compression protocols |
Command |
Function |
S48=0 |
Detection negotiation disabled, XID negotiation disabled |
S48=7 |
Detection negotiation and XID negotiation enabled |
S48=128 |
Fall-back to options set in S36 |
FLOW CONTROL |
|
| Type: | Register |
| Format | AT [cmds] S39? [cmds] |
| Description: | Displays the current flow control |
Value |
Meaning |
0 |
Flow control disabled |
3 |
RTS/CTS flow control enabled |
4 |
XON/XOFF flow control enabled |
5 |
Both RTS/CTS & XON/XOFF flow control enabled |
SOFT-SWITCH FUNCTIONS |
|
| Type: | Register |
| Format | AT [cmds] S80 [cmds] |
| Description: | Further information is currently unavailable |