IBM CORPORATION
PC CARD MODEM WITH GSM
|
Card Type |
Modem, Fax |
|
Chip Set |
Unidentified |
|
Maximum Modem Rate |
56Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Modulation Protocol |
Unidentified |
|
Fax Modulation Protocol |
Unidentified |
|
Error Correction/Compression |
Unidentified |
|
Fax Class |
Unidentified |
|
Data Bus |
PCMCIA |
55021
|
SUPPORTED COMMAND SET |
|
Basic AT Commands |
|
AT, ‘+++’, A/ |
|
A, B, E, F, H, M, O, Q, S, V, W, X, Y, Z |
|
&C, &D, &R, &T, &V, &W, &Y, &Z |
|
Extended AT Commands |
|
\A, \B, \K |
|
%C, %E, %L, %Q |
|
S Registers |
|
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S25, S26, S29, |
|
S30, S31, S32, S33, S38, S40, S41, S95 |
|
Special Commands |
|
+MS |
|
Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
|
AUTO-MODE DETECTION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Nn [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 |
|
í N1 |
In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary. In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103 |
|
COMMUNICATIONS MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Qn [cmds] |
|
Description: |
Selects communications mode options |
|
Command |
Mode |
|
í &Q0 |
Direct asynchronous mode |
|
&Q4 |
Auto-synchronous mode |
|
&Q5 |
Error correction mode |
|
&Q6 |
Buffered asynchronous mode |
|
DATA SET READY (DSR) | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Sn [cmds] |
|
Description: |
Selects DSR options |
|
Command |
Function |
|
&S0 |
DSR forced high |
|
í &S1 |
DSR high only while modem is handshaking or connected |
|
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 |
|
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"WXY" |
Optional method of denoting telephone numbers. Letters enclosed in quotes are interpreted as numbers according to the system found on a telephone keypad. |
|
D^ |
Changes the state of call tone |
|
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& |
Wait for credit card (bong) tone before continuing with the dial string |
|
D; |
Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
|
FACTORY DEFAULT PROFILE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &F [cmds] |
|
Description: |
Sets values in active profile to values found in the default profile |
|
Command |
Function |
|
í &F0 |
Load factory configuration 0 |
|
FLOW CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] &Kn [cmds] |
|
Description: |
Enables flow control options |
|
Command |
Function |
|
&K0 |
Flow control disabled |
|
í &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 |
|
REPORT INFORMATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] In [cmds] |
|
Description: |
Displays information requested |
|
Command |
Function |
|
I0 |
Reports the product code |
|
I1 |
Reports firmware checksum |
|
I2 |
Tests and reports ROM checksum |
|
I3 |
Report software release code |
|
I4 |
Report product identifier |
|
SPEAKER VOLUME | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Ln [cmds] |
|
Description: |
Controls speaker volume |
|
Command |
Function |
|
L0 |
Lowest volume setting |
|
L1 |
Low volume setting |
|
í L2 |
Medium volume setting |
|
L3 |
Highest volume setting |
Extended AT Commands
|
ERROR CORECTION PROTOCOL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] /Nn [cmds] |
|
Description: |
Controls the error correction protocol |
|
Command |
Function |
|
/N0 |
MNP and LAPM disabled |
|
í /N1 |
MNP and LAPM disabled |
|
/N2 |
V.42 reliable enabled |
|
/N3 |
V.42 auto-reliable mode enabled |
|
/N4 |
LAPM reliable mode enabled |
|
/N5 |
MNP reliable mode enabled |
|
INITIATE MNP RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \O [cmds] |
|
Description: |
Initiates MNP reliable mode from normal or direct mode |
S(status) -REGISTERS
|
BIT-MAPPED REGISTER | ||
|
Type: |
Register | |
|
Format: |
AT [cmds] S23=n [cmds] | |
|
Unit: |
Bit-mapped | |
|
Description: |
Digital loop-back control | |
|
Bit |
Value |
Function |
|
0 |
0 1 |
Remote request for remote digital loop-back disabled Remote request for remote digital loop-back enabled |
|
3,2,1 |
000 010 011 100 101 111 |
DTE baud rate = 300 DTE baud rate = 1200 DTE baud rate = 2400 DTE baud rate = 4800 DTE baud rate = 9600 DTE baud rate = 19200 |
|
5,4 |
00 01 10 11 |
Parity even Not used Odd parity No parity |
|
BIT-MAPPED REGISTER S27 | ||
|
Format |
AT [cmds] S27=n [cmds] | |
|
Default: |
Unidentified | |
|
Range: |
0-111 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes. | |
|
Bit |
Value |
Function |
|
3, 1, 0 |
000 001 010 011 100 101 111 |
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 Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR Auto-synchronous mode Error correction mode Buffered asynchronous mode |
|
6 |
0 1 |
ITU/T mode Bell mode |
|
7 |
0 |
Reserved |
|
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 |
|
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. | ||
|
Bit |
Value |
Function | |
|
2, 1, 0 |
0 1 10 11 100 101 110 111 |
Modem disconnects Modem stays on-line and a direct mode connection is established Reserved Modem stays on-line and a normal mode connection is established An MNP connection is attempted and if it fails, the modem disconnects An MNP connection is attempted and if it fails, a direct mode connection is established Reserved An MNP mode connection is attempted and if it fails, a normal mode connection is established | |
|
7 - 3 |
0 |
Reserved | |
|
ERROR CORRECTION/COMPRESSION | |||
|
Type: |
Register | ||
|
Format: |
AT [cmds] S46=n [cmds] | ||
|
Description: |
Selects active error correction and compression protocols | ||
|
Command |
Function | ||
|
S46=136 |
LAP-M only, no compression | ||
|
S46=138 |
LAP-M with V.42bis data compression | ||
|
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 | ||
|
í 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=n [cmds] | |
|
Description: |
Displays the current flow control | |
|
Bit |
Value |
Function |
|
2, 1, 0 |
0 11 100 101 110 |
No flow control RTS/CTS XON/XOFF Transparent XON Both RTS/CTS and XON/XOFF |
|
7 - 3 |
0 |
Reserved |
|
LINE SPEED | ||
|
Type: |
Register | |
|
Format |
AT [cmds] S37=n [cmds] | |
|
Description: |
Sets the line connection speed | |
|
Bit |
Value |
Function |
|
4, 3,2,1,0 |
00000 00010 00100 00110 00100 00101 0110 11000 11100 11110 |
Attempt auto mode connection Attempt 300bps connection Attempt 300bps connection Attempt 300bps connection Reserved Attempt V.32bis/V.32 4800bps connection Attempt 2400bps connection Attempt V.23 connection Attempt V.32bis/V.32 9600bps connection Attempt V.32bis/V.32 12000bps connection |