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# 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 | Remote request for remote digital |
| | | loop-back disabled |
| | 1 | |
| | | Remote request for remote digital |
| | | loop-back enabled |
|-------+-------+--------------------------------------------|
| 3,2,1 | 000 | DTE baud rate = 300 |
| | | |
| | 010 | DTE baud rate = 1200 |
| | | |
| | 011 | DTE baud rate = 2400 |
| | | |
| | 100 | DTE baud rate = 4800 |
| | | |
| | 101 | DTE baud rate = 9600 |
| | | |
| | 111 | DTE baud rate = 19200 |
|-------+-------+--------------------------------------------|
| 5,4 | 00 | Parity even |
| | | |
| | 01 | Not used |
| | | |
| | 10 | Odd parity |
| | | |
| | 11 | 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, | 000 | Asynchronous mode, serial port speed |
| 1, 0 | | follows connect speed |
| | 001 | |
| | | Asynchronous off-line command mode and |
| | 010 | synchronous connect mode |
| | | |
| | 011 | Asynchronous off-line command mode; modem |
| | | autodials first number in directory, then |
| | 100 | synchronous connect mode |
| | | |
| | 101 | Asynchronous off-line command mode on low |
| | | DTR, synchronous connect mode on high DTR |
| | 111 | |
| | | Auto-synchronous mode |
| | | |
| | | Error correction mode |
| | | |
| | | Buffered asynchronous mode |
|------+-------+---------------------------------------------|
| 6 | 0 | ITU/T mode |
| | | |
| | 1 | 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 | Modem disconnects |
| | | |
| | 1 | Modem stays on-line and a direct mode |
| | | connection is established |
| | 10 | |
| | | Reserved |
| | 11 | |
| | | Modem stays on-line and a normal mode |
| | 100 | connection is established |
| | | |
| | 101 | An MNP connection is attempted and if |
| | | it fails, the modem disconnects |
| | 110 | |
| | | An MNP connection is attempted and if |
| | 111 | 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 | No flow control |
| | | |
| | 11 | RTS/CTS |
| | | |
| | 100 | XON/XOFF |
| | | |
| | 101 | Transparent XON |
| | | |
| | 110 | 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, | 00000 | Attempt auto mode connection |
| 3,2,1,0 | | |
| | 00010 | Attempt 300bps connection |
| | | |
| | 00100 | Attempt 300bps connection |
| | | |
| | 00110 | Attempt 300bps connection |
| | | |
| | 00100 | Reserved |
| | | |
| | 00101 | Attempt V.32bis/V.32 4800bps connection |
| | | |
| | 0110 | Attempt 2400bps connection |
| | | |
| | 11000 | Attempt V.23 connection |
| | | |
| | 11100 | Attempt V.32bis/V.32 9600bps connection |
| | | |
| | 11110 | Attempt V.32bis/V.32 12000bps connection |