CARDINAL TECHNOLOGIES, INC.
MB2250F
| Card Type | Modem (synchronous/asynchronous) |
| Chip Set | Unidentified |
| Maximum Modem Rate | 2400bps |
| Maximum Fax Rate | 4800bps |
| Data Modulation Protocol | ITU-T V.2 Bell 212A |
| Fax Modulation Protocol | Unidentified |
| Error Correction/Compression | Unidentified |
| Fax Class | Unidentified |
| Data Bus | 8-bit ISA |
| Card Size | Half-length, half-height card |
CONNECTIONS |
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Function |
Label |
Function |
Label |
| Line in/out | CN1 |
Line in/out | CN2 |
SERIAL PORT ADDRESS |
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Setting |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
COM1 (3F8h) |
On |
On |
On |
Off |
COM2 (2F8h) |
Off |
On |
Off |
On |
COM3 (3E8h) |
On |
Off |
On |
Off |
COM4 (2E8h) |
Off |
Off |
Off |
On |
SUPPORTED COMMAND SET |
Basic AT Commands |
| AT, ‘+++’, A/ |
| A, B, C, E, H, M, O, Q, V, X, Y |
| &C, &D, &F, &G, &L, &P, &R, &S, &T, &V, &W, &Y, &Z |
S Registers |
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S25, S26 |
| Note: See MHI Help File for full command documentation. |
Proprietary AT Command Set
| 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 |
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; |
Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] In [cmds] |
| Description: | Displays information requested |
Command |
Function |
I0 |
Reports modem model and speed |
I1 |
Reports ROM checksum |
I2 |
Tests and reports ROM checksum |
I3 |
Reports software ID |
I4 |
Reports configuration |
SOFT RESET |
|
| Type: | Immediate |
| Format: | AT [cmds] Zn [cmds] |
| Description: | Restores modem profiles to active user configuration |
SPEAKER VOLUME |
|
| Type: | Configuration |
| Format: | AT [cmds] Ln [cmds] |
| Description: | Controls speaker volume |
Command |
Function |
L0 |
Low volume setting |
L1 |
Low volume setting |
L2 |
Medium volume setting |
L3 |
Highest volume setting |
S(status) REGISTERS
BIT-MAPPED REGISTER S21 |
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| Format | AT [cmds] S21=n [cmds] | |
| Range: | 0-253 | |
| Unit: | Bit-mapped | |
| Description: | Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function. | |
Bit |
Value |
Function |
0 |
0 1 |
Selects RJ-11, RJ-41S, or RJ45S
jack Selects RJ-12 or RJ-13 jack |
1 |
0 |
Not used |
2 |
0 1 |
CTS follows RTS CTS forced high |
4, 3 |
00 01 10 11 |
DTR signal ignored Modem goes to command mode on low DTR Modem disconnects on low DTR; Auto-Answer is disabled. Modem is initialized on low DTR |
5 |
0 1 |
DCD forced high DCD normal |
6 |
0 1 |
DSR forced high DSR normal |
7 |
0 1 |
Long space disconnect function
disabled Long space disconnect function enabled |
BIT-MAPPED REGISTER S22 |
||
| Format | AT [cmds] S22=n [cmds] | |
| Range: | 0-255 | |
| Unit: | Bit-mapped | |
| Description: | Controls speaker volume and controls, limits results codes, and pulse dial make/break ratio. | |
Bit |
Value |
Function |
1, 0 |
00 01 10 11 |
Off volume Low level volume Medium level volume High level volume |
3, 2 |
00 01 10 11 |
Speaker off Speaker off on carrier Speaker always on Speaker on during handshake |
6 - 4 |
000 100 101 110 111 |
Basic result codes only enabled Basic and connection speed result codes enabled Basic and connection speed result codes and dialtone detection enabled All result codes except dialtone detection enabled All result codes enabled |
7 |
0 1 |
39/61ms at 10pps (North America) 33/67ms at 10pps (Europe) |
BIT-MAPPED REGISTER S23 |
||
| Format | AT [cmds] S23=n [cmds] | |
| Range: | 0-189 | |
| Unit: | Bit-mapped | |
| Description: | Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone. | |
Bit |
Value |
Function |
0 |
0 1 |
Remote digital loopback denied Remote digital loopback allowed |
3 - 1 |
000 001 010 011 100 101 110 |
Sets serial port speed to
0-300bps Sets serial port speed to 600bps Sets serial port speed to 1200bps Sets serial port speed to 2400bps Sets serial port speed to 4800bps Sets serial port speed to 9600bps Sets serial port speed to 19200bps |
5, 4 |
00 01 10 11 |
Parity even Space Parity Parity odd Mark or No Parity |
7, 6 |
00 01 10 |
Guard tone disabled Guard tone 550Hz enabled Guard tone 1800Hz enabled |
BIT-MAPPED REGISTER S27 |
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| 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 |
00 01 10 11 |
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 |
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 |
OPTION REGISTER |
|
| Type: | Register |
| Format | AT [cmds] S14=n [cmds] |
| Default: | 170 |
| Description: | No other information available |