PRACTICAL PERIPHERALS, INC.
PM1200
|
Card Type |
Modem (asynchronous) |
|
Chip Set |
Unidentified |
|
Maximum Data Rate |
1200bps |
|
Data Bus |
8-bit ISA |
|
Data Modulation Protocol |
Bell 103/212A ITU-T V.22 |
V2038
|
USER CONFIGURABLE SETTINGS | ||
|
Setting |
Label |
Position |
| DTR is ignored |
SW1/E |
On |
| DTR normal |
SW1/E |
Off |
| DCD forced high |
SW1/F |
On |
| DCD normal |
SW1/F |
Off |
|
SERIAL PORT ADDRESS | |||||
|
Setting |
IRQ |
SW1/A |
SW1/B |
SW1/C |
SW1/D |
|
COM1 (3F8h) |
4 |
On |
On |
On |
Off |
|
í COM2 (2F8h) |
3 |
Off |
On |
Off |
On |
|
COM3 (3E8h) |
4 |
On |
Off |
On |
Off |
|
COM4 (2E8h) |
3 |
Off |
Off |
Off |
On |
|
MISCELLANEOUS TECHNICAL NOTES |
Diagram not available |
Proprietary AT Command Set
|
BIT-MAPPED REGISTER S13 | ||
|
Format: |
AT [cmds] S13=n [cmds] | |
|
Default: |
Unidentified | |
|
Range: |
0-220 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Controls parity, data bits, and buffer overflow flag. | |
|
Bit |
Value |
Function |
|
1, 0 |
00 |
Not used |
|
2 |
0 1 |
Parity disabled Parity enabled |
|
3 |
0 1 |
Odd parity Even parity |
|
4 |
0 1 |
7 data bits 8 data bits |
|
5 |
0 |
Not used |
|
6 |
0 1 |
Buffer overflow flag disabled Buffer overflow flag enabled |
|
7 |
0 1 |
Space parity Mark parity |
|
BIT-MAPPED REGISTER S14 | ||
|
Format: |
AT [cmds] S14=n [cmds] | |
|
Default: |
Unidentified | |
|
Range: |
0-174 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Controls echo, result codes and display, pulse dial make/break ratio, ITU-T/Bell modes, and the long space disconnect function. | |
|
Bit |
Value |
Function |
|
0 |
í 0 |
Not used |
|
1 |
0 í 1 |
Command echo disabled Command echo enabled |
|
2 |
í 01 |
Result codes enabled Result codes disabled |
|
3 |
0 í 1 |
Display result codes in numeric format Display result codes in verbose format |
|
4 |
í 0 |
Not used |
|
5 |
0 í 1 |
33/67ms at 10pps (Europe) 39/61ms at 10pps (North America) |
|
6 |
0 1 |
ITU/T mode Bell mode |
|
7 |
í 01 |
Long space disconnect function disabled Long space disconnect function enabled |
|
BIT-MAPPED REGISTER S15 | ||
|
Format: |
AT [cmds] S15=n [cmds] | |
|
Default: |
Unidentified | |
|
Range: |
0-127 | |
|
Unit: |
Bit-mapped | |
|
Description: |
Controls baud rate, answer/originate mode, and carrier signal. | |
|
Bit |
Value |
Function |
|
1, 0 |
00 01 10 11 |
Unidentified 110bps 300bps 1200bps |
|
2 |
0 1 |
Answer mode enabled Answer mode disabled |
|
3 |
0 1 |
Originate mode disabled Originate mode enabled |
|
5, 4 |
00 01 10 11 |
Unidentified 110bps 300bps 1200bps |
|
6 |
0 1 |
Carrier signal disabled Carrier signal enabled |
|
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. |
|
Modifier |
Function |
|
P |
Pulse dialing enabled |
|
R |
Answer mode enabled, originate mode disabled following handshake initiation |
|
T |
Tone dialing enabled |
|
, |
Dialing paused for amount of time specified in S8 register |
|
/ |
Dialing paused for 125 millisecond |
|
! |
Modem commanded to go off-hook for specified time before returning on-hook |
|
@ |
Wait for quiet answer |
|
; |
Modem returned to command state after dialing |
|
REPORT INFORMATION | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] In [cmds] |
|
Description: |
Displays information requested |
|
Command |
Function |
|
I0 |
Reports modem model and speed |
|
I1 |
Reports firmware revision |
|
I2 |
Tests and reports internal memory test |
|
TEST MODES | |
|
Type: |
Register |
|
Format: |
AT [cmds] S16=n [cmds] |
|
Description: |
Controls loopback tests, analog, digital, and DTMF tone tests |
|
í Command |
Function |
| » S16=0 |
Normal mode |
|
í S16=1 |
Local analog loopback in progress |
|
í S16=2 |
DTMF tone test in progress |
|
í S16=4 |
Digital loopback in progress |