UNIDENTIFIED
2400BPS MODEM (0302AMC)
Card Type |
Modem (asynchronous) |
Chip Set |
Unidentified |
Maximum Data Rate |
2400bps |
Data Bus |
8-bit ISA |
Data Modulation Protocol |
Bell 103A/212A ITU-T V.22, V.22bis |
Error Correction/Compression |
MNP5, V.42, V.42bis |
CONNECTIONS | ||||||
Function |
Label |
Function |
Label | |||
Line out |
CN1 |
Line in |
CN2 |
SERIAL PORT ADDRESS | ||||
Setting |
JP1/A |
JP1/B |
JP1/C |
JP1/D |
COM1 (3F8h) |
Closed |
Open |
Closed |
Open |
COM2 (2F8h) |
Closed |
Open |
Open |
Closed |
COM3 (3E8h) |
Open |
Closed |
Closed |
Open |
COM4 (2E8h) |
Open |
Closed |
Open |
Closed |
INTERRUPT | ||||
Setting |
JP1/E |
JP1/F |
JP1/G |
JP1/H |
2 |
Open |
Open |
Open |
Closed |
3 |
Open |
Closed |
Open |
Open |
4 |
Closed |
Open |
Open |
Open |
5 |
Open |
Open |
Closed |
Open |
WAIT STATE | ||
Setting |
JP1/I |
JP1/J |
0 |
Closed |
Open |
1 |
Open |
Closed |
Proprietary AT Command Set
BIT MAPPED REGISTERS | |
Register |
Default |
S14 |
170 |
S21 |
0 |
S22 |
118 |
S23 |
7 |
S27 |
64 |
S28 |
0 |
DTMF ATTENUATION | |
Type: |
Configuration |
Format: |
AT [cmds] %Dn [cmds] |
Default: |
0 |
Range: |
1-7 |
Unit: |
2 dBm |
Description: |
Controls DTMF attenuation |
SECONDARY DEFAULTS | |
Type: |
Immediate |
Format: |
AT [cmds] %J [cmds] |
Description: |
Sets all S registers and AT commands to AT&F default except; S6=3s, range 3-255; S11=95ms, range 60-255; %L3, 6dBm; %D1, 2dBm. |
TEST MODES | ||
Format |
AT [cmds] S16=n [cmds] | |
Default: |
0 | |
Range: |
0-125 | |
Unit: |
Bit-mapped | |
Description: |
Controls loopback tests, analog, digital, remote digital, and self tests. | |
Bit |
Value |
Function |
0 |
í 01 |
Local analog loopback not in progress Local analog loopback in progress |
1 |
í 0 |
Not used |
2 |
í 01 |
Local digital loopback not in progress Local digital loopback in progress |
3 |
í 01 |
Modem not in remote digital loopback Remote digital loopback in progress |
4 |
í 01 |
Remote digital loopback not in progress Remote digital loopback in progress |
5 |
í 01 |
Remote digital loopback w/ self-test not in progress Remote digital loopback w/ self-test in progress |
6 |
í 01 |
Local analog loopback w/ self-test not in progress Local analog loopback w/ self-test in progress |
TRANSMIT ATTENUATION | |
Type: |
Configuration |
Format: |
AT [cmds] %Ln [cmds] |
Default: |
0 |
Range: |
1-7 |
Unit: |
2 dBm |
Description: |
Controls transmit attenuation |