2400BPS MODEM (0302AMC) modem/telephone/ISDN Settings and Configuration
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 |
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