PRACTICAL PERIPHERALS, INC.
PC144HC
|
Modem Type |
Data (synchronous/asynchronous)/Fax |
|
Maximum Data Rate |
14.4Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
8-bit ISA |
|
Fax Class |
Class I & II |
|
Data Modulation Protocol |
Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis |
|
Fax Modulation Protocol |
ITU-T V.17, V.27ter, V.29 |
|
Error Correction/Compression |
MNP5, V.42, V.42bis |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Line out |
CN1 |
Line in |
CN2 |
|
BASE I/O ADDRESS SELECTION | ||
|
Address |
SW1/1 |
SW1/2 |
|
COM1: (3F8h) |
On |
On |
|
COM2: (2F8h) |
On |
Off |
|
COM3: (3E8h) |
Off |
On |
|
COM4: (2E8h) |
Off |
Off |
|
INTERRUPT SELECTION | |||
| IRQ |
JP1 pins 1 & 2 |
JP1 pins 3 & 4 |
JP1 pins 5 & 6 |
| » 3/4 |
Closed |
Open |
Open |
| 2 |
Open |
Closed |
Open |
| 5 |
Open |
Open |
Closed |
Proprietary AT Command Set
|
EXTENDED RING | |||
|
Format: |
AT [cmds] S101=n [cmds] | ||
|
Example: |
ATS101=40<CR> | ||
|
Default: |
0 | ||
|
Range: |
0 - 255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Selects the response to extended ring types. | ||
|
Bit |
Value |
Function | |
|
0 | » 0 1 |
Do not respond to ring type A. Respond to ring type A. | |
|
1 | » 0 1 |
Do not respond to ring type B. Respond to ring type B. | |
|
2 | » 0 1 |
Do not respond to ring type C. Respond to ring type C. | |
|
3 | » 0 1 |
Do not respond to ring type D. Respond to ring type D. | |
|
4 | » 0 1 |
Do not respond to ring type E. Respond to ring type E. | |
|
5 | » 0 1 |
Do not respond to ring type F. Respond to ring type F. | |
|
6 | » 0 1 |
Do not respond to ring type G. Respond to ring type G. | |
|
7 | » 0 1 |
Report RING for all ring types. Report RING n where n is the ring type. | |
|
HELP SCREENS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] $H |
|
Example: |
AT $H <CR> |
|
Description: |
Shows modem help screens. |
|
LAP-M PACKET SIZE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] S136=n [cmds] |
|
Example: |
AT S136=2 %C1 <CR> |
|
Description: |
Sets the frame size for an LAP-M connection. |
| Command |
Function |
| S136=0 |
Select 128 byte frame size. |
| » S136=1 |
Select 256 byte frame size. |
| S136=2 |
Select 512 byte frame size. |
|
REDIAL | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] DL |
|
Example: |
AT M1 DL <CR> |
|
Description: |
Redials the last number dialed. |
|
V.22 PROBE REJECT TIME | |
|
Type: |
Register |
|
Format: |
AT [cmds] S97=n [cmds] |
|
Example: |
ATS97=15 <CR> |
|
Default: |
30 |
|
Range: |
15-70 |
|
Unit: |
.1 second |
|
Description: |
Sets the time for which the modem will reject the V.22/V.22bis probe signal when in V.32 mode. |
