PC144HC modem/telephone/ISDN Settings and Configuration
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. |
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