COMPUTER PERIPHERALS, INC.
VIVA 14.4/FAX INTERNAL
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 | ||||
Port | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
COM1: (3F8h) | On | Off | Off | Off |
COM2: (2F8h) | Off | On | Off | Off |
COM3: (3E8h) | Off | Off | On | Off |
| » COM4: (2E8h) | Off | Off | Off | On |
INTERRUPT SELECTION | ||||
IRQ | JP1/A | JP1/B | JP1/C | JP1/D |
2 | Open | Open | Open | Closed |
| » 3 | Closed | Open | Open | Open |
4 | Open | Closed | Open | Open |
5 | Open | Open | Closed | Open |
Proprietary AT Command Set
AUTO-RETRAIN | |
Type: | Configuration |
Format: | AT [cmds] %En [cmds] |
Description: | Selects auto-retrain mode |
| Command | Function |
| » %E0 | Auto-retrain disabled |
%E1 | Auto-retrain enabled |
BIT-MAPPED REGISTERS | |
Register | Default |
S14 | 138 |
S16 | 0 |
S21 | 4 |
S22 | 117 |
S23 | 183 |
S27 | 9 |
S28 | 0 |
S31 | 2 |
S40 | 105 |
S41 | 195 |
S80 | Unidentified |
BREAK SEND | |
Type: | Configuration |
Format: | AT [cmds] \Bn [cmds] |
Default: | Unidentified |
Range: | Unidentified |
Unit: | .1 second |
Description: | Sends break to modem |
BREAK TYPE | ||||
Type: | Configuration | |||
Format: | AT [cmds] \Kn [cmds] | |||
Description: | Configures action of break signal | |||
Command | Break from DTE | Modem receives \B | Break from remote modem | |
| \K0 | Enter command mode, do not send break to remote modem | Buffers cleared and break sent to remote modem | Buffers cleared and break sent to DTE | |
| \K1 | Buffers cleared and break sent to remote modem | Buffers cleared and break sent to remote modem | Buffers cleared and break sent to DTE | |
| \K2 | Enter command mode, do not send break to remote modem | Send break to remote modem immediately | Send break to DTE immediately | |
| \K3 | Send break to remote modem immediately | Send break to remote modem immediately | Send break to DTE immediately | |
| \K4 | Enter command mode, do not send break to remote modem | Send break to remote modem with transmitted data | Break sent with received data to the DTE | |
| » \K5 | Send break with transmitted data | Send break to remote modem with transmitted data | Break sent with received data to the DTE | |
COMPRESSION | |
Type: | Configuration |
Format: | AT [cmds] %Cn [cmds] |
Description: | Selects data compression |
| Command | Function |
| %C0 | Data compression disabled |
| %C1 | MNP5 enabled |
| %C2 | V.42bis enabled |
| » %C3 | MNP5 and V.42bis enabled |
CONNECT MODE | |
Type: | Configuration |
Format: | AT [cmds] \Nn [cmds] |
Description: | Sets connect mode |
Command | Function |
\N0 | Normal mode enabled |
\N1 | Direct mode enabled |
\N2 | Reliable mode enabled |
| » \N3 | Auto-reliable mode enabled |
\N4 | LAP-M mode only enabled |
\N5 | MNP mode only enabled |
DISPLAY CURRENT COMMAND STATUS | |
Type: | Immediate |
Format: | AT [cmds] \S [cmds] |
Description: | Displays current setting of modem commands |
DISPLAY STORED NUMBERS | |
Type: | Immediate |
Format: | AT [cmds] \F [cmds] |
Description: | Displays all stored phone numbers |
FAX TRANSMIT LEVEL | |
Type: | Register |
Format: | AT [cmds] S92=n [cmds] |
Default: | 10 |
Range: | 0-15 |
Unit: | -1dBm |
Description: | Controls fax transmission level |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] \Gn [cmds] |
Description: | Selects modem port flow control |
Command | Function |
| » \G0 | Flow control disabled |
\G1 | Flow control enabled |
FLOW CONTROL CHARACTER - XOFF | |
Type: | Register |
Format: | AT [cmds] S33=n [cmds] |
Default: | 19 |
Range: | 0-255 |
Unit: | ASCII |
Description: | Sets the character used to represent XOFF |
FLOW CONTROL CHARACTER - XON | |
Type: | Register |
Format: | AT [cmds] S32=n [cmds] |
Default: | 17 |
Range: | 0-255 |
Unit: | ASCII |
Description: | Sets the character used to represent XON |
LEASED LINE TRANSMISSION LEVEL | |
Type: | Register |
Format: | AT [cmds] S99=n [cmds] |
Default: | 10 |
Range: | 0-15 |
Unit: | -1 dBm |
Description: | Sets the signal level for transmission when in leased-line mode |
LINE SIGNAL LEVEL | |
Type: | Immediate |
Format: | AT [cmds] %L [cmds] |
Description: | Returns received line signal level |
LINE TYPE | |
Type: | Configuration |
Format: | AT [cmds] %Mn [cmds] |
Description: | Selects AUXCTL output |
Command | Function |
%M0 | AUXCTL output low enabled |
%M1 | AUXCTL output high enabled |
MAXIMUM BLOCK SIZE FOR TRANSMISSION | |
Type: | Configuration |
Format: | AT [cmds] \An [cmds] |
Description: | Sets the maximum transmittable block size |
| Command | Function |
| \A0 | MNP block size is 64 characters |
| \A1 | MNP block size is 128 characters |
| \A2 | MNP block size is 192 characters |
| » \A3 | MNP block size is 256 characters |
MNP STREAM/BLOCK MODE | |
Type: | Configuration |
Format: | AT [cmds] \Ln [cmds] |
Description: | Selects the transfer mode for MNP |
Command | Function |
| » \L0 | Stream mode for MNP enabled |
\L1 | Block mode for MNP enabled |
PSTN TRANSMIT LEVEL | |
Type: | Register |
Format: | AT [cmds] S91=n [cmds] |
Default: | 10 |
Range: | 0-15 |
Unit: | -1dBm |
Description: | Controls PSTN transmission level |
REPORT LINE SIGNAL QUALITY | |
Type: | Immediate |
Format: | AT [cmds] %Q [cmds] |
Description: | Reports line signal quality. If the value is greater than 7, the modem will retrain. |
SLEEP TIMER | |
Type: | Register |
Format | AT [cmds] S24=n [cmds] |
Default: | 0 |
Range: | 0-255 |
Unit: | 1 second |
Description: | Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode |
TEST MODE - PTT | |
Type: | Immediate |
Format: | AT [cmds] %T [cmds] |
Description: | Send PTT test signals for European line test |
V.23 SPLIT BAUD MODE | |
Type: | Configuration |
Format: | AT [cmds] \Wn [cmds] |
Description: | Controls V.23 split baud mode |
Command | Function |
\W0 | V.23 split baud mode disabled |
\W1 | V.23 split baud mode enabled |
V.23 SPEED DIRECTION | |
Type: | Configuration |
Format: | AT [cmds] %Fn [cmds] |
Description: | Selects V.23 speed and direction |
| Command | Function |
%F1 | 1200bps receive/75bps transmit enabled |
%F2 | 1200bps transmit/75bps receive enabled |