COMPUTER PERIPHERALS, INC.
VIVA 28.8 INTERNAL DATA/FAX
|
Modem Type |
Data (asynchronous)/Fax |
|
Maximum Data Rate |
28.8Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
8-bit ISA |
|
Fax Class |
Class I |
|
Data Modulation Protocol |
Bell 103A/212A ITU-T V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC |
|
Fax Modulation Protocol |
ITU-T V.17, V.21CH2, 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 |
|
COM1: (3F8h) |
On |
On |
|
COM2: (2F8h) |
Off |
On |
|
COM3: (3E8h) |
On |
Off |
|
COM4: (2E8h) |
Off |
Off |
|
INTERRUPT SELECTION | ||||||
|
IRQ |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 |
SW1/8 |
|
3 |
On |
Off |
Off |
Off |
Off |
Off |
|
4 |
Off |
On |
Off |
Off |
Off |
Off |
|
5 |
Off |
Off |
On |
Off |
Off |
Off |
|
7 |
Off |
Off |
Off |
Off |
On |
Off |
Proprietary AT Command Set
|
ACCEPT AUTO-RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \U [cmds] |
|
Description: |
Accepts remote modems request for reliable link |
|
AUTO FALL FORWARD/FALLBACK | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Gn [cmds] |
|
Description: |
Selects auto fallback |
| Command |
Function |
| %G0 |
Fallback disabled |
| %G1 |
Fallback enabled |
|
AUTO-RELIABLE FALLBACK CHARACTER | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %An [cmds] |
|
Default: |
Unidentified |
|
Range: |
0-127 |
|
Unit: |
ASCII |
|
Description: |
Sets the character used as the auto-reliable fallback character. %A0 will disable this function. |
|
AUTO-RELIABLE TIME BUFFER CONFIGURATION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Cn [cmds] |
|
Description: |
Controls the handling of incoming data during auto-reliable time period |
|
Command |
Function |
| \CO |
Data is discarded |
|
\C1 |
Data is buffered |
|
\C2 |
Data is discarded, sets to normal mode and sends auto-reliable character to serial port. |
|
AUTO-RETRAIN | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %En [cmds] |
|
Description: |
Selects auto-retrain mode |
| Command |
Function |
| %E0 |
Auto-retrain disable. |
|
%E1 |
Auto-retrain enabled |
|
BIT-MAPPED REGISTER S14 | |||
|
Format |
AT [cmds] S14? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays echo, result codes, result code display, dial mode, and answer/originate mode. | ||
|
Bit |
Value |
Function | |
|
0 |
0 |
Not used | |
|
1 |
0 1 |
Command echo disabled Command echo enabled | |
|
2 |
0 1 |
Result codes enabled Result codes disabled | |
|
3 |
0 1 |
Display result codes in numeric format Display result codes in verbose format | |
|
4 |
0 |
Not used | |
|
5 |
0 1 |
Tone dial enabled Pulse dial enabled | |
|
6 |
0 |
Not used | |
|
7 |
0 1 |
Answer mode enabled Originate mode enabled | |
|
BIT-MAPPED REGISTER S21 | |||
|
Format |
AT [cmds] S21? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays jack type, CTS signal, low DTR action, DCD signal, DSR signal, and the long space disconnect function. | ||
|
Bit |
Value |
Function | |
|
0 |
0 1 |
Selects RJ-11, RJ-41S, or RJ45S jack Selects RJ-12 or RJ-13 jack | |
|
1 |
0 |
Not used | |
|
2 |
0 1 |
CTS follows RTS CTS forced high | |
|
4, 3 |
00 01 10 11 |
DTR signal ignored Modem goes to command mode on low DTR Modem disconnects on low DTR. Auto-Answer is disabled Modem is initialized on low DTR | |
|
5 |
0 1 |
DCD forced high DCD normal | |
|
6 |
0 1 |
DSR forced high DSR normal | |
|
7 |
0 1 |
Long space disconnect function disabled Long space disconnect function enabled | |
|
BIT-MAPPED REGISTER S22 | |||
|
Format |
AT [cmds] S22? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays speaker volume and controls, limits results codes , and make/break pulse ratio. | ||
|
Bit |
Value |
Function | |
|
1, 0 |
01 10 11 |
On volume Medium level volume High level volume | |
|
3, 2 |
00 01 10 11 |
Speaker off Speaker off on carrier Speaker always on Speaker on during handshake | |
|
6, 5, 4 |
000 100 101 110 111 |
Basic result codes only enabled Basic and connection speed result codes enabled Basic and connection speed result codes and dialtone detection enabled All result codes except dialtone detection enabled All result codes enabled | |
|
7 |
0 1 |
39/61ms at 10pps (North America) 33/67ms at 10pps (Europe) | |
|
BIT-MAPPED REGISTER S23 | |||
|
Format |
AT [cmds] S23? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays remote digital loopback, DTE rate and parity, and guard tone. | ||
|
Bit |
í Value |
Function | |
|
0 |
0 1 |
Remote digital loopback denied Remote digital loopback allowed | |
|
3, 2, 1 |
000 001 010 011 100 101 110 111 |
Sets serial port speed to 0-300bps Sets serial port speed to 600bps Sets serial port speed to 1200bps Sets serial port speed to 2400bps Sets serial port speed to 4800bps Sets serial port speed to 9600bps Sets serial port speed to 19200bps Sets serial port speed to 38400bps | |
|
5,4 |
01 |
Space Parity/No Parity | |
|
7, 6 |
00 01 10 |
Guard tone disabled Guard tone 550Hz enabled Guard tone 1800Hz enabled | |
|
BIT-MAPPED REGISTER S27 | |||
|
Format |
AT [cmds] S27? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays synchronous/asynchronous mode, Line type, clock source, and ITU-T/Bell modes. | ||
|
Bit |
í Value |
Function | |
|
3, 1, 0 |
000 001 010 011 100 |
Asynchronous mode, serial port speed follows connect speed Asynchronous command mode and synchronous connect mode Asynchronous command mode and synchronous connect mode Asynchronous command mode on low DTR, synchronous connect mode on high DTR Hayes AutoSync™ mode | |
|
2 |
0 1 |
Dial up line Leased line | |
|
5, 4 |
00 01 10 |
Internal transmit clock source External transmit clock source Remote transmit clock source | |
|
6 |
0 1 |
CCITT mode Bell mode | |
|
BREAK SEND | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Bn [cmds] |
|
Default: |
Unidentified |
|
Range: |
0-9 |
|
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 received from remote modem | |
|
\K0 |
Online command mode enabled, send no break to remote modem |
Break sent to remote modem and buffered cleared |
Buffers cleared, break sent to DTE | |
|
\K1 |
Break sent to remote modem and buffered cleared |
Break sent to remote modem and buffered cleared |
Buffers cleared, break sent to DTE | |
|
\K2 |
Online command mode enabled, send no break to remote modem |
Send break to remote modem immediately |
Break sent immediately to DTE | |
|
\K3 |
Send break to remote modem immediately |
Send break to remote modem immediately |
Break sent immediately to DTE | |
|
\K4 |
Online command mode enabled, send no break to remote modem |
Send break with transmitted data |
Break sent with received data to the DTE | |
| \K5 |
Send break with transmitted data |
Send break with transmitted data |
Break sent with received data to the DTE | |
|
CALLING TONE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] -Cn [cmds] |
|
Description: |
Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating. |
| Command |
Function |
| -C0 |
Disable calling tone |
| -C1 |
Enable calling tone |
|
COMPRESSION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Cn [cmds] |
|
Description: |
Selects data compression |
| Command |
Function |
|
%C0 |
Data compression disabled |
| %C1 |
Data compression 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 |
LAPM mode enabled |
|
\N5 |
MNP mode enabled |
|
CONVERT TO RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \Y [cmds] |
|
Description: |
Initiates reliable mode link |
|
EXTENDED RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Vn [cmds] |
|
Description: |
Selects extended result codes |
|
Command |
Function |
|
\V0 |
Extended result codes disabled |
|
\V1 |
MNP extended result codes enabled |
|
\V2 |
V.42 extended result codes enabled |
|
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 TYPE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Qn [cmds] |
|
Description: |
Sets type of flow control used by modem |
| Command |
Function |
| \Q0 |
Flow control disabled |
| \Q1 |
XON/XOFF flow control enabled |
| \Q2 |
CTS flow control to DTE enabled |
| \Q3 |
RTS/CTS flow control enabled |
|
INACTIVITY TIMER | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Tn [cmds] |
|
Default: |
0 |
|
Range: |
0-90 |
|
Unit: |
1 minute |
|
Description: |
Sets the length of time that the modem does not receive information before it disconnects. |
|
INACTIVITY TIMER | |
|
Type: |
Register |
|
Format: |
AT [cmds] S90=n [cmds] |
|
Default: |
0 |
|
Range: |
0-255 |
|
Unit: |
1 minute |
|
Description: |
Sets the length of time that the modem does not receive information before it disconnects. S90=0 will disable. |
|
LINE SIGNAL QUALITY | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Qn [cmds] |
|
Default: |
Unidentified |
|
Range: |
0-255 |
|
Description: |
Sets the line quality at which the modem will retrain. If the line quality drops below n, the modem will retrain. |
|
LOCK SERIAL PORT | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Jn [cmds] |
|
Description: |
Sets operation of serial port speed |
| Command |
Function |
| \J0 |
Serial speed locked |
| \J1 |
Serial speed follows connect speed |
|
MODULATION SELECTION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] +MS=xx,y,zzz,aaa [cmds] |
|
Example: |
AT+MS10,0,4800,26400 <CR> |
|
Description: |
Sets options for active protocol. The transfer rates specified by z and a must be valid for the protocol selected. |
|
Command |
Function |
|
x=0 |
V.21 |
|
x=1 |
V.22 |
|
x=2 |
V.22bis |
|
x=3 |
V.23 1200/75 |
|
x=8 |
V.32 |
|
x=9 |
V.32bis |
| x=10 |
V.34 |
|
x=13 |
V.23 75/1200 |
|
x=64 |
Bell 103A |
|
x=69 |
Bell 212A |
|
x=74 |
V.FC |
|
y =0 |
Automode disabled |
|
y =1 |
Auto-detect highest speed enabled without V.8 (except for V.34) |
| y=2 |
Auto-detect highest speed enabled with V.8 |
|
z, a =300 |
Set minimum or maximum transfer rate at 300bps, respectively. |
|
z, a =1200 |
Set minimum or maximum transfer rate at 1200bps, respectively. |
|
z, a =2400 |
Set minimum or maximum transfer rate at 2400bps, respectively. |
|
z, a =4800 |
Set minimum or maximum transfer rate at 4800bps, respectively. |
|
z, a =9600 |
Set minimum or maximum transfer rate at 9600bps, respectively. |
|
z, a =12000 |
Set minimum or maximum transfer rate at 12000bps, respectively. |
|
z, a =14400 |
Set minimum or maximum transfer rate at 14400bps, respectively. |
|
z, a =16800 |
Set minimum or maximum transfer rate at 16800bps, respectively. |
|
z, a =19200 |
Set minimum or maximum transfer rate at 19200bps, respectively. |
|
z, a =21600 |
Set minimum or maximum transfer rate at 21600bps, respectively. |
|
z, a =24000 |
Set minimum or maximum transfer rate at 24000bps, respectively. |
|
z, a =26400 |
Set minimum or maximum transfer rate at 26400bps, respectively. |
|
z, a =28800 |
Set minimum or maximum transfer rate at 28800bps, respectively. |
|
MODULATION SELECTION DISPLAY | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] +MS? [cmds] |
|
Description: |
Displays modulation, automode, minimum rate and maximum rate settings |
|
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 |
|
ON-LINE IN RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \O [cmds] |
|
Description: |
Returns to on-line and requests reliable mode connection |
|
SWITCH TO NORMAL MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \Z [cmds] |
|
Description: |
Switches to normal mode from MNP mode |
|
TEST MODES | |||
|
Format |
AT [cmds] S16? [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays loopback tests, analog, digital, remote digital, and self tests. | ||
|
Bit |
Value |
Function | |
|
0 |
0 1 |
Local analog loopback not in progress Local analog loopback in progress | |
|
1 |
0 |
Not used | |
|
2 |
0 1 |
Local digital loopback not in progress Local digital loopback in progress | |
|
3 |
0 1 |
Modem not in remote digital loopback Remote digital loopback in progress | |
|
4 |
0 1 |
Remote digital loopback not requested Remote digital loopback requested | |
|
5 |
0 1 |
Remote digital loopback w/ self-test not in progress Remote digital loopback w/ self-test in progress | |
|
6 |
0 1 |
Local analog loopback w/ self-test not in progress Local analog loopback w/ self-test in progress | |
|
V.42bis COMPRESSION CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] "Hn [cmds] |
|
Description: |
Controls V.42bis data compression |
| Command |
Function |
| "H0 |
V.42bis disabled |
| "H1 |
V.42bis when transmitting enabled |
| "H2 |
V.42bis when receiving enabled |
| "H3 |
V.42bis when transmitting/receiving enabled |
|
V.42 DETECTION PHASE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] -Jn [cmds] |
|
Description: |
Controls V.42 detection |
| Command |
Function |
| -J0 |
V.42 detection disabled |
| -J1 |
V.42 detection enabled |
|
V.42bis MAXIMUM STRING LENGTH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] "O=n [cmds] |
|
Default: |
16 |
|
Range: |
6-250 |
|
Unit: |
1 ASCII character |
|
Description: |
Selects string size for V.42bis compression |
|
XON/XOFF PASS-THROUGH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Xn [cmds] |
|
Description: |
Selects whether XON/XOFF signals are sent to remote modem |
|
Command |
Function |
|
\X0 |
XON/XOFF signals trapped by local modem |
|
\X1 |
XON/XOFF passed through local modem |