COMPUTER PERIPHERALS, INC.
VIVA 24M
|
Modem Type |
Data (synchronous/asynchronous) |
|
Maximum Data Rate |
2400bps |
|
Data Bus |
External |
|
Data Modulation Protocol |
Bell 103A/212A ITU-T V.21, V.22, V.22bis |
|
Error Correction/Compression |
MNP5 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Line out |
CN1 |
DC power |
CN4 |
|
Line in |
CN2 |
Power switch |
SW1 |
|
RS-232/422 |
CN3 | ||
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
HS |
Red |
On |
Modem is operating at 2400bps |
|
HS |
Red |
Off |
Modem is operating at slower than 2400bps |
|
AA |
Red |
On |
Auto-answer enabled |
|
AA |
Red |
Off |
Auto-answer disabled |
|
AA |
Red |
Blinking |
Phone is ringing |
|
CD |
Red |
On |
Carrier signal detected |
|
CD |
Red |
Off |
Carrier signal not detected |
|
OH |
Red |
On |
Modem is off-hook |
|
OH |
Red |
Off |
Modem is on-hook |
|
RD |
Red |
On |
Modem is receiving data |
|
RD |
Red |
Off |
Modem is not receiving data |
|
SD |
Red |
On |
Modem is transmitting data |
|
SD |
Red |
Off |
Modem is not transmitting data |
|
TR |
Red |
On |
DTR signal is high |
|
TR |
Red |
Off |
DTR signal is low |
|
MR |
Red |
Blinking |
Loopback tests enabled |
|
MR |
Red |
On |
Power is on |
|
MR |
Red |
Off |
Power is off |
|
Note: The LEDs are Icons. | |||
Proprietary AT Command Set
|
ACCEPT RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \U |
|
Example: |
AT \U <CR> |
|
Description: |
Accepts remote modems request for reliable link. |
|
AUTO-RELIABLE FALLBACK CHARACTER | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %An [cmds] |
|
Example: |
AT %A0 <CR> |
|
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] |
|
Example: |
AT \C0 &W <CR> |
|
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. |
|
BREAK SEND | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Bn [cmds] |
|
Example: |
AT \B3 <CR> |
|
Default: |
3 |
|
Range: |
1-9 |
|
Unit: |
.1 second |
|
Description: |
Sends break to modem. |
|
BREAK TYPE | |||||
|
Type: |
Configuration | ||||
|
Format: |
AT [cmds] \Kn [cmds] | ||||
|
Example: |
AT \K5 <CR> | ||||
|
Description: |
Configures action of break signal. | ||||
|
Command |
Break from DTE Reliable/Normal mode |
Break from DTE Direct mode |
Break from remote modem |
Modem receives \B | |
| \K0 |
Enter command mode, do not send break to remote modem. |
Send break to remote modem immediately, then enter command mode. |
Buffers cleared and break sent to DTE. |
Buffers cleared and break sent to remote modem. | |
| \K1 |
Buffers cleared and break sent to remote modem. |
Send break to remote modem immediately. |
Buffers cleared and break sent to DTE. |
Buffers cleared and break sent to remote modem. | |
| \K2 |
Enter command mode, do not send break to remote modem. |
Send break to remote modem immediately, then enter command mode. |
Send break to DTE immediately. |
Send break to remote modem immediately. | |
| \K3 |
Send break to remote modem immediately. |
Send break to remote modem immediately. |
Send break to DTE immediately. |
Send break to remote modem immediately. | |
| \K4 |
Enter command mode, do not send break to remote modem. |
Send break to remote modem immediately, then enter command mode. |
Break sent with received data to the DTE. |
Send break to remote modem with transmitted data. | |
| \K5 |
Send break with transmitted data. |
Send break to remote modem immediately. |
Break sent with received data to the DTE. |
Send break to remote modem with transmitted data. | |
|
COMPRESSION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Cn [cmds] |
|
Example: |
AT %C1 <CR> |
|
Description: |
Selects data compression. |
|
Command |
Function |
| %C0 |
Data compression disabled. |
| %C1 |
Data compression enabled. |
|
CONNECT MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Nn [cmds] |
|
Example: |
AT \N1 <CR> |
|
Description: |
Sets connect mode. |
| Command |
Function |
| \N0 |
Normal mode enabled. |
| \N1 |
Direct mode enabled. |
| \N2 |
Reliable mode enabled. |
| \N3 |
Auto-reliable mode enabled. |
|
CONVERT TO RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \Y |
|
Example: |
AT \Y <CR> |
|
Description: |
Initiates reliable mode link. |
|
DISPLAY CURRENT COMMAND STATUS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \S [cmds] |
|
Example: |
AT \S <CR> |
|
Description: |
Displays current setting of modem commands. |
|
ECHO DATA | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \En [cmds] |
|
\Example: |
AT \E0 <CR> |
|
Description: |
Enables modem to echo received data. |
|
Command |
Function |
| \E0 |
Data echo disabled. |
|
\E1 |
Data echo enabled. |
|
FLOW CONTROL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Gn [cmds] |
|
Example: |
AT \G0 <CR> |
|
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] |
|
Example: |
AT \Q0 <CR> |
|
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] |
|
Example: |
AT\T0 <CR> |
|
Default: |
0 |
|
Range: |
0-90 |
|
Unit: |
1 minute |
|
Description: |
Sets the length of time that the modem does not receive information before it disconnects. |
|
Note: \T0 will disable inactivity timer. | |
|
LOCK SERIAL PORT | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Jn [cmds] |
|
Example: |
AT \J1 <CR> |
|
Description: |
Sets operation of serial port speed. |
| Command |
Function |
|
\J0 |
Serial speed locked. |
| \J1 |
Serial speed follows connect speed. |
|
MAXIMUM BLOCK SIZE FOR TRANSMISSION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \An [cmds] |
|
Example: |
AT \A3 %C1 <CR> |
|
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 RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Vn [cmds] |
|
Example: |
AT \V1 <CR> |
|
Description: |
Selects MNP result codes. |
| Command |
Function |
| \V0 |
MNP result codes disabled. |
| \V1 |
MNP result codes enabled. |
|
MNP STREAM/BLOCK MODE | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Ln [cmds] |
|
Example: |
AT \L0 <CR> |
|
Description: |
Selects the transfer mode for MNP. |
|
Command |
Function |
| \L0 |
Stream mode for MNP enabled. |
|
\L1 |
Block mode for MNP enabled. |
|
ON-LINE IN RELIABLE MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \O |
|
Example: |
AT \O <CR> |
|
Description: |
Returns to on-line and requests reliable mode connection. |
|
SWITCH TO MNP MODE | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] \Z |
|
Example: |
AT \Z <CR> |
|
Description: |
Switches to normal mode from MNP mode. |
|
XON/XOFF PASS-THROUGH | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] \Xn [cmds] |
|
Example: |
AT \X0 <CR> |
|
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. |