COMPUTER PERIPHERALS, INC.
VIVA 28.8 EXTERNAL DATA/FAX
|
Modem Type |
Data (synchronous/asynchronous)/Fax |
|
Maximum Data Rate |
28.8Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
External |
|
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, MNP10, V.42, V.42bis |
|
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 |
On |
Power is on |
|
MR |
Red |
Off |
Power is off |
|
Note: The LEDs are Icons | |||
Proprietary AT Command Set
|
AUTO FALL FORWARD/FALLBACK | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %Gn [cmds] |
|
Description: |
Selects auto fallback |
| Command |
Function |
| » %G0 |
Fallback disabled |
| %G1 |
Fallback enabled |
|
AUTO-RETRAIN - FALLBACK/FALLFORWARD | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] %En [cmds] |
|
Description: |
Controls auto-retrain mode and fallback/fall forward |
|
Command |
Function |
|
%E0 |
Auto-retrain disabled |
|
%E1 |
Auto-retrain enabled |
|
%E2 |
Fallback/fall forward enabled |
|
%E3 |
Auto-retrain enabled, modem hangs up when line quality deteriorates. |
|
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 |
00 01 10 11 |
On volume Low level 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 | |
|
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 |
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 |
0 |
Not used | |
|
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 |
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 | |
|
BIT-MAPPED REGISTER S28 | |||
|
Format |
AT [cmds] S28=n [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays V.23 split baud mode, V.23 speed/direction, pulse dialing, and MNP10 link negoiation. | ||
|
Bit |
Value |
Function | |
|
0 |
0 1 |
V.23 split baud mode disabled V.23 split baud mode enabled | |
|
1 |
0 1 |
Select 75bps transmit, 1200bps receive Select 1200bps transmit, 75bps receive | |
|
2 |
0 |
Not used | |
|
4, 3 |
00 01 10 11 |
39ms make/61ms break at 10pps 33ms make/67ms break at 10pps 39ms make/61ms break at 20pps 33ms make/67ms break at 20pps | |
|
5 |
0 |
Not used | |
|
7, 6 |
00 01 10 |
Link will be negotiated at highest possible speed Link will be negotiated at 1200bps Link will be negotiated at 4800bps | |
|
BIT-MAPPED REGISTER S31 | |||
|
Format |
AT [cmds] S31=n [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays auto-baud function and result codes. | ||
|
Bit |
Value |
Function | |
|
0 |
0 |
Not used | |
|
1 |
0 1 |
Auto-baud disabled Auto-baud enabled | |
|
3, 2 |
00 01 10 |
DTE speed displayed in result codes Extended result codes enabled; DCE speed displayed in result codes. DCE speed displayed in result codes | |
|
BIT-MAPPED REGISTER S40 | |||
|
Format |
AT [cmds] S40=n [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays MNP10 services, break control, and MNP block size. | ||
|
Bit |
Value |
Function | |
|
1, 0 |
00 01 10 |
MNP10 disabled MNP10 enabled MNP10 enabled on originate mode only | |
|
0 |
0 1 |
MNP10 disabled MNP10 enabled | |
|
1 |
0 1 |
MNP10 at 2400 and 1200bps disabled MNP10 at 2400 and 1200bps enabled | |
|
2 |
0 1 |
Power level adjustment disabled Power level adjustment enabled | |
|
5 - 3 |
000 001 010 100 101 110 |
\K0 \K1 \K2 \K3 \K4 \K5 | |
|
7, 6 |
00 01 10 11 |
MNP block size is 64 characters MNP block size is 128 characters MNP block size is 192 characters MNP block size is 256 characters | |
|
BIT-MAPPED REGISTER S41 | |||
|
Format |
AT [cmds] S41=n [cmds] | ||
|
Default: |
Read-only | ||
|
Range: |
0-255 | ||
|
Unit: |
Bit-mapped | ||
|
Description: |
Displays compression, auto-retrain, flow control, stream/block mode and MNP10 fallback. | ||
|
Bit |
Value |
Function | |
|
1, 0 |
00 01 10 11 |
Data compression disabled MNP5 enabled V.42bis enabled MNP5 and V.42bis enabled | |
|
6, 2 |
00 01 10 |
Auto-retrain disabled Auto-retrain enabled %E2 | |
|
3 |
0 1 |
Flow control disabled Flow control enabled | |
|
4 |
0 1 |
Stream mode for MNP Block mode for MNP | |
|
7 |
0 1 |
MNP10 at 2400 and 1200bps disabled MNP10 at 2400 and 1200bps enabled | |
|
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 | |
|
CELLULAR TRANSMISSION LEVEL | |
|
Type: |
Register |
|
Format: |
AT [cmds] S201=n [cmds] |
|
Default: |
10 |
|
Range: |
0-15 |
|
Unit: |
-1 dBm |
|
Description: |
Controls cellular transmission level |
|
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 |
Both MNP5 AND V.42bis enabled |
|
COMPROMISE EQUALIZER | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] :En [cmds] |
|
Description: |
Controls V.32 compromise equalizer |
| Command |
Function |
| :E0 |
Equalizer disabled |
| » :E1 |
Equalizer 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 |
|
FAX TRANSMISSION LEVEL | |
|
Type: |
Register |
|
Format: |
AT [cmds] S92=n [cmds] |
|
Default: |
10 |
|
Range: |
0-15 |
|
Unit: |
-1 dBm |
|
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 - XON | |
|
Type: |
Register |
|
Format: |
AT [cmds] S32=n [cmds] |
|
Default: |
17 |
|
Range: |
0-255 |
|
Unit: |
ASCII |
|
Description: |
Sets the character used to represent XON |
|
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 |
|
LEASED LINE TRANSMISSION LEVEL | |
|
Type: |
Register |
|
Format: |
AT [cmds] S99=n [cmds] |
|
Default: |
10 |
|
Range: |
0-15 |
|
Unit: |
-1 dBm |
|
Description: |
Controls leased-line transmission level |
|
LINE SIGNAL LEVEL | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] %L [cmds] |
|
Range: |
9-43 |
|
Unit: |
-1dBm |
|
Description: |
Returns received line signal level |
|
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 |
|
MNP10 COMPRESSION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] -Kn [cmds] |
|
Description: |
Selects MNP10 data compression |
| Command |
Function |
|
-K0 |
MNP10 disabled |
| » -K1 |
MNP10 enabled |
|
-K2 |
MNP10 enabled on originate mode only |
|
MNP10 FALL-BACK | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] -Qn [cmds] |
|
Description: |
Allows MNP10 to fall back to speeds slower than 4800bps |
| Command |
Function |
|
-Q0 |
MNP10 at 2400 and 1200bps disabled |
| » -Q1 |
MNP10 at 2400 and 1200bps enabled |
|
MNP10 LINK NEGOTIATION | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] *Hn [cmds] |
|
Description: |
Sets the speed at which MNP10 link negotiation will occur |
| Command |
Function |
| » *H0 |
Link will be negotiated at highest possible speed |
| *H1 |
Link will be negotiated at 1200bps |
|
MNP10 POWER LEVEL ADJUST | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] )Mn [cmds] |
|
Description: |
Controls automatic transmit power level adjustment during MNP 10 link negotiation |
| Command |
Function |
| » )M0 |
Power level adjustment disabled |
| )M1 |
Power level adjustment enabled |
|
REMOTE ACCESS ESCAPE CHARACTER | |
|
Type: |
Register |
|
Format: |
AT [cmds] S202=n [cmds] |
|
Default: |
Unidentified |
|
Range: |
0-255 |
|
Unit: |
ASCII |
|
Description: |
Sets the remote access escape character |
|
REPORT LINE SIGNAL QUALITY | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] %Q [cmds] |
|
Description: |
Returns line signal quality |
|
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 |
|
SWITCHED TRANSMISSION LEVEL | |
|
Type: |
Register |
|
Format: |
AT [cmds] S91=n [cmds] |
|
Default: |
10 |
|
Range: |
0-15 |
|
Unit: |
-1 dBm |
|
Description: |
Controls switched transmission level |
|
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 | |
|
TRANSMISSION LEVEL | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] @Mn [cmds] |
|
Default: |
Unidentified |
|
Range: |
11-31 |
|
Unit: |
-1 dBm |
|
Description: |
Sets initial transmit power level for transmission |
|
í Command |
Function |
|
@M0 |
-26dBm |
|
@M1 |
-30dBm |
|
@M2-@M10 |
-10dBm |
