V.34 X
Modem Type | Data (synchronous/asynchronous)/Fax |
Maximum Data Rate | 28.8Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Bus | External |
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, 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 | DC power | CN4 |
Line in | CN2 | Power switch | SW1 |
RS-232/422 | CN3 |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
MSG | Red | On | Stored faxes exist |
MSG | Red | Off | No faxes stored |
FX | Red | On | Modem is connected in FAX mode |
FX | Red | Off | Modem is not connected in FAX mode |
V.34 | Red | On | Modem is in V.34 mode. |
V.34 | Red | Off | Modem is not in V.34 mode. |
V.FC | Red | On | Modem is in V.FC mode. |
V.FC | Red | Off | Modem is not in V.FC mode. |
14.4 | Red | On | Modem connected at 14.4Kbps |
14.4 | Red | Off | Modem not connected at 14.4Kbps |
DC | Red | On | Error correction enabled |
DC | Red | Off | Error correction disabled |
EC | Red | On | Error correction enabled |
EC | Red | Off | Error correction disabled |
FC | Red | On | Flow control enabled |
FC | Red | Off | Flow control disabled |
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 |
TD | Red | On | Modem is transmitting data |
TD | 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 |
Proprietary AT Command Set
AUTO-RETRAIN | |
Type: | Configuration |
Format: | AT %En |
Example: | AT %E1 <CR> |
Description: | Selects auto-retrain mode. |
Command | Function |
%E0 | Auto-retrain disabled. |
%E1 | Auto-retrain enabled. |
» %E2 | Fallback/fall forward enabled. |
%E3 | Fallback/fall forward and fast hang-up enabled. |
COMPRESSION | |
Type: | Configuration |
Format: | AT %Cn |
Example: | AT *EC0 %C1 *AP0 <CR> |
Description: | Selects data compression. |
Command | Function |
%C0 | Data compression disabled. |
%C1 | MNP5 enabled. |
%C2 | V.42bis enabled. |
» %C3 | MNP5 and V.42bis enabled. |
BREAK SEND | |
Type: | Configuration |
Format: | AT [cmds] \Bn [cmds] |
Example: | AT \B3 &W <CR> |
Default: | 3 |
Range: | 1-9 |
Unit: | .1 second |
Description: | Sends break to modem. |
FLOW CONTROL TYPE | |
Type: | Configuration |
Format: | AT [cmds] \Kn [cmds] |
Example: | AT \K1 <CR> |
Description: | Configures action of break signal. |
Command | Function |
\K0 | Flow control disabled. |
» \K3 | RTS/CTS flow control enabled. |
\K4 | XON/XOFF flow control enabled. |
CONNECT MODE | |
Type: | Configuration |
Format: | AT [cmds] \Nn [cmds] |
Example: | AT \N1 DT555-1212 <CR> |
Description: | Sets connect mode. |
Command | Function |
\N0 | Normal mode enabled. |
\N1 | Direct mode enabled. |
\N2 | Error correction mode enabled. |
» \N3 | MNP mode with fallback to normal mode enabled. |
\N4 | LAPM mode only enabled. |
\N5 | MNP mode only enabled. |
CELLULAR TRANSMISSION LEVEL | |
Type: | Configuration |
Format: | AT [cmds] @Mn [cmds] |
Example: | AT @M26 &W <CR> |
Default: | 26 |
Range: | 10 - 31 |
Unit: | -1 dBm |
Description: | Sets the signal level for transmission when in leased line mode. |
COMPROMISE EQUALIZER | |
Type: | Configuration |
Format: | AT [cmds] :En [cmds] |
Example: | AT :E &W <CR> |
Description: | Controls V.32 compromise equalizer. |
Command | Function |
:E0 | Equalizer disabled. |
» :E1 | Equalizer enabled. |
CONNECTION FAILURE CODES | |
Format | AT [cmds] S86? [cmds] |
Example: | ATS86? <CR> |
Default: | Read-only |
Range: | 0, 4 - 14 |
Unit: | None |
Stored: | N/A |
Description: | Reports codes which correspond to the possible causes of a connection failure. |
Value | Meaning |
0 | No failure - normal hang-up. |
4 | Carrier signal lost. |
5 | No error-control detected for remote modem during feature negotiation. |
6 | Remote modem failed to respond to feature negotiation. |
7 | Local modem is asynchronous-only, remote modem is synchronous-only. |
8 | No common framing technique found. |
9 | No common protocol found. |
10 | Remote modem sent erroneous feature negotiation message. |
11 | Remote modem failed to send synchronous information. |
12 | No failure - remote modem disconnected normally. |
13 | Remote modem failed to respond after 10 re-transmissions same message. |
14 | Violation of negotiated protocol caused failure. |
ERROR CORRECTION REJECTION | ||
Format | AT [cmds] S36=n [cmds] | |
Example: | ATS36=0 <CR> | |
Default: | Unidentified | |
Range: | 0 - 7 | |
Unit: | Bit-mapped | |
Description: | Configures the modem’s behavior if an error-correcting connection cannot be made. | |
Command | Function | |
0 | Modem disconnects | |
3 | Modem attempts normal connection. | |
4 | Modem attempts MNP connection. | |
7 | Modem attempts MNP connection. If it fails, modem attempts normal connection. |
FLASH DIAL MODIFIER TIME | |
Format | AT [cmds] S29=n [cmds] |
Example: | ATS29=0 <CR> |
Default: | 0 |
Range: | 0-255 |
Unit: | 10 ms |
Description: | Time the modem will go on-hook upon receiving the ! dial modifier in dial string. |
FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] \Gn [cmds] |
Example: | AT G1 &K3 <CR> |
Description: | Selects modem port flow control. |
Command | Function |
» \G0 | Flow control disabled. |
\G1 | Flow control enabled. |
FLOW CONTROL DISPLAY | ||
Format | AT [cmds] S39? [cmds] | |
Example: | ATS39?<CR> | |
Default: | Read-only | |
Range: | 0, 3 - 6 | |
Unit: | None | |
Stored: | N/A | |
Description: | Contains the current flow control. | |
Value | Meaning | |
0 | Flow control is disabled. | |
» 3 | RTS/CTS flow control is enabled. | |
4 | XON/XOFF flow control is enabled. | |
5 | AFT XON/XOFF flow control is enabled. | |
6 | RTS/CTS and XON/XOFF flow control enabled. |
FLOW CONTROL CHARACTER - XOFF | |
Type: | Register |
Format: | AT [cmds] S33=n [cmds] |
Example: | ATS33=20 <CR> |
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] |
Example: | ATS32=20 <CR> |
Default: | 17 |
Range: | 0-255 |
Unit: | ASCII |
Description: | Sets the character used to represent XON. |
LEASED LINE RECEIVE LEVEL DISPLAY | |
Type: | Immediate |
Format: | AT [cmds] %L [cmds] l |
Example: | AT %L &W <CR> |
Description: | Displays signal level for reception when in leased-line mode. |
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. |
MNP10 COMPRESSION | |
Type: | Configuration |
Format: | AT [cmds] -Kn [cmds] |
Example: | AT %C1 -K1 -Q0 <CR> |
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] |
Example: | AT *H0 -Q1 <CR> |
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 POWER LEVEL ADJUST | |
Type: | Configuration |
Format: | AT [cmds] )Mn [cmds] |
Example: | AT )M1 %C1 <CR> |
Description: | Controls automatic transmit power level adjustment during MNP 10 link negotiation. |
Command | Function |
» )M0 | Power level adjustment disabled. |
)M1 | Power level adjustment enabled. |
MNP10 LINK NEGOTIATION | |
Type: | Configuration |
Format: | AT [cmds] *Hn [cmds] |
Example: | AT *H0 -Q1 <CR> |
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. |
*H2 | Link will be negotiated at 4800bps. |
MNP STREAM/BLOCK MODE | |
Type: | Configuration |
Format: | AT [cmds] \Ln [cmds] |
Example: | AT \L1 DT555-1212 <CR> |
Description: | Selects the transfer mode for MNP. |
Command | Function |
» \L0 | Stream mode for MNP enabled. |
\L1 | Block mode for MNP enabled. |
MODULATION SELECTION | |
Type: | Configuration |
Format: | AT [cmds] +MS=xx,y,zzz,aaa [cmds] |
Example: | AT +MS11,1,300,28800 &W <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 |
x =9 | V.32 |
x =10 | V.32bis |
x =11 | V.34 |
x =64 | Bell 103A |
x =69 | Bell 212A |
x =74 | V.FC |
y =1 | Auto-detect highest speed enabled. |
y =0 | Automode disabled. |
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 =7200 | Set minimum or maximum transfer rate at 7200bps, 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. |
NEGOTIATE LINE SPEED | |
Type: | Configuration |
Format: | AT [cmds] %Q [cmds] |
Example: | AT %Q &W <CR> |
Description: | Displays signal quality. |
SLEEP TIMER | |
Format | AT [cmds] S24=n [cmds] |
Example: | ATS24=40 <CR> |
Default: | 0 |
Range: | 0 - 255 |
Unit: | 1 second |
Description: | Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode. |