DIGICOM SPA
SNM50
Card Type |
Modem |
Chip Set |
Unidentified |
I/O Options |
Power, leased line, switched line, 25-pin serial port |
Maximum Modem Rate |
33.6Kbps |
Maximum Fax Rate |
14.4Kbps |
Data Modulation Protocol |
ITU-T V.21, V.22, V.22bis,V.23, V.32, V.32bis, V.34, V.34+ |
Fax Modulation Protocol |
V.17, V.29, V.27 |
Error Correction/Compression |
MNP5, V.42, V.42bis |
Fax Class |
Class I |
Data Bus |
External |
CONNECTIONS | ||||||
Function |
Label |
Function |
Label | |||
Power |
CN1 |
Switched line (RJ-11 connector) |
CN4 | |||
25-pin serial port |
CN2 |
Power switch |
SW1 | |||
Leased line (RJ-11 connector) |
CN3 |
DIAGNOSTIC LED(S) | |||
LED |
Color |
Status |
Condition |
PWR |
Green |
On |
Power is on |
PWR |
Green |
Off |
Power is off |
DSR |
Red |
On |
Modem is ready |
DSR |
Red |
Off |
Modem is not ready |
DTR |
Red |
On |
Computer is ready |
DTR |
Red |
Off |
Computer is not ready |
TD |
Red |
On |
Modem is transmitting data |
TD |
Red |
Off |
Modem is not transmitting data |
CTS |
Red |
On |
CTS signal is high. TA ready to send data |
CTS |
Red |
Off |
CTS signal is low |
RD |
Red |
On |
Modem is receiving data |
RD |
Red |
Off |
Modem is not receiving data |
DCD |
Red |
On |
Data carrier present |
DCD |
Red |
Off |
Data carrier not present. Connection not established |
TST |
Red |
On |
Unit is conducting a test |
TST |
Red |
Off |
Unit not conducting a test |
LNE |
Red |
On |
Modem is off-hook |
LNE |
Red |
Blinking |
Modem in back-up |
LNE |
Red |
Off |
Modem is on-hook |
SUPPORTED COMMAND SET |
Basic AT Commands |
AT, A/ |
A, C, E, H, M, Q, V, X, Y, Z |
&F, &M, &T, &X |
S Registers |
Unidentified |
Note: See MHI Help File for full command documentation. |
PROPRIETARY AT COMMAND SET
COMMAND PORT | |
Type: |
Configuration |
Format: |
AT [cmds] &Yn [cmds] |
Description: |
Enables/disables command port |
Command |
Function |
&Y0 |
Command port disabled |
&Y1 |
Command port enabled |
COMMUNICATION PROTOCOLS | |
Type: |
Configuration |
Format: |
AT [cmds] Bn [cmds] |
Description: |
Selects the communication protocol for data calls |
Command |
Protocol |
B0 |
CCITT modulation with fixed carrier |
CONNECT MODE | |
Type: |
Configuration |
Format: |
AT [cmds] &En [cmds] |
Description: |
Controls the type of connection the modem will operate in |
Command |
Function |
í &E0 |
Normal mode enabled |
&E1 |
MNP/V.42 buffered auto-reliable mode enabled |
&E2 |
V.42 sequence in auto-reliable mode; normal data mode if V.42 is not detected |
&E3 |
V. 42 reliable mode enabled. Disconnect if fails |
&E4 |
MNP auto-reliable mode; normal data mode if MNP is not detected |
&E5 |
MNP reliable mode enabled. Disconnect if fails |
&E6 |
MNP/V. 42 auto-reliable mode; normal data mode if error correction is not detected |
&E7 |
MNP/V. 42 reliable mode enabled. Disconnect if fails |
DATA SET READY (DSR) & DATA CARRIER DETECT (DCD) | |
Type: |
Configuration |
Format: |
AT [cmds] &Cn [cmds] |
Description: |
Selects whether the DSR & DCD option is enabled or disabled |
Command |
Function |
í &C0 |
DSR & DCD forced high |
&C1 |
DSR & DCD are related to modulation standard |
&C2 |
DSR forced high |
&C3 |
DCD forced high |
&C4 |
DSR & DCD forced high. When modem disconnects, DCD goes off for 2 seconds |
&C5 |
DSR & DCD forced high. If DTR goes off or modem disconnects, DSR & DCD go off for 500ms |
DATA TERMINAL READY (DTR) | |
Type: |
Configuration |
Format: |
AT [cmds] &Dn [cmds] |
Description: |
Selects modem response to DTR |
Command |
Function |
í &D0 |
DTR override |
&D1 |
DTR toggle causes online command mode |
&D2 |
Normal DTR operations |
&D3 |
Resets on receipt of DTR |
DIAL | |
Type: |
Immediate |
Format: |
AT [cmds] D<#> [cmds] |
Description: |
Dials telephone number according to any modifiers included in the string |
Note: |
Any combination of modifiers can be used to produce the desired dial functions in sequence. |
Command |
Function |
DR |
Reverse mode enabled |
DP |
Pulse dialing enabled |
DN |
Dial stored telephone number |
DT |
Tone dialing enabled |
DW |
Dialing resumed following dial tone detection |
D, |
Dialing paused |
D! |
Flash function initiated. Modem commanded to go on-hook for .5sec |
D@ |
Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by 5 seconds of silence |
D; |
Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
D/ |
Wait for .125sec |
DISPLAY DIRECTORY NUMBER | |
Type: |
Configuration |
Format: |
AT [cmds] &Nn [cmds] |
Description: |
Displays/deletes telephone directory |
Command |
Function |
&N0 |
Displays directory |
&N99 |
deletes entire telephone dorectory |
DISPLAY STORED TELEPHONE NUMBER | |
Type: |
Configuration |
Format: |
AT [cmds] Nn? [cmds] |
Description: |
Displays stored number n |
DTE FLOW CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] &Un [cmds] |
Description: |
Enables DTE flow control options |
Command |
Function |
í &U0 |
Flow control disabled |
&U1 |
XON/XOFF flow control enabled |
&U2 |
XON/XOFF passed through remote terminal |
&U4 |
RTS/CTS flow control enabled |
&U5 |
Software & hardware flow control enabled |
&U6 |
Software & hardware flow control enabled. XON/XOFF passed through remote terminal |
DUMB MODE CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] &Vn [cmds] |
Description: |
Controls access to command mode |
Command |
Function |
í &V0 |
Normal command mode access enabled |
&V1 |
Command mode access via escape sequence enabled |
&V2 |
Dumb mode; all commands are ignored. Use front panel to change status |
FALLBACK/FALL-FORWARD | |
Type: |
Configuration |
Format: |
AT [cmds] &An [cmds] |
Description: |
Controls multi-standard detection feature which allows the modem to fall-forward and fallback if the modem signaling rate does not match the DTE |
Command |
Function |
&A0 |
multi-standard detection disabled |
&A1 |
multi-standard detection enabled |
FRONT PANEL | |
Type: |
Configuration |
Format: |
AT [cmds] &Sn [cmds] |
Description: |
Enables/disables front panel buttons |
Command |
Function |
&S0 |
Front panel disabled |
í &S1 |
Front panel enabled |
GUARD TONE | |
Type: |
Configuration |
Format: |
AT [cmds] &Gn [cmds] |
Description: |
Commands the modem to transmit a guard tone in V.22/V.22bis |
Command |
Function |
&G0 |
Guard tone disabled |
í &G2 |
1800Hz guard tone enabled |
INTERFACE BUFFER | |
Type: |
Configuration |
Format: |
AT [cmds] &In [cmds] |
Description: |
Allows the DTE to be set to a uniform rate regardless of the rate determined by the communications format selected |
Command |
Function |
&I0 |
Constant speed interface to disabled DTE |
í &I1 |
Constant speed interface enabled; CONNECT message indicates connect rate. Parity is transferred in transparent mode. |
&I2 |
Constant speed interface enabled; CONNECT message indicates DTE rate. Parity is transferred in transparent mode. |
&I3 |
Constant speed interface enabled; CONNECT message indicates connect rate. Parity is reconstructed by the modem. |
LEASED LINE AUTO-HANDSHAKE | |
Type: |
Configuration |
Format: |
AT [cmds] &Hn [cmds] |
Description: |
Enables/disables leased line auto-handshake |
Command |
Function |
&H0 |
Leased line auto-handshake disabled |
í &H1 |
Leased line auto-handshake enabled |
LEASED LINE/SWITCHED LINE NETWORK SELECTION | |
Type: |
Configuration |
Format: |
AT [cmds] &Ln [cmds] |
Description: |
Selects a leased line or switched line network connection |
Command |
Function |
í &L0 |
Switched line |
&L1 |
2 wire leased line |
&L2 |
4 wire leased line |
LINE MODULATION | |
Type: |
Configuration |
Format: |
AT [cmds] Fn [cmds] |
Description: |
Determines modem modulation standard |
Command |
Function |
F0 |
Multi-standard mode |
F1 |
300bps |
F3 |
1200/75bps |
F4 |
1200bps |
F5 |
2400bps |
F6 |
4800bps |
F7 |
7200bps |
F8 |
9600bps |
F9 |
12.0Kbps |
F10 |
14.4Kbps |
F11 |
16.8Kbps |
F12 |
19.2Kbps |
F13 |
21.6Kbps |
F14 |
24.0Kbps |
F15 |
26.4Kbps |
F16 |
28.8Kbps |
F17 |
31.2Kbps |
F18 |
33.6Kbps |
MODEM FLOW CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] &Kn [cmds] |
Description: |
Enables flow control options |
Command |
Function |
&K0 |
Flow control disabled |
&K1 |
XON/XOFF flow control enabled |
&K2 |
RTS/CTS flow control enabled |
&K3 |
Software & hardware flow control enabled |
ON-LINE | |
Type: |
Immediate |
Format: |
AT [cmds] On [cmds] |
Description: |
Controls on-line command (data transmission) state options. |
Command |
Function |
O0 |
On-line command mode with no retraining enabled |
PULSE DIALING RATIO | |
Type: |
Configuration |
Format: |
AT [cmds] &Pn [cmds] |
Description: |
Selects pulse dial make/break ratio |
Command |
Function |
í &P0 |
40/60ms at 10pps (North America) |
&P1 |
33/67ms at 10pps (Europe) |
REPORT INFORMATION | |
Type: |
Immediate |
Format: |
AT [cmds] In [cmds] |
Description: |
Displays information requested |
Command |
Function |
I0 |
Reports modem type |
I1 |
Reports software revision level |
I2 |
Reports ROM checksum |
I3 |
Reports identification in S38 |
I4 |
Reports product code |
I8 |
Reports revision level |
RTS/CTS | |
Type: |
Configuration |
Format: |
AT [cmds] &Rn [cmds] |
Description: |
Selects RTS/CTS options |
Command |
Function |
í &R0 |
CTS follows RTS. Register S26 delays CTS by value selected (0 - 2.55sec) |
&R1 |
CTS forced high, RTS is ignored. |
&R2 |
CTS force high |
&R3 |
CTS always follows RTS |
SPEAKER VOLUME | |
Type: |
Configuration |
Format: |
AT [cmds] Ln [cmds] |
Description: |
Controls speaker volume |
Command |
Function |
L0 |
Low volume setting |
L1 |
Low volume setting |
í L2 |
Medium volume setting |
L3 |
Highest volume setting |
STORE ACTIVE PROFILE | |
Type: |
Configuration |
Format: |
AT [cmds] &Wn [cmds] |
Description: |
Writes the values for the active profile into the non-volatile RAM at location n. |
Command |
Function |
&W0 |
Write the active profile to stored profile 0 |
&W1 |
Write the active profile to stored profile 1 |
&W2 |
Write the active profile to stored profile 2 |
&W3 |
Write the active profile to stored profile 3 |
&W4 |
Write the active profile to stored profile 4 |
&W5 |
Write the active profile to stored profile 5 |
&W6 |
Write the active profile to stored profile 6 |
&W7 |
Write the active profile to stored profile 7 |
&W8 |
Write the active profile to stored profile 8 |
&W9 |
Write the active profile to stored profile 9 |
&W99 |
Writes the 10 factory configurations in the 10 user profiles |
STORE TELEPHONE NUMBER | |
Type: |
Configuration |
Format: |
AT [cmds] Nn&Z [cmds] |
Description: |
Writes selected telephone numbers into the non-volatile memory at location n |
SPECIAL COMMANDS
ASYNCHRONOUS DTR/1 MODE | |
Type: |
Configuration |
Format: |
AT [cmds] *Dn [cmds] |
Description: |
Enables DTR/1 direct call in asynchronous mode |
Command |
Function |
í *D0 |
DTR/1 disabled |
*D1 |
DTR/1 enabled with CTS on in off-line |
*D2 |
DTR/1 enabled with CTS off in off-line |
AUTO-RELIABLE BUFFER/CHARACTER CONFIGURATION | |
Type: |
Configuration |
Format: |
AT [cmds] #An [cmds] |
Description: |
Controls the handling of incoming data during auto-reliable time period |
Command |
Function |
í #A0 |
Auto-reliable buffer and character disabled |
#A1 |
Auto-reliable character enabled |
#A2 |
Auto-reliable buffer enabled |
#A3 |
Auto-reliable buffer and character enabled |
BIT ERROR RATE THRESHOLD | |
Type: |
Configuration |
Format: |
AT [cmds] #Qn [cmds] |
Description: |
Determines Bit Error Rate Threshold to initiate fall-forward/fallback retrain |
Command |
Function |
#Q0 |
Standard bit error rate threshold: SQ=3 equivalent at bit error rate of 1*10-5 |
í #Q1 |
Alternative bit error rate threshold: SQ=2 equivalent at bit error rate of 1*10-3 |
BREAK OPTIONS | ||
Type: |
Configuration | |
Format |
AT [cmds] *Yn [cmds] | |
Description: |
Sets the method for break transmission | |
Command |
Function | |
í *Y0 |
Expedited signaling, immediately send break | |
*Y1 |
Destructive signaling, buffers cleared, immediately send break | |
*Y2 |
In-sequence signaling, break sent in sequence with transmitted data | |
*Y3 |
Break signal ignored |
C140-C141 CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] *Tn [cmds] |
Description: |
Enables/disables C140 & C141 signal interface |
Command |
Function |
í *T0 |
C140 & C141 signal interface disabled |
*T1 |
C140 signal interface enabled |
*T2 |
C141 signal interface enabled |
*T3 |
C140 & C141 signal interface enabled |
*T4 |
C140 & C141 signal interface enabled. C141 requests loop 3 with modem on-line |
CALLING TONE | |
Type: |
Configuration |
Format: |
AT [cmds] *Gn [cmds] |
Description: |
Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating |
Command |
Function |
í *G0 |
Disable calling tone |
*G1 |
Enable calling tone |
DATA COMPRESSION | |
Type: |
Configuration |
Format: |
AT [cmds] *En [cmds] |
Description: |
Enables/disables data compression |
Command |
Function |
*E0 |
Data compression disabled |
í *E1 |
Data compression enabled |
DATA SET READY (DSR) | |
Type: |
Configuration |
Format: |
AT [cmds] *Pn [cmds] |
Description: |
Selects DSR options |
Command |
Function |
í *P0 |
DSR standard |
*P1 |
DSR on for 200ms after aborted call |
*P2 |
DSR follows DCD during handshake |
*P3 |
DSR follows DCD during handshake and DSR wink |
DETECTION PHASE | |
Type: |
Configuration |
Format: |
AT [cmds] #En [cmds] |
Description: |
Enables/disables detection phase before the negotiation of V.42 protocol |
Command |
Function |
#E0 |
Detection phase disabled |
í #E1 |
Detection phase enabled |
DIAL LINE BACK-UP | |
Type: |
Configuration |
Format: |
AT [cmds] #Bn [cmds] |
Description: |
Controls dial line back-up selection |
Command |
Function |
í #B0 |
Dial line back-up disabled |
#B1 |
Dial line back-up enabled; when leased line is in failure the modem automatically uses switched line until power-down |
#B2 |
Dial line back-up enabled with automatic look-back. When leased line is in failure, modem uses switched line for time specified by register S28 |
#B4 |
Dial line back-up controlled by C116 DTE interface circuit |
#B5 |
Dial line back-up enabled with automatic look-back. When leased line is in failure, modem uses switched line for time specified by register S28. LEDs managed differently from #B2 |
DISPLAY BLACKLIST NUMBERS | |
Type: |
Configuration |
Format: |
AT [cmds] *Bn [cmds] |
Description: |
Displays blacklist numbers |
Command |
Function |
*B0 |
Displays delayed and forbidden numbers |
*B1 |
Displays delayed numbers |
*B2 |
Displays forbidden numbers |
DISPLAY CONFIGURATION | |
Type: |
Immediate |
Format: |
AT [cmds] *Cn [cmds] |
Description: |
Displays active configuration. At the end of the list, it is possible to display the error message relative to the connection state. |
DISPLAY STORED NUMBER | |
Type: |
Immediate |
Format: |
AT [cmds] *Nn [cmds] |
Description: |
Displays stored number for DTR/1 direct call in V.25bis mode |
DTE SPEED | |
Type: |
Configuration |
Format: |
AT [cmds] *In [cmds] |
Description: |
Controls DTE interface data rate |
Command |
Function |
í *I0 |
Automode enabled |
*I1 |
300bps |
*I4 |
1200 |
*I5 |
2400bps |
*I6 |
4800bps |
*I7 |
7200bps |
*I8 |
9600bps |
*I10 |
14.4Kbps |
*I11 |
19.2Kbps |
*I13 |
38.4Kbps |
*I14 |
57.6Kbps |
*I15 |
115.2Kbps |
EXTENDED RESULT CODES | |
Type: |
Configuration |
Format: |
AT [cmds] #Xn [cmds] |
Description: |
Enables/disables extended code CONNECT messages to indicate buffer or error correction activation (ATX) |
Command |
Function |
í #X0 |
Extended result codes disabled |
#X1 |
/BUF and /REL messages enabled |
#X2 |
Extended result codes enabled |
#X3 |
Extended result codes enabled. ONL/OFL messages disabled in V.25bis |
FLOW CONTROL DURING RETRAIN | |
Type: |
Configuration |
Format: |
AT [cmds] #Kn [cmds] |
Description: |
Determines flow control handling during retrain phases |
Command |
Function |
í #K0 |
Flow control option during retrain disabled |
#K1 |
Flow control option during retrain follows &K |
FLOW CONTROL TYPE | |
Type: |
Configuration |
Format: |
AT [cmds] *Kn [cmds] |
Description: |
Sets type of flow control used by modem |
Command |
Function |
í *K0 |
CTS forced high |
*K1 |
XON/XOFF flow control enabled |
*K2 |
CTS off during handshake |
*K3 |
CTS off during handshake & XON/XOFF flow control enabled |
*K4 |
CTS off in off-line |
*K5 |
CTS off in off-line & XON/XOFF flow control enabled |
HALF DUPLEX SIMULATION | |
Type: |
Configuration |
Format: |
AT [cmds] #Hn [cmds] |
Description: |
Enables/disables half duplex simulation |
Command |
Function |
í #H0 |
Half-Duplex simulation disabled |
#H1 |
Half-Duplex simulation enabled |
HANDSHAKE BREAK | |
Type: |
Configuration |
Format: |
AT [cmds] #Pn [cmds] |
Description: |
Enables/disables handshake abort if DTE sends data during handshake |
Command |
Function |
í #P0 |
Handshake abort enabled |
#P1 |
Handshake abort disabled |
LINE FLOW CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] *Fn [cmds] |
Description: |
Controls the flow of data between local and remote modems |
Command |
Function |
í *F0 |
Remote flow control disabled |
*F1 |
Remote flow control enabled |
MINIMUM LINE SPEED | |
Type: |
Configuration |
Format: |
AT [cmds] #Fn [cmds] |
Description: |
Determines minimum data rate |
Command |
Function |
í #F0 |
Function disabled. No minimum speed |
#F1 |
300bps |
#F3 |
1200/75bps |
#F4 |
1200bps |
#F5 |
2400bps |
#F6 |
4800bps |
#F7 |
7200bps |
#F8 |
9600bps |
#F9 |
12.0Kbps |
#F10 |
14.4Kbps |
#F11 |
16.8Kbps |
#F12 |
19.2Kbps |
#F13 |
21.6Kbps |
#F14 |
24.0Kbps |
#F15 |
26.4Kbps |
#F16 |
28.8Kbps |
#F17 |
31.2Kbps |
#F18 |
33.6Kbps |
OVERSPEED SELECTION | |
Type: |
Configuration |
Format: |
AT [cmds] *On [cmds] |
Description: |
Sets type of flow control used by modem |
Command |
Function |
í *O0 |
Overspeed +1%: -2.5% |
*O1 |
Overspeed +2.3%: -2.5% |
PREFIX DIALING | |
Type: |
Configuration |
Format: |
AT [cmds] #Wn [cmds] |
Description: |
Enables the automatic dialing of a prefix before every number. Prefix is stored in location 19 of the memory |
Command |
Function |
í #W0 |
Automatic prefix dialing enabled |
#W1 |
Automatic prefix dialing disabled |
REMOTE ACCESS CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] #Tn [cmds] |
Description: |
Sets remote access control |
Command |
Function |
#T0 |
Remote access control disabled |
#T4 |
Modem enabled for remote access, download request and loop 2 remote test |
í #T5 |
Remote access and download request disabled |
#T6 |
Request for remote access control sent |
#T7 |
Request for download of the configuration indicated by registers S65 and S66 sent |
SIGNAL QUALITY ACTION CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] *Qn [cmds] |
Description: |
Controls signal quality action |
Command |
Function |
í *Q0 |
Signal quality action disabled |
*Q1 |
Retrain enabled |
*Q2 |
Fallback enabled (V.34, V.32bis, V.32, or V.22 mode) |
*Q3 |
Disconnects after first aborted retrain |
SPECIAL MODE | |
Type: |
Configuration |
Format: |
AT [cmds] #Vn [cmds] |
Description: |
Selects V.23 full duplex special functioning mode |
Command |
Function |
í #V0 |
V.23 automatic mode: 75bps transmit, 1200bps receive (originate), 1200bps transmit, 75bps receive (answer) |
#V1 |
75bps transmit, 1200bps receive fixed |
#V2 |
1200bps transmit, 75bps receive fixed |
S-REGISTER DISPLAY | |
Type: |
Immediate |
Format: |
AT [cmds] *S [cmds] |
Description: |
Displays values stored in S-registers |
SYNCHRONOUS CLOCK CONTROL | |
Type: |
Configuration |
Format: |
AT [cmds] *Xn [cmds] |
Description: |
Forces modems transmit and receive clock at the DTE interface |
Command |
Function |
*X0 |
Synchronous clocks are on in data mode only |
*X1 |
Synchronous clocks are always on |
TRANSMISSION LEVEL - LEASED | |
Type: |
Configuration |
Format: |
AT [cmds] !Ln [cmds] |
Default: |
10 |
Range: |
3-15 |
Unit: |
-1 dBm |
Description: |
Sets the signal level for transmission over leased phone lines |
TRANSMISSION LEVEL - SWITCHED | |
Type: |
Configuration |
Format: |
AT [cmds] *Ln [cmds] |
Default: |
10 |
Range: |
3-15 |
Unit: |
-1 dBm |
Description: |
Sets the signal level for transmission over switched phone lines |
V.25BIS DTR/1 STORED NUMBER | |
Type: |
Immediate |
Format |
AT [cmds] *Zxxxx [cmds] |
Description: |
Stores a number for DTR/1 operation in V.25bis mode. Must be placed at the end of command string |
V.25BIS MODE | |
Type: |
Configuration |
Format: |
AT [cmds] *Vn [cmds] |
Description: |
Enables/disables V.25bis mode |
Command |
Function |
*V0 |
V.25bis in DTR/2 asynchronous |
*V1 |
V.25bis in DTR/1 synchronous/asynchronous (&M) |
*V2 |
V.25bis in DTR/2 HDLC |
*V7 |
Returns in AT mode |