SNM49 modem/telephone/ISDN Settings and Configuration

Card Type	Modem
Chip Set	Unidentified
I/O Options	Power, 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)		CN3
25-pin serial port		CN2		Power switch		SW1

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	Off	Modem is on-hook

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/

A, C, E, H, L, M, Q, V, X, Y, Z

&F, &M, &T, &X

S Registers

Unidentified

Note: See MHI Help File for full command documentation.

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.

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

ASYNCHRONOUS 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

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 modem’s 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 - 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