Card Type	Fax, Modem (synchronous/asynchronous), Voice
Chip Set	Unidentified
I/O Options	Speakerphone, Voice-mail
Maximum Data Rate	14.4Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	Unidentified
Fax Class	Class I & II
Data Modulation Protocol	Bell 103/212A ITU-T V.21, V.22, V.32, V.32bis
Fax Modulation Protocol	ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression	MNP5, MNP10, V.42, V.42bis

MISCELLANEOUS TECHNICAL NOTES

Diagram not available

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘Comma’, A/

A, B, C, E, H, L, M, N, O, P, Q, S, T, V, W, X, Y, Z

&C, &D, &G, &J, &K, &L, &M, &O, &P, &Q, &R, &S, &T, &V, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \F, \G, \J, \K, \L, \N, \Q, \V, \X

%C, %D, %E, %L, %Q

Special Commands

*H, -J, -K, -Q, )M, #CID

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S25, S26, S32, S33

S36, S37, S38, S46, S48, S86, S91, S92, S95

Note: See MHI Help file for full command documentation.

ACTIVE CONFIGURATION
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Description:	Displays the current configuration in long form

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
Type:	Configuration
Format:	AT [cmds] &En [cmds]
Description:	Controls auto-retrain mode and fallback/fall-forward
Command	Function
&E0	Auto-retrain disabled
í &E1	Auto-retrain and auto-fallback enabled
&E2	Auto-fallback/fall-forward enabled

AUTOSYNC ADDRESS CHARACTER
Type:	Register
Format:	AT [cmds] S20=n [cmds]
Default:	0
Range:	0-255
Unit:	1 byte
Description:	Defines the BSC sync character or the HDLC address

BIT-MAPPED REGISTER S19
Format:			AT [cmds] S19=n [cmds]
Default:			16
Range:			0-30
Description:			Controls Hayes AutoSync functions
Bit	Value			Function
0	í 0			Not used
1		í 0 1			BSC enabled SDLC enabled
2		í 0 1			SDLC address disabled SDLC address enabled
3		í 0 1			NRZI enabled NZI enabled
4		0 í 1			SDLC idle on Mark enabled SDLC idle on FLAG enabled

BIT-MAPPED REGISTER S28
Format		AT [cmds] S28=n [cmds]
Default:		0
Range:		0-255
Unit:		Bit-mapped
Description:		Controls pulse dialing and MNP10 link negotiation.
Bit	Value	Function
2 - 0	í 000	Not used
4, 3	í 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	í 0	Not used
7, 6	í 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:		202
Range:		0-255
Description:		Select automode, extended result code format, caller ID functions.
Bit	Value		Function
0	í 0		Not used
1	0 í 1		Auto-mode detection disabled In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary. In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103
3, 2	00 01 í 10		Enables CONNECT result codes to report DTE speed Full reporting of CONNECT result codes Enables CONNECT result codes to report DCE speed
5, 4	í 00 01 10		Caller ID disabled Caller ID displays formatted data Caller ID displays raw hexadecimal data
7, 6	í 11		Not used

BIT-MAPPED REGISTER S40
Format		AT [cmds] S40=n [cmds]
Default:		233
Range:		0-255
Unit:		Bit-mapped
Description:		Controls power level and break handling; selects MNP10 extended services, and block size.
Bit	Value	Function
1, 0	00 í 01 10	MNP10 extended services disabled MNP10 extended services enabled MNP10 extended services enabled without indicating MNP on the answer detection phase.
2	í 0 1	Power level adjustment disabled Power level adjustment enabled
5, 4, 3	000 001 010 011 100 í 101	\K0 \K1 \K2 \K3 \K4 \K5
7, 6	00 01 10 í 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:		135
Range:		0-191
Unit:		Bit-mapped
Description:		Selects compression, auto-retrain, flow control, MNP mode, lock serial port, auto-fallback/fall-forward, and MNP10 - fallback.
Bit	Value	Function
1 - 0	00 01 10 í 11	Data compression disabled MNP5 enabled V.42bis enabled MNP5 and V.42bis enabled
2	0 í 1	Auto-retrain disabled Auto-retrain enabled
3	í 0 1	Flow control disabled Flow control enabled
4	í 0 1	Stream mode for MNP Block mode for MNP
5	í 0 1	Serial speed locked Serial speed follows connect speed
6	í 0	Enable auto-fallback/fall-forward
7	0 í 1	MNP10 to fall back to speeds slower than 4800bps disabled MNP10 to fall back to speeds slower than 4800bps enabled

CHANGE PASSWORD
Type:	Configuration
Format:	AT [cmds] *C [cmds]
Description:	Change remote configuration password
Note:	Must be 6-12 characters long. Default = QWERTY

COMPRESSION
Type:	Configuration
Format:	AT [cmds] &Un [cmds]
Description:	Selects data compression
Command	Function
&U0	Data compression disabled
í &U1	Data compression enabled

COMPRESSION
Type:	Configuration
Format:	AT [cmds] %Cn [cmds]
Description:	Selects data compression
Command	Function
%C0	Data compression disabled
í %C1	Data compression enabled
%C2	V.42bis enabled
%C3	MNP5 enabled

COUNTRY CODE
Type:	Configuration
Format:	AT [cmds] *NCn [cmds]
Description:	Select country code
Note:	Not available on U.S. versions

DCE SPEED
Type:	Configuration
Format:	AT [cmds] %Bn [cmds]
Description:	Controls the highest speed possible
Command		Function
%B300		Set to 300bps
%B1200		Set to 1200bps
%B2400		Set to 2400bps
%B4800		Set to 4800bps
%B9600		Set to 9600bps
%B7200		Set to 7200bps
%B12000		Set to 12Kbps
%B14400		Set to14.4Kbps with V.32bis options

DCE SPEED CONTROL
Type:	Configuration
Format:	AT [cmds] %Gn [cmds]
Description:	Controls how the modem responses to AT%B command
Command		Function
í %G0		AT%B command disabled, DCE speed highest possible or set according to ATF, ATS37 or ATN
%G1		AT%B command enabled by way of AT%G1 or AT%Bn, AT%B command set to current DTE speed

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.
Modifier	Function
L	Re-dial last number
P	Pulse dialing enabled
R	Answer mode enabled, originate mode disabled following handshake initiation
S=n	Dial stored telephone number n
T	Tone dialing enabled
W	Dialing resumed following dial tone detection for amount of time specified in S6 register
,	Dialing paused for amount of time specified in S8 register
!	Modem commanded to go off-hook for amount of time specified in S29 register before returning on-hook
@	Wait for quiet answer, 5 second delay
;	Modem returned to command state after dialing
^	Toggle calling tone enabled/disabled

DISPLAY CALLBACK NUMBERS
Type:	Immediate
Format:	AT [cmds] *L [cmds]
Description:	Displays callback numbers in directories 0-19

DISPLAY FIRMWARE VERSION
Type:	Immediate
Format:	AT [cmds] %V [cmds]
Description:	Displays firmware version

DISPLAY S-REGISTERS
Type:	Immediate
Format:	AT [cmds] %R [cmds]
Description:	Displays all S-registers

EXIT REMOTE CONFIGURATION
Type:	Immediate
Format:	AT [cmds] *X [cmds]
Description:	Exit remote configuration

FACTORY DEFAULT PROFILE
Type:	Configuration
Format:	AT [cmds] &F [cmds]
Description:	Sets values in active profile to values found in the default profile
Command		Function
&F0		V.42 factory defaults
&F1		MNP factory defaults
&F2		Basic asynchronous operation defaults

FLOW CONTROL
Type:	Register
Format	AT [cmds] S39? [cmds]
Description:	Displays the current flow control
Value	Meaning
0	Flow control disabled
3	RTS/CTS flow control enabled
4	XON/XOFF flow control enabled
5	Transparent XON/XOFF flow control enabled
6	Both RTS/CTS and XON/XOFF flow control enabled
7	XON/XOFF passthrough enabled

INACTIVITY TIMER
Type:	Configuration
Format:	AT [cmds] \Tn [cmds]
Default:	0
Range:	0-90
Unit:	1 minute
Description:	Sets the length of time that the modem does not receive information before it disconnects.

INACTIVITY TIMER
Type:	Register
Format	AT [cmds] S30=n [cmds]
Default:	0
Range:	0-90
Unit:	1 minute
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] &Bn [cmds]
Description:	Sets operation of serial port speed
Command	Function
&B0	Serial speed follows connect speed
í &B1	Serial speed locked

MODULATION SELECTION
Type:	Configuration
Format:	AT [cmds] Fn [cmds]
Description:	Controls line modulation unless automode is selected
Command		Function
F0		Automode enabled
F1		Force V.21 or Bell103 (according to ATB command) at 300bps
F2		‘OK’ returned
F3		Force V.23 75TX/1200RX originate or 1200TX/75RX answer FSK
F4		Force V.22 or Bell212A (according to ATB command) at 1200bps
F5		Force V.22bis or Bell2400 (according to ATB command)
F6		Force V.32 at 4800bps
F7		Force V.32 at 7200bps
F8		Force V.32 at 9600bps
F9		Force V.32bis at 12000bps
F10		Force V.32bis at 14400bps

MNP10 - CLASS
Type:	Configuration
Format:	AT [cmds] -Cn [cmds]
Description:	Select the type of class for MNP10
Command		Function
í -C0		Enable MNP10, CLASS 10 selection, synchronous
-C1		Enable MNP10, CLASS 10 selection, asynchronous
-C2		Enable MNP10, CLASS 3 selection
-C3		Enable MNP10, CLASS 2 selection

MNP10 FALLBACK
Type:	Immediate
Format:	AT [cmds] -B [cmds]
Description:	During MNP10 link fallback to the next lower speed

MNP10 FALL-FORWARD
Type:	Immediate
Format:	AT [cmds] -U [cmds]
Description:	During MNP10 link fall-forward to the next higher speed

NUMERIC RESULT CODES
Type:	Configuration
Format:	AT [cmds] &Nn [cmds]
Description:	Selects which type of result codes are displayed
Command		Function
&N0		Hayes format, normal numeric result codes
í &N1		Micrcom QX/4232hs-compatible numeric result codes
&N2		Rockwell numeric result codes, allows forced messages enabled in S95

PASSWORD - LOGON /CALLBACK
Type:	Configuration
Format:	AT [cmds] *Pn=xxx=yyy [cmds]
Description:	Set password for callback and logon
Note:	n=0-19 xxx=password yyy=callback number. If there are no callback numbers in the directory logon access only. If security is active and there’s no callback numbers, the modem will not accept any passwords and hang-up.

READ-ONLY REGISTERS
Register	Default
S14	138
S21	0
S22	52
S23	59
S27	73

REMOTE CONFIGURATION - ENTER/EXIT
Type:	Immediate
Format:	AT [cmds] *En [cmds]
Description:	Enter/exit remote configuration, RCM not stored, configure with each use
Command		Function
*E0		Exit remote configuration
*E1		Enter remote configuration access, ‘****’ from remote allows entry

REMOTE CONFIGURATION - MNP ONLY
Type:	Immediate
Format:	AT [cmds] *R [cmds]
Description:	Enter remote configuration during MNP mode

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports modem model and speed
I1	Reports ROM checksum
I2	Tests ROM checksum, and reports ‘OK’ or ‘ERROR’
I3	Reports firmware revision
I4	Reports manufacturer’s testing string
I5	Reports country code
I6	Reports data pump type

SECURITY
Type:	Configuration
Format:	AT [cmds] -Sn [cmds]
Description:	Controls the security feature for logon and callback
Command		Function
í -S0		Security disabled
-S1		Security enabled
-S2		Current security configuration saved in NVRAM

SLEEP TIMER
Type:	Register
Format	AT [cmds] S24=n [cmds]
Default:	5
Range:	0-255
Unit:	1 seconds
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

TRANSMISSION LEVEL - CELLULAR
Type:	Configuration
Format:	AT [cmds] @Mn [cmds]
Description:	Sets the signal level for transmission while in cellular mode, MNP10
Command	Function
@M0	Initial transmit level fixed
@M1	Initial transmit level last used