Card Type	Modem, Fax
Chip Set	Rockwell
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell 56K
Fax Modulation Protocol	ITU-T V.17, V.21, V.27ter, V.29
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Class I
Data Bus	External

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, B, D, E, H, M, N, O, P, T, V, W, X, Y, Z

&C, &P, &Q, &W, &Y, &Z

Extended AT Commands

\N

%C, %E, %G, %L

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S24, S25, S26, S29, S30, S32, S33, S38

Special Commands

#CID, +MS

Note: See MHI Help File for full command documentation.

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
%E1	Auto-retrain enabled

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Note: The action each variant of &D causes depends on the setting of &Q
&Q Setting		&D0	&D1	&D2	&D3
í &Q0, &Q5, &Q6		NONE	Command 3	Command 1	Command 4
&Q1, &Q4		Command 2	Command 3	Command 1	Command 4
&Q2, &Q3		Command 1	Command 1	Command 1	Command 1
Command	Function
í Command 0	Modem does not respond to DTR
Command 1	Modem goes to command mode after DTR goes is off
Command 2	Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.
Command 3	Modem is initialized after DTR goes off

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
í &F0	Restore factory (PC) configuration; with hardware flow control, error correction, and data compression enabled
&F1	Restore factory (Mac) default configuration, with hardware flow control, error correction, and data compression enabled

FLASH ROM
Type:	Configuration
Format:	AT [cmds] ** [cmds]
Description:	Set flash ROM code XMODEM upload mode

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Enables flow control options
Command	Function
&K0	Flow control disabled
í &K3	RTS/CTS flow control enabled
&K4	XON/XOFF flow control enabled
&K5	Transparent XON/XOFF flow control enabled
&K6	Both RTS/CTS and XON/XOFF flow control enabled

LINE SIGNAL QUALITY
Type:	Immediate
Format:	AT [cmds] %Q [cmds]
Description:	Returns a value which indicates line signal quality
Command	Function
%Q0	Connection statistics
%Q1	Data transfer statistics
%Q2	Data transfer stats

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports maximum data carrier rate
I1	Reports ROM checksum
I2	Tests and reports ROM checksum
I3	Reports ROM code revision number
I4	Reports supported protocols, in encrypted format
I5	Reports firmware copyright information
I6	Reports country code for country PSTN signals
I7	Reports DSP model and version code
I9	PnP COMID string
I10	Reports features supported by the modem

RESULT CODES
Type:	Configuration
Format:	AT [cmds] Qn [cmds]
Description:	Enables modem to send result codes to the DTE
Command	Function
í Q0	Result code sending enabled
Q1	Result code sending disabled
Q2	Enables result code sending on originate; disable on answer

SPEAKER VOLUME
Type:	Configuration
Format:	AT [cmds] Ln [cmds]
Description:	Controls speaker volume
Command	Function
L0	Speaker disabled
í L2	Medium volume setting
L3	Highest volume setting

COUNTRY CODE DISPLAY
Type:	Configuration
Format:	AT [cmds] *NC? [cmds]
Description:	Display country codes and configurations supported

COUNTRY CODES SELECT
Type:	Configuration
Format:	AT [cmds] *NCn [cmds]
Description:	Select country code
Command	Function
*NC000	United States
*NC001	Austria
*NC002	Belgium
*NC003	Denmark
*NC004	Finland
*NC005	France
*NC006	Germany
*NC007	Ireland
*NC008	Italy
*NC010	Netherlands
*NC011	Norway
*NC012	Portugal
*NC013	Spain
*NC014	Sweden
*NC015	Switzerland
*NC016	United Kingdom
*NC017	Greece
*NC022	United States
*NC040	Australia
*NC043	Japan
*NC047	Singapore
*NC060	South Africa
*NC061	Korea

DIALING CODES
Type:	Configuration
Format:	AT [cmds] *Zn [cmds]
Description:	Change dialing codes
Command	Function
*Z0	Use dial code 0
*Z1	Use dial code 1

AUTOMATIC RATE ADAPTION
Type:	Register
Format	AT [cmds] S191=n [cmds]
Default:	128
Range:	0-255
Description:	Sets the automatic rate adaption bias

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Default:		Unidentified
Range:		0-111
Unit:		Bit-mapped
Description:		Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.
Bit	Value	Function
0	0 1	&M0/&Q0 &Q4
0	1, 0 1, 1	&M2/&Q2 &Q6
1	0, 0 0, 1	&M1/&Q1 &Q5
2	0 1	Dial up line Leased line
4	0 1	Internal sync clock select external sync clock select
6	0 1	ITU Bell
7	128	Reserved

CONNECTION FAILURE CODES
Type:	Register
Format	AT [cmds] S86? [cmds]
Description:	Reports codes which correspond to the possible causes of a connection failure
Value	Meaning
0	Normal hang up
1 - 3	No failure - normal hang-up after fax connection
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
15	Negotiated compression failed
16	Line speeds selected in S37 and S109 did not match
17	Time limit reached according to parameters set in S116
18	Time limit reached according to parameters set in S30
19	Long Space Disconnect (Y1) time limit reached
20	Key abort
21	V.42bis protocol violation

DISPLAY CONTROL
Type:			Register
Format:			AT [cmds] S201=n [cmds]
Description:			Controls the display
Bit	Value			Function
0	0 1			Carrier statistics disabled Carrier statistics enabled
1					REJ or SREJ from occurrence is also shown
2					Reserved
3		0 1			Rate re-negotiation display disabled Rate re-negotiation display enabled
4		0			Demo mode disabled
5		0 1			LCD/LED update time fast LCD/LED update time slow
6					Reserved
7					Reserved

DISPLAY CONTROL
Type:		Register
Format		AT [cmds] S194=n [cmds]
Unit:		Bit-mapped
Description:		Sets the display control
Bit	Value	Function
0	1	Display basic mode
1	2	Carrier stats, issue ATZ after clearing this command to return to normal operation
2	4	Reserved
3	0 1	Rate renegotiation display disabled Rate renegotiation display enabled
4	16	Demo mode disabled
5	0 1	LCD/LED Dwell time fast LCD/LED Dwell time slow
6	64	Reserved
7	128	Reserved

ERROR CORRECTION NEGOTIATION
Type:	Register
Format	AT [cmds] S36=n [cmds]
Description:	Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q.
Command	Function
S36=0	Hang up
S36=1	Attempt a direct connection
S36=3	Reserved
S36=4	Attempt a connection at MNP2-4; if that fails, hang up.
S36=5	Attempt a connection at MNP2-4; if that fails, attempt a direct connection.
S36=6	Reserved
í S36=7	Attempt a connection at MNP2-4; if that fails, attempt a buffered connection.

EXTENDED RESULT CODES
Type:		Register
Format		AT [cmds] S95=n [cmds]
Default:		0
Range:		0-255
Unit:		Bit-mapped
Description:		Works in combination with the Wn command to enable extended result codes. Features enabled by S95 take precedence over the options selected by Wn.
Bit	Value	Function
0	1	CONNECT XXXX result code indicates DCE to DCE rate instead of DTE to DTE rate
1	2	Append/ARQ to CONNECT result code if EC is active
2	4	Enable CARRIER XXXX result code
3	8	Enable PROTOCOL XXXX result code
4	16	Undefined
5	32	Enable compression result code
6	64	Enable TX and RX V.34 CARRIER result code if in asymmetric carrier mode
7	128	Enable RINGING result code for ringback detection

MINIMUM EQM
Type:	Register
Format:	AT [cmds] S190=n [cmds]
Default:	20
Range:	10-255
Unit:	seconds
Description:	Sets the minimum "good" EQM

SERIAL PnP FUNCTION CONTROL
Type:		Register
Format		AT [cmds] S193=n [cmds]
Description:		Controls serial PnP function
Bit	Value	Function
0	0 1	Serial PnP saved to NVRAM disabled Serial PnP saved to NVRAM enabled
1		Reserved
2		Reserved
3		Reserved
4		Reserved
5		Reserved
6		Reserved
7		Reserved

SPECIAL FUNCTION CONTROL
Type:		Register
Format		AT [cmds] S192=n [cmds]
Unit:		Bit-mapped
Description:		Controls the special functions
Bit	Value	Function
0	0 1	Silent answer snoop mode Standard Fast
1	0 1	Adaptive answer mode Attempt data carrier first, switch to fax mode if not successful Attempt data carrier first, switch to fax mode if only CNG tone detected
2	0 1	V.34 transmitter power reduction based on INFO1 sequence disabled V.34 transmitter power reduction based on INFO1 sequence enabled
3	0 1	V.34 phase 4 TRN period disabled V.34 phase 4 TRN period enabled
4	0 1	V.34 rate limiting after connection disabled V.34 rate limiting after connection enabled
5	0 1	V.34 EQM threshold reduction for 3000 and 3429 symbol rates disabled V.34 EQM threshold reduction for 3000 and 3429 symbol rates enabled
6	0 1	No action when possible false V.34 carrier is detected Retrain when possible false V.34 carrier is detected
7	0 1	Silent answer reason code off Silent answer reason code on

CALL REQUEST WITH ADDRESS
Type:	Immediate
Format:	CRSn
Description:	Dials the number stored in memory register n

CALL REQUESTED NUMBER
Type:	Immediate
Format:	CRN<#>
Description:	Dials the number given; it will ignore spaces and hyphens in the string; if the string is more than fifty characters long, a result of INV will be returned.

CONNECT INCOMING CALLS
Type:	Immediate
Format:	CIC
Description:	Instructs the modem to answer an incoming call; if no call is currently incoming, a result of INV will be returned.

DISREGARD INCOMING CALL
Type:	Immediate
Format:	DIC
Description:	Instructs the modem to ignore the incoming call, if the modem is set to automatically answer; if no call is currently incoming, a result of INV will be returned.

PROGRAM NUMBER
Type:	Configuration
Format:	PRNn;<#> or PRNn
Description:	Stores a phone number in memory address n; if the number is more than fifty characters long, a result of INV will be returned. If the second form of this command is issued (i.e. with no string to store), it will clear memory address n.

REQUEST LIST OF DELAYED NUMBERS
Type:	Immediate
Format:	RLD
Description:	Requests the list of delayed numbers from the modem; this is a list of numbers that the modem attempted to call and failed, and is not allowed to call again until a set amount of time has elapsed; this is usually to prevent repeated dialing of a number (which could indicate an attempted security breach.) If this feature is not enabled, the modem will return INV.

REQUEST LIST OF FORBIDDEN NUMBERS
Type:	Immediate
Format:	RLF
Description:	Requests the list of forbidden numbers from the modem; the modem is unable to dial numbers on this list until its power has been cycled; if this feature is not enabled, the modem will return INV.

REQUEST LISTED NUMBERS
Type:	Immediate
Format:	RLI
Description:	Requests the modem to return the list of stored numbers; if no numbers are stored, the modem will return LSN.

DISTINCTIVE RING
Format:			AT [cmds] -SDR=n [cmds]
Default:			Unidentified
Range:			0 - 7
Description:			Selects which distinctive ring signals the modem will respond to.
Bit	Value			Function
0	0 1			Do not respond to distinctive ring type 1. Respond to distinctive ring type 1.
1		2			Enables double rings and reports these as RING 2 0.8s on, 0.4s off, 0.8s on, 0.4s off
2		4			Enables triple rings and reports these as RING 3 0.4s on, 0.2s off, 0.2s off, 4.0s off

LCD DISPLAYS
Type:	Configuration
Format:	AT [cmds] #LCDn [cmds]
Description:	Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating
Command	Function
#LCD0	"STRING mode disabled
#LCD1	"STRING string is displayed on LCD line 1
#LCD2	"STRING string is displayed on LCD line 2

MODE SELECTION
Type:	Immediate
Format:	AT [cmds] #CLS=n [cmds]
Description:	Selects which mode the modem will operate in.
Command	Function
#CLS=0	Modem will operate in data mode.
#CLS=1	Modem will operate in fax class I mode.
#CLS=2	Modem will operate in fax class II mode.
#CLS=8	Modem will operate in voice mode.

SELECT DATA, FAX, OR VOICE/AUDIO
Type:	Immediate
Format:	AT [cmds] #CLSn [cmds]
Description:	Selects data, fax, or voice/audio
Command	Function
#CLS0	Select data mode
#CLS1	Select class 1 fax
#CLS2	Select class 2 fax
#CLS8	Select voice/audio mode
#CLS8	Select online voice command mode

TOTAL VOLUME GAIN
Type:	Configuration
Format:	AT [cmds] L:nn [cmds]
Description:	Sets the total volume gain adjustment
Command	Function
í L:=00	Lowest gain
L:=31	Highest gain

VOICE DEVICE
Type:	Configuration
Format:	AT [cmds] #VLS=n [cmds]
Description:	Selects the I/O device for the DSP chip.
Note:	This modem may not support all options listed below. The #VLS? Command will display the available options.
Command	Function
í #VLS=0	Telephone line and handset used for voice I/O.
#VLS=1	Telephone handset used for voice I/O.
#VLS=2	Internal speaker only used for voice I/O.
#VLS=3	External microphone only used for voice I/O.
#VLS=4	Telephone line and handset used for voice I/O; internal speaker enabled.
#VLS=5	Headset used for voice I/O.
#VLS=6	Speakerphone used for voice I/O.
#VLS=7	Handset muted by disconnecting handset or speakerphone from telephone line.
#VLS=8	Connects caller ID relay for recording of conversation over handset.
#VLS=9	Connects handset (or speakerphone) to DSP chip for recording or playback.

VOICE DEVICE
Type:	Configuration
Format:	AT [cmds] #VLS=n [cmds]
Description:	Selects the I/O device for the DSP chip.
Note:	This modem may not support all options listed below. The #VLS? Command will display the available options.
Command	Function
í #VLS=0	Telephone line and handset used for voice I/O.
#VLS=1	Telephone handset used for voice I/O.
#VLS=2	Internal speaker only used for voice I/O.
#VLS=3	External microphone only used for voice I/O.
#VLS=4	Telephone line and handset used for voice I/O; internal speaker enabled.
#VLS=5	Headset used for voice I/O.
#VLS=6	Speakerphone used for voice I/O.
#VLS=7	Handset muted by disconnecting handset or speakerphone from telephone line.
#VLS=8	Connects caller ID relay for recording of conversation over handset.
#VLS=9	Connects handset (or speakerphone) to DSP chip for recording or playback.

VOICE RING DETECT TIME
Type:	Configuration
Format:	AT [cmds] #VRN=n [cmds]
Default:	Unidentified
Range:	Unidentified
Unit:	Unidentified
Description:	Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang.
Command	Function
í #VLS=0	Disables the "ringback never came timer"

VOICE RING DETECT TIME
Type:	Configuration
Format:	AT [cmds] #VRN=n [cmds]
Default:	Unidentified
Range:	Unidentified
Unit:	Unidentified
Description:	Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang.
Command	Function
í #VRN=0	Turns off the ringback never came timer. After dialing the modem sends VCON and immediately enters online voice command control

ERROR CONTROL SELECTION
Type:	Configuration
Format:	AT [cmds] +ESn, m, o, [cmds]
Description:	Selects the error control setting
Command	Function
n=0	Direct mode
n=1	Buffered mode
n=2	Initiate V.42 without detection
n=3	Initiate V.42 with detection
n=4	Alternate protocol (MNP)
n=5	Initiate with synchronous mode
n=6	Initiate with V.80 synchronous access mode
m=0	Error control optional; if error control is not established, maintain DTE-DCE data rate to match line rate and use buffered mode with flow control.
m=1	Error control optional; if error control is not established, change DTE-DCE data rate to match line rate and use direct mode
m=2	Error control required; if no LAPM, disconnect
m=3	MNP required; if no MNP, disconnect
o=0	Direct mode
o=1	EC disabled, buffered mode
o=3	EC optional; if no EC, use direct mode
o=4	Error control required; if no EC, disconnect
o=5	Error control optional; if no EC, disconnect
o=6	MNP error control required, if no MNP, disconnect
o=7	Synchronous mode
o=8	V.80 synchronous access mode.

INPUT BUFFER
Type:	Configuration
Format:	AT [cmds] Cn [cmds]
Description:	Controls the input buffer size.
Command	Function
n=0	10 - 759 bytes
o=0	11 - 760 bytes
p=0	Disables transmit level reporting
q=0	Sets the lowest carrier rate that may be used
r=0	Sets the maximum carrier rate that may be used

MANUFACTURER ID
Type:	Configuration
Format:	AT [cmds] +GMI [cmds]
Description:	Displays the manufacturer ID

MODEL ID
Type:	Configuration
Format:	AT [cmds] +GMM [cmds]
Description:	Displays the model ID

REQUEST CAPABILITIES LIST
Type:	Configuration
Format:	AT [cmds] +GCAP [cmds]
Description:	Displays one or more lines of information reporting the V.25ter commands available in the modem

ROM CODE
Type:	Configuration
Format:	AT [cmds] +GMRn, o, p, q, r [cmds]
Description:	Display the ROM code

SELECTIVE REPEAT
Type:	Configuration
Format:	AT [cmds] +ESRn [cmds]
Description:	Control selective repeat
Command	Function
+ESR0	Do not use SREJ
+ESR1	Use SREJ if available in remote DCE; continue without it if not

SYNCHRONOUS ACCESS MODE
Type:	Configuration
Format:	AT [cmds] +ESAn, m, o, p, q, r, s, t [cmds]
Description:	Specifies the bit sequence transmitted by the DCE when a transmit data buffer underrun condition occures while operating in transparent sub-mode
Command	Function
n=0	In transparent sub-mode, the DCE transmits SYN1 on idle. DCE receiver does not seek synchronization sequence
n=0	In transparent sub-mode, the DCE transmits SYN1 on idle. DCE receiver seeks SYN1 as a synchronization sequence
m=0	In framed sub-mode, the DCE transmits HDLC flage on idle
m=0	In framed sub-mode, the DCE transmits marks on idle
o=0	In framed sub-mode, DCE transmits HDLC abort when underrun during a frame
o=0	In framed sub-mode, the DCE transmits HDLC flag when underrun during a frame
p=0	Half duplex V.34 carriers are not supported. Value must be 0
q=0	CRC generation and checking disabled
r=0	NRZI encoding and decoding disabled
r=0	NRZI encoding and decoding enabled
s=0	Specifies the 8-bit transparent sub-mode synchronization sequence and idle transmission value.
T=0	Specifies the 16-bit synchronization sequences are not supported.

V.42bis DATA COMPRESSION
Type:	Configuration
Format:	AT [cmds] +DSn, m, o, p [cmds]
Description:	Controls the V.42bis data compression
Command	Function
n=0	Disabled
n=1	Compression on transmit only
n=2	Compression on receive only
n=3	Bi-directional compression
m=0	Do not require V>42bis compression when connecting
o=0	V.43bis dictionary size for bi-directional compression
o=1	V.42bis maximum dictionary size for bi-directional compression
p=0	Maximum V.42bis string size