CONNECTIONS
Purpose	Location	Purpose	Location
YES button	BT1	Leased line out	CN2
NO button	BT2	RS-232/422	CN3
TALK/DATA button	BT3	Fuse	FUSE
Switched line out	CN1	Power switch	SW1

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low
CS	Red	On	CTS signal is high
CS	Red	Off	CTS signal is low
RS	Red	On	RTS signal is high
RS	Red	Off	RTS signal is low
CD	Red	On	Carrier signal detected
CD	Red	Off	Carrier signal not detected
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

ANSWER/ORIGINATE MODE
Type:	Configuration
Format:	AT [cmds] *ORn [cmds]
Example:	AT *OR0<CR>
Description:	Selects whether the modem is in answer or originate mode.
Command	Function
» *OR0	Modem is in originate mode.
*OR1	Modem is in answer mode.

AUTO-ANSWER OVERRIDE
Type:	Immediate
Format:	AT [cmds] *IC [cmds]
Example:	AT *IC<CR>
Description:	Instructs the modem to ignore the incoming call, if the modem is set to automatically answer.

AUTODIALING STORED NUMBER
Type:	Configuration
Format:	AT [cmds] *AUn [cmds]
Example:	AT *AU4 *CN4,1(303)443-3388<CR>
Description:	Sets the autodialing function to dial the number stored in memory location n.

AUTO-RELIABLE FALLBACK CHARACTER
Type:	Register
Format:	AT [cmds] %An [cmds]
Example:	AT%A20<CR>
Default:	19
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character. %A0 will disable this function.

AUTO-RELIABLE FALLBACK CHARACTER
Type:	Register
Format:	AT [cmds] S64=n [cmds]
Example:	ATS64=20<CR>
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character. S64=0 will disable this function.

AUTO-RELIABLE TIME BUFFER CONFIGURATION
Type:	Configuration
Format:	AT [cmds] \Cn [cmds]
Example:	AT \C1 &W<CR>
Description:	Controls the handling of incoming data during auto-reliable time period.
Command	Function
» \C0	Data is discarded.
\C1	Data is buffered.

AUTO-RETRAIN
Type:	Configuration
Format:	AT %En
Example:	AT %E1 *MM12<CR>
Description:	Selects auto-retrain mode.
Command	Function
%E0	Auto-retrain disabled.
» %E1	Auto-retrain enabled.

BIT-MAPPED REGISTER S14
Format		AT [cmds] S14=n [cmds]
Example:		ATS14=40<CR>
Default:		138
Range:		0 - 190
Unit:		Bit-mapped
Description:		Controls command echo, result codes, dialing mode, and answer/originate mode.
Bit	Value		Function
0	0		Not used.
1	0 » 1		Command echo off. Command echo on.
2	» 0 1		Result codes enabled. Result codes disabled.
3	0 » 1		Numeric result codes. Verbose result codes.
4	» 1		Not used.
5	» 0 1		Tone dialing selected. Pulse dialing selected.
6	0		Not used.
7	0 » 1		Answer mode selected. Originate mode selected.

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Example:		ATS21=1<CR>
Default:		132
Range:		0 - 255
Unit:		Bit-mapped
Description:		Controls low DTR action, DCD signal, and the Long Space Disconnect function.
Note:		Be aware that the bits are out of order.
Bit	Value		Function
6, 0	» 00 01 10 11		DSR forced high. DSR normal, except forced low on disconnect. DSR normal. DSR follows OH.
5, 1	» 00 01 10 11		CD forced high. CD forced high except during disconnect. CD normal. CD follows remote RTS signal.
2	0 » 1		CTS normal. CTS forced high.
4, 3	» 00 01 10 11		DTR signal ignored. Modem goes to command mode on low DTR. Modem disconnects on low DTR. Modem resets on low DTR.
7	0 » 1		Long Space Disconnect function disabled. Long Space Disconnect function enabled.

BIT-MAPPED REGISTER S22
Format		AT [cmds] S22=n [cmds]
Example:		ATS22=114<CR>
Default:		70
Range:		0 - 255
Unit:		Bit-mapped
Description:		Controls volume and speaker settings, result codes, and make/break pulse ratio.
Bit	Value		Function
1, 0	00 01 » 10 11		Lowest volume setting. Low volume setting. Medium volume setting Highest volume setting.
3, 2	00 » 01 10 11		Speaker disabled. Speaker enabled until carrier signal detected Speaker enabled. Speaker enabled following dialing, then disabled after carrier signal detected.
6, 5 ,4	000 001 010 011 » 100		Busy and dialtone detection disabled, result codes 0-4 enabled. Busy and dialtone detection disabled, result codes 0-5, 10 enabled. Busy tone detection disabled, dialtone detection enabled, result codes 0-6, 10 enabled. Busy tone detection enabled, dialtone detection disabled, result codes 0-5, 7, 10 enabled. Busy and dialtone detection enabled, result codes 0-7, 10 enabled.
7	» 0 1		Pulse dialing at 39/61ms at 10pps. Pulse dialing at 33/67ms at 10pps.

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Example:		ATS23=177<CR>
Default:		1
Range:		0 - 129
Unit:		Bit-mapped
Description:		Grants/denies remote digital loopback and sets guard tone.
Bit	Value		Function
0	0 » 1		Remote digital loopback denied. Remote digital loopback allowed.
1	0		Not used.
2	0		Not used.
3	0		Not used.
4	0		Not used.
5	0		Not used.
7, 6	» 00 01 10		Guard tone disabled. Guard tone at 500Hz enabled. Guard tone at 1800Hz enabled.

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Example:		ATS27=9<CR>
Default:		9
Range:		0 - 127
Unit:		Bit-mapped
Description:		Selects sync/async mode, line type, clock source, and ITU-T/Bell modes.
Bit	Value		Function
1, 0	00 01 » 10 11		Asynchronous command and data modes. Asynchronous command, synchronous connect mode. DTR dialing enabled, synchronous connect mode. Manual dialing only, synchronous connect mode.
2	» 0 1		Switched line. Leased line.
3	0		Not used.
5, 4	» 00 01 10		Internal DTE transmit clock source. External DTE transmit clock source. Slave DTE transmit clock source.
6	» 0 1		DTR dialing enabled. DTR dialing disabled.

BIT-MAPPED REGISTER S29
Format		AT [cmds] S29=n [cmds]
Example:		ATS29=4<CR>
Default:		0
Range:		0 - 135
Unit:		Bit-mapped
Description:		Controls command set, option retaining, V.32 fast handshaking, and DTE fallback.
Bit	Value		Function
0	» 0 1		AT command set enabled. AT command set disabled.
1	» 0 1		Modem will not reset on disconnect. Modem will reset on disconnect.
2	» 0 1		Normal V.32 handshake sequence. Training time is shortened by 2 seconds in V.32 and V.32bis modes.
3	0		Not used.
4	0		Not used.
5	0		Not used.
6	0		Not used.
7	» 0 1		DTR dialing enabled. DTR dialing disabled.

BIT-MAPPED REGISTER S32
Format		AT [cmds] S32=n [cmds]
Example:		ATS32=14<CR>
Default:		6
Range:		0 - 15
Unit:		Bit-mapped
Description:		Controls line type, disconnect on loss of current, and leased line backup mode.
Bit	Value		Function
0	» 0 1		2-wire leased line. 4-wire leased line.
2, 1	00 01 » 11		Do not disconnect on loss of current. Disconnect after 8ms if current is lost. Disconnect after 90ms if current is lost.
3	» 0 1		Modem will restore leased line connection only when modem receives *LB or *LD. Modem will restore leased line connection automatically.

BIT-MAPPED REGISTER S60
Format		AT [cmds] S60=n [cmds]
Example:		ATS60=4<CR>
Default:		67
Range:		0 - 199
Unit:		Bit-mapped
Description:		Controls auto-retrain, MNP, auto-reliable time buffering, RI signal, and extended result codes.
Bit	Value		Function
0	0 » 1		Auto-retrain disabled. Auto-retrain enabled.
1	0 » 1		MNP disabled. MNP enabled.
2	» 0 1		Data is discarded during auto-relaible time. Data is buffered during auto-relaible time.
5 - 3	0		Not used.
6	0 » 1		RI signal high during rings, and forced high for duration of call. RI signal high during rings only.
7	» 0 1		Extended result codes disabled. Extended result codes enabled.

BIT-MAPPED REGISTER S70
Format		AT [cmds] S70=n [cmds]
Example:		ATS70=7<CR>
Default:		15
Range:		0 - 15
Unit:		Bit-mapped
Description:		Controls connect mode and V.42 negotiation mode.
Bit	Value		Function
2, 1, 0	000 001 010 011 100 101 110 » 111		Normal mode enabled. Direct mode enabled. MNP mode only enabled. MNP mode with fallback to normal mode enabled. LAP-M mode only enabled. LAP-M mode with fallback to normal mode enabled. LAP-M mode with fallback to MNP enabled. LAP-M mode with fallback to MNP and normal modes enabled.
3	0 » 1		Normal V.42 handshaking enabled. Fast V.42 handshaking enabled.

BIT-MAPPED REGISTER S72
Format		AT [cmds] S72=n [cmds]
Example:		ATS72=7<CR>
Default:		0
Range:		0 - 137
Unit:		Bit-mapped
Description:		Controls serial port lock, CTS signal, and autocallback function.
Bit	Value		Function
0	» 0 1		Serial speed locked. Serial speed follows connect speed.
2 - 1	0		Not used.
3	» 0 1		CTS normal. CTS follows CD.
6 - 4	0		Not used.
7	» 0 1		Autocallback disabled. Autocallback enabled. The modem, upon detecting an incoming call, will dial the default number and connect with it instead of the incoming call.

BIT-MAPPED REGISTER S84
Format		AT [cmds] S84=n [cmds]
Example:		ATS84=7<CR>
Default:		0
Range:		0 - 93
Unit:		Bit-mapped
Description:		Controls disconnect during handshaking, V.22 fallback, answerback, dial backup trigger, and frame tracking.
Bit	Value		Function
0	» 0 1		Disconnect if key is pressed during handshaking. Do not disconnect if key is pressed during handshaking.
1	0		Not used.
2	» 0 1		Normal fallback to V.22. Fast fallback to V.22.
3	» 0 1		Normal answerback. Fast answerback.
4	» 0 1		DTR signal must go from low to high four times for dial backup to occur. DTR signal must go from low to high once for dial backup to occur.
5	0		Not used.
6	» 0 1		Frame tracking disabled. Frame tracking enabled.

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Example:	AT \B50 O<CR>
Default:	35
Range:	1-255
Unit:	20ms
Description:	Sends break to modem.

BREAK LENGTH
Type:	Register
Format:	AT [cmds] S79=n [cmds]
Example:	ATS79=20<CR>
Default:	35
Range:	0 - 255
Unit:	20 ms
Description:	Sets the length of breaks sent from DCE to DTE.

BREAK TYPE
Type:		Configuration
Format:		AT [cmds] \Kn [cmds]
Example:		AT \K1 <CR>
Description:		Configures action of break signal.
Command	Break from DTE Reliable/Normal mode		Break from DTE Direct mode	Modem receives \B	Break from remote modem
\K0	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K1	Buffers cleared and break sent to remote modem.		Send break to remote modem immediately.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K2	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem immediately.	Send break to DTE immediately.
\K3	Send break to remote modem immediately.		Send break to remote modem immediately.	Send break to remote modem immediately.	Send break to DTE immediately.
\K4	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.
» \K5	Send break with transmitted data.		Send break to remote modem immediately.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.

BREAK TYPE
Type:		Register
Format:		AT [cmds] S59=n [cmds]
Example:		AT S59=1 <CR>
Description:		Configures action of break signal.
Command	Break from DTE Reliable/Normal mode		Break from DTE Direct mode	Modem receives \B	Break from remote modem
S59=0	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
S59=1	Buffers cleared and break sent to remote modem.		Send break to remote modem immediately.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
S59=2	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem immediately.	Send break to DTE immediately.
S59=3	Send break to remote modem immediately.		Send break to remote modem immediately.	Send break to remote modem immediately.	Send break to DTE immediately.
S59=4	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.
» S59=5	Send break with transmitted data.		Send break to remote modem immediately.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.

CD SIGNAL
Type:	Configuration
Format:	AT [cmds] &Cn [cmds]
Example:	AT &C3 *RS1 *SR1<CR>
Description:	Configures the behavior of the carrier detect signal.
Command	Function
» &C0	CD forced high.
&C1	CD normal.
&C2	CD forced high except during disconnect.
&C3	CD follows remote RTS signal.

CHARACTER LENGTH AND PARITY
Format		AT [cmds] S61? [cmds]
Example:		ATS61?<CR>
Default:		Read-only
Range:		0 - 56
Unit:		Bit-mapped
Description:		Reports current character length and parity.
Bit	Value		Meaning
2 - 0	0		Not used.
3	0 » 1		7 bit character length set. 8 bit character length set.
5, 4	» 00 01 10 11		MARK parity. No parity. Odd parity. Even parity.

COMMAND SET
Type:	Configuration
Format:	AT [cmds] *NTn [cmds]
Example:	AT *NT0<CR>
Description:	Disables the AT command set.
Note:	To re-enable the command set, power down the modem and then cycle power seven times. The modem must remain powered on each time at least one second but not more than five.
Command	Function
» *NT0	Command set disabled.
*NT1	Command set enabled.

COMMUNICATIONS MODE
Type:	Configuration
Format:	AT [cmds] &Mn [cmds]
Example:	AT &M2 H1 DT555-1212<CR>
Description:	Selects the active communications mode.
Command	Function
» &M0	Asynchronous command and data modes.
&M1	Asynchronous command, synchronous connect mode.
&M2	DTR dialing enabled, synchronous connect mode.
&M3	Manual dialing only, synchronous connect mode.
&M4	V.25bis bisynchronous command, synchronous connect mode.
&M5	V.25bis SDLC command, synchronous connect mode.
&M6	V.25bis asynchronous command, synchronous connect mode.

COMPRESSION
Type:	Configuration
Format:	AT %Cn
Example:	AT *EC0 %C1 *AP0<CR>
Description:	Selects data compression.
Command	Function
%C0	Data compression disabled.
» %C1	Data compression enabled.
%C2	Data compression enabled on transmit only.
%C3	Data compression enabled on receive only.

COMPRESSION
Type:	Register
Format:	AT S56=n
Example:	AT *EC0 S56=1 *AP0<CR>
Description:	Selects data compression.
Command	Function
S56=0	Data compression disabled.
S56=1	Data compression enabled on transmit only.
S56=2	Data compression enabled on receive only.
» S56=3	Data compression enabled.

COMPRESSION AND ERROR CORRECTION - CURRENT
Type:	Register
Format:	AT [cmds] S71? [cmds]
Example:	AT S71?<CR>
Default:	Read-only
Description:	Reports current compression and error correction protocols.
Value	Meaning
0	No compression or error correction protocols active.
1	Negotiation in progress.
2	MNP2 active.
3	MNP3 active.
4	MNP4 active.
5	MNP5 active.
6	V.42 active.
7	V.42bis active.

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	MNP mode only enabled.
\N3	MNP mode with fallback to normal mode enabled.
\N4	LAP-M mode only enabled.
\N5	LAP-M mode with fallback to normal mode enabled.
\N6	LAP-M mode with fallback to MNP enabled.
» \N7	LAP-M mode with fallback to MNP and normal modes enabled.

CONNECTION SPEED - CURRENT
Type:	Register
Format:	AT [cmds] S67? [cmds]
Example:	AT S67?<CR>
Default:	Read-only
Description:	Reports current connection speed.
Value	Meaning
1	300bps current speed.
3	1200bps current speed.
4	2400bps current speed.
5	4800bps current speed.
6	7200bps current speed.
7	9600bps uncoded current speed.
8	9600bps current speed.
9	12Kbps current speed.
10	14.4Kbps current speed.
11	16.8Kbps current speed.
12	19.2Kbps current speed.
13	21.6Kbps current speed.
14	24Kbps current speed.
15	26.4Kbps current speed.
16	28.8Kbps current speed.

CONNECTION SPEED LOWER LIMIT
Type:	Configuration
Format:	AT [cmds] %Ln [cmds]
Example:	AT %L3 %B14 \J0<CR>
Description:	Sets slowest allowed connection speed.
Command	Function
» %L0	No minimum speed.
%L2	Select 1200bps minimum speed.
%L3	Select 2400bps minimum speed.
%L4	Select 4800bps minimum speed.
%L5	Select 9600bps uncoded minimum speed.
%L6	Select 9600bps minimum speed.
%L7	Select 7200bps minimum speed.
%L8	Select 12Kbps minimum speed.
%L9	Select 14.4Kbps minimum speed.
%L11	Select 16.8Kbps minimum speed.
%L12	Select 19.2Kbps minimum speed.
%L13	Select 21.6Kbps minimum speed.
%L14	Select 24Kbps minimum speed.
%L15	Select 26.4Kbps minimum speed.
%L16	Select 28.8Kbps minimum speed.

CONNECTION SPEED LOWER LIMIT
Type:	Configuration
Format:	AT [cmds] S81=n [cmds]
Example:	AT %L3 S81=14 \J0<CR>
Description:	Sets slowest allowed connection speed.
Command	Function
S81=0	No minimum speed.
S81=3	Select 1200bps minimum speed.
S81=4	Select 2400bps minimum speed.
S81=5	Select 4800bps minimum speed.
S81=6	Select 7200bps minimum speed.
S81=7	Select 9600bps uncoded minimum speed.
S81=8	Select 9600bps minimum speed.
S81=9	Select 12Kbps minimum speed.
S81=10	Select 14.4Kbps minimum speed.
S81=11	Select 16.8Kbps minimum speed.
S81=12	Select 19.2Kbps minimum speed.
S81=13	Select 21.6Kbps minimum speed.
S81=14	Select 24Kbps minimum speed.
S81=15	Select 26.4Kbps minimum speed.
S81=16	Select 28.8Kbps minimum speed.

CONNECTION SPEED UPPER LIMIT
Type:	Configuration
Format:	AT [cmds] %Bn [cmds]
Example:	AT %L3 %B14 \J0<CR>
Description:	Sets fastest allowed connection speed.
Command	Function
%B0	Follow serial port speed.
%B1	Select 300bps maximum speed.
%B2	Select 1200bps maximum speed.
%B3	Select 2400bps maximum speed.
%B4	Select 4800bps maximum speed.
%B5	Select 9600bps uncoded maximum speed.
%B6	Select 9600bps maximum speed.
%B7	Select 7200bps maximum speed.
%B8	Select 12Kbps maximum speed.
» %B9	Select 14.4Kbps maximum speed.
%B11	Select 16.8Kbps maximum speed.
%B12	Select 19.2Kbps maximum speed.
%B13	Select 21.6Kbps maximum speed.
%B14	Select 24Kbps maximum speed.
%B15	Select 26.4Kbps maximum speed.
%B16	Select 28.8Kbps maximum speed.

CONNECTION SPEED UPPER LIMIT
Type:	Configuration
Format:	AT [cmds] S69=n [cmds]
Example:	AT %L3 S69=14 \J0<CR>
Description:	Sets fastest allowed connection speed.
Command	Function
S69=0	Follow serial port speed.
S69=1	Select 300bps maximum speed.
S69=3	Select 1200bps maximum speed.
S69=4	Select 2400bps maximum speed.
S69=5	Select 4800bps maximum speed.
S69=6	Select 7200bps maximum speed.
S69=7	Select 9600bps uncoded maximum speed.
S69=8	Select 9600bps maximum speed.
S69=9	Select 12Kbps maximum speed.
» S69=10	Select 14.4Kbps maximum speed.
S69=11	Select 16.8Kbps maximum speed.
S69=12	Select 19.2Kbps maximum speed.
S69=13	Select 21.6Kbps maximum speed.
S69=14	Select 24Kbps maximum speed.
S69=15	Select 26.4Kbps maximum speed.
S69=16	Select 28.8Kbps maximum speed.

CTS SIGNAL
Type:	Configuration
Format:	AT [cmds] &Rn [cmds]
Example:	AT &R0<CR>
Description:	Selects the function of the CTS signal.
Command	Function
&R0	CTS normal.
» &R1	CTS forced high.
&R2	CTS follows CD.
&R9	CTS follows RTS.

DISCONNECT BUFFER DELAY
Type:	Configuration
Format:	AT [cmds] %Dn [cmds]
Example:	AT %D0<CR>
Default:	0
Range:	0-255
Unit:	1 second
Description:	Configures how long the modem will wait to disconnect if there is data in the transmit or receive buffers.

DISCONNECT BUFFER DELAY
Type:	Register
Format:	AT [cmds] S62=n [cmds]
Example:	AT S62=0<CR>
Default:	0
Range:	0-255
Unit:	1 second
Description:	Configures how long the modem will wait to disconnect if there is data in the transmit or receive buffers.

DISCONNECT ON LOSS OF CURRENT
Type:	Configuration
Format:	AT [cmds] *LCn [cmds]
Example:	AT*LC0<CR>
Description:	Causes the modem to disconnect if the telephone line’s current drops.
Command	Function
*LC0	Do not disconnect on loss of current.
*LC1	Disconnect after 8ms if current is lost.
» *LC2	Disconnect after 90ms if current is lost.

DISCONNECT RESET
Type:	Configuration
Format:	AT [cmds] *ROn [cmds]
Example:	AT*RO0<CR>
Description:	Selects whether the modem will reset on disconnect.
Command	Function
» *RO0	Modem will not reset on disconnect.
*RO1	Modem will reset on disconnect.

DISPLAY STORED NUMBERS
Type:	Immediate
Format:	AT [cmds] *ND [cmds]
Example:	AT*CN3,555-1212 *ND<CR>
Description:	Displays all stored phone numbers.

DSR SIGNAL
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Example:	AT &S0<CR>
Description:	Selects the function of the DSR signal.
Command	Function
» &S0	DSR forced high.
&S1	DSR normal.
&S2	DSR normal, except forced low on disconnect.
&S3	DSR follows OH.

EXTENDED RESULT CODES
Type:	Configuration
Format:	AT [cmds] \Vn [cmds]
Example:	AT \V1 %C1<CR>
Description:	Selects extended result codes.
Command	Function
» \V0	Extended result codes disabled.
\V1	Extended result codes enabled.

EXTENDED RESULT CODES
Type:	Configuration
Format:	AT [cmds] S82=n [cmds]
Example:	AT %L3 S82=4 \J0<CR>
Description:	Selects extended result codes.
Command	Function
» S82=0	Display DTE rate; extended result codes disabled.
S82=4	Display DCE rate; extended result codes enabled.
S82=8	Display DCE rate; extended result codes disabled.

FACTORY DEFAULTS
Type:	Immediate
Format:	AT &Fn
Example:	AT &F8<CR>
Default:	1
Range:	1-9
Description:	Loads factory defaults set n.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Example:	AT G1 &M0<CR>
Description:	Selects modem port flow control.
Command	Function
» \G0	Flow control disabled.
\G1	Flow control enabled.

FLOW CONTROL CHARACTER - XOFF FROM TERMINAL
Type:	Register
Format:	AT [cmds] S45=n [cmds]
Example:	ATS45=22<CR>
Default:	19
Range:	0-127
Unit:	ASCII
Description:	Sets the character the terminal sends to represent XOFF.

FLOW CONTROL CHARACTER - XON FROM TERMINAL
Type:	Register
Format:	AT [cmds] S44=n [cmds]
Example:	ATS44=20<CR>
Default:	17
Range:	0-127
Unit:	ASCII
Description:	Sets the character the terminal sends to represent XON.

FLOW CONTROL CHARACTER - XOFF TO TERMINAL
Type:	Register
Format:	AT [cmds] S50=n [cmds]
Example:	ATS50=23<CR>
Default:	19
Range:	0-127
Unit:	ASCII
Description:	Sets the character the modem sends to represent XOFF.

FLOW CONTROL CHARACTER - XON TO TERMINAL
Type:	Register
Format:	AT [cmds] S49=n [cmds]
Example:	ATS49=21<CR>
Default:	17
Range:	0-127
Unit:	ASCII
Description:	Sets the character the modem sends to represent XON.

FLOW CONTROL MODE
Format		AT [cmds] S54=n [cmds]
Example:		ATS54=35<CR>
Default:		33
Range:		0 - 123
Unit:		Bit-mapped
Description:		Controls flow control type and pass-through.
Bit	Value		Function
1, 0	00 » 01 10 11		Flow control disabled. Bidirectional XON/XOFF flow control enabled. CTS flow control by DCE enabled. Bidirectional CTS/RTS flow control enabled.
2	0		Not used.
3	» 0 1		Flow control disabled. Flow control enabled.
4	» 0 1		XON/XOFF signals trapped by local modem. XON/XOFF passed through local modem.
6, 5	00 » 01 10 11		Flow control by DCE disabled. XON/XOFF flow control by DCE enabled. RTS flow control by DCE enabled. RTS flow control by DCE enabled.

FLOW CONTROL TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
Example:	AT \Q5<CR>
Description:	Sets type of flow control used by modem.
Command	Function
\Q0	Flow control disabled.
» \Q1	Bidirectional XON/XOFF flow control enabled.
\Q2	CTS flow control by DCE enabled.
\Q3	Bidirectional CTS/RTS flow control enabled.
\Q4	Flow control by DCE disabled.
» \Q5	XON/XOFF flow control by DCE enabled.
\Q6	RTS flow control by DCE enabled.
\Q7	RTS flow control by DCE enabled.

FORCE RETRAIN
Type:	Immediate
Format:	AT [cmds] *RRn [cmds]
Example:	AT *RR14 O<CR>
Description:	Forces the modem to attempt to retrain to the selected speed.
Command	Function
*RR0	Attempt 2400bps speed.
*RR1	Attempt 4800bps speed.
*RR2	Attempt 7200bps speed.
*RR3	Attempt 9600bps speed.
*RR4	Attempt 12Kbps speed.
*RR5	Attempt 14.4Kbps speed.
*RR6	Attempt 16.8Kbps speed.
*RR7	Attempt 19.2Kbps speed.
*RR8	Attempt 21.6Kbps speed.
*RR9	Attempt 24Kbps speed.
*RR10	Attempt 26.4Kbps speed.
*RR11	Attempt 28.8Kbps speed.

HANG UP MODE
Type:	Configuration
Format:	AT [cmds] Hn [cmds]
Example:	AT H3 O<CR>
Description:	Selects how the modem will hang up.
Command	Function
» H2	Set hang up mode to normal on next ATH command.
H3	Set hang up mode to fast on next ATH command.

HELP SCREENS
Type:	Immediate
Format:	AT $H=xxxx
Example:	AT $H=MNP<CR>
Description:	Shows modem help screens. If a string is included as shown in the example, the modem will perform a search for the string; otherwise, the whole help section will be displayed.

INACTIVITY TIMER
Type:	Register
Format:	AT [cmds] \Tn [cmds]
Example:	AT\T20<CR>
Default:	0
Range:	0-255
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] S58=n [cmds]
Example:	AT S58=20<CR>
Default:	0
Range:	0-255
Unit:	1 minute
Description:	Sets the length of time that the modem does not receive information before it disconnects.

LEASED LINE BACKUP NUMBER
Type:	Register
Format:	AT [cmds] S35=n [cmds]
Example:	AT S35=3<CR>
Description:	Sets the memory location the modem will dial for DTR dialing and leased-line backup.

LEASED LINE BACKUP RECOVERY DELAY
Type:	Register
Format:	AT [cmds] S28=n [cmds]
Example:	ATS28=5<CR>
Default:	15
Range:	0-255
Unit:	1 minute
Description:	After leased line failure, modem attempts to reconnect after specified delay.

LEASED LINE BACKUP - RESTORAL OPTIONS
Type:	Configuration
Format:	AT [cmds] *DBn [cmds]
Example:	AT *DB0 D555-1212<CR>
Description:	Selects what will initiate the restoral of a leased line connection.
Command	Function
» *DB0	Modem will restore connection only when modem receives *LB or *LD.
*DB1	Modem will restore connection automatically.