UTA220, UTA220K modem/telephone/ISDN Settings and Configuration

Card Type	ISDN TA
Chip Set	Unidentified
I/O Options	25-pin serial ports (4), ISDN U interface via RJ-48 connector, power
ISDN Data Rate	128Kbps
ISDN Modulation Protocol	V.120, HDLC
Error Correction/Compression	Unidentified
Data Bus	External

CONNECTIONS
Function	Label		Function		Label
25-pin serial port 1		CN1		ISDN U interface (RJ-48)		CN5
25-pin serial port 2		CN2		Power		CN6
25-pin serial port 3		CN3		Power switch		SW1
25-pin serial port 4		CN4
Note: Serial ports 3 & 4 are optional, and not featured in standard version.

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
B1	Unidentified	On	B-channel 1 is active
B1	Unidentified	Off	B-channel 1 is inactive
B2	Unidentified	On	B-channel 2 is active
B2	Unidentified	Off	B-channel 2 is inactive
D	Unidentified	On	All B-channels are available
D	Unidentified	Blinking (single)	Connection is established on ISDN U interface
D	Unidentified	Blinking (double)	Communications are established with the switch
D	Unidentified	Off	Connection is not established on ISDN U interface
DP	Unidentified	On	D-channel is available for packet calls
DP	Unidentified	Off	D-channel is not available for packet calls
T	Unidentified	On	Unit is conducting a test
T	Unidentified	Off	Unit is not conducting a test
PW	Unidentified	On	Power is on
PW	Unidentified	Off	Power is off

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, E, O, V, Z

&R, &V, &Y, &Z

S Registers

S0, S1, S2, S3, S4, S5, S7, S10, S12, S25, S26

Note: See MHI Help File for full command documentation.

COMMUNICATIONS MODE
Type:	Configuration
Format:	AT [cmds] &Qn [cmds]
Description:	Selects communications mode options
Command	Mode
&Q0	Asynchronous mode, serial port speed follows connect speed.
&Q1	Synchronous connect mode; DTR disc delay.
&Q2	Synchronous connect mode; DTR dialing

DATA CARRIER DETECT (DCD)
Type:	Configuration
Format:	AT [cmds] &Cn [cmds]
Description:	Controls the behaviour of the CD signal.
Command		Function
í &C0		DCD forced high.
&C1		DCD normal.
&C2		DCD forced low on disconnect.

DATA SET READY (DSR)
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Selects DSR options
Command	Function
&S0	DSR forced high
&S1	DSR high only while modem is handshaking or connected, except in test modes

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
DS=n	Dial stored telephone number n
D;	Modem returned to on-line command mode after dialing. The semicolon can only be placed at the end of the dial command.

DTR AUTODIAL
Type:	Configuration
Format:	AT [cmds] &Ln [cmds]
Description:	Causes the TA to repeatedly dial the first stored number on high DTR until it connects.
Command		Function
í &L0		DTR autodialing disabled.
&L1		DTR autodialing enabled.

DTR SIGNAL
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Controls the behaviour of the DTR signal.
Command		Function
&D0		DTR forced high.
&D1		TA enters command mode when DTR goes low.
&D2		TA hangs up and returns to command mode on low DTR.
&D3		TA resets on low DTR.
&D9		TA dials first stored number on high DTR, hangs up and returns to command mode on low DTR.

EXTENDED RESULT CODES
Type:	Configuration
Format:	AT [cmds] Wn [cmds]
Description:	Enables/disables CARRIER/PROTOCOL result codes
Command	Function
í W0	CARRIER and PROTOCOL extended result codes are disabled.
W1	CARRIER and PROTOCOL extended result codes are enabled.

FACTORY DEFAULT PROFILE
Type:	Configuration
Format:	AT [cmds] &Fn [cmds]
Description:	Sets values in active profile to values found in the default profile
Command	Function
&F0	Load factory profile 0
&F1	Load factory profile 1
&F9	Reloads global profile

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

HOOK CONTROL
Type:	Immediate
Format:	AT [cmds] H [cmds]
Description:	Commands modem to go on-hook (hang up)

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports product ID
I1	Reports ROM checksum
I2	Tests and reports ROM checksum
I3	Reports revision information

RESTART NET
Type:	Configuration
Format:	AT [cmds] Z9 [cmds]
Description:	Restarts net

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

SELECT CALL PROGRESS RESULT CODES
Type:	Configuration
Format:	AT [cmds] Xn [cmds]
Description:	Enables selection of tone detection and associated result code format options
Command	Function
X0	Busy and dial tone detection disabled; result codes 0 - 4 enabled.
X1	Result codes 0 - 5 ,10 - 15, 17 - 19, 28, & 32 enabled.
X2	Result codes 0 - 5 ,10 - 15, 17 - 19, 28, & 32 enabled.
X3	Result codes 0 - 5 , 7, 10 - 15, 17 - 19, 28, & 32 enabled.
X4	Result codes 0 - 5 , 7, 10 - 15, 17 - 19, 28, & 32 enabled.

STORE ACTIVE PROFILE
Type:	Configuration
Format:	AT [cmds] &Wn [cmds]
Description:	Writes the values for the active profile into the non-volatile RAM
Command	Function
&W0	Write the active profile to stored profile 0
&W1	Write the active profile to stored profile 1
&W9	Stores global profile

TEST MODES
Type:	Immediate
Format:	AT [cmds] &Tn
Description:	Selects test options
Command	Function
&T0	End current test
&T1	Begin local analog loopback test
&T3	Begin local digital loopback test
&T8	Begin bilateral loopback test
&T9	Begin local terminal loopback test

ANSWER MODE
Type:	Configuration
Format:	AT [cmds] %A99=x [cmds]
Description:	Selects the mode the TA will use to answer calls
Command		Function
í %A99=N		Normal mode enabled
%A99=V		Voice mode enabled

DIAL MODE
Type:	Configuration
Format:	AT [cmds] %A97=x [cmds]
Description:	Selects what type of dialing the TA will use.
Command		Function
í %A97=E		Enbloc dialing enabled.
%A97=O		Overlap dialing enabled.

ECHO DISABLE
Type:	Configuration
Format:	AT [cmds] %A96=n [cmds]
Description:	Selects whether the TA will send a tone to disable the echo canceller.
Command		Function
í %A96=0		TA will not send echo canceller disable tone.
%A96=1		TA will send echo canceller disable tone.

FLOW CONTROL TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
Description:	Sets type of flow control used by modem
Command	Function
\Q0	Flow control disabled
\Q2	Unidirectional RTS/CTS flow control enabled
\Q3	Bi-directional RTS/CTS flow control enabled
\Q4	Bi-directional XON/XOFF flow control enabled
\Q5	Transparent XON/XOFF flow control enabled
\Q6	Unidirectional XON/XOFF flow control enabled

ORIGINATE MODE
Type:	Configuration
Format:	AT [cmds] %A98=x [cmds]
Description:	Selects the mode the TA will use to originate calls
Command		Function
í %A98=N		Normal mode enabled
%A98=V		Voice mode enabled

PROTOCOL
Type:	Configuration
Format:	AT [cmds] %A2=n [cmds]
Description:	Sets the protocol that the TA uses for rate adaptation.
Command		Function
%A2=0		TA will use clear channel mode.
%A2=1		TA will use TLink.
í %A2=2		TA will use V.120 protocol.
%A2=3		TA will use Bonding mode

RESTART
Type:	Immediate
Format:	AT [cmds] %Z1 [cmds]
Description:	Restarts UTA

TRANSMISSION SPEED
Type:	Configuration
Format:	AT [cmds] %A4=n [cmds]
Description:	Sets the transmission speed of the TA.
Command		Function
í %A4=0		Transmission speed is 64Kbps.
%A4=1		Transmission speed is 56Kbps.

V.120 FRAME SELECTION
Type:	Configuration
Format:	AT [cmds] %E9=n [cmds]
Description:	Selects frame usage
Command		Function
%E9=0		I Frames enabled
í %E9=1		UI Frames enabled

V.120 PROTOCOL
Type:	Configuration
Format:	AT [cmds] %E7=n [cmds]
Description:	Sets communications mode
Command		Function
%E7=0		Transparent to all bits (SYNC/ASYNC) according to &Q
í %E7=1		Protocols enabled (SDLC)

V.120 RECEIVE FRAME SIZE
Type:	Configuration
Format:	AT [cmds] %E1=n [cmds]
Default:	260
Range:	1 - 260
Unit:	1 byte
Description:	Sets the maximum size of a received V.120 frame.

V.120 TRANSMIT FRAME SIZE
Type:	Configuration
Format:	AT [cmds] %E0=n [cmds]
Default:	260
Range:	1 - 260
Unit:	1 byte
Description:	Sets the maximum size of a transmitted V.120 frame.

V.120 TRANSMIT TIMER
Type:	Configuration
Format:	AT [cmds] %E3=n [cmds]
Default:	5
Range:	1 - 255
Unit:	Unidentified
Description:	Sets the V.120 T200 transmission timer.

V.120 WINDOW SIZE
Type:	Configuration
Format:	AT [cmds] %E2=n [cmds]
Default:	8
Range:	1 - 127
Unit:	Unidentified
Description:	Sets the size of the V.120 window.

X.25 AUTO-ANSWER
Type:	Configuration
Format:	AT [cmds] %B97=x [cmds]
Description:	Sets whether the TA will auto-answer an incoming X.25 virtual call.
Command		Function
%B97=D		Auto-answer disabled.
í %B97=E		Auto-answer enabled.

X.25 CALL CHARGING
Type:	Configuration
Format:	AT [cmds] %B10=n [cmds]
Description:	Sets the type of call charging for X.25.
Command		Function
í %B10=0		X.25 will use normal call charging.
%B10=1		X.25 will use reverse call charging.

X.25 CLOSED USER GROUP
Type:	Configuration
Format:	AT [cmds] %B8=n [cmds]
Description:	Selects the type of Closed User Group used for X.25.
Command		Function
í %B8=0		CUG not used.
%B8=1		Basic CUG used.
%B8=2		CUG with outgoing access only used.
%B8=3		CUG will full access used.

X.25 CLOSED USER GROUP ID
Type:	Configuration
Format:	AT [cmds] %B9=nnnn [cmds]
Default:	0000
Unit:	ASCII
Description:	Sets the ID for the X.25 CUG.

X.25 CODE - INCOMING
Type:	Read-only
Format:	AT [cmds] %B16 [cmds]
Description:	Stores the result code for incoming X.25 virtual calls.
Value		Meaning
0		Call was not redirected.
1		Station was busy.
9		Station was out of order.
15		Call was redirected.

X.25 CODE - OUTGOING
Type:	Read-only
Format:	AT [cmds] %B15 [cmds]
Description:	Stores the result code for outgoing X.25 virtual calls.
Value		Meaning
0		Call was not redirected.
1		Station was busy.
7		Call was within a hunt group.
9		Station was out of order.
15		Call was redirected.

X.25 D-BIT CONFIRMATION
Type:	Configuration
Format:	AT [cmds] %B7=n [cmds]
Description:	Enablbes/disables X.25 D-bit confirmation
Command		Function
í %B7=0		X.25 D-bit confirmation disabled.
%B7=1		X.25 D-bit confirmation enabled.

X.25 LOGICAL CHANNEL
Type:	Configuration
Format:	AT [cmds] %B6=n [cmds]
Default:	1
Range:	0 - 255
Unit:	Unidentified
Description:	Selects the logical channel for X.25 operation.

X.25 PACKET CALL TIMER
Type:	Configuration
Format:	AT [cmds] %B98=n [cmds]
Default:	180
Range:	0 - 600
Unit:	Unidentified
Description:	Sets the packet call timer for X.25 operation.

X.25 OUTGOING CALL ADDRESS
Type:	Configuration
Format:	AT [cmds] %B17=nnnn [cmds]
Default:	0
Range:	0 - 15
Unit:	Unidentified
Description:	Sets the address for an outgoing X.25 virtual call.

X.25 PVC
Type:	Configuration
Format:	AT [cmds] %B5=n [cmds]
Description:	Selects whether X.25 will use Permanent Virtual Channel.
Command		Function
í %B5=0		X.25 PVC disabled.
%B5=1		X.25 PVC enabled.

X.25 RECEIVE PACKET SIZE
Type:	Configuration
Format:	AT [cmds] %B2=n [cmds]
Default:	0
Range:	0, 7 - 10
Unit:	Unidentified
Description:	Sets the size of the received packets for X.25.

X.25 RECEIVE THROUGHPUT
Type:	Configuration
Format:	AT [cmds] %B11=n [cmds]
Description:	Sets the throughput for receiving X.25.
Command		Function
í %B11=0		Use network speed.
%B11=3		Throughput set to 75bps.
%B11=4		Throughput set to 110bps.
%B11=5		Throughput set to 300bps.
%B11=6		Throughput set to 600bps.
%B11=7		Throughput set to 1200bps.
%B11=8		Throughput set to 2400bps.
%B11=9		Throughput set to 4800bps.
%B11=10		Throughput set to 9600bps.
%B11=11		Throughput set to 19.2Kbps.
%B11=12		Throughput set to 48Kbps.
%B11=13		Throughput set to 64Kbps.

X.25 RECEIVE WINDOW SIZE
Type:	Configuration
Format:	AT [cmds] %B0=n [cmds]
Default:	0
Range:	0 - 8
Unit:	Unidentified
Description:	Sets the size of the X.25 receive window.

X.25 RESET CODE
Type:	Read-only
Format:	AT [cmds] %B20 [cmds]
Description:	Reports the reason for an X.25 reset.
Value		Meaning
0		Normal operation - no reset has occurred.
1		DTE caused reset.
2		Local procedure error occurred.
3		Destination address is incompatible.
4		Network is busy.
5		Remote procedure error occurred.
6		Cause of reset unknown.

X.25 RESET TIMER
Type:	Configuration
Format:	AT [cmds] %B99=n [cmds]
Default:	180
Range:	0 - 600
Unit:	Unidentified
Description:	Sets the reset timer for X.25 operation.

X.25 RPOA
Type:	Configuration
Format:	AT [cmds] %B14=xxxx [cmds]
Default:	0000
Range:	0 - 16
Unit:	Unidentified
Description:	Sets the RPOA for X.25.

X.25 TRANSMIT DELAY
Type:	Configuration
Format:	AT [cmds] %B19=n [cmds]
Default:	0
Range:	0 - 65535
Unit:	1ms
Description:	Sets the delay time for X.25 transmission.

X.25 TRANSMIT PACKET SIZE
Type:	Configuration
Format:	AT [cmds] %B3=n [cmds]
Default:	0
Range:	0, 7 - 10
Unit:	Unidentified
Description:	Sets the size of the transmitted packets for X.25.

X.25 TRANSMIT THROUGHPUT
Type:	Configuration
Format:	AT [cmds] %B12=n [cmds]
Description:	Sets the throughput for transmitting X.25.
Command		Function
í %B12=0		Use network speed.
%B12=3		Throughput set to 75bps.
%B12=4		Throughput set to 110bps.
%B12=5		Throughput set to 300bps.
%B12=6		Throughput set to 600bps.
%B12=7		Throughput set to 1200bps.
%B12=8		Throughput set to 2400bps.
%B12=9		Throughput set to 4800bps.
%B12=10		Throughput set to 9600bps.
%B12=11		Throughput set to 19.2Kbps.
%B12=12		Throughput set to 48Kbps.
%B12=13		Throughput set to 64Kbps.

X.25 TRANSMIT WINDOW SIZE
Type:	Configuration
Format:	AT [cmds] %B1=n [cmds]
Default:	0
Range:	0 - 8
Unit:	Unidentified
Description:	Sets the size of the X.25 transmit window.

X.25 USER DATA
Type:	Configuration
Format:	AT [cmds] %B18=xxxx [cmds]
Default:	0000
Range:	0 - 12
Unit:	Unidentified
Description:	Sets miscellaneous user data for X.25.

X.25 USER ID
Type:	Configuration
Format:	AT [cmds] %B13=xxxx [cmds]
Default:	0
Range:	0 - 16
Unit:	Unidentified
Description:	Sets the network user ID for X.25.

X.3 PAD ANCILLARY DEVICE
Type:	Configuration
Format:	AT [cmds] %L5=n [cmds]
Description:	Selects control of an ancillary device by the PAD.
Command		Function
%L5=0		Device disabled.
í %L5=1		Device enabled for data transfer only.
%L5=2		Device enabled for data transfer and command control.

X.3 PAD BREAK RESPONSE
Type:	Configuration
Format:	AT [cmds] %L7=n [cmds]
Description:	Sets action the PAD takes in response to receiving a BREAK from the DTE.
Command		Function
%L7=0		Response disabled
%L7=1		Send interrupt packet
%L7=2		Send reset packet
%L7=5		Send interrupt and indication of break packets
%L7=8		Escape from data state
%L7=21		Send interrupt and indication of break packets and set %L8 to 1

X.3 PAD - CARRIAGE RETURN PADDING
Type:	Configuration
Format:	AT [cmds] %L9=n [cmds]
Default:	0
Range:	0 - 255
Unit:	Unidentified
Description:	Sets the amount of padding after a carriage return.

X.3 PAD CARRIAGE RETURN TRANSLATION
Type:		Configuration
Format:		AT [cmds] %L13=n [cmds]
Default:		0
Range:		0 - 7
Description:		Selects when the PAD will add line feeds to carriage returns.
Bit	Value		Function
0	0 í 1		PAD will not add a line feed after a carriage return being sent to the DTE. PAD will add a line feed after a carriage return being sent to the DTE.
1	í 0 1		PAD will not add a line feed after a carriage return being received from the DTE. PAD will add a line feed after a carriage return being received from the DTE.
2	0 í 1		PAD will not add a line feed after a carriage return being echoed. PAD will add a line feed after a carriage return being echoed.

X.3 PAD CHARACTER DELETE
Type:	Configuration
Format:	AT [cmds] %L16=n [cmds]
Default:	8
Range:	0 - 127
Unit:	1 ASCII character
Description:	Sets the character used for character deletion.

X.3 PAD DATA EDITING
Type:	Configuration
Format:	AT [cmds] %L15=n [cmds]
Description:	Selects whether editing the data being transferred is allowed.
Command		Function
%L15=0		Editing disabled.
%L15=1		Editing enabled.

X.3 PAD DISCARD DATA
Type:	Configuration
Format:	AT [cmds] %L8=n [cmds]
Description:	Selects whether the PAD will deliver data to the DTE.
Command		Function
í %L8=0		Deliver data to the DTE.
%L8=1		Discard data.

X.3 PAD - DTE SPEED
Type:	Configuration
Format:	AT [cmds] %L11=n [cmds]
Description:	Sets the speed of operation for the serial port when using the X.25 PAD.
Command		Function
%L11=2		Set serial port speed to 300bps.
%L11=3		Set serial port speed to 1200bps.
%L11=4		Set serial port speed to 600bps.
%L11=12		Set serial port speed to 2400bps.
%L11=13		Set serial port speed to 4800bps.
%L11=14		Set serial port speed to 9600bps.
%L11=15		Set serial port speed to 19.2Kbps.
í %L11=16		Set serial port speed to 38.4Kbps.

X.3 PAD ECHO
Type:	Configuration
Format:	AT [cmds] %L2=n [cmds]
Description:	Selects whether PAD functions will echo incoming characters.
Command		Function
%L2=0		PAD echo disabled.
í %L2=1		PAD echo enabled.

X.3 PAD ECHO MASK
Type:		Configuration
Format:		AT [cmds] %L20=n [cmds]
Default:		248
Range:		0 - 255
Description:		Selects which control characters will be echoed.
Bit	Value		Function
0	í 0 1		Carriage return will be echoed. Carriage return will not be echoed.
1	í 0 1		Line feed will be echoed. Line feed will not be echoed.
2	í 0 1		The control characters VT, HT, and form feeds will be echoed. The control characters VT, HT, and form feeds will not be echoed.
3	0 í 1		Bells and backspaces will be echoed. Bells and backspaces will not be echoed.
4	0 í 1		The control character ENQ and escapes will be echoed. The control character ENQ and escapes will not be echoed.
5	0 í 1		The control characters ACK, NAK, STX, SOH, EOT, ETB, and ETX will be echoed. The control characters ACK, NAK, STX, SOH, EOT, ETB, and ETX will not be echoed.
6	0 í 1		Parameters 16, 17, and 18 will be echoed. Parameters 16, 17, and 18 will not be echoed.
7	0 í 1		All other control characters will be echoed. All other control characters will not be echoed.

X.3 PAD FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] %L12=n [cmds]
Description:	Selects flow control for the X.25 PAD.
Command		Function
%L12=0		Flow control disabled.
%L12=1		Flow control enabled.

X.3 PAD FORWARDING
Type:		Configuration
Format:		AT [cmds] %L3=n [cmds]
Default:		2
Range:		0 - 127
Description:		Selects which characters will be forwarded through the PAD.
Bit	Value		Function
0	í 0 1		Alphanumeric characters will not be forwarded. Alphanumeric characters (A-Z, a-z, 0-9) will be forwarded.
1	0 í 1		Carriage returns will not be forwarded. Carriage returns will be forwarded.
2	í 0 1		The control characters ENQ, ACK, bells, and escapes will not be forwarded. The control characters ENQ, ACK, bells, and escapes will be forwarded.
3	í 0 1		The control characters CAN, DC2, and delete will not be forwarded. The control characters CAN, DC2, and delete will be forwarded.
4	í 0 1		The control characters ETX and EOT will not be forwarded. The control characters ETX and EOT will be forwarded.
5	í 0 1		The control characters HT, LT, VT, and form feeds will not be forwarded. The control characters HT, LT, VT, and FF will be forwarded.
6	í 0 1		All other control characters will not be forwarded. All other control characters will be forwarded.

X.3 PAD IDLE TIME
Type:	Configuration
Format:	AT [cmds] %L4=n [cmds]
Default:	0
Range:	0 - 255
Unit:	Unidentified
Description:	Sets the PAD’s idle time delay.

X.3 PAD LINE DELETE
Type:	Configuration
Format:	AT [cmds] %L17=n [cmds]
Default:	24
Range:	0 - 127
Unit:	1 ASCII character
Description:	Sets the character used for line deletion.

X.3 PAD LINE DISPLAY
Type:	Configuration
Format:	AT [cmds] %L18=n [cmds]
Default:	18
Range:	0 - 127
Unit:	1 ASCII character
Description:	Sets the character used for line display.

X.3 PAD - LINE FEED PADDING
Type:	Configuration
Format:	AT [cmds] %L14=n [cmds]
Default:	0
Range:	0 - 255
Unit:	Unidentified
Description:	Sets the amount of padding after a line feed.

X.25 PAD - LINE WRAP
Type:	Configuration
Format:	AT [cmds] %L10=n [cmds]
Default:	0
Range:	0 - 255
Unit:	1 character
Description:	Sets the length of a line for the X.25 PAD.

X.3 PAD PAGE WAIT
Type:	Configuration
Format:	AT [cmds] %L22=n [cmds]
Default:	0
Range:	0 - 255
Unit:	Unidentified
Description:	Sets the amount of padding after a form feed.

X.3 PAD PARITY
Type:	Configuration
Format:	AT [cmds] %L21=n [cmds]
Description:	Selects the format of the parity bit.
Command		Function
í %L21=0		No parity.
%L21=3		Use setting in @P3.

X.3 PAD RECALL
Type:	Configuration
Format:	AT [cmds] %L1=n [cmds]
Default:	0
Range:	0, 1, 32 - 126
Unit:	ASCII
Description:	Sets the character for PAD recall. %L1=0 disables recall, %L1=1 selects DLE control character.

X.3 PAD SERVICE SIGNALS
Type:	Configuration
Format:	AT [cmds] %L6=n [cmds]
Description:	Selects which PAD service signals will be sent to the user.
Command		Function
%L6=0		No signals will be sent.
%L6=1		All signals except prompt will be sent.
%L6=5		All signals will be sent.

X.3 PAD SERVICE SIGNAL DESTINATION
Type:	Configuration
Format:	AT [cmds] %L19=n [cmds]
Description:	Selects where PAD service signals will be sent.
Command		Function
%L19=0		Signals will not be sent.
%L19=1		Signals will be sent to the printer.
í %L19=2		Signals will be sent to the monitor.

COMMAND SET
Type:	Configuration
Format:	AT [cmds] @P1=x [cmds]
Description:	Selects the command set that will be used.
Command		Function
@P1=A		AT command set enabled.
@P1=E		EIA-366 enabled
@P1=N		Command sets disabled.
@P1=VB		V.25bis command set enabled in Bisync mode.
@P1=VH		V.25bis command set enabled in HDLC mode.

CONTROL PORT SELECTION
Type:	Immediate
Format:	AT [cmds] >Cn [cmds]
Description:	Selects control port
Command		Function
>C0		Exits control mode
>C1		Control port 1 enabled
>C2		Control port 2 enabled
>C3		Control port 3 enabled
>C4		Control port 4 enabled

DATA LENGTH
Type:	Configuration
Format:	AT [cmds] @P4=n [cmds]
Description:	Selects the length of the data word.
Command		Function
@P4=7		7 bit word length.
í @P4=8		8 bit word length.

DATA PARITY
Type:	Configuration
Format:	AT [cmds] @P3=x [cmds]
Description:	Selects the format of the parity bit.
Command		Function
í @P3=E		Even parity.
@P3=M		Mark parity.
@P3=N		No parity.
@P3=O		Odd parity.

DATA STOP
Type:	Configuration
Format:	AT [cmds] @P6=n [cmds]
Description:	Selects the number of stop bits.
Command		Function
í @P6=0		One stop bit.
@P6=1		One and a half stop bits.
@P6=2		Two stop bits.

DIRECTORY NUMBER
Type:	Configuration
Format:	AT !N=<#>
Default:	0
Range:	0 - 20
Description:	Sets the directory number by port