CONNECTIONS
Purpose	Location	Purpose	Location
Line in	CN1	RS-232	CN4
Line out	CN2	Power switch	SW2
DC power	CN3

COMMAND SETS
Mode	SW1/1
» Enabled	On
Disabled	Off

LEASED LINE CARRIER TRANSMIT LEVEL ADJUSTMENT
Mode	SW1/2
» Disabled	On
Enabled	Off

COMMAND MODE
Mode	SW1/3	SW1/4
AT command set	Off	Off
Asynchronous V.25 command set	Off	On
Synchronous V.25 command set w/HDLC framing	On	Off
Synchronous V.25 command set w/character framing	On	On

MI/MIC
Mode	JP1	JP2
» Disabled	Pins 1 & 2 closed	Pins 1 & 2 closed
Enabled	Pins 2 & 3 closed	Pins 2 & 3 closed

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
HS	Red	On	Modem is operating at 4800bps or faster
HS	Red	Off	Modem is operating at slower than 4800bps
AA	Red	On	Auto-answer enabled
AA	Red	Off	Auto-answer disabled
AA	Red	Blinking	Line is ringing
CD	Red	On	CD signal is high
CD	Red	Off	CD signal is low
OH	Red	On	Modem is off-hook
OH	Red	Off	Modem is on-hook
RD	Red	On	Modem is receiving data
RD	Red	Off	Modem is not receiving data
SD	Red	On	Modem is transmitting data
SD	Red	Off	Modem is not transmitting data
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low
MR	Red	On	Power is on
MR	Red	Off	Power is off

COMMAND MODE OPTIONS
Format		AT [cmds] S94=n [cmds]
Example:		ATS94=40<CR>
Default:		0
Range:		0 - 15
Unit:		Bit-mapped
Description:		Sets various options for command set modes.
Bit	Value		Function
1, 0	» 00 01 10 11		Use AT command set. Use asynchronous V.25 command set. Use synchronous V.25 command set with HDLC framing. Use synchronous V.25 command set with character framing.
2	» 0 1		Addressed calling. Direct access calling.
3	» 0 1		Use ASCII character set. Use EBCDIC character set.

RESTART REQUEST ACKNOWLEDGEMENT TIME
Type:	Register
Format:	AT [cmds] S81=n [cmds]
Example:	ATS81=15<CR>
Default:	18
Range:	0-255
Unit:	10 seconds
Description:	Sets the time the transmitting modem will wait for acknowledgement of its restart request before it initiates a recovery.

RESTART REQUEST MAXIMUM
Type:	Register
Format:	AT [cmds] S80=n [cmds]
Example:	ATS80=8<CR>
Default:	1
Range:	0-255
Unit:	N/A
Description:	Sets the number of times a restart request can be retransmitted.

V.22 PROBE REJECT TIME
Type:	Register
Format:	AT [cmds] S97=n [cmds]
Example:	ATS97=15<CR>
Default:	30
Range:	15-70
Unit:	.1 second
Description:	Sets the time for which the modem will reject the V.22/V.22bis probe signal when in V.32 mode.

V.25 OPTIONS
Format		AT [cmds] S115=n [cmds]
Example:		ATS115=40<CR>
Default:		0
Range:		0 - 3
Unit:		Bit-mapped
Description:		Sets V.25 data mode and V.25 auto-answer mode.
Bit	Value		Function
0	» 0 1		Answer after two rings Answer after number of rings set in S0.
1	» 0 1		Select 7 data bits, even parity, and one stop bit. Select 8 data bits, no parity, and one stop bit.

RESET TO AT COMMAND SET
Type:	Immediate
Format:	RST
Example:	RST<CR>
Description:	Executes a cold reset and returns to AT command set.