COMSTAR 14400 modem/telephone/ISDN Settings and Configuration

Card Type	Fax, Modem (asynchronous), Voice
Chip Set	Rockwell
I/O Options	Speakerphone, Voicemail
Maximum Data Rate	14.4Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	8-bit ISA
Fax Class	Class I & II
Data Modulation Protocol	Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis
Fax Modulation Protocol	ITU-T V.17, V.21CH2, V.27ter, V.29, V.33
Error Correction/Compression	MNP10, V.42bis

CONNECTIONS
Function	Label		Function		Label
Line out		CN1		Microphone		CN3
Line in		CN2		Speaker		CN4

USER CONFIGURABLE SETTINGS
Function	Label	Position
í Electret microphone	JP1	Pins 1 & 2 closed
Plantronics headset	JP1	Pins 2 & 3 closed
Dynamic microphone	JP1	Open
í Unpowered speaker, volume medium level	JP2	Closed
Powered speaker, volume low level	JP2	Open
Volume high level	JP2	Closed
í Unpowered speaker, volume medium level	JP3	Closed
Powered speaker, volume low level	JP3	Open
Volume high level	JP3	Open

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Controls auto-retrain mode and auto-fallback/fall-forward
Command	Function
í %E0	Auto-retrain disabled
%E1	Auto-retrain enabled
%E2	Auto-fallback/fall-forward enabled
%E3	Auto-retrain enabled with fast hang-up

BIT MAPPED REGISTERS
Register	Default
S14	Unidentified
S16	Unidentified
S21	Unidentified
S22	Unidentified
S23	Unidentified
S27	Unidentified
S28	Unidentified
S31	Unidentified
S40	Unidentified
S41	Unidentified

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Default:	3
Range:	1-9
Unit:	.1 second
Description:	Sends break to modem

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Description:	Configures action of break signal

CALLER ID
Type:	Configuration
Format:	AT [cmds] #CID=n [cmds]
Description:	Controls the Caller ID function
Command	Function
#CID=0	Caller ID disabled
#CID=1	Caller ID enabled

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

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Controls the type of connection the modem will operate in
Command	Function
\N0	Normal mode enabled
\N1	Direct mode enabled
\N2	Reliable mode enabled
í \N3	Auto-reliable mode enabled
\N4	LAP-M error correcting only enabled
\N5	MNP error correcting only enabled

DIAL
Type:	Immediate
Format:	AT [cmds] D<#> [cmds]
Description:	Dials telephone number according to any modifiers included in the string
Modifier	Function
L	Redials last number
P	Pulse dialing enabled
T	Tone dialing enabled
W	Dialing resumed following dial tone detection
,	Dialing paused for amount of time specified in S8 register
@	Modem waits for a ring-back signal followed by silence up to 5 second prior to executing the rest of the dial string.
R	Command recognized and not initiated
;	Modem returned to command mode after dialing.
!	Flash function initiated. Goes on-hook for amount of time specified in S29 register
S=(0-3)	Number in memory location &Zn dialed
^	Calling tone enabled, data mode only.

FLASH DIAL MODIFIER TIME
Type:	Register
Format	AT [cmds] S29=n [cmds]
Default:	0
Range:	0-255
Unit:	.01 second
Description:	Time the modem will go on-hook upon receiving the ! dial modifier in dial string.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Description:	Selects modem port flow control
Command	Function
í \G0	Flow control disabled
\G1	Flow control enabled

FLOW CONTROL
Type:	Register
Format:	AT [cmds] S39=n [cmds]
Description:	Select the type of flow control used
Command		Function
S39=0		Flow control disabled
í S39=3		Hardware flow control enabled
S39=4		Software flow control enabled
S39=5		Transparent software flow control enabled
S39=6		Both hardware and software flow control enabled

FLOW CONTROL CHARACTER - XOFF
Type:	Register
Format:	AT [cmds] S33=n [cmds]
Default:	19
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XOFF

FLOW CONTROL CHARACTER - XON
Type:	Register
Format:	AT [cmds] S32=n [cmds]
Default:	17
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XON

LINE SIGNAL LEVEL
Type:	Immediate
Format:	AT [cmds] %L [cmds]
Description:	Returns a value which indicates the received line signal level (-dBm)

LINE SIGNAL QUALITY
Type:	Immediate
Format:	AT [cmds] %Q [cmds]
Description:	Returns a value which indicates line signal quality

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type:	Configuration
Format:	AT [cmds] \An [cmds]
Description:	Sets the maximum transmittable block size
Command	Function
\A0	MNP block size is 64 characters
í \A1	MNP block size is 128 characters
\A2	MNP block size is 192 characters
\A3	MNP block size is 256 characters

MNP - STREAM/BLOCK MODE
Type:	Configuration
Format:	AT [cmds] \Ln [cmds]
Description:	Selects the transfer mode for MNP link
Command	Function
í \L0	Stream mode for MNP enabled
\L1	Block mode for MNP enabled

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

SPEAKERPHONE OPTIONS
Type:	Immediate/Configuration
Format:	AT [cmds] (see below) [cmds]
Description:	Configures the modem to voice mode
Command		Function
#CLS=8		Enable voice mode
#VLS=6		Enable speakerphone
A		Answer in-coming call
#VRN=0		To originate a call, then AT<#><enter>
HZ		Ends the call

SPEAKERPHONE SETTINGS
Type:	Configuration
Format:	AT [cmds] #SPK=x, y, z [cmds]
Description:	Controls the speakerphone settings
í Command		Function
í x=0		Microphone muted, speaker enabled
» x=1		Microphone and speaker enabled
í x=2		Microphone on maximum and speaker disabled
y=(0-16)		Speaker volume; increase the value to lower the volume.
» Y=5		Default setting for speaker
Z=(0-3)		Microphone sensitivity; increase the value for more sensitivity.
» Z=1		Default setting for microphone