ISU 128 modem/telephone/ISDN Settings and Configuration

Card Type	ISDN TA
Chip Set	Unidentified
I/O Options	Dial port
Transfer Rate	56/64Kbps x 2
Data Bus	External
ISDN Protocol	SAP, T-Link, V.120, PPP
Switch Type	5ESS, NI-1, DMS-100, NEC

CONNECTIONS
Function	Label		Function		Label
ENTER button		B1		3 button		B13
UP button		B2		6 button		B14
DOWN button		B3		9 button		B15
CANCEL button		B4		# button		B16
1 button		B5		RS-366 port for dialing		CN1
4 button		B6		RS-530A port		CN2
7 button		B7		V.35 port		CN3
* button		B8		Leased line out		CN4
2 button		B9		Switched line out		CN5
5 button		B10		120V AC power		CN6
8 button		B11		Power switch		SW1
0 button		B12

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
RS	Green	On	RTS signal is high
RS	Green	Off	RTS signal is low
CS	Green	On	CTS signal is high
CS	Green	Off	CTS signal is low
TD	Green	On	DSU is transmitting data
TD	Green	Off	DSU is not transmitting data
RD	Green	On	DSU is receiving data
RD	Green	Off	DSU is not receiving data
CD	Green	On	Carrier signal detected
CD	Green	Off	Carrier signal not detected
TR	Green	On	DTR signal is high
TR	Green	Off	DTR signal is low
SR	Green	On	DSR signal is high
SR	Green	Off	DSR signal is low

AUTO-ANSWER
Type:	Register
Format:	AT [cmds] S0=n [cmds]
Description:	Selects whether the TA can auto-answer incoming calls.
Command		Function
S0=0		Auto-answer disabled.
S0=1		Auto-answer enabled.
S0=2		Ignore all calls.

BIT-MAPPED REGISTER S14
Format:		AT [cmds] S14=n [cmds]
Default:		Unidentified
Range:		60
Description:		Controls command echo, result codes, and serial port speed locking.
Bit	Value		Function
1-0	00		Not used.
2	0 1		Command echo enabled. Command echo disabled.
3	0 1		Result codes enabled. Result codes disabled.
4	0 1		Result codes in numeric form. Result codes in verbose form.

BONDED CALL
Type:	Register
Format:	AT [cmds] S59=n [cmds]
Description:	Selects whether the TA will attempt to make a bonded call.
Command		Function
S59=3		Call bonding disabled.
S59=5		Call bonding enabled.

BONDED CALL - ANSWERING TIMEOUT
Type:	Register
Format:	AT [cmds] S44=n [cmds]
Default:	10
Range:	0 - 255
Unit:	1 second
Description:	Sets the time when answering a call that the TA will wait for the remote TA to send the bond negotiation before it disconnects.

BONDED CALL - CAPACITY TIMEOUT
Type:	Register
Format:	AT [cmds] S45=n [cmds]
Default:	5
Range:	0 - 255
Unit:	1 second
Description:	Sets the time that the TA will wait to agree with the remote TA on channel capacities before it disconnects.

BONDED CALL - EQUALIZATION TIMEOUT
Type:	Register
Format:	AT [cmds] S43=n [cmds]
Default:	50
Range:	0 - 255
Unit:	1 second
Description:	Sets the time that the TA will wait for the two channels of a bonded call to be equalized before it disconnects.

BONDED CALL - FRAME PATTERN TIMEOUT
Type:	Register
Format:	AT [cmds] S41=n [cmds]
Default:	10
Range:	0 - 255
Unit:	1 second
Description:	Sets the time that the TA will wait during the bond frame pattern before it disconnects.

BONDED CALL - ORIGINATION TIMEOUT
Type:	Register
Format:	AT [cmds] S40=n [cmds]
Default:	10
Range:	0 - 255
Unit:	1 second
Description:	Sets the time when originating a call that the TA will wait for the remote TA to send the bond negotiation before it disconnects.

BONDED CALL - SECOND CALL TIMEOUT
Type:	Register
Format:	AT [cmds] S42=n [cmds]
Default:	50
Range:	0 - 255
Unit:	1 second
Description:	Sets the time that the TA will wait for the second call of a bonded call to be completed before it disconnects.

CALL TYPE
Type:	Register
Format:	AT [cmds] S53=n [cmds]
Description:	Selects what type of call is to be made.
Command		Function
S53=0		Speech call.
S53=1		Audio call.
S53=2		56Kbps data call.
S53=3		64Kbps data call.

CD SIGNAL
Type:	Register
Format:	AT [cmds] S33=n [cmds]
Description:	Controls the behaviour of the CD signal.
Command		Function
S33=0		CD forced high.
S33=1		CD normal.
S33=2		CD forced low on disconnect.

CLOCK SOURCE
Type:	Register
Format:	AT [cmds] S76=n [cmds]
Description:	Selects where the TA derives the transmit clock.
Command		Function
S76=0		TA uses internal clock source.
S76=1		DTE generates clock source.

CLOCK SOURCE - ISDN
Type:	Register
Format:	AT [cmds] S51=n [cmds]
Description:	Selects where the TA derives the ISDN U clock.
Command		Function
S51=0		TA uses network as clock source.
í S51=1		TA generates clock source.
Note: Internal clock source may only be used in leased-line mode.

COMMAND SETS
Type:	Immediate
Format:	AT [cmds] S55=n [cmds]
Description:	Selects the command set that will be used.
Command		Function
S55=0		Command sets disabled.
S55=1		Dial port only enabled.
S55=2		AT command set enabled.
S55=3		V.25bis command set enabled.

CTS SIGNAL
Type:	Register
Format:	AT [cmds] S30=n [cmds]
Description:	Controls the behaviour of the CTS signal.
Command		Function
S30=0		CTS follows RTS.
S30=1		CTS forced high.

DATA LENGTH
Type:	Configuration
Format:	AT [cmds] S72=n [cmds]
Description:	Selects the length of the data word.
Command		Function
S72=0		8 bit word length.
S72=1		7 bit word length.

DATA PARITY
Type:	Configuration
Format:	AT [cmds] S73=n [cmds]
Description:	Selects the format of the parity bit.
Command		Function
S73=0		No parity.
S73=1		Odd parity.
S73=2		Even parity.

DATA STOP
Type:	Configuration
Format:	AT [cmds] S74=n [cmds]
Description:	Selects the number of stop bits.
Command		Function
S74=0		One stop bit.
S74=1		One and a half stop bits.
S74=2		Two stop bits.

DIAL PORT DELAY TIMER
Type:	Register
Format:	AT [cmds] S47=n [cmds]
Description:	Sets the amount of time the dial port will wait before assuming the user is finished entering the number to dial.
Command		Function
S47=0		Wait for EON signal only.
S47=10		Wait 1 second.
S47=20		Wait 2 second.
S47=50		Wait 5 second.
S47=100		Wait 10 second.
S47=200		Wait 20 second.

DSR SIGNAL
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Controls the behaviour of the DSR signal.
Command		Function
&S0		DSR forced high.
&S1		DSR normal.
&S2		DSR forced low when there is no connection.
&S3		DSR forced low in Dialup mode.

DSR SIGNAL
Type:	Register
Format:	AT [cmds] S32=n [cmds]
Description:	Controls the behaviour of the DSR signal.
Command		Function
S32=0		DSR forced high.
S32=1		DSR normal.
S32=2		DSR forced low when there is no connection.
S32=3		DSR forced low in Dialup mode.

DTE PORT
Type:	Register
Format:	AT [cmds] S35=n [cmds]
Description:	Selects which port is connected to the DTE.
Command		Function
S35=0		RS-232 port is connected to DTE.
S35=1		V.35 port is connected to DTE.

DTR SIGNAL
Type:	Register
Format:	AT [cmds] S34=n [cmds]
Description:	Controls the behaviour of the DTR signal.
Command		Function
S34=0		DTR forced high.
S34=1		TA enters command mode when DTR goes low.
S34=2		TA hangs up and returns to command mode when DTR goes low.
S34=4		TA hangs up on an incoming call and returns to command mode when DTR goes low.
S34=8		TA hangs up on an outgoing call and returns to command mode when DTR goes low.

ECHO TONE
Type:	Register
Format:	AT [cmds] S56=n [cmds]
Description:	Selects whether an echo tone will be used.
Command		Function
S56=0		Echo tone disabled.
S56=1		Echo tone enabled on answer only.
S56=2		Echo tone enabled on originate only.
S56=3		Echo tone enabled.

FLOW CONTROL TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
Description:	Selects the type of flow control that will be used.
Command		Function
\Q0		Flow control disabled.
\Q1		Bidirectional XON/XOFF flow control enabled.
\Q2		CTS flow control enabled.
\Q3		RTS/CTS flow control enabled.
\Q4		XON/XOFF flow control from TA enabled.

FLOW CONTROL TYPE
Type:	Register
Format:	AT [cmds] S75=n [cmds]
Description:	Selects the type of flow control that will be used.
Command		Function
S75=0		Flow control disabled.
S75=1		XON/XOFF flow control from DTE enabled.
S75=2		XON/XOFF flow control from TA enabled.
S75=3		RTS/CTS flow control enabled.
S75=12		Bidirectional XON/XOFF flow control enabled.

INCOMING CALLS
Type:	Register
Format:	AT [cmds] S58=n [cmds]
Description:	Selects which calls the TA will answer.
Command		Function
S58=0		All calls will be answered.
S58=1		Only calls from stored numbers will be answered.

LDN
Type:	Configuration
Format:	AT [cmds] _Nn [cmds]
Description:	Selects which LDN will be used.
Command		Function
_N0		Select LDN 1.
_N1		Select LDN 2.

LDN 1 SET
Type:	Configuration
Format:	AT [cmds] SS62=<#> [cmds]
Description:	Sets the first LDN.

LDN 2 SET
Type:	Configuration
Format:	AT [cmds] SS63=<#> [cmds]
Description:	Sets the second LDN.

LINE TYPE
Type:	Configuration
Format:	AT [cmds] &Ln [cmds]
Description:	Selects the type of line the TA is connected to.
Command		Function
&L0		Standard dial-out ISDN.
&L1		Leased-line ISDN.
&L2		Leased-line ISDN, dial backup enabled.

LINE TYPE
Type:	Configuration
Format:	AT [cmds] S50=n [cmds]
Description:	Selects the type of line the TA is connected to.
Command		Function
S50=0		Standard dial-out ISDN.
S50=1		Leased-line ISDN.

LOCAL SERIAL PORT SPEED
Type:	Configuration
Format:	AT [cmds] S71=n [cmds]
Description:	Selects the speed of the serial port.
Command		Function
S71=1		Selects 300bps speed.
S71=3		Selects 1200bps speed.
S71=6		Selects 2400bps speed.
S71=8		Selects 4800bps speed.
S71=11		Selects 9600bps speed.
S71=15		Selects 19.2Kbps speed.
S71=17		Selects 38.4Kbps speed.
S71=18		Selects 48Kbps speed.
S71=19		Selects 56Kbps speed.
S71=20		Selects 57.6Kbps speed.
S71=21		Selects 64Kbps speed.
S71=22		Selects 112Kbps speed.
S71=23		Selects 115.2Kbps speed.
S71=24		Selects 128.8Kbps speed.

LOOPBACK TEST
Type:	Register
Format:	AT [cmds] S57=n [cmds]
Description:	Selects what types of loopback tests the TA will use.
Command		Function
S57=0		Loopback testing disabled.
S57=1		TA will perform DDS latching loopback test.
S57=2		TA will perform V.54 loopback test.
S57=3		TA will perform V.54 and DDS latching loopback tests.

PROTOCOL
Type:	Register
Format:	AT [cmds] S54=n [cmds]
Description:	Selects what type of protocol the TA will use.
Command		Function
S54=1		TA will use clear channel.
S54=2		TA will use Bonding Mode 1.
S54=3		TA will use SAP.
S54=4		TA will use T-Link.
S54=6		TA will use V.120.
S54=9		TA will use 57.6Kbps asynchronous.
S54=11		TA will fall back to common protocol.

RESET TO FACTORY DEFAULTS
Type:	Immediate
Format:	AT [cmds] &Fn [cmds]
Description:	Resets the TA’s configuration to one of the factory default setups.
Command		Function
&F0		Resets to default configuration.
&F1		Resets to 56Kbps synchronous setup.
&F2		Resets to 64Kbps synchronous setup.
&F3		Resets to 112Kbps synchronous setup.
&F4		Resets to 128Kbps synchronous setup.
&F5		Resets to 128Kbps leased-line setup.
&F6		Resets to 128Kbps LDM Master setup.
&F7		Resets to 57.6Kbps asynchronous setup.
&F8		Resets to 115.2Kbps asynchronous setup.
&F10		Resets to V.32bis modem setup.
&F11		Resets to 57.6Kbps asynchronous setup with fallback.

RESULT CODES - SPEED
Type:	Register
Format:	AT [cmds] S22=n [cmds]
Description:	Selects whether CONNECT messages will display connect speed.
Command		Function
S22=0		Speed will not be displayed.
S22=224		Speed will be displayed.

RTS TO CTS DELAY
Type:	Configuration
Format:	AT [cmds] _Dn [cmds]
Description:	Selects the delay when CTS follows RTS.
Command		Function
_D0		Set delay to 1ms.
_D1		Set delay to 18ms.

RTS TO CTS DELAY
Type:	Register
Format:	AT [cmds] S31=n [cmds]
Description:	Selects the delay when CTS follows RTS.
Command		Function
S31=0		Set delay to 1ms.
S31=1		Set delay to 18ms.

SPID
Type:	Configuration
Format:	AT [cmds] _In [cmds]
Description:	Selects which SPID will be used.
Command		Function
_I0		Select SPID 1.
_I1		Select SPID 2.

SPID 1 SET
Type:	Configuration
Format:	AT [cmds] SS60=<#> [cmds]
Description:	Sets the first SPID.

SPID 2 SET
Type:	Configuration
Format:	AT [cmds] SS61=<#> [cmds]
Description:	Sets the second SPID.

STORE NUMBER IN MEMORY
Type:	Register
Format:	AT [cmds] SS8n=<#> [cmds]
Description:	Stores a number in memory location n.

SWITCH TYPE
Type:	Configuration
Format:	AT [cmds] _Sn [cmds]
Description:	Selects what type of switch the TA is connected to.
Command		Function
_S0		5ESS switch type.
_S1		DMS100 switch type.
_S2		National type 1 switch.
_S3		NEC switch type.

SWITCH TYPE
Type:	Configuration
Format:	AT [cmds] S52=n [cmds]
Description:	Selects what type of switch the TA is connected to.
Command		Function
S52=0		5ESS switch type.
S52=1		DMS100 switch type.
S52=2		National type 1 switch.
S52=3		NEC switch type.

SYNC/ASYNC MODE
Type:	Immediate
Format:	AT [cmds] S70=n [cmds]
Description:	Selects synchronous or asynchronous mode.
Command		Function
S70=0		Selects asynchronous mode.
S70=1		Selects synchronous mode.

V.25bis MODE
Type:	Register
Format:	AT [cmds] S46=n [cmds]
Description:	Selects what format will be used for V.25bis mode.
Command		Function
S46=0		Use asynchronous V.25bis.
S46=1		Use synchronous HDLC V.25bis.
S46=2		Use synchronous BISYNC V.25bis.