...because we can't all be on the bleeding edge...





ISI3334/4, ISI3334/8, ISI3334/EC

MULTI-TECH SYSTEMS, INC.

ISI3334/4, ISI3334/8, ISI3334/EC

Card Type

Modem (asynchronous)

Processor Type

80186

Processor Speed

16MHz

Chip Set

Unidentified

Maximum Onboard Memory

256KB RAM

Maximum Data Rate

33.6Kbps x 4 (8 with daughtercard)

Maximum Fax Rate

14.4Kbps x 4 (8 with daughtercard)

Data Bus

16-bit ISA

Fax Class

Class II

Data Modulation Protocol

Bell 103A/212A

ITU-T V.22, V.22bis, V.32, V.32bis, V.34

AT&T V.32terbo

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Telephone line 1 out

J1

Telephone line 8 out

J8

Telephone line 2 out

J2

Header to daughterboard J9B

J9A

Telephone line 3 out

J3

Header to main board J9A

J9B

Telephone line 4 out

J4

Header to daughterboard J10B

J10A

Telephone line 5 out

J5

Header to main board J10A

J10B

Telephone line 6 out

J6

Header to daughterboard J11B

J11A

Telephone line 7 out

J7

Header to main board J11A

J11B

Note: J5 through J8 will not be active unless the daughtercard is installed.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Daughtercard is not installed

JP1

Pins 1 & 2 closed

Daughtercard is installed

JP1

Pins 2 & 3 closed

INTERRUPT SELECTION

Setting

JP2/A

JP2/B

JP2/C

JP2/D

JP2/E

JP2/F

JP2/G

JP2/H

JP2/I

2

Closed

Open

Open

Open

Open

Open

Open

Open

Open

í 3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

15

Open

Open

Open

Open

Open

Open

Open

Open

Closed

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

000h

On

On

On

On

On

On

On

On

008h

Off

On

On

On

On

On

On

On

010h

On

Off

On

On

On

On

On

On

018h

Off

Off

On

On

On

On

On

On

020h

On

On

Off

On

On

On

On

On

í 200h

On

On

On

On

On

On

Off

On

7D8h

Off

Off

On

Off

Off

Off

Off

Off

7E0h

On

On

Off

Off

Off

Off

Off

Off

7E8h

Off

On

Off

Off

Off

Off

Off

Off

7F0h

On

Off

Off

Off

Off

Off

Off

Off

7F8h

Off

Off

Off

Off

Off

Off

Off

Off

Note: A total of 256 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=1024, SW1/7=512, SW1/6=256, SW1/5=128, SW1/4=64, SW1/3=32, SW1/2=16, SW1/1=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, B, D, E, H, O, P, T, V, W, X, Y, Z

&D, &F, &G, &P, &S, &T, &W

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S30

Note: See MHI documentation for complete information.

Proprietary AT Command Set

ANSWER/ORIGINATE MODE

Type:

Configuration

Format:

AT [cmds] Rn [cmds]

Description:

Selects whether the modem will answer and originate calls in normal or reversed mode.

Command

Function

í R0

Modem will answer calls in answer mode and originate calls in originate mode.

R1

Modem will answer calls in originate mode and originate calls in answer mode.

AUTO-RELIABLE FALLBACK

Type:

Configuration

Format:

AT [cmds] $Fn [cmds]

Description:

Selects whether error correction can be disabled by a <CR> while handshaking.

Command

Function

$F0

Auto-reliable fallback disabled.

í $F1

Auto-reliable fallback enabled.

AUTO-RELIABLE TIME BUFFER CONFIGURATION

Type:

Configuration

Format:

AT [cmds] $An [cmds]

Description:

Controls the handling of incoming data during auto-reliable time period.

Command

Function

í $A0

Data is discarded.

$A1

Data is buffered.

BREAK LENGTH

Type:

Configuration

Format:

AT [cmds] S17=n [cmds]

Default:

250

Range:

0 - 250

Unit:

10 mS

Description:

Sets the length of the break signal the modem will send to the local serial port.

BUFFER SIZE

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Selects the modem’s transmit/receive buffer size.

Command

Function

í &B0

Normal buffer size.

&B1

Small buffer size.

CD SIGNAL

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Configures the behavior of the carrier detect signal.

Command

Function

&C0

CD forced high.

í &C1

CD normal.

&C2

CD forced high except during disconnect.

&C4

Modem resets on low CD.

CLEAR DOWN SIGNAL

Type:

Configuration

Format:

AT [cmds] &CDn [cmds]

Description:

Selects whether the modem will send a clear down signal when disconnecting.

Command

Function

í &CD0

Modem will not send clear down signal.

&CD1

Modem will send clear down signal.

COMMAND SET

Type:

Configuration

Format:

AT &Qn

Description:

Selects standard Hayes or custom command sets.

Command

Function

í &Q0

Multi-Tech custom command set enabled.

&Q1

Standard Hayes command set enabled.

COMPRESSION

Type:

Configuration

Format:

AT &En

Description:

Selects data compression.

Command

Function

&E14

Data compression disabled.

í &E15

Data compression enabled.

COMPRESSION MODE

Type:

Configuration

Format:

AT #Ln

Description:

Selects active compression protocols.

Command

Function

í #L0

MNP and V.42 negotiation enabled.

#L1

MNP negotiation enabled.

#L2

V.42 negotiation enabled.

#L3

V.42 enabled with no negotiation.

CTS SIGNAL

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Controls the behaviour of the CTS signal.

Command

Function

&R0

CTS normal.

í &R1

CTS forced high in command mode.

&R2

CTS forced low for 1 second during disconnect.

CTS SIGNAL

Type:

Configuration

Format:

AT [cmds] &RFn [cmds]

Description:

Selects the function of the CTS signal.

Command

Function

&RF0

CTS follows RTS.

í &RF1

CTS normal.

DATA LENGTH

Type:

Configuration

Format:

AT [cmds] $EBn [cmds]

Description:

Selects 10- or 11-bit mode.

Command

Function

í $EB0

Sets 10-bit mode.

$EB1

Sets 11-bit mode.

DATA PARITY

Type:

Configuration

Format:

AT [cmds] #Pn [cmds]

Description:

Sets the parity of the serial port.

Command

Function

í #P0

No parity.

#P1

Odd parity.

#P2

Even parity.

DATA PUMP TONE

Type:

Configuration

Format:

AT [cmds] $FCn [cmds]

Description:

Selects whether the data pump will transmit a 5 second 2100Hz tone.

Command

Function

$FC0

Data pump will not transmit tone.

í $FC1

Data pump will transmit tone.

DIAL STORED PHONE NUMBER

Type:

Immediate

Format:

AT [cmds] Na [Nb, Nc...]

Description:

Dials stored phone number(s). If the first number is busy, the modem will proceed to the next number in the list.

DISCONNECT SIGNAL DROP - PBX

Type:

Register

Format:

AT [cmds] S24=n [cmds]

Default:

20

Range:

0 - 255

Unit:

50 ms

Description:

Sets the time to drop the DTR, CTS, and DCD signals on disconnect when modem is connected to a PBX.

DISPLAY CONFIGURATION

Type:

Immediate

Format:

AT Ln

Description:

Displays modem configuration.

Command

Function

L5

Displays all settings.

L6

Displays the values of all S-registers.

L7

Displays extended parameters.

L8

Displays current diagnostics.

L9

Displays current signal strength.

L10

Displays current signal-to-noise ratio.

L11

Displays current noise level.

DISPLAY INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested about the modem.

Command

Function

I0

Displays product identification code.

I1

Displays firmware revision.

I2

Displays product name.

I3

Factory use only.

I5

Displays DSP chip version.

I9

Displays modem features.

DSR SIGNAL

Type:

Configuration

Format:

AT [cmds] &SFn [cmds]

Description:

Selects the function of the DSR signal.

Command

Function

í &SF0

DSR is set to CD.

&SF1

DSR is independent of CD.

DTR DIALING

Type:

Configuration

Format:

AT [cmds] $Dn [cmds]

Description:

Selects the DTR dialing function.

Command

Function

í $D0

DTR dialing disabled.

$D1

DTR dialing enabled.

DTR SIGNAL DROP

Type:

Register

Format:

AT [cmds] S25=n [cmds]

Default:

0

Range:

0 - 255

Unit:

100 ms

Description:

Sets the time to drop the DTR signal on disconnect. A value of 0 sets this to 50 mS.

ESCAPE SEQUENCE BUFFER SIZE

Type:

Register

Format:

AT [cmds] S34=n [cmds]

Default:

10

Range:

0-60

Unit:

1 byte

Description:

Sets the size of the buffer used to store entered commands during an escape sequence.

ESCAPE SEQUENCE RESPONSE

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Sets the response that the modem will give to an escape sequence.

%E4

OK response to command escape disabled.

í %E5

OK response to command escape enabled.

ESCAPE SEQUENCE TIMEOUT

Type:

Register

Format:

AT [cmds] S32=n [cmds]

Default:

20

Range:

0-255

Unit:

1 second

Description:

Sets the maximum amount of time the modem will wait for a <CR> while executing an escape sequence.

ESCAPE SEQUENCE TYPE

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Sets the type of command escape sequence the modem will recognise.

Command

Function

%E0

Command escape disabled.

í %E1

TIES escape (+++AT...)

%E2

<BREAK> AT method.

%E3

Both TIES and BREAK methods.

FALLBACK MODE

Type:

Configuration

Format:

AT [cmds] #Fn [cmds]

Description:

Sets direction of fallback.

Command

Function

#F0

Fallback disabled.

#F1

Fallback from 33.6Kbps to 2400bps as line quality degrades.

í #F2

Fallback from 2400bps to 33.6Kbps as line quality improves.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Selects flow control.

Command

Function

&E12

Flow control disabled.

í &E13

Flow control enabled.

FLOW CONTROL - ENQ/ACK

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Selects ENQ/ACK pacing.

Command

Function

í &E8

Enables ENQ/ACK pacing.

&E9

Disables ENQ/ACK pacing.

FLOW CONTROL IN NORMAL MODE

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Selects XON/XOFF flow control for non-error-correcting connections.

Command

Function

í &E10

XON/XOFF disabled for non-error-correcting connections.

&E11

XON/XOFF enabled for non-error-correcting connections.

FLOW CONTROL TYPE

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Sets type of flow control used by modem.

Command

Function

&E3

Flow control disabled.

í &E4

CTS/RTS flow control enabled.

&E5

XON/XOFF flow control enabled.

HANDSHAKE ATTEMPTS

Type:

Configuration

Format:

AT [cmds] #An [cmds]

Description:

Configures the initial handshake phase.

Command

Function

í #A0

Attempts speeds in order: 33.6Kbps, 31.2Kbps, 28.8Kbps, 24Kbps, 21.6Kbps, 19.2Kbps, 16.8Kbps, 14.4Kbps, 12Kbps, 9600bps, 4800bps, 2400bps, 1200bps, 300bps.

#A1

Attempts only 33.6Kbps.

#A2

Attempts speeds in order: 33.6Kbps, 31.2Kbps, 28.8Kbps, 24Kbps, 21.6Kbps, 19.2Kbps, 16.8Kbps, 14.4Kbps, 12Kbps, 9600bps, 4800bps.

#A3

Attempts speeds in order: 2400bps, 1200bps, 300bps.

HELP SCREENS

Type:

Immediate

Format:

AT $Hn

Description:

Shows modem help screens.

Command

Function

$H1

Shows help screen 1.

$H2

Shows help screen 2.

$H3

Shows help screen 3.

LOCAL SERIAL PORT SPEED

Type:

Configuration

Format:

AT [cmds] $SBnnn [cmds]

Description:

Sets serial port speed.

Command

Function

$SB300

Sets 300bps speed.

$SB1200

Sets 1200bps speed.

$SB2400

Sets 2400bps speed.

$SB4800

Sets 4800bps speed.

$SB9600

Sets 9600bps speed.

$SB19200

Sets 19.2Kbps speed.

$SB38400

Sets 38.4Kbps speed.

$SB57600

Sets 57.6Kbps speed.

í $SB115200

Sets 115.2Kbps speed.

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] $BAn [cmds]

Description:

Sets operation of serial port speed.

Command

Function

í $BA0

Serial speed locked at rate set by $SB.

$BA1

Serial speed follows connect speed, ignoring $SB.

LOGIN PASSWORD

Type:

Configuration

Format:

AT [cmds] #Ixxxx

Description:

Sets the login password to xxxx. The password must be between 6 and 10 characters, case sensitive. It defaults to MULTI-TECH.

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] &BSn [cmds]

Description:

Sets the maximum transmittable block size for data compression modes.

Command

Function

&BS0

Maximum block size is 64 characters.

í &BS1

Maximum block size is 256 characters in MNP mode and 128 characters in LAPM mode.

MAXIMUM LINE SPEED

Type:

Configuration

Format:

AT $MBnnn

Description:

Sets the maximum allowable data exchange rate attempted during handshake process.

Command

Function

$MB75

Sets V.23 (1200bps/75bps bi-directional).

$MB300

Sets 300bps maximum connect speed.

$MB1200

Sets 1200bps maximum connect speed.

$MB2400

Sets 2400bps maximum connect speed.

$MB4800

Sets 4800bps maximum connect speed.

$MB9600

Sets 9600bps maximum connect speed.

$MB14400

Sets 14.4Kbps maximum connect speed.

$MB19200

Sets 19.2Kbps maximum connect speed.

$MB28800

Sets 28.8Kbps maximum connect speed.

í $MB33600

Sets 33.6Kbps maximum connect speed.

REDIAL

Type:

Immediate

Format:

A:

Description:

Redials the last number dialed until it is no longer busy.

Note:

Do not precede this command with AT or follow it with <CR>.

REMOTE CONFIGURATION CHARACTER

Type:

Register

Format:

AT [cmds] S13=n [cmds]

Default:

37

Range:

0 - 127

Unit:

1 ASCII character

Description:

Defines the character that, when sent four times within the guard time set by S12, will notify the remote modem that a remote configuration session has been requested.

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE.

Command

Function

í Q0

Result codes enabled.

Q1

Result codes disabled.

Q2

Dumb answer mode enabled.

RETRANSMIT FAIL ACTION

Type:

Configuration

Format:

AT [cmds] $Rn [cmds]

Description:

Sets whether the modem gives up on a bad connection.

Command

Function

í $R0

Hang up after 12 failed retransmissions.

$R1

Do not hang up after 12 failed retransmissions.

SETUP PASSWORD

Type:

Configuration

Format:

AT [cmds] #Sxxxx

Description:

Sets the setup password to xxxx. The password must be between 6 and 10 characters, case sensitive. It defaults to MODEMSETUP.

TEST MODES

Type:

Immediate

Format:

AT [cmds] Un [cmds]

Description:

Performs test modes.

Command

Function

U0

Begin local analog loopback test in originate mode.

U1

Begin local analog loopback test in answer mode.

U2

Request remote digital loopback

U3

Begin local digital loopback.

TIME UNTIL OFF HOOK ON HIGH DTR

Type:

Register

Format:

AT [cmds] S37=n [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Sets the amount of time the modem will wait to pick up after the DTR signal goes high.

TIME UNTIL ON HOOK ON LOW DTR

Type:

Register

Format:

AT [cmds] S36=n [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Sets the amount of time the modem will wait to hang up after the DTR signal goes low.

TRELLIS CODING

Type:

Configuration

Format:

AT [cmds] #Tn [cmds]

Description:

Selects whether the modem will use trellis coding.

Command

Function

#T0

Trellis coding disabled.

í #T1

Trellis coding enabled.

V.32terbo CONTROL

Type:

Configuration

Format:

AT [cmds] #Vn [cmds]

Description:

Controls the V.32terbo protocol in answer mode.

Command

Function

í #V0

V.32terbo enabled.

#V1

V.32terbo disabled.

V.34 LINE PROBE

Type:

Configuration

Format:

AT [cmds] %DPn [cmds]

Description:

Selects whether the modem will read line probe information from the DSP chip during handshaking.

Command

Function

í %DP0

Line probe information not read during handshaking.

%DP1

Line probe information read during handshaking.

V.34 LINE PROBE - DISPLAY

Type:

Immediate

Format:

AT [cmds] %DFn [cmds]

Description:

Displays V.34 line probe data.

Command

Function

%DF0

Displays V.34 line probe data in graph format.

%DF1

Displays V.34 line probe data in table format.

V.34 - MAXIMUM LINE SPEED

Type:

Register

Format:

AT [cmds] S48=n [cmds]

Description:

Sets the maximum line speed the modem will attempt to connect at when in V.34 mode.

Command

Function

í S48=0

Modem will attempt to connect at 33.6Kbps.

S48=4

Modem will attempt to connect at 4800bps.

S48=9

Modem will attempt to connect at 9600bps.

S48=12

Modem will attempt to connect at 12Kbps.

S48=14

Modem will attempt to connect at 14.4Kbps.

S48=16

Modem will attempt to connect at 16.8Kbps.

S48=19

Modem will attempt to connect at 19.2Kbps.

S48=21

Modem will attempt to connect at 21.6Kbps.

S48=26

Modem will attempt to connect at 26.4Kbps.

S48=28

Modem will attempt to connect at 28.8Kbps.

S48=31

Modem will attempt to connect at 31.2Kbps.

S48=33

Modem will attempt to connect at 33.6Kbps.

V.42 FAILURE REACTION

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Sets the modem's reaction if it fails to connect with V.42.

Command

Function

&E0

Error correction disabled.

í &E1

Modem will fall back to normal mode.

&E2

Modem will not fall back to normal mode.

XOFF SEND

Type:

Configuration

Format:

AT [cmds] #Xn [cmds]

Description:

Selects how XOFF signal is sent.

Command

Function

í #X0

Single XOFF character are sent until the DTE responds.

#X1

Multiple XOFF characters are sent until the DTE responds.

XON/XOFF PASS-THROUGH

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Selects whether XON/XOFF signals are sent to remote modem.

Command

Function

í &E6

XON/XOFF signals trapped by local modem.

&E7

XON/XOFF passed through local modem.