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SNT12

DIGICOM SPA

SNT12

Card Type

ISDN, Modem

Chip Set

Unidentified

I/O Options

ISDN interface via RJ-45 connector, reset

ISDN Rate

128Kbps

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

ISDN Modulation Protocol

14.4Kbps

V.110, V.120, PPP

Data Modulation Protocol

ITU-T V.21, V.22, V.22bis,V.23, V.32, V.32bis, V.34, VFC

Fax Modulation Protocol

V.17, V.29, V.27ter

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I

Data Bus

16-bit ISA

CONNECTIONS

Function

Label

Function

Label

ISDN interface (RJ-45 connector)

CN1

Reset

P1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Transmission channel in high impedence mode

U4

Pins 2 & 3 closed

Transmit termination set to 100Ohm

U4

Pins 1 & 2 closed

í Receive channel in high impedence mode

U5

Pins 2 & 3 closed

Receive termination set to 100Ohm

U5

Pins 1 & 2 closed

ADDRESS SELECTION

Setting

DS1/1

DS1/2

COM1 (3F8h)

Off

Off

COM2 (2F8h)

Off

On

COM3 (3E8h)

On

Off

COM4 (2E8h)

On

On

INTERRUPT SELECTION

IRQ

DS1/3

DS1/4

DS1/5

DS1/6

DS1/7

DS1/8

IRQ3

On

Off

Off

Off

Off

Off

IRQ4

Off

On

Off

Off

Off

Off

IRQ5

Off

Off

On

Off

Off

Off

IRQ10

Off

Off

Off

Off

On

Off

IRQ11

Off

Off

Off

Off

Off

On

SUPPORTED COMMAND SET (DIGITAL)

Basic AT Commands

AT, A/

A, E, Q, V, W

&C, &Z

S Registers

S2, S3, S4, S12, S25

 

Note: See MHI Help File for full command documentation.

SUPPORTED COMMAND SET (ANALOG)

Basic AT Commands

AT, A/

A, B, E, H, M, O, Q, V, W, X, Y, Z

&C, &T, &V, &W, &Y, &Z

Extended AT commands

\A, \B, \G, \K, \N

%C, %E, %L

S Registers

S0, S1, S2, S3, S4, S5, S6 ,S7, S8, S10, S12, S18, S25, S26, S30, S32, S33

Special commands

+MS, )M

V.25bis commands

CIC, CRN, CRS, DIC, PRN

 

Note: See MHI Help File for full command documentation.

 

PROPRIETARY AT COMMAND SET (DIGITAL)

AUTO-MODE DETECTION

Type:

Configuration

Format:

AT [cmds] Nn [cmds]

Description:

Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.

Command

Originate Mode

N0

Connection established at speed specified by register S37. If the DTE rate is 38.4Kbps or higher, the speed is negotiated at 38.4Kbps

í N1

Connection established at speed of last connection. If greater than 19.2Kbps, the connection will be established at 19.2Kbps

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Command

Mode

&Q0

Buffered asynchronous mode

&Q4

Direct mode (V.110)

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode options

Command

Mode

&M0

Buffered asynchronous mode

&M4

Direct mode (V.110)

CONFIGURATION PROFILES

Type:

Immediate

Format:

AT [cmds] &V [cmds]

Description:

Displays active and stored configuration profiles

Command

Function

&V0

Displays the active profile, the 0 and 1st user configuration and the first four stored numbers

&V1

Displays the 2nd and 3rd user configuration

&V2

Displays every stored phone number

&V3

Displays the supplementary services profile

DATA COMPRESSION

Type:

Immediate

Format:

AT [cmds] &Un

Description:

Selects data compression

Command

Function

í &U0

Data compression disabled

&U1

Error corrected data compression enabled (V.120)

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

í &S0

DSR forced high

&S1

DSR high only while modem is handshaking or connected

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Function

í&D0

DTR override

&D1

DTR toggle causes online command mode

&D2

Normal DTR operations

&D3

Resets on receipt of DTR

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 (0-7)

DT

Call switched to digital interface

DP

Call switched to analog interface

DIAL USING ANALOG MODEM

Type:

Configuration

Format:

AT [cmds] Pn [cmds]

Description:

When inserted in the dial string, modem makes the call using the analog modem section

DIAL USING DIGITAL MODEM

Type:

Configuration

Format:

AT [cmds] Tn [cmds]

Description:

When inserted in the dial string, modem makes the call using the digital modem section

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

&F0

Load active profile the factory profile 0

&F1

Load active profile the factory profile 1

&F2

Load active profile the factory profile 2

&F3

Load active profile the factory profile 3

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. Modem does not transmit XON/XOFF characters received from computer to remote

&K8

Unidirectional XON/XOFF flow control enabled

&K12

XON/XOFF flow control enabled. Modem transmits XON/XOFF characters received from computer to remote

&K16

V.110 XON/XOFF flow control enabled. Flow control between local and remote modems only. Flow control between modem and computer is disabled.

&K20

V.110 XON/XOFF flow control enabled.

HOOK CONTROL

Type:

Immediate

Format:

AT [cmds] Hn [cmds]

Description:

Hangs up the TA from the ISDN network

Command

Function

H0

Modem commanded to go on-hook (hang-up)

ON-LINE

Type:

Immediate

Format:

AT [cmds] On [cmds]

Description:

Controls on-line command (data transmission) state options.

Command

Function

O0

On-line command mode with no retraining enabled

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports model

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports revision level

I4

Display central office

RESTORE PROFILE ON POWER-UP

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Restores a selected profile into the active profile on power-up (hard reset)

Command

Function

&Y0

Restore profile 0 on power-up

&Y1

Restore profile 1 on power-up

&Y2

Restore profile 2 on power-up

&Y3

Restore profile 3 on power-up

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

Result codes 0 - 4 enabled.

X1

Extended result codes enabled.

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Zn [cmds]

Description:

Restores modem profiles previously saved in non-volatile RAM using the &W command.

Command

Function

Z0

Restore setting 0

Z1

Restore setting 1

Z2

Restore setting 2

Z3

Restore setting 3

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

&W2

Write the active profile to stored profile 2

&W3

Write the active profile to stored profile 3

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 B1 channel local digital loopback

EXTENDED AT COMMAND SET (DIGITAL)

B-CHANNEL PROTOCOL

Type:

Configuration

Format:

AT [cmds] %A2=n [cmds]

Description:

Determines rate adaptation protocol on B-channel

Command

Function

í %A2=2

V.110

%A2=3

V.120

B-CHANNEL SELECTION

Type:

Configuration

Format:

AT [cmds] %A3=n [cmds]

Description:

Selects data channel

Command

Function

í %A3=2

B1 channel selected. If busy select B2 channel

%A3=3

B1 channel selected. If busy initiate hang-up

%A3=4

B2 channel selected. If busy select B1 channel

%A3=5

B2 channel selected. If busy initiate hang-up

CALLER ID

Type:

Configuration

Format:

AT [cmds] *In [cmds]

Description:

Controls the Caller ID function

Command

Function

*I0

Caller ID disabled

*I1

Caller ID enabled

COMMAND SET

Type:

Configuration

Format:

AT [cmds] %Vn [cmds]

Description:

Selects the command set

Command

Function

%V0

AT command set

%V1

Asynchronous V.25bis command set

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

%C1

MNP5 enabled

DIGITAL OR ANALOG MODEM SELECTION

Type:

Configuration

Format:

AT [cmds] $Mn [cmds]

Description:

Selects digital or analog for preliminary setup

Note:

If the call is being made using the digital section, the remote user is ISDN. If the call is being made using the analog section, the remote user is PSTN

Command

Function

$M0

Computer interface is switched to the digital modem section

$M1

Computer interface is witched to the analog modem section

MULTISUBSCRIBER NUMBER

Type:

Configuration

Format:

AT [cmds] *Mn [cmds]

Description:

Permits the association of a maximum of 8 consecutive numbers to a BRI access of the national plan number

Command

Function

í *M0

MSN disabled

*M1

MSN enabled

PROGRAMMING PROMPT

Type:

Configuration

Format:

AT [cmds] $Pn [cmds]

Description:

Enables/disables programming prompt

Command

Function

í $P0

Interface prompt disabled

$P1

Interface prompt enabled

RESET

Type:

Configuration

Format:

AT [cmds] %Z1 [cmds]

Description:

Master reset and load the configuration specified by the &Y command

STORE CALLER ID NUMBER

Type:

Configuration

Format:

AT [cmds] !N1=n [cmds]

Description:

Stores telephone number n for the caller ID function. !N1=? displays the stored telephone number.

STORE MULTISUBSCRIBER NUMBER

Type:

Configuration

Format:

AT [cmds] !N2=n [cmds]

Description:

Stores own telephone number n for the MSN. !N2=? displays the stored multisubscriber number.

STORE SUBADDRESS NUMBER

Type:

Configuration

Format:

AT [cmds] !N3=n [cmds]

Description:

Stores subaddress field with a maximum of four numbers. !N3=? displays the stored subaddress field.

SUBADDRESS

Type:

Configuration

Format:

AT [cmds] *Sn [cmds]

Description:

Identifies address of called modem

Command

Function

í *S0

Subaddress function disabled

*S1

Subaddress function enabled

S(status) REGISTERS (DIGITAL)

AUTO ANSWER RING COUNT

Type:

Register

Format

AT [cmds] S0=n [cmds]

Range:

1-5

Unit:

1 ring

Description:

Sets the number of rings allowed before the modem automatically goes off-hook

Note: If S0=0, automatic-answering is disabled. The A command must be used to go off-hook.

BACKSPACE CHARACTER

Type:

Register

Format

AT [cmds] S5=n [cmds]

Range:

0-127

Unit:

ASCII

Description:

Selects a character used for backspace <BS>

BIT-MAPPED REGISTER S31

Type:

Register

Format:

AT [cmds] S31=n [cmds]

Range:

0-255

Description:

Selects V.25bis command mode

Bit

Value

Function

1,0

í 0

V.25bis asynchronous mode

2 - 6

0

Reserved

7

í 0

1

V.25bis disabled

V.25bis enabled

DCE LINE SPEED

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

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

Command

Function

S37=0, 255

Speed of last connection

S37=5

1200bps

S37=6

2400bps

S37=15

4800bps

S37=16

7200bps

S37=17

9600bps

S37=18

12.0Kbps

S37=19

14.4Kbps

S37=27

19.2Kbps

S37=50

38.4Kbps (asynchronous only)

FLOW CONTROL

Type:

Register

Format:

AT [cmds] S49=n [cmds]

Description:

Displays the value of the &K command, which specifies the DTE flow control setting

Command

Function

S49=0

No DTE flow control

S49=3

RTS/CTS flow control enabled

S49=4

Bi-directional XON/XOFF flow control enabled

S49=5

Transparent bi-directional XON/XOFF flow control enabled

NO CARRIER TIME-OUT

Type:

Register

Format

AT [cmds] S7=n [cmds]

Range:

1-255

Unit:

1 second

Description:

Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls.

POINTER FOR CALL-BACK AND AUTOLOGON

Type:

Register

Format

AT [cmds] S34=n [cmds]

Range:

0-20, 255

Unit:

Unidentified

Description:

Establishes the memory location accessed to initiate autologon or callback procedures. 20 will cause the phonebook to scroll. 255 disables function

RING COUNT

Type:

Register

Format

AT [cmds] S1 [cmds]

Range:

1-5

Unit:

1 ring

Description:

Counts the number of ring-cycles the modem receives

Note: S1 is reset to 0 if no ring is detected within an eight-second window.

PROPRIETARY AT COMMAND SET (ANALOG)

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

&M0

Asynchronous mode

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.

&Q4

Auto-synchronous mode

&Q5

Error correction mode

&Q6

Buffered asynchronous mode

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for data calls

Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.

Command

Protocol

B0

ITU-T V.22 at 300 or 1200bps

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

í &S0

DSR forced high

&S1

DSR high only while modem is handshaking or connected

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Function

&D0

DTR override

&D1

DTR toggle causes online command mode

í &D2

Normal DTR operations

&D3

Resets on receipt of DTR

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

DL

Re-dial last number

DP

Dial using analog modem section

DS=n

Dial stored telephone number n

DT

Dial using digital modem section

DW

Dialing resumed following dial tone detection

D!

Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.

D@

Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by 5 seconds of silence

D,

Dialing paused for amount of time specified in S8 register

D;

Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

&F0

Factory default profile 0

&F1

Factory default profile 1

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

í &K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Transparent XON/XOFF flow control enabled

&K6

RTS/CTS & XON/XOFF flow control enabled

GUARD TONE

Type:

Configuration

Format:

AT [cmds] &Gn [cmds]

Description:

Commands the modem to transmit a guard tone in V.22/V.22bis

Note: Used primarily for international data transmission

Command

Function

í &G0

Guard tone disabled

&G2

1800Hz guard tone enabled

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports maximum line speed

I1

Reports product type

I2

Reports checksum firmware

I3

Reports product name

I4

Reports firmware release

I5

Reports active Country Code

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L1

Low volume setting

L2

Medium volume setting

L3

Highest volume setting

EXTENDED AT COMMAND SET (ANALOG)

ABORT KEY CONTROL

Type:

Configuration

Format:

AT [cmds] %Kn [cmds]

Description:

Enable/disable abort key during dialing

Command

Function

%K0

Abort key during dialing enabled

%K1

abort key during dialing disabled

DSR WINK

Type:

Immediate

Format:

AT [cmds] %S [cmds]

Description:

Returns a value which indicates line signal quality

Command

Function

%S0

Data set ready in accordance with &S

%S1

When DTR is forced high, and the modem is goes off-hook, DTR is off for 1sec.

LINE SIGNAL QUALITY

Type:

Immediate

Format:

AT [cmds] %Q [cmds]

Range:

000-127

Unit:

Unidentified

Description:

Returns a value which indicates line signal quality. Values 000-007 indicate good line quality. Values 008-127 indicate poor line quality, disturbed signal

MAKE BUSY

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Description:

Make busy (off-hook) if DTR lost

Command

Function

í %B0

Make busy disabled

%B1

Make busy enabled if S25=0. When DTR is low, the modem goes off-hook

SPECIAL COMMANDS (ANALOG)

MNP10 - LINK NEGOTIATION

Type:

Configuration

Format:

AT [cmds] *Hn [cmds]

Description:

Sets the speed at which MNP10 link negotiation will occur

Command

Function

*H0

Link will be negotiated at highest possible speed

*H1

Link will be negotiated at 1200bps

MNP - EXTENDED SERVICES

Type:

Configuration

Format:

AT [cmds] -Kn [cmds]

Description:

Selects MNP extended services

Command

Function

-K0

MNP extended services disabled

-K1

MNP extended services enabled if V.42bis mode was enabled

V.25bis COMMANDS (ANALOG)

LOCAL CONFIGURATION

Type:

Immediate

Format:

CNLn

Description:

Any AT command may be entered as a parameter of this command; V.25bis escape sequence

REQUEST LIST OF STORED NUMBERS

Type:

Immediate

Format:

RLN

Description:

Requests the list of phone numbers stored in memory

S(status) REGISTERS (ANALOG)

TRANSMISSION LEVEL - FAX

Type:

Register

Format:

AT [cmds] S92=n [cmds]

Range:

3-15

Unit:

-1 dBm

Description:

Sets the signal level for transmission while in fax mode

TRANSMISSION LEVEL - LEASED-LINE

Type

Register or Configuration

Format

AT [cmds] S91=n [cmds]

Range

3-15

Unit

-1 dBm

Description

Sets the signal level for transmission over leased-lines

EXTENDED RESULT CODES

Type:

Register

Format

AT [cmds] S95=n [cmds]

Range:

0-255

Unit:

Bit-mapped

Description:

Works in combination with the Wn command to enable extended result codes.

Bit

Value

ATW0

ATW1

ATW2

0

0

1

CONNECT result code reports DTE speed.

CONNECT result code reports line speed

PROTOCOL result codes enabled. CONNECT result code reports DTE speed.

PROTOCOL result codes enabled. CONNECT result code reports line speed.

CONNECT result code reports line speed

CONNECT result code reports line speed

1

0

1

Disabled

CONNECT result code reports DTE speed. /ARQ added to CONNECT result code.

Disabled

PROTOCOL result codes enabled. CONNECT result code reports DTE speed. /ARQ added to CONNECT result code.

Disabled

CONNECT result code reports line speed. /ARQ added to CONNECT result code.

2

0

1

Disabled

CARRIER result codes enabled. CONNECT result code reports DTE speed.

Disabled

CARRIER result codes enabled. PROTOCOL result codes enabled. CONNECT result code reports DTE speed.

Disabled

CARRIER result codes enabled. CONNECT result code reports line speed.

3

0

1

Disabled

PROTOCOL result codes enabled. CONNECT result code reports DTE speed.

Disabled

PROTOCOL result codes enabled. CONNECT result code reports DTE speed.

Disabled

PROTOCOL result codes enabled. CONNECT result code reports line speed.

4

0

Not used.

Not used.

Not used.

5

0

1

Disabled

COMPRESSION result codes enabled. CONNECT result code reports DTE speed.

Disabled

PROTOCOL result codes enabled. COMPRESSION result codes enabled. CONNECT result code reports DTE speed.

Disabled

COMPRESSION result codes enabled. CONNECT result code reports line speed.