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SNT13

DIGICOM SPA

SNT13

Card Type

ISDN TA

Chip Set

Unidentified

I/O Options

ISDN interface via RJ-45 connector, reset

ISDN Rate

128Kbps

ISDN Modulation Protocol

V.110, V.120

Error Correction/Compression

V.42bis

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/

E, Q, V, W

&C, &Z

S Registers

S3, S4, S12, S25

 

Note: See MHI Help File for full command documentation.

PROPRIETARY AT COMMAND SET

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

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

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 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

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

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

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

3, 2

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=4

600bps

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

ESCAPE CHARACTER

Type:

Register

Format

AT [cmds] S2=n [cmds]

Range:

0-127

Unit:

ASCII

Description:

Selects a character used for the escape sequence

Note: A value greater than 127 will disable the escape sequence.

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.