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DSU III S4W

ADTRAN

DSU III S4W

Card Type

CSU/DSU

Chip Set

Unidentified

Transfer Rate

56Kbps

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

ENTER button

B1

3 and C button

B13

UP button

B2

6 and F button

B14

DOWN button

B3

9 button

B15

CANCEL button

B4

# and QUICK button

B16

1 and A button

B5

RS-366 port for dialing

CN1

4 and D button

B6

RS-232/422 port

CN2

7 button

B7

V.35 port

CN3

* and SHIFT button

B8

Line out

CN4

2 and B button

B9

120V AC power

CN5

5 and E button

B10

Fuse, 1/2A @ 250V

R1

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

ALM

Red

On

Alarm condition has occurred on CSU

ALM

Red

Off

Alarm condition has not occurred on CSU

TST

Yellow

On

CSU is in test mode

TST

Yellow

Off

CSU is not in test mode

Proprietary AT Command Set

ANTI-STREAMING

Type:

Configuration

Format:

AT [cmds] %Tn [cmds]

Description:

Selects the anti-streaming function.

Command

Function

%T0

Anti-streaming disabled.

%T1

Anti-streaming enabled.

AUTO-ANSWER

Type:

Configuration

Format:

AT [cmds] _Jn [cmds]

Description:

Selects whether the DSU will automatically answer incoming calls.

Command

Function

_J0

Auto-answer disabled.

_J1

Auto-answer enabled.

CD SIGNAL

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Controls the behaviour of the Carrier Detect signal.

Command

Function

&C0

CD forced high.

&C1

CD normal.

&C2

CD forced high except at disconnect.

CLOCK SOURCE

Type:

Configuration

Format:

AT [cmds] &Xn [cmds]

Description:

Sets where the DSU will derive the clock source.

Command

Function

&X0

Internal transmit clock used.

&X1

External ETC clock used.

CTS SIGNAL

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Controls the behaviour of the Clear to Send signal.

Command

Function

&R0

CTS forced high.

&R1

CTS follows RTS.

&R2

CTS follows CD.

&R3

CTS and RTS follow CD.

&R4

CTS forced high except at disconnect.

CTS DELAY

Type:

Configuration

Format:

AT [cmds] _Dn [cmds]

Description:

Sets the delay from an RTS change to a CTS change.

Command

Function

_D0

Short delay set.

_D1

Long delay set.

DIAL BACKUP

Type:

Configuration

Format:

AT [cmds] _En [cmds]

Description:

Selects which stored number the Dial Backup function will dial.

DSR SIGNAL

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Controls the behaviour of the Data Set Ready signal.

Command

Function

&S0

DSR forced high.

&S1

DSR normal.

&S2

DSR forced high except at disconnect.

&S3

DSR forced high except in test mode.

&S4

DSR forced low in test mode.

&S5

DSR forced high except at disconnect or in test mode.

DTR SIGNAL

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Controls the behaviour of the Data Terminal Ready signal.

Command

Function

&D0

DTR forced high.

&D1

Dial the first stored number in virtual mode on high DTR.

&D2

DTR normal.

&D3

Dial the first stored number on high DTR.

&D4

Dial the second stored number on high DTR.

FRONT PANEL LOCK

Type:

Configuration

Format:

AT [cmds] _Pn [cmds]

Description:

Selects whether the front panel of the DSU is locked.

Command

Function

_P0

Front panel unlocked.

_P1

Front panel locked.

ID NUMBER SET

Type:

Configuration

Format:

AT [cmds] _N=nn [cmds]

Description:

Sets an ID number for multipoint applications.

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0

Range:

0 - 90

Unit:

1 minute

Description:

Sets the amount of time that the modem must be idle before it will disconnect.

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects the type of leased line the DSU is connected to.

Command

Function

&L1

DSU is connected to AT&T line.

&L2

DSU is connected to Sprint line.

LOOPBACK TEST - LOCAL

Type:

Configuration

Format:

AT [cmds] _An [cmds]

Description:

Selects whether the DSU will respond to a request from the DTE for a local loopback test.

Command

Function

_A0

Deny request for local loopback test.

_A1

Grant request for local loopback test.

LOOPBACK TEST - LOCAL

Type:

Configuration

Format:

AT [cmds] _Rn [cmds]

Description:

Selects whether the DSU will respond to a request from the DTE for a remote loopback test.

Command

Function

_R0

Deny request for remote loopback test.

_R1

Grant request for remote loopback test.

LOCAL SERIAL PORT SPEED

Type:

Configuration

Format:

AT [cmds] %Kn [cmds]

Description:

Sets the speed of operation for the local serial port.

Command

Function

%K3

Set speed to 2400bps.

%K4

Set speed to 4800bps.

%K5

Set speed to 9600bps.

%K6

Set speed to 19.2Kbps.

%K7

Set speed to 38.4Kbps.

%K8

Set speed to 56Kbps for synchronous mode, 57.6Kbps for asynchronous mode.

LOOPBACK SPEED

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Description:

Sets the speed of operation for the local serial port when performing local loopback testing.

Command

Function

%B1

Set speed to 1200bps.

%B2

Set speed to 2400bps.

%B3

Set speed to 4800bps.

%B4

Set speed to 9600bps.

%B5

Set speed to 19.2Kbps.

%B6

Set speed to 38.4Kbps.

%B7

Set speed to 48Kbps for synchronous mode only.

%B8

Set speed to 56Kbps for synchronous mode, 57.6Kbps for asynchronous mode.

%B9

Set speed to 64Kbps for synchronous mode only.

PASSWORD

Type:

Configuration

Format:

AT [cmds] %Pn [cmds]

Description:

Selects whether the DSU is protected by a password.

Command

Function

%P0

Password disabled.

%P1

Password enabled.

PASSWORD SET

Type:

Configuration

Format:

AT [cmds] %P=xxxx [cmds]

Description:

Sets the password to xxxx.

PASSWORD VERIFY

Type:

Configuration

Format:

AT [cmds] %P>xxxx [cmds]

Description:

Verifies the password as xxxx.

REMOTE CONFIGURATION

Type:

Immediate

Format:

AT [cmds] %Rn [cmds]

Description:

Begins remote configuration on profile n.

REMOTE CONFIGURATION ALLOWANCE

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects whether the DSU will allow remote configuration.

Command

Function

&P4

Remote configuration disabled.

&P5

Remote configuration enabled.

SCRAMBLER

Type:

Configuration

Format:

AT [cmds] _Fn [cmds]

Description:

Selects whether the DSU encrypts the signal.

Command

Function

_F0

Scrambler disabled.

_F1

Scrambler enabled.

SERIAL NUMBER SET

Type:

Configuration

Format:

AT [cmds] _S=nn [cmds]

Description:

Sets the DSUís serial number.

SYNC/ASYNC MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Sets synchronous or asynchronous mode.

Command

Function

&Q0

Use asynchronous mode.

&Q2

Use synchronous mode.

TEST MODES

Type:

Immediate

Format:

AT [cmds] &Tn [cmds]

Description:

Causes the DSU to enter test modes.

Command

Function

&T0

End test in progress.

&T1

Begin local loopback test.

&T4

Grant remote request for remote loopback test.

&T5

Deny remote request for remote loopback test.

&T8

Begin local loopback test with test pattern.

&T9

Begin test pattern.

&T10

Begin local DTE loopback test.

&T11

Begin RX/TX only local DTE loopback test.

TEST PATTERN

Type:

Configuration

Format:

AT [cmds] _Tn [cmds]

Description:

Selects which test pattern the DSU will use.

Command

Function

_T0

Use 2047-byte pattern.

_T1

Use 511-byte pattern.

_T2

Use DDS Stress Pattern 1.

_T3

Use DDS Stress Pattern 2.

_T4

Use DDS Stress Pattern 3.

_T5

Use DDS Stress Pattern 4.

Proprietary V.25bis Command Set

AT COMMAND EXECUTE - LOCAL

Type:

Immediate

Format:

CNLxxx;AT[AT cmds]

Description:

Executes an AT command. The password must be provided if necessary.

AT COMMAND EXECUTE - REMOTE

Type:

Immediate

Format:

CNRxxx;AT[AT cmds]

Description:

Executes an AT command on the remote DSU. The password must be provided if necessary.