Chapter 3 – AT Commands, S-Registers, and Results Codes

 

 

Command:

&Wn Store Configuration

Values:

n = 0 or 1

Default:

1

 

Description:

&W0 Store current settings in NVRAM; load them at power-on or following the ATZ command

 

instead of loading the factory defaults from ROM.

 

W1 Clear user default settings from NVRAM.

Command:

Xn Result Codes and Call Progress Selection

Values:

n = 0–4

Default:

0

 

Description:

X0 Basic result codes ( CONNECT only); does not look for dial tone or busy signal.

 

X1 Extended result codes ( CONNECT 28800, CONNECT 33600, etc.); does not look for dial tone

 

or busy signal.

 

X2 Extended result codes with NO DIALTONE; does not look for busy signal.

 

X3 Extended result codes with BUSY; does not look for dial tone.

 

X4 Extended result codes with NO DIALTONE and BUSY.

Command:

#Xn Number of XOFF Characters Sent

Values:

n = 0 or 1

Default:

0

 

Description:

#X0 Single XOFF character sent after buffer is full.

 

#X1 Multiple XOFF characters sent (one for every character received after buffer is full).

Command:

Yn

Long Space Disconnect

Values:

n = 0 or 1

Default:

0

 

Description:

Y0 Disable sending or responding to long space break signal on disconnect.

 

Y1 Enable sending or responding to long space break signal on disconnect. (Both modems must

 

have Y1 set.)

Command:

Z

Modem Reset

Values:

n/a

 

Description:

Reset modem to default values. Defaults come from user NVRAM if &W0 is set, from factory ROM

 

if &W1 is set.

Command:

,

Dialing Pause

Values:

n/a

 

Description:

Placed in dialing command, comma causes dialing pause for time set by S8.

Command:

:

Continuous Redial

Values:

n/a

 

Description:

Placed at end of dial command, a colon causes continuous redial of a number (10 in DOC

 

modems) until answered. Not used in ZDXK or ZDXI modems.

Command:

; Return to Command Mode

Values:

n/a

 

Description:

Placed at end of dial command, a semicolon causes an immediate return to command mode after

 

dialing.

Command:

!

Flash On-Hook

Values:

n/a

 

Description:

Placed in dial command, exclamation point causes modem to flash on-hook.

Command:

@

Quiet Answer

Values:

n/a

 

Description:

Placed in dial command, @ causes modem to wait for a ringback, then 5 seconds of silence, before

 

processing next part of command.

Command:

$

Call Card Tone Detect

Values:

n/a

 

Description:

Placed in dial command, causes modem to wait for a call card tone before processing next part of

 

command (such as a call card number).

Multi-Tech Systems, Inc. MT2834ZDX User's Guide

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Multi-Tech Systems MT2834ZDX Wn Store Configuration, Xn Result Codes and Call Progress Selection, Long Space Disconnect