ZyXEL Communications omni.net LCD+M User Manual

 A-2 

The commands or data are packaged. Each packet has its own destination address. All the DTE 

channels can be accessed individually by way of multiplexing. 

 

An AT Command is a command in asynchronous data format issued by the computer to the ISDN 

TA through the asynchronous computer-modem interface. AT Commands control the ISDN TA 

behavior and actions. To send an AT Command from a computer to the omni.net, you must run a 

communication software program and the omni.net must be in command state. 

Exceptions to the above requirement are [A/, A>, and +++.] These commands are neither preceded 

by the prefix AT, nor followed by any other character: 

!  A/ - re-executes the last command once. 

!  A> - re-executes the last command once. Also used to repeat the last call up to 9 times 

until aborted by pressing down any key on the keyboard or front panel or until a 
successful connection with a remote ISDN TA has been made. 

!  +++ - is the escape sequence code that is entered in data state to return the ISDN TA to 

command state. The omni.net will accept AT commands only while it is in command 
state. 

All other AT Commands require the command prefix [AT]. The prefix may be typed in either 

upper 'AT' or lower case 'at'. 

 

NOTE: Do not use a combination of upper and lower cases in the 
prefix. 

The following tables list all of the AT commands supported by the omni.net LCD/Plus/D. An 

asterisk (*) following a command option or value indicates that it is a default setting when the 

omni.net is shipped.