ZyXEL Communications omni series Supported AT command types, Quick Tips when issuing AT commands

This confirms that the TA and your computer are communicating correctly.

Supported AT command types:

Type of AT Command	Example
Basic AT (Hayes compatible).	ATA
Basic AT$ (on line help).	AT$
Extended AT&.	AT&F
Extended AT* command.	AT*I1
S-Register command.	ATS0=1
S-Register bit-mapped command (set S-	ATS13.1=1
Register 13 bit 1 equal to 1).
S-Register inquiry command.	ATS0? Or ATS13.1?

You may also browse the list by using AT$.

Quick Tips when issuing AT commands:

The ENTER or RETURN key must be pressed to execute a command.

Multiple AT commands can be combined into one line. For example, AT&O2 and ATB02 can be combined into one line AT&O2B02.

The TA processes commands from left to right. The AT command that appears to the right might over-write the command to the left. For example, ATB13B14 will result in ATB14 since both B13 and B14 can not co-exist.

If you see duplicated characters for each one you type, your TA and software both have their echo feature turned on (the TA defaults to enable command echo). To eliminate the double characters, turn off software command echo.

Use “A/” to repeat the last command. No ‘AT’ prefix is needed for this command.

26 ISDN Communication Basics