Quick Tips For Issuing At Commands - NETGEAR XM128 ISDN Reference Manual

In order to issue an AT command statement, you first need to run your communications software
and configure it to the port connected to the Model XM128 modem. Refer to your communications
software manual for more information.
Table 4-2 lists the supported AT command types.
Table 4-2. Supported AT command types
Type of AT command
Basic AT (Hayes compatible)
Basic AT$ (online Help)
Extended AT&
Extended AT* command
S-Register command
S-Register bitmapped command
(set S-Register bit 1 equal to 1)
Register inquiry command
You can also browse the list by using the command AT$.

Quick Tips for Issuing AT Commands

The following is a list of quick tips when issuing AT commands:
• The [Enter] key must be pressed to execute a command.
• Multiple AT commands can be combined into one line (for example, AT&O2 and ATB02 are
combined as follows: AT&O2B02).
• The Model XM128 modem processes commands from left to right. The AT command that
appears to the right might overwrite the command to the left (for example, ATB13B14 results
in ATB14 because both B13 and B14 cannot coexist).
• If you see duplicated characters for each one you type, your Model XM128 modem and
software both have their echo feature turned on (the modem 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.The Model
XM128 modem supports either verbose result code (OK, for example) or numerical result
code (0, for example). You can use the ATVn command to set it one way or the other.
Configuration
Reference Guide for the Model XM128 ISDN Digital Modem
Example
ATA
AT$
AT&F
AT*I1
ATS0=1
ATS13.1=1
SATS0? or ATS13.1?
4-3