User`s manual

18 Basic Modem Operation
terminal window when you type, the modem’s echo setting is
probably set to off. In this case, issue the ATE1 command.
• When a command is successfully issued and accepted, a modem
responds with a “Result Code.” Your modem supports both
“verbose” result codes (i.e. “OK”), and “numerical” result
codes (i.e. “0”). You can use the ATV command to set it one
way or the other as follows.
Command Description
ATV0 Select numerical result code.
ATV1 Select verbose result code.
There are a few basic commands that do not require the “AT”
command prefix. These are as follows:
Command Description
A/ Repeats the last issued AT command once.
A> Repeats the last issued AT command once, or
re-dials the last dialed number up to 9 times
until a key is pressed or a connection is made.
<any key> Terminates the current connection attempt, if
pressed while modem is handshaking.
+++ Escape code sequence. Entered while the
modem is in Data Mode. Returns modem to
Command Mode.
The U-336E supports several groups of AT commands:
AT Command Set/Type Example
Basic AT (Hayes compatible) ATB0
Basic AT$ (on line help) AT$
Extended AT& commands AT&N0
Extended AT* commands AT*I1
Fax AT+ commands AT+FCLASS=2