Table 4-3 Basic Commands - ZyXEL Communications U-90E User Manual

If you see duplicated characters for each character you type, your modem and software
both have their "echo" feature turned on. The modem command echo state is switched off
ATE0
using and on using
software's command echo rather than using the
characters in your terminal window when you type, the modem's echo setting is probably
set to off. In this case, issue the
When a command is successfully issued and accepted, a modem responds with a "Result
Code." Your modem supports both "verbose" result codes and "numerical" result codes
(i.e. "0"). You can use the
Command
ATV0
ATV1
There are a few basic commands that do not require the "
as follows:
Command
A/
A>
<any key>
+++
Basic Modem Operation
ATE1
(default). To eliminate the double characters, turn off the
ATE1
command.
ATV
command to set it one way or the other as follows.
AT
Table 4-2 Result Codes
Description
Select numerical result code.
Select verbose result code.

Table 4-3 Basic Commands

Description
Repeats the last issued AT command once.
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.
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.
U-90E Data/Fax Modem
ATE0
command. If you see no
AT
" command prefix. They are
4-5