ZyXEL Communications U-90E, Руководство пользователя

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U-90E Data/Fax Modem
Basic Modem Operation
4-5
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
using
ATE0
and on using
ATE1
(default). To eliminate the double characters, turn off the
software’s command echo rather than using the
ATE0
command. If you see no
characters in your 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 and “numerical” result codes
(i.e. “0”). You can use the
ATV
command to set it one way or the other as follows.
Table 4-2
AT
Result Codes
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. They are
as follows:
Table 4-3 Basic Commands
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.