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hangs up. If the call is completed, the appropriate CONNECT message
similar to X1 will be displayed. The modem will not detect a no dial
tone situation.
The X4 command followed by a dial command causes the modem to go
off hook and wait for a dial tone before dialing. If a dial tone is not
detected within 5 seconds, the modem returns a NO DIALTONE
message and hangs up. If a busy signal is detected, the modem returns a
BUSY message and hangs up. If the call is completed, the appropriate
CONNECT message similar to X1 will be displayed.
The X4 command combines all the features of X1, X2, and X3. The
factory setting is X4.
Note
When an X2, X3, or X4 command is in effect, an appropriate
CONNECT data rate message or code is displayed as for
X1. When a blind dial command (X, X1, X3) is in effect, the
modem waits 2 seconds or the time set by S6 and then dials.
Number Code Application *RC
Some communications software packages use different number codes to
indicate the data rate of the serial port. This option selects either of two
commonly used number code sets.
Command
*RC
*RC1
* default
Note
Asterisks in AT commands are part of the command and do
not indicate footnotes.
Code Set
Standard *
Alternate
Number
15
18
11
12
V.3400
AT Commands
Operation
4800 bps
9600 bps
4800 bps
9600 bps
5-9
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