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Profile 4 (&F4)—HDLC Asynchronous Operation
AT Command
&C1
$D0
&D1
E1
&E4
&E6
&E13
#X0
%E1
%E4
&R1
&RF1
S0=1
S2=43
S3=13
S4=10
S5=8
S7=45
S10=20
S25=5
S32=20
S34=2
S50=0
S52=0
S53=2048
&S1
V1
!Z=7
RF300E/RF310E
Description
DCD functions normally
Disable persistent DTR dialing
Hang up when DTR drops
Enable command mode echo
Enable hardware flow control
Discard XON/XOFF characters
Enable pacing
Disable Sending Multiple Xoff Characters
Enable +++ escape method
No OK response to +++ or <BREAK> escape
CTS always high
CTS is independent of RTS
Answer after 1 ring
Set escape character to + (ASCII 43)
Set carriage return character to CR (ASCII 13)
Set line feed character to LF (ASCII 10)
Set backspace character to BS (ASCII 8)
Wait 45 seconds for connection before aborting
Set DCD drop time to 700 ms
Set DTR detect time to 500 ms
Set escape sequence guard time to 2 seconds
Set maximum escape sequence character length
Caller Line ID disabled
Auto-Protocol Detection Disabled
Maximum X.75 Buffer Size (2048 bytes)
DSR follows DCD
Select verbose messages
Enable HDLC data protocol
Appendix D - AT Command Summary
161
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