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Extended "AT&" Commands
(Includes RTS/CTS Flow Control Commands)
Command
Description
&Bn
Data rate, terminal-to-modem
&B1
DTE/DCE rate fixed at DTE setting
&Cn
Carrier Detect operations
&C1
Carrier Detect tracks presence of carrier
&Dn
Data Terminal Ready (DTR) operations
&D2
DTR off causes modem to hang up
&F
Load the default factory settings,
&Kn
Data flow control, DTE/DCE, n=0,3,4
&K0
Flow control disabled
&K3
Hardware (RTS/CTS) flow control
&K4
Software (XON/XOFF) flow control
&Sn
Data Set Ready (DSR)
&S0
DSR overridden, DSR always on
Appendix C - AT Commands
113
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