HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved.
Page 41 of 229
&K Flow Control
Note:
Flow control is always
hardware bi-directional flow control (both
RTS/CTS
active
)
Note:
&K
has no Read Command. To verify the current setting of &K, simply
check the settings of the active profile issuing
AT&V
.
Note: Hardware flow control (
AT&K3
) is not active in command mode.
3.5.2.2.11.
Data Set Ready (DSR) Control - &S
&S - Data Set Ready (DSR) Control
AT&S[<n>]
Set command controls the RS232
DSR
pin behaviour.
Parameter:
<n>
0 - always
High
1 - follows the GSM traffic channel indication.
2 -
High
when connected
3 -
High
when device is ready to receive commands (factory default).
Note: if option 1 is selected then
DSR
is tied
High
when the device receives from
the network the UMTS traffic channel indication.
Note: in power saving mode the
DSR
pin is always tied
Low
Note: if parameter is omitted, the command has the same behaviour of
AT&S0
3.5.2.2.12.
Ring (RI) Control - \R
\R - Ring (RI) Control
AT\R[<n>]
Set command controls the
RING
output pin behaviour.
Parameter:
<n>
0 -
RING
on during ringing and further connection
1 -
RING
on during ringing (factory default)
2 -
RING
follows the ring signal
Note: to check the ring option status use the
&V
command.
Note: if parameter is omitted, the command has the same behaviour of
AT\R0
