10 data set ready (dsr) control - &s, 11 ring (ri) control - \r – Rainbow Electronics GM862-QUAD-PY User Manual
Page 46

 
 
 
 
AT Commands Reference Guide
80000ST10025a Rev. 5 - 09/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 46 of 434
&K - Flow Control
SELINT 0 / 1 / 2
software bi-directional flow control (XON/XOFF) with filtering
Note: if parameter is omitted, the command has the same behaviour as
AT&K0
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. 
3.5.3.2.10 Data Set Ready (DSR) Control - &S
&S - Data Set Ready (DSR) Control
SELINT 0 / 1 / 2
AT&S[
Set command controls the RS232 DSR pin behaviour. 
 
Parameter: 
 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 GSM 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 
 
Note: If Selint=2 is selected, and option 1 and 2 are active, DSR will not 
tied High in case of GSM voice connection 
3.5.3.2.11 Ring (RI) Control - \R
\R - Ring (RI) Control
SELINT 0 / 1 / 2
AT\R[
Set command controls the RING output pin behaviour. 
 
Parameter: 
 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 
