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

Page 46

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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[<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 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[<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

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