LE910Cx AT Commands Reference Guide
80502ST10950A Rev. 14
Page 295 of 1904
2022-03-04
Not Subject to NDA
3.2.4.9.
AT&S - Data Set Ready (DSR) Control
Set DSR behavior on RS232
SIM Presence
Setting saved
Can be aborted
MAX timeout
SELINT
Not required
Specific profile
No
-
2
AT&S[<n>]
Set command controls the RS232 DSR pin behavior.
Parameter:
Name
Type
Default
Description
<n>
integer
3
Configuration parameter
Values:
0 : Always High
1 : Follows carrier status
2 : High when DATA mode connected
3 : High when the modem device is ready to receive AT
command
If option 1 selected, then DSR tied High when the device receives
from the network the UMTS traffic channel indication.
In power saving mode the DSR pin always tied Low & USB_VBUS
pin always tied Low.
If parameter is omitted, the command has the same behavior of
AT&S0.
If option 1 or 2 active, DSR will not tie High in case of GSM voice
connection.
Summary of Contents for LE910C series
Page 1904: ......
