Cinterion
®
ENS22-E AT Command Set
3.2 AT&C
ENS22-E_ATC_V01.000
19/02/11
Page 50 of 189
3.2
AT&C Set Data Carrier Detect (DCD) Line Mode
The
command controls the behavior of the UE's DCD line.
offers full functionality only if the DCD0 line is enabled with
="GPIO/mode/DCD0","std". Other-
will respond "+CME ERROR: operation not allowed".
Syntax
Parameter Description
[0]
DCD line shall always be on.
1
(&F)
DCD line shall be on only when data carrier signal is present.
2
DCD line shall be on when one or more Internet services defined on the related
serial channel are in an active state as described below. For details on the var-
ious service states refer to
, parameter
,
parameter
. The DCD line status for an Internet service is sig-
naled at the interface where the service had been opened with the AT com-
mand
• Transparent UDP client, SOCKET: DCD shall be on when
="Connnecting" or "Up"
Exec Command
AT&C
]
Response(s)
OK
PIN Last
Reference(s)
-
-
V.250
<value>
(num)(&V)(&W)