A – answer a call, Ceer – extended error report – Westermo GDW-11 User Manual
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28 Call Control commands
6615-2220
A – Answer a call
Description:
When the product receives a call, it sets the RingInd signal and sends the ASCII “RING”
or “+CRING:
+CRC is enabled). Then it waits for the application to accept the call with the ATA com-
mand.
Syntax:
ATA
Parameters:
No parameters
Command example
Possible responses
Note
RING Incoming
call
ATA CONNECT
Answer to this incoming
call, call accepted
ATH OK
Disconnect call OK, call
disconnected
+CEER – Extended error report
Description:
This command gives the cause of call release when the last call set up (originating or
answering) failed.
Syntax:
AT+CEER
Parameters:
No parameters
Command example
Possible responses
Note
ATD123456789 NO
CARRIER
Outgoing call, Call setup
failure
AT+CEER
+CEER : Error
Ask for reason of release,
OK
mation element values
from GSM recommenda-
tion 04.08 or specific Call
accepted
For the cause information element from GSM 04.08 see further in this manual. “NO
CARRIER” indicates that the AT+CEER information is available for failure diagnosis.