Westermo GD-01 - Manual (Page 21)

21 6196-2220
A – Answer a call
Description:
When the product receives a call, it sets the RingInd signal and sends the ASCII “RING”
or “+CRING: ” string to the application (+CRING if the cellular result code
+CRC is enabled).Then it waits for the application to accept the call with the ATA com-
mand.
Syntax:
ATA
Command example Possible responses Note
RING Incoming call
ATA OK 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
Command example Possible responses Note
ATD123456789 NO CARRIER Outgoing voice call,
call setup failure
AT+CEER +CEER: Error Ask for reason of release,
OK is the cause
information element
values from GSM recom-
mendation 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.
B A C K