Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3 -67
Example
AT+CUSD=1,"*00*0549598743#"
+CUSD: 0,"Connecting...",15
+CUSD: 0,"Connected",15
+CLCC: 1,1,4,0,0,"0545550099",129,"" >Call from USSD server
RING
ATA > answer to the server (when answered, the server call to 0549598743)
OK
+CLCC: 1,1,0,0,0,"0545550099",129,""
NO CARRIER
+CLCC: 1,1,6,0,0,"0545550099",129,""
Table 3-35:CUSD Termination Cause Table Index
Termination Cause Index
NO_CAUSE 0
CC_BUSY 1
PARAMETER_ERROR 2
INVALID_NUMBER 3
OUTGOING_CALL_BARRED 4
TOO_MANY_CALLS_ON_HOLD 5
NORMAL 6
DROPPED 10
NETWORK 12
INVALID_CALL_ID 13
NORMAL_CLEARING 14
TOO_MANY_ACTIVE_CALLS 16
UNASSIGNED_NUMBER 17
NO_ROUTE_TO_DEST 18
RESOURCE_UNAVAILABLE 19
CALL_BARRED 20
USER_BUSY 21
NO_ANSWER 22
CALL_REJECTED 23
NUMBER_CHANGED 24
DEST_OUT_OF_ORDER 25
SIGNALING_ERROR 26
NETWORK_ERROR 27