User guide

Developers guidelines | AT commands
130 June 2010
Call hold and multiparty
This use scenario uses the call hold functionality to switch between two calls.
+CRING: VOICE
+CLIP:
”0706123456”,
129
After every CRING, the calling line identity is
presented
Reject call
AT+CLIP?
+CLIP: 1,1
OK
CLIP enabled and provisioned
AT+CLIP=0 Disable calling line identification
OK
AT command Response Comment
AT+CCWA=1,1 Activate call waiting
ATD046193000; OK Originate a voice call
+CCWA:
”[phone]”,
145
Another call is waiting
AT+CHLD=2 Put first call on hold and answer the second call
OK
AT+CHLD Release the second call and recover the first call
OK
AT command Response Comment