Siemens MC55 - Manual (Page 232)

MC55 AT Command Set
9.8 AT+CHLD
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MC55_ATC_V01.05 Page 232 of 469 2/10/04
Confidential / Released
OK
RING
RING
ATA
You accept the data call.
CONNECT 9600/RLP
hello
OK
+++
With ''+++'' you go in command mode.
at+clcc
You interrogate the status of all established calls.
+CLCC: 1,0,1,0,0,"03038639268",129
+CLCC: 2,1,0,1,0,"+491791292364",145
OK
at+chld=1
The active data call is terminated and the held voice
call becomes active.
OK
at+clcc
+CLCC: 1,0,0,0,0,"03038639268",129
OK