Motorola G24 Guide Developer's Manual page 111

The following table shows the +CHLD actions according to state and operation:
Table 3-11: +CHLD Actions According to Call State and Operation
Call State
0 -Release
Held Call
IDLE Error 3
Single Active Error 3.
Call
MTPY Active Error 3.
Call
Incoming Error 3.
Call (RING)
Single Active Releases
Call and waiting call.
Waiting Call
MTPY Active Releases
Call and waiting call.
Waiting Call
Single Held Releases held
Call call.
MTPY Held Releases held
Call call.
Single (or Releases held
MTPY) call.
Active Call
and Single (or
MTPY) Held
Call
December 31, 2007
CHLD <operation>
1 - Release 1x - Release
Active Call, Active/Held
Accept Held Call x from
Call MTPY Call
Releases If x=1,
active call. releases
active call,
otherwise
error 22.
Releases Releases
active call. specific
active call x.
If x does not
exist, then
error 22.
Releases Releases
active call, specific
accepts active call x.
waiting call. If x does not
exist, then
error 22.
Releases Releases
active call, specific
accepts active call x.
waiting call. If x does not
exist, then
error 22.
Accepts held Releases held
call. call.
Accepts held Releases
call. specific
call x. If x
does not exist,
then error 22.
Releases Releases
active call specific
and accepts active call x.
held call. If x does not
exist, then
error 22.
AT Commands Reference Manual
Chapter 3: AT Commands Reference
2 - Switch 2x - Active
Between MTPY Call to
Held and Hold, Except
Active Call for Call x
Puts active Error 3.
call on hold.
Puts active Split. If call x
call on hold. does not exist,
then error 22.
Puts active Error 3.
call on hold,
accepts
waiting call.
Puts active Split. If x
call on hold does not exist,
and accepts then error 22.
waiting call.
Accepts held Error 3.
call.
Accepts held Error 3.
call.
Switches. Error 3.
3 - Add Held
Call to
Active Call
Error 3.
Error 3.
Error 3.
Error 3.
Error 3.
Error 3.
Makes a
conference
call.
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