BGS2T AT Command Set
9.8 AT+CHLD
BGS2T_ATC_V01.301
Page 226 of 554
1/31/12
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9.8
AT+CHLD Call Hold and Multiparty
The
command controls the Supplementary Services Call Hold and Multiparty. Calls can be put on hold,
recovered, released and added to a conversation.
Like for all Supplementary Services, the availability and detailed functionality of Call Hold and Multiparty services
depends on the configuration of the network. The BGS2T can only request the service, but the network decides
whether and how the request will be answered.
Syntax
Parameter Description
0
Release all held calls or set User Determined User Busy (UDUB) for a waiting
call:
•
If a call is waiting, release the waiting call. The calling party will receive a
"BUSY" indication (Supplementary Service User Determined User Busy
"UDUB")
•
Otherwise, terminate all held calls (if any).
1
Terminate all active calls (if any) and accept "the other call" as the active call:
•
If a call is waiting, the waiting call will be accepted.
•
Otherwise, if a held call is present, the held call becomes active.
1X
Terminate a specific call X. The call may be active, held or waiting. The remote
party of the terminated call will receive a "NO CARRIER" indication.
Parameter X is the call number
in the list of current calls indicated by
. Instead of
, the
command with parameter
can be used.
2
Place all active calls on hold (if any) and accept "the other call" as the active
call:
•
If a call is waiting, the waiting call will be accepted.
•
Otherwise, if a held call is present, the held call becomes active.
2X
Place all active calls on hold except call X.
Parameter X is the call number
in the list of current calls indicated by
. Instead of
, the
command with parameter
can be used.
Test Command
AT+CHLD=?
Response(s)
+CHLD:
(list of supported
OK
Write Command
AT+CHLD=
]
Response(s)
OK
ERROR
+CME ERROR:
PIN ASC0 MUX1 MUX2 MUX3
Last
Reference(s)
+
+
+
+
+
-
-
3GPP TS 27.007
<n>
(num)
Confidential / Released
