SimCom SIM5300E User Manual

SIM5300E AT Command Manual V1.02
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3.2.14 AT+CHLD Call Hold and Multiparty
AT+CHLD Call Hold and Multiparty
Test Command
AT+CHLD=?
Response
+CHLD: (list of supported <n>s)
OK
Write Command
AT+CHLD=<n>
Response
TA controls the supplementary services Call Hold, Multiparty and Explicit Call
Transfer. Calls can be put on hold, recovered, released, added to
conversation, and transferred.
These supplementary services are only
applicable to tele service 11 (Speech: Telephony).
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters <n>
0 release all held calls or set User Determined User Busy for a
waiting/incoming call; if both exists then only the waiting call
will be rejected
1 release all active calls and accepts the other (held or waiting)
Note: In the scenario: An active call, a waiting call and held call, when
the active call is terminated, we will make the Waiting call as active.
1x
release a specific call (x specific call number as indicated by
+CLCC)
2 place all active calls (if exist) on hold and accepts the other call
(held or waiting/in-
coming). If only one call exists which is
active, place it on hold and if only held call exists make it active
call
2x
place all active calls on hold except call x with which
communication is supported3 adds a held call t
o the
conversation.
3 adds a held call to the conversation.
Reference
3.2.15 AT+CIMI Request International Mobile Subscriber Identity
AT+CIMI Request International Mobile Subscriber Identity
Test Command
AT+CIMI=?
Response
OK
SIMCOM CONFIDENTIAL FILE

SimCom SIM5300E Specifications

General

Brand	SimCom
Model	SIM5300E
Category	Control Unit
Language	English