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SIM5350 AT Command Set
SYNC
synchronous transparent
REL ASYNC asynchronous non-transparent
REL SYNC synchronous non-transparent
VOICE
normal voice
VOICE/
XXX
voice followed by data(
XXX
is ASYNC, SYNC, REL ASYNC or REL
SYNC)
ALT
VOICE/
XXX
alternating voice/data, voice first
ALT
XXX
/VOICE alternating voice/data, data first
GPRS
GPRS network request for PDP context activation
Examples
AT+CRC=1
OK
AT+CRC?
+CRC: 1
OK
4.7
AT+CVHU Voice hang up control
Description
Write command selects whether
or “
drop DTR
” shall cause a voice connection to be
disconnected or not. By voice connection is also meant alternating mode calls that are currently in
voice mode.
SIM PIN References
NO
3GPP TS 27.007
Syntax
Test Command
Responses
AT+CVHU=?
+CVHU: (list of supported
<mode>
s)
OK
Read Command
Responses
AT+CVHU?
+CVHU:
<mode>
OK
Write Command
Responses
OK
AT+CVHU=
<mode>
ERROR
Defined values
<mode>
SIM5350_ATC_V1.02
6/9/2014
35