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The +CEER command returns the reason for the last call setup or in-call modification failure,
or the reason for the last call release. <report> is the textual representation of the network
cause value as listed in GSM 04.08 annex H.
6.3.8 +CRC Cellular result codes
Command
Set
+CRC=<mode>
Read
+CRC?
Test
+CRC=?
The +CRC command controls whether the extended format of an incoming call indication is
used. When enabled, an incoming call is indicated with the unsolicited result code +CRING:
<type> instead of the normal RING.
Defined values
<mode>:
0
1
<type>:
FAX
VOICE
VOICE/REL ASYNC
ASYNC
REL ASYNC
ALT VOICE/REL ASYNC alternating voice/data, voice first (BS 61)
ALT REL ASYNC/VOICE alternating voice/data, data first (BS 61)
ALT VOICE/FAX
ALT FAX/VOICE
6.3.9 +CHSR Current call parameters reporting
Command
Set
+CHSR=<mode>
Read
+CHSR?
Test
+CHSR=?
Response
Default
0
+CRC:
<mode>
+CRC: (0,1)
disables extended format
enables extended format
facsimile (TS 62)
normal voice (TS 11)
voice followed by data (BS 81)
normal data (BS 81)
normal data (BS 81)
alternating voice/fax, voice first (TS 61)
alternating voice/fax, fax first (TS 61)
Response
Default
1
+CHSR: <mode>
+CHSR: (0,1)
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