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%SPN=
+CLCK=
+CCWA=
+CCFC=
+CUSD=
+COPS=
%DTMF=
%CPBR=
%CPBW=
%SPN
+CHLD=
%DTMF=
%SPN=
The reasons are described as follows:
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2
3
4
5
6
Issue 18 (2009-06-22)
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27
30
31
17
17
17
27
16
15
16
65280
65281
33
33
38
SIM card busy
Operation not supported
Check performed without the check request
No SIM card
PUK check request existent
SIM card failure
Commercial in Confidence
HUAWEI UMTS M2M Module V100R001
1
32
10
13
25
0
4
7
18
19
18
19
18
19
12
12
12
65282
65823
65284
34,35
37
34
28
AT Command Interface Specification
25
25
26
26
8
9
0
1
20
21
22
23
20
21
22
23
20
21
22
23
65285
65286
29
30
Page 161 of 169
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4
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24
25
26
65287
39
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