Huawei MU509 At Command Interface Specification page 216

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
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+CSCS
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D
A
+CNUM
+CLCK
+CREG
^IPINIT
^IPOPEN
^IPLISTEN
^IPSEND
^IPGETDATA
^IPCLOSE
^IPENTRANS
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+COPS=
^CPBW= 15 16
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^SPN=
The reasons are described as follows:
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SIM card busy
Operation not supported
Check performed without the check request
No SIM card
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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Appendixes
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