Huawei EM770W, At Command Interface Specification

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HUAWEI UMTS M2M Module V100R001
AT Command Interface Specification
Issue 18 (2009-06-22) Commercial in Confidence Page 126 of 169
1 Local network is registered
2 Not registered. But the MS is searching the new operators to be registered.
3 Registration rejected
4 Unknown reasons
5 Roaming network is registered
<lac>: Position code information, composed of four characters and expressed in
hexadecimal. (Example: “00C3”= “195” in decimal)
<ci>: Cell information, composed of four characters and expressed in hexadecimal.
(Extended Information: according 3GPP Rel7, four characters are requested, but if
before Rel7, for example the currently network is Rel6 mostly, only the last two
characters is valid, the other characters is invalid and should be ignored. For example,
if the <CI> return 3B3DE1C, only DE1C is valid and could be used as DE1C is the last
two characters.)
12.2 Network registCGREG
12.2.1 Command Syntax
Command Possible response(s)
+CGREG=[<n>] <CR><LF>OK<CR><LF>
+CGREG? <CR><LF>+CREG:<n>,<stat>[,<lac>,<ci>]<CR><LF><CR>
<LF>OK<CR><LF>
+CGREG=? <CR><LF>+CREG: (list of supported
<n>s)<CR><LF><CR><LF>OK<CR><LF>
12.2.2 Interface Description
The SET command is used to control “+CGREG” to report event proactively.
When <n>=1, and the state of network registration changes, the following will be
reported: +CGREG:< stat >
When <n>=2, and the cell information changes, the following will be reported:
+CGREG: <stat>[,<lac>,<ci>]
The READ command returns the current registration state <stat>. The position
information <lac> and <ci> is reported only when <n>=2.
12.2.3 Defined Values
<n>:
0 Disable proactive reporting of “CGREG”
1 Enable proactive reporting of “+CGREG <stat>”