AT Commands Reference Guide
80529ST10815A Rev.2– 2017-09-14
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+CEREG – Network Registarion Status
3 - GSM w/EGPRS (see Note 3) (not applicable)
4 - UTRAN w/HSDPA (see Note 4) (not applicable)
5 - UTRAN w/HSUPA (see Note 4) (not applicable)
6 - UTRAN w/HSDPA and HSUPA (see Note 4) (not applicable)
7 - E-UTRAN
Note 3: 3GPP TS 44.060 [71] specifies the System Information messages which give the
information about whether the serving cell supports EGPRS.
Note 4: 3GPP TS 25.331 [74] specifies the System Information blocks which give the
information about whether the serving cell supports HSDPA or HSUPA.
<cause_type>: integer type; indicates the type of <reject_cause>.
0 - Indicates that <reject_cause> contains an EMM cause value, see 3GPP TS 24.301 [83]
Annex A.
1 - Indicates that <reject_cause> contains a manufacturer-specific cause.
<reject_cause>: integer type; contains the cause of the failed registration. The value is of
type as defined by <cause_type>.
+CEREG: <n>,<stat>[,[<tac>],[<ci>],[<AcT>[,<cause_type>,<reject_cause>]]]
+CEREG=?
Test command returns values supported as a compound value.
+CEREG: (list of supported <n>s)
Reference
3GPP TS 27.007
PDP Context Read Dynamic Parameters +CGCONTRDP
+CGCONTRDP parameter command syntax
AT+CGCONTRDP
=
[<p_cid>]
Possible response(s):
+CGCONTRDP: <p_cid>,<bearer_id>,<apn>[,<ip_addr>,
<subnet_mask>[,<gw_addr>[,<DNS_prim_addr>[,<DNS_sec_addr>
[,<P-CSCF_prim_addr>[,<P-CSCF_sec_addr>]]]]]][<CR><LF>
+CGCONTRDP: <p_cid>,<bearer_id>,<apn>[,<ip_addr>,
<subnet_mask>[,<gw_addr>[,<DNS_prim_addr>[,<DNS_sec_addr>
[,<PCSCF_prim_addr>[,<PCSCF_sec_addr>]]]]]][…]]
Description:
The execution command returns the relevant information:
<bearer_id>, <apn>, <ip_addr>, <subnet_mask>,<gw_addr>, <DNS_prim_addr>,
<DNS_sec_addr>, <P-CSCF_prim_addr> and <P-CSCF_sec_addr> for a non- secondary
PDP Context established by the network with the primary context identifier <p_cid>. If
the context can’t be found an ERROR response is returned.
If the parameter <p_cid> omitted, the relevant information for all established PDP
contexts returned.
Note: The dynamic part of the PDP context will only exist if established by the network.
The test command returns a list of <p_cid>s associated with active contexts.