User Manual

SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R11

13Packet switched data services
Page 120 of 308
13.2PPP LCP handshake behaviour
When a data call is initiated by means of D* AT command, the module switches to PPP mode just after the
CONNECT intermediate result code. The first step of the PPP procedure is the LCP handshake, in this phase
the behaviour of 2G products differs from 3G products and 4G products.
Entering OnLine Command Mode (OLCM) during LCP handshake phase is strongly discouraged because
the handshake procedure could be broken and should be restarted from the beginning.
13.3PDP context definition +CGDCONT
+CGDCONT
SARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
partial Yes NVM No - +CME Error
13.3.1Description
Defines the connection parameters for a PDP context, identified by the local context identification parameter
<cid>. If the command is used only with parameter <cid>, the corresponding PDP context becomes undefined.
Each context is permanently stored so that its definition is persistent over power cycles.
The command is used to set up the PDP context parameters for an external context, i.e. a data connection
using the external IP stack (e.g. Windows dial up) and PPP link over the serial interface.
Usage of static i.e. user defined IP address is possible in UTRAN and GERAN but not in EUTRAN; to prevent
inconsistent addressing methods across various RATs, static IP addressing is not recommended for LTE
modules: 3GPP TS 23.060 [10] Rel.8 and later releases specify that a UE with EUTRAN/UTRAN/GERAN
capabilities shall not include a static PDP address in PDP context activation requests.
13.3.2Syntax
Type Syntax Response Example
IPv4 example
AT+CGDCONT=1,"IP","APN_name",
"1.2.3.4",0,0
OK
IPv4v6 example
AT+CGDCONT=1,"IPV4V6","APN","0
.0.0.0 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0
",0,0
OK
Set AT+CGDCONT=[<cid>[,<PDP_
type>[,<APN>[,<PDP_addr>[,
<d_comp>[,<h_comp>[,
<IPv4AddrAlloc>[,<emergency_
indication>[,<P-CSCF_discovery>[,
<IM_CN_Signalling_Flag_Ind>[,
<NSLPI>]]]]]]]]]]]
OK
IPv6 example
AT+CGDCONT=1,"IPV6","APN","0.0.0
.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0
OK
Read AT+CGDCONT? +CGDCONT: <cid>,<PDP_type>,
<APN>,<PDP_addr>,<d_comp>,
<h_comp>[,<IPv4AddrAlloc>,
<emergency_indication>,<P-CSCF_
discovery>,<IM_CN_Signalling_Flag_
Ind>[,<NSLPI>]]
OK
+CGDCONT: 1,"IP","web.omnitel.it",
"91.80.140.199",0,0
OK
Test AT+CGDCONT=? +CGDCONT: (list of supported
<cid>s),<PDP_type>,,,(list of
supported <d_comp>s),(list of
supported <h_comp>s)[,(list of
supported <IPv4AllocAddr>s),
(list of supported <emergency_
indication>s),(list of supported
+CGDCONT: (1-3),"IP",,,(0-2),(0-4)
OK