User Manual

Table Of Contents
SARA-R4 series-AT commands manual
UBX-17003787 - R16
13Packet switched data services
Page 129 of 401
On SARA-R410M-02B-00, SARA-R410M-02B-01, SARA-R410M-52B-00, SARA-R410M-52B-01,
SARA-R412M-02B-00 and SARA-R412M-02B-01 using external PDP contexts via dial-up, it is possible to
have a single PPP instance active.
13.1.3Parameter definition
13.1.3.1<APN>
The Access Point Name (APN) is a string parameter, which is a logical name, valid in the current PLMN's
domain, used to select the GGSN (Gateway GPRS Support Node) or the external packet data network to be
connected to. The APN can be omitted: this is the so-called "blank APN" setting that may be suggested by
network operators (e.g. to roaming devices); in this case the APN string is not included in the message sent
to the network.
The maximum length of the parameter is:
SARA-R4 / SARA-N4 - 62 characters
13.1.3.2<cid>
PDP context identifier. A numeric parameter specifying a particular PDP context definition. This parameter is
valid only locally on the interface DTE-MT.
The maximum number of definable and active PDP contexts depend(s) on the product version:
1
Product Max number of
definable PDP contexts
Max number of active
PDP contexts
SARA-R4 / SARA-N4 8 8
13.1.3.3<PDP_addr>
String parameter identifying the MT in the IP-address space applicable to the PDP service. If the value is null or
omitted (dynamic IP addressing), then a value may be provided by the DTE during the PDP startup procedure
or, failing that, a dynamic address will be requested via DHCP. It can be read with the command AT+CGPADDR
or AT+CGDCONT read command.
To request a static IP address, a fixed IP address shall be specified for the <PDP_addr> paramater of the
+CGDCONT set command and the user shall not rely on PPP negotiation via IPCP CONFREQ option.
Depending on the IP-version, the <PDP_addr> consists of 4 octets (IPv4) or 16 octets (IPv6):
IPv4: "ddd.ddd.ddd.ddd"
IPv4v6: "ddd.ddd.ddd.ddd ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd"
IPv6: "ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd.ddd"
13.1.3.4<PDP_type>
The Packet Data Protocol (PDP) type is a string parameter which specifies the type of packet data protocol:
"IP" (default value): Internet Protocol (IETF STD 5)
"NONIP": Non IP
"IPV4V6": virtual <PDP_type> introduced to handle dual IP stack UE capability (see the 3GPP TS 24.301 [68])
SARA-R4 / SARA-N4
"IPV4V6" is the default PDP type for the default profile.
"IPV6": Internet Protocol, version 6 (see RFC 2460)
SARA-R404M / SARA-R410M-01B / SARA-R410M-52B
<PDP_type>="NONIP" is not supported.
SARA-R410M-02B
<PDP_type>="NONIP" is not supported by SARA-R410M-02B-00.
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 module series differ between them.
1
The maximum number of active PDP contexts may be limited by the MNO