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GPRS Modes
Dialling into the
GPRS network
Setting up the IP
server
GSM data
communication
Page 48 of 63
The connection to the GPRS provider is established automatically after the
device is restarted, so long as the GPRS mode is activated in class 82.
To successfully establish the connection, the GPRS access data must be
configured in the parameter classes 60 and 61:
Provider (selection of the GPRS network operator, e.g. T-D1,
Vodafone)
PDP_Context (access parameters of the GPRS network operator)
USER (login name in the GPRS network)
PASSWORD (login password in the GPRS network)
Dial-in string (not used)
DNS1 (primary Domain Name Server in the GPRS network; optional)
DNS2 (secondary Domain Name Server in the GPRS network;
optional)
In addition, the timing behaviour in the event of problems with the GPRS
dial-in can be set via class 82.
Attention
Please note that data packets are exchanged even when a connection is
(re-) established, when an attempt to connect to a remote station is made
(e.g. server is switched off, wrong destination address, etc.), and to maintain
a connection. Please especially note this when using networks which are
subject to charges!
Like dialling-in to the GPRS network, the IP server is set up automatically
when GPRS mode is activated. The following characteristics of the IP server
must be defined in class 82:
GPRS function (must be set in order for the device to work in GPRS
mode)
Server port 1 (port at which the server waits for incoming IP
connection requests; server port 2 is not considered)
Optionally the access authorisation can be limited in class 82:
Check source IP address of the client (the source IP address of a
connection request is evaluated)
Source IP addresses 1 to 5 (valid source addresses of a connection
request)
Check source port of the client (the source port of a connection
request is evaluated)
Source ports 1 to 5 (valid source ports of a connection request)
As a substitute (e.g. in case of failure of the GPRS connection) the ZDUE-
GPRS-PLUS-VI in GPRS mode can accept also CSD calls
(CircuitSwitchedData calls) from a remote station, thus providing
communication via the GSM network.
In this case the behaviour for data transmission to any other desired modem
in the GSM or fixed network is the same as described above.
ZDUE-GPRS-PLUS-VI
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