Insys GPRS 5.0 serial 11-02-01-03-10.014 Manuale Utente

INSYS GPRS 5.0 serial 

 

Connection 

 

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When directly using the GPRS functionality of the GSM/GPRS en-
gine, the INSYS GPRS 5.0 serial will only make PPP raw data avail-
able after the dial-up into the GPRS network has taken place. In this 
case, the application must perform the required protocol stacks 
(PPP, TCP/IP) for the application. In this mode, the TCP/IP stack of 
the INSYS GPRS 5.0 serial is not active. 
Example: Connection via the RDT network of a PC.  
In this mode, the INSYS GPRS 5.0 serial is the PPP server. 

With the PDP context, the Access Point Name (APN) of the GPRS 
network provider is specified. 
Note:  see also Chapter 10 "GPRS Dial-in Parameters" 
E.g.: The Vodafone APN address is  
WEB.VODAFONE.DE. 
There is basically the possibility to define different PDP contexts; in 
this case it is stored as context “1” (see also Chapt. 6.2.4 “AT com-
mands for GPRS”). 
Note:  The PDP context can not be stored permanently; it must be 

To adjust the authentication type to the one used by the PPP cli-
ent of the application, the INSYS GPRS 5.0 serial offers two possi-
bilities: 
 

¾

  No authentication 

¾

  PAP 

Modem-compatible GPRS connection setup  
When dialing this special number, the GPRS service is activated. 
 
If a PDP context (AT+CGDCONT) is defined, 
such as: The PDP context no. 1, the AT command will be:  
The successfully established connection is indicated by the con-
trol signal DCD and the message CONNECT. 
After the GPRS connection has been successfully established, the 
protocol stacks of the application can start: First the PPP session is 
started, and then it can be used for TCP/IP data traffic.