Insys GPRS 5.0 serial 11-02-01-03-10.014 Manuale Utente
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11-02-01-03-10.014
INSYS GPRS 5.0 serial
Information Regarding GPRS
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The transmitted amounts of data not only consist of the sum of the application user
data. They are rather packed into TCP/IP packets, which also generate network loads
and therefore add to the total costs.
It is also important to select parameters adjusted to the application to form TCP
packets:
¾
and therefore add to the total costs.
It is also important to select parameters adjusted to the application to form TCP
packets:
¾
Maximum size (the packet is sent when this maximum size is reached)
¾
Maximum waiting time (the current packet is sent when the time has expired, see
AT**TCPAGG)
8.2
Network Design
The GPRS system is intended as additional service within the scope of the GSM system.
The GPRS data exchange (GPRS = General Packet Radio Services) runs packet-oriented,
based on the Internet Protocol (IP).
The following figure shows the basic design, where the application has to provide the
TCP/IP/PPP stacks. This is required when using the standard GPRS functionality of the i–
modul GRPS 3.0 serial.
The GPRS data exchange (GPRS = General Packet Radio Services) runs packet-oriented,
based on the Internet Protocol (IP).
The following figure shows the basic design, where the application has to provide the
TCP/IP/PPP stacks. This is required when using the standard GPRS functionality of the i–
modul GRPS 3.0 serial.
Mobile Application
TCP
PPP/IP
PPP/IP
GPRS carrier
IP
GPRS carrier
Router
(GGSN)
IP
IP
Application server
TCP
IP
GPRS network radio components and internal GPRS network
IP
GPRS engine
Application
Remote terminal