Datasheet

INSYS GPRS 5.0 Ethernet GPRS General
Dez-06 51
6 GPRS General
6.1 Application Notes
When using data services via GPRS, providers offer various contract options, espe-
cially regarding the pricing (basic price, basic data volume, billing unit). Please
contact the according providers for further information.
In general, GPRS providers bill every time a connection is terminated and daily at
midnight (the provider will terminate the connection at this time), and all accu-
mulated data are rounded to the billing unit.
We therefore recommend selecting a rate which offers the smallest possible bill-
ing unit.
Many GSM/GPRS providers offer so-called M2M rates, which have an exact 1 kb
billing matrix.
Note
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.