Datasheet

Technical Data INSYS GPRS 5.0 serial
78 Mai 06
If the command results in just one action by the µcontroller, the response to the applica-
tion (e.g. OK) is created directly by the µcontroller.
If the GSM/GPRS engine is activated while commands are entered, the response to the
application is determined by the engine; in this case, the µcontroller will just relay them.
During CSD calls or standard GPRS connections the µcontroller relays the data transpar-
ently in both directions.
When using the integrated TCP/IP stacks (TCP transparent) of the µcontroller, the data
from the µcontroller is packed into the according protocol elements, sent via the
GSM/GPRS engine and vice versa.
The periodically performed status queries (AT**GSMREQ) and evaluations of incoming
SMS occur internally on another interface; they will generally not have an effect on the
communication between the application and the INSYS GPRS 5.0 serial.