Manual Datafox Evo 4.3 Page 58 Date: 27.12.2017 V 04.03.09.XX
5.6.6.1. Communication state
The state of GPRS-/GSM-connection you can always see in the state bar on the display.
Initialization of the software
Initialization of the modem and SIM-card check
if PIN necessary, sending of the PIN
if PUK necessary, sending of the PUK
dilated initialization of the modem
GPRS Standby, Initialization of the GPRS connection after the first records
connection to Provider (Attach)
GPRS standby (waiting for next data/records)
send data to Server (HTTP)
Wait for quitting from server (HTTP)
recive data from server (TCP/IP)
send data to server (TCP/IP)
Braek between tries to connect the server, active mode
timeout after failed connection , to 15 minutes
timeout after failed connection Provider, to 15 minutes.
count of the connection attempt is end
on the Device is the encryption active, but not on the server
battery is down, to disable Modem.
impossible connect to the provider or bzw. Roaming impossible