User manual

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16
4.1. Flow diagram of Auto TCP/UDP connection function
Modem Power on/
restart
Wait for 20 secs
GPRS attach OK ?
GPRS activation OK ?
Is AutoTCP/UDP
enabled ?
Client mode ?
OK to open pre-defined
TCP/UDP socket ?
TCP/UDP connection
request from allowed
peer?
Open TCP/UDP
socket, connect to
serial port
TCP/UDP
disconnected or
closed ?
Open TCP/UDP
socket, connect to
serial port
TCP/UDP
disconnected or
closed ?
GPRS attach fail ?
GPRS activation
fail ?
GPRS attach fail ?
GPRS activation
fail ?
Stop
Dealy 2
seconds
No
Re-attach GPRS
Re-activate GPRS
No
No
No
NoNo
No
No
No No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes
Yes