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GL100
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8 -
GT300
@T
rack
Air Interface Protocol
Co
mm
and
Ackno
wl
edg
ement
T
er
m
in
al
Backend
Server
Report
Report
Report
Figure
1
: @Tracker
Protoc
ol messag
es flow
Note
: The H
eart
Be
at Mes
sage (
G
THBD
, refer
to
ch
ap
te
r 3.4)
is
exc
ep
ti
onal.
1
...
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7
8
9
10
11
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