Dialogic 6.2 Manuale Utente
Loop Start Signaling
November 2009
305
Figure 39. FXO Loop Start – Incoming Call Timing Diagram
II
S
D
N
SM
I M
ESSA
GES:
L4L
3mA
L
ER
TI
N
G
_
R
EQ
U
EST
or
L4L
3mPR
O
G
R
E
S
S
_
R
EQ
U
EST
L4
L3mC
O
N
N
EC
T_R
E
Q
U
EST
L3
L4
m
P
R
E
_
S
E
IZE
L3
L4
m
S
E
T
UP
_
IND
II
S
D
N T
IM
E
RS
:
hoo
k
ti
m
er
_
onh
oo
k
_
rl
s
m
o
d
if
ied
_i
n
_
rl
s
_
ti
me
r
hoo
k
ti
m
er
_
onh
k
_
m
o
d_
in
_
rl
s
cr
it
ic
a
l_
tim
e
r
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k
ti
m
er
_
m
ax
m
a
k
e
hoo
k
ti
m
er
_
m
in
m
a
k
e
hoo
k
ti
m
er
_
m
ax
brea
k
hoo
k
ti
m
er
_
m
in
br
e
a
k
fi
rs
t_
in
d
ig
it_
ti
m
e
r
dpt
im
er
_i
m
m
ed_
de
la
y
hoo
k
ti
m
er
_
o
ff
ho
ok
_i
ns
ei
ze
RE
CE
IV
E
HO
OK
S
W
IT
C
H
,
FX
S
:
A
Bi
t
B B
it
T
R
A
N
SMI
T
H
O
OK
SW
IT
C
H
, F
X
O
:
A
Bi
t
B B
it
N
O
TE:
Th
is
di
agram
i
s
d
e
s
ig
ned
t
o
gi
ve
t
h
e
r
e
ade
r a
g
ene
ra
l u
nde
rs
ta
n
d
ing
of
t
he
s
equ
en
c
e
o
f
eve
n
ts
f
o
r t
h
is
robb
ed
bi
t p
rot
oc
ol
ove
r t
ime.
T
h
e
t
im
e
rs
a
nd
s
pac
in
g
on
t
h
is
g
rap
h
ar
e
no
t
pr
o
port
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nal
t
o
t
h
e
a
c
tu
a
l e
v
en
ts
t
h
a
t
oc
c
u
r.
Rev
is
e
d 10
-N
o
v
-9
8
Re
v
is
io
n
1
.3
DP
Di
g
it
"
2
"
D
P
D
ig
it
"
1
"
RECE
IVED BITS,
TR
ANSMITTED
Revis
ed