Dialogic 6.2 - Manual (Page 312)

Loop Start Signaling
November 2009 312
Figure 44. FXS Loop Start – Outgoing Call Timing Diagram
II
SD
N
SM
I M
ESSA
G
E
S
:
L
4L3
m
C
ALL
_
R
E
Q
U
EST
L
3L4
m
P
R
O
G
R
E
S
S
L3L
4m
SEI
Z
E
_C
O
M
P
L3L
4m
C
O
N
N
EC
T
II
S
D
N
T
IM
E
R
S
:
a
n
s
w
er
_t
im
e
r
h
ook
ti
m
e
r_
of
fh
o
o
k
_an
s
w
e
r
h
ook
ti
m
e
r_
onh
k
_
m
o
d
_ou
t_
rl
s
d
p
ti
m
e
r_
end
_di
al
_
pau
s
e
d
p
ti
m
e
r_
in
te
rd
ig
it
d
p
ti
me
r_
ma
ke
dp
ti
m
e
r_
b
rea
k
fi
xed_
pau
s
e
_t
im
er
g
lar
e
_de
te
c
ti
on_
ti
mer
R
E
CE
IV
E
HO
OK
S
W
IT
CH,
FX
O:
A
Bi
t
B B
it
T
R
A
N
S
M
IT
H
O
O
K
S
W
IT
C
H
,
F
X
S
:
A
Bi
t
B B
it
N
O
T
E
:
Th
is
di
agr
a
m
i
s
de
s
ig
ned
t
o
g
ive
th
e r
e
ade
r a
ge
ner
a
l
unde
rs
ta
n
d
in
g o
f
th
e
s
equ
enc
e
of
ev
ent
s
f
o
r t
h
is
r
o
bbe
d
b
it
pr
o
toc
ol
ov
er
t
im
e
.
T
he
ti
mer
s
an
d
s
p
ac
ing
on
t
h
is
graph
ar
e
no
t
pr
op
or
ti
on
al
t
o
t
h
e
a
c
tual
eve
n
ts
t
h
a
t
oc
c
u
r.
R
e
vi
s
ed 10-
N
o
v-
9
8
R
e
vi
s
ion
1.
3
DP
D
ig
it
"
2
"
D
P
Di
gi
t
"1
"
REC
EIVED BITS,
TRANSM
ITT
E
D
Revised