CHAPTER 6 NDA-24305
Page 216
Revision 1.0
VIRTUAL TIE LINE
• Setup/Cancel Protocol for Virtual Tie Line
2. Operating Procedure
No manual operation is required.
PBX
Setup
S
E
T
U
P
(
B
)
C
A
L
L
P
R
O
C
PBXISDN
C
ON
N
A
C
K
I
A
I
C
L
F
C
O
N
N
A
C
M
D
I
S
C
R
E
L
C
OM
P
R
E
L
D
I
S
C
R
E
L
C
OM
P
R
E
L
S
E
T
U
P
(
B
)
C
ON
N
A
C
K
C
O
N
N
A
N
D
R
L
G
Talk/Communicate
Cancel
Virtual
Tie Line
(CCIS No.7)