System Functions and Features as of I7.9
62
Identification Elements
sy
d-
020
0/3.
0
– I7.
9
– 1
1
.2009
PISN - Internal Call with Overflow Routing
User C (340) on PINX 2 calls user A on PINX 1 via PINX 3 as all the available communi-
cation channels between PINX 2 and PINX 1 are busy. PINX 3 belongs to Region 60.
Fig. 21
Example 2: User C calls user A, overflow routing (excerpt from
)
Tab. 15
Example 2: Creating and presenting user C’s CLIP number
Step
CLIP number
NPI
TON
Description
1
340
PNP
level 0
User C
→
PINX 2
• There is no suitable DDI number.
2
50340
PNP
level 1
PINX 2
→
PINX 3
3
50340
PNP
level 1
PINX 3
• There is no suitable DDI number.
4
50340
PNP
level 1
PINX 3
→
PINX 1
5
340
PNP
level 0
PINX 1
• The system’s own regional prefix is deleted
• TON is adapted.
6
340
PINX 1
→
User A
• Presentation on the system terminal
#¬
!
3OURCE¬0).8
$ESTINATION¬0).8
4RANSFER¬0).8
2EGION¬
2EGION¬
2EGION¬
HAZAAENA
0).8¬
0).8¬
PINX 2
