Lucent Technologies Release 7 用户手册
DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Architecture
1-15
Port Network Connectivity (PNC)
1
Figure 1-5.
Center Stage Switch Configurations (Simplex Examples)
EI
EPN
EI
EI
EPN
EPN
EI
EI
EI
EI
EI
EI
EI
EI
EPN
EPN EPN EPN
EPN
EPN
EPN
EPN
Inter-switch
node
fibers
1
carrier
node
Switch
* *
*
1 2 3 4 5 6 7 8 9 10 11
12
13
14
15
16
17
18
20 21
Slot number
19
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
C
S
N
C
S
N
C
S
N
C
E
E
2
1 2 3 4 5 6 7 8 9 10 11
12
13
14
15
16
17
18
20 21
carrier
node
Switch
Slot number
19
* *
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
S
N
I
CSS with two switch nodes
EI
EPN
EI
EI
EPN
EPN
PPN
EI
EI
EPN
EI
EI
EPN
EPN
EPN
EI
EI EI
EI
EPN
EPN
EPN
*
*
*
C
N
S
C
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
I
N
S
19
Slot number
Fiber
links
not
used
Switch
node
carrier
21
EI
EPN
EI
EPN
EI
EPN
EI
EI EI
EI
EPN
EPN
EPN
EPN
EPN
EI
EI
EI
EPN
EPN
EPN
EI
5
4
3 20
18
17
16
15
14
13
12
11
10
9
8
7
6
2
1
CSS with one switch node
EI
EPN
EI
EI
EPN
EPN
PPN
EI
EI
EPN
* The PPN EI or a DS1C circuit pack may reside in this slot
** A DS1C circuit pack may reside in this slot