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4. The XC640 cross-connect and timing units support ONNS applications.
5. It is recommended to use
two
XC640 cross-connect and timing units. Thus, both
the cross-connnect as well as the timing function are automatically 1+1 equipment
protected. However, an LXC configuration with a single, but unprotected XC640
cross-connect and timing unit is also possible.
LOXC configuration rules
LOXC lower order cross-connect units must be installed in dedicated universal slots or
slot combinations. Moreover, which universal slots or slot combinations support the
lower order cross-connection functionality also depends on the maximum switching
capacity of the system.
These are the supported slot combinations for the usage of lower order cross-connect
units ((W): worker; (P): protection):
Max. switching capacity
Slot assignment
LOXC (W)
LOXC (P)
Remarks and additional equipage guidelines
LXC160
37
39
The slots 36 and 38 must remain empty.
LXC320
Option 1
(1)
4
19
The slots 3 and 18 must remain empty.
The slots 2 and 17 are reserved, i.e. may be used in case a
future in-service upgrade is planned towards LOXC units
which occupy 2 or 3 slots, respectively.
Option 2
17
19
Alternative equipage if slot 4 is occupied.
The slots 16 and 18 must remain empty.
Option 3
(2)
37
39
The slots 36 and 38 must remain empty.
Figure 5-14 LXC configuration rules with XC640
21
1
9
40
31
22
2
12
10
32
23
3
13
33
24
14
34
25
5
15
35
26
6
16
36
27
7
28
8
User panel
front view
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
CTL (P) slot
Univ
ersal slot
CTL (W) slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
Univ
ersal slot
XC (W) slot
XC (P) slot
Univ
ersal slot
Univ
ersal slot
11
19
17
Univ
ersal slot
Univ
ersal slot
39
37
Univ
ersal slot
Univ
ersal slot
38
Univ
ersal slot
18
Univ
ersal slot
4
Univ
ersal slot
Power, software and circuit pack installation
Configuration rules
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5-48
Lucent Technologies - Proprietary
See notice on first page
365-374-187
Issue 1, December 2005