DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-10SREPN connections
2
Figure 2-6 shows the hardware connections in the direct fiber system.
Figure 2-6. Detailed SRP direct fiber connections
Figure Notes:
1. Fiber transmit (TX) and receive (RX)
pairs for A and B carriers.
2. SRP AUX B25A 25-pair cable; max.
length = 50 ft (15 m):
■ Major SRP power failure alarm lead
■ Remote restore signal leads
3. TN2301 - SRSwitch B25A 25-pair
cable; max. length = 50 ft (15 m):
■ -48V from SREPN (through wall
field)
■ SRSwitch -48V major SRP power
failure alarm lead
■ SRSwitch -48V signal leads
4. SREPN AUX connector B25A 25-pair cable; max.
length = 50 ft (15 m). Refer to the ‘‘MDF
connections’’ in Chapter 1:
■ -48V to SRSwitch (through wall field)
■ SRP Alarm
■ SRSwitch signal leads
5. Fiber transceivers (9823A)
6. 14-in. (36 cm) Y-Cable (Comcode 847245750)
7. Fiber optic cable pairs
8. Release 9r switch
cydfsrpn KLC 011199
A
B
E
I
E
I
T
N
7
7
5
C
B-carrier
A-carrier
AUX
System
Access
Terminal
E
I
E
I
SRP
SREPN cabinets
5
5
2
Collocated equipment
1
2
3
4
8
S.R.
switch
A
B
5
5
7
6
EI
AUX
Transmit (TX)
and receive (RX)
fiber pair
Wall field
LGIU
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