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DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN 555-233-121
2
SREPN Maintenance
SREPN connections
Figure 2-7
Transmit (TX)
and receive (RX)
cydfsrn2 KLC 011199
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 power failure alarm
lead
SRSwitch signal leads
Figure 2-7. Detailed SRP DS1-CONV connections
shows the hardware connections in the DS1-CONV system.
DS1
9
Wall field
D
S
S
N
1
I
C
5
D
S
S
N
1
I
C
S.R.
switch
fiber pair
B-carrier
CSU
4
5
2
5
A-carrier
CSU
3
8
B
A
7
2
SRP
1
EI
AUX
A
B
Collocated equipment
4. SREPN AUX connector B25A 25-pair cable; max.
length = 50 ft (15 m). Refer to the
connections''
-48V to SRSwitch through wall field
SRP Alarm
SRSwitch signal leads
5. TN1654 (DS1C) can be used only in combination
with another TN1654.
6. Fiber transceivers (9823A - multimode)
7. 14-in. (36 cm) Y-Cable (Comcode 848101440)
8. Fiber optic cable pairs
9. Release 9r switch
November 2000
SREPN cabinets
D
E
S
I
5
6
1
C
6
T
D
E
N
S
I
5
7
1
7
C
5
C
6
6
AUX
8
System
Access
Terminal
''MDF
in
Chapter
1:
Issue 2
2-11
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