Avaya DEFINITY SERIES - Page 65

DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-11SREPN connections
2
Figure 2-7 shows the hardware connections in the DS1-CONV system.
Figure 2-7. Detailed SRP DS1-CONV 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 power failure alarm
lead
■ SRSwitch 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. 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
cydfsrn2 KLC 011199
A
A
B
B
D
S
1
C
E
I
D
S
1
C
E
I
T
N
7
7
5
C
B-carrier
A-carrier
CSU
CSU
Wall field
System
Access
Terminal
D
S
1
C
S
N
I
S
N
I
D
S
1
C
SRP
SREPN cabinets
DS1
5
5
2
Collocated equipment
AUX
S.R.
switch
EI AUX
9
1
2
3
4
5
5
5
6
6
6
6
7
8
8
Transmit (TX)
and receive (RX)
fiber pair