DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-36
Fault isolation procedures
2
10. Replace faulty component(s) and reconnect the original fiber. Be sure to
reconnect the fibers properly as noted in Step 7 in this
‘‘Manual loopback
procedure’’
section.
11. Release the Expansion Interface circuit pack or Switch Node Interface
circuit pack (release board UUCSS).
12. If problems still exist after the Manual Loopback Procedure indicates that
both Expansion Interface circuit packs and both lightwave transceivers are
healthy, verify that each optical fiber is connected to a transmitter at one
end and a receiver at the other.
DS1 interface cable pinout
Table 2-11
shows the pin assignments for the cable connecting the TN1654 DS1
CONV circuit pack to DS1 facilities.
Table 2-11.
DS1 Interface Cable Connectors
Lead
Desig.
50-Pin
Connector
Pin #
15-Pin
Connector
Color
Pin
Color
Plug 04
Facility D Line In
LID
38
W-BL
11
W-BL
Facility D Line In
LID*
13
BL-W
03
BL-W
Facility D Line Out
LOD
39
W-O
09
W-O
Facility D Line Out
LOD*
14
O-W
01
O-W
Plug 03
Facility C Line In
LIC
41
W-G
11
W-G
Facility C Line In
LIC*
16
G-W
03
G-W
Facility C Line Out
LOC
42
W-BR
09
W-BR
Facility C Line Out
LOC*
17
BR-W
01
BR-W
Plug 02
Facility B Line In
LIB
44
W-S
11
W-S
Facility B Line In
LIB*
19
S-W
03
S-W
Facility B Line Out
LOB
45
R-BL
09
R-BL
Facility B Line Out
LOB*
20
BL-R
01
BL-R
Plug 01
Facility A Line In
LIA
47
R-O
11
R-O
Facility A Line In
LIA*
22
O-R
03
O-R
Facility A Line Out
LOA
48
R-G
09
R-G
Facility A Line Out
LOA*
23
G-R
01
G-R
Continued on next page