DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-36Fault 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
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