DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-782EXP-INTF (Expansion Interface Circuit Pack)
9
Figure 9-37. Direct Connect Configuration with Simplex PNC
Each Port Network in direct connec t configurations must b e connected to eac h
other port network through a fiber link. Each EPN has one EI that functions as an
archangel. This EI must be connected with fiber to an EI located in the PPN. If an
EI is functioning as an archangel (bus master), its yellow led will b e flashing at a
rate of 2 seconds on and 200 ms off.
Figur e 9-38 shows the location of EI circuit packs in a typical duplicated PNC,
direct-connect c onfiguration.
Slot #
Slot #
Slot # Slot #
2
2
2 1 2 1
CABINET 2 CABINET 3
CARRIER A CARRIER A
CABINET 1
CABINET 1
EPN
EPN
E
E
E E E E
I
FIBER LINKS
I
I I I I
PORT CARRIER
PORT CARRIER
PPN
PPN