Avaya S8700 - Page 1487

EXP-INTF (Expansion Interface Circuit Pack)
Issue 1 May 2002
8-765555-233-143
Figure 8-35. Direct Connect Configuration with Duplicated PNC
In a duplicated PNC there is an A-side and a B-side PNC. Every EI in this
diagram is labeled with an A or a B designating to which PNC it belongs. Note
that a PNC’s designation (A or B) does not relate directly to the carrier where its
EIS reside. Again, only one of an PN’s EIs can function as the Archangel
(TDM-bus master). An PN’s EI that is:
■ On the active PNC
■ Logically connected to the media server
is the only one that can function in this mode. In normal operation, its amber LED
should be blinking at a rate of 2 seconds on and 200 ms off.
Figure 8-36 on page 8-766 shows the location of EIs in a typical center stage
switch configuration with unduplicated PNC.
PPN
CAB 1
CARRIER D
CARRIER C
EPN
CAB 2
CARRIER B
CARRIER A
EPN
CAB 3
CARRIER B
CARRIER A
FIBER 1 (A)
FIBER 1 (B)
FIBER 2 (A)
FIBER 2 (B)
FIBER 3 (B)
FIBER 3 (A)
E E
E E
E E
E E
E E
E E
I I
I I
3 2
3 2
Slot #
Slot #
Slot #
2 1
2 1
2 1
2 1
Slot #
Slot #
Slot #
I I
I I
I I
I I
(A) (A)
(A) (A) (A) (A)
(B) (B) (B) (B)
(B) (B)