Server Alarms - Avaya Support

EXP-INTF (Expansion Interface Circuit Pack)
Each PN in a direct-connect configuration must be connected to the other PNs through a fiber
link. Each PN has one EI that functions as an Archangel. This EI must be connected with fiber
to an EI. If an EI is functioning as an Archangel (bus master), its amber LED will be flashing at a
rate of 2 seconds on and 200 ms off.
Figure 61: Direct Connect Configuration with Duplicated PNC shows the location of EI circuit
packs in a typical duplicated PNC, direct-connect configuration.
Figure 61: Direct Connect Configuration with Duplicated PNC
Slot #
Slot #
FIBER 1 (A)
E E
I I
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 a PN’s EIs can
function as the Archangel (TDM-bus master). A PN’s EI that is:
● On the active PNC
1
E E
I I
1
2
2
Slot #
Slot #
FIBER 1 (B)
FIBER 3 (B)
EPN
CAB 2
CARRIER B
CARRIER A
FIBER 3 (A)
E E
I I
(B) (B)
2
E E
I I
2
3
(A) (A)
3
PPN
CAB 1
CARRIER C
CARRIER D
FIBER 2 (A)
EPN
CAB 3
CARRIER B
CARRIER A
FIBER 2 (B)
● Logically connected to the 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.
Slot #
Slot #
E E
I I
(B) (B)
(B) (B)
1
E E
I I
(A) (A) (A) (A)
1
2
2
Communication Manager Release 5.0 Issue 4 January 2008 801