Avaya 03-300430 User Manual

In a duplicated center stage switch configuration, two EIs are needed in each PN. One resides 
in the PNC’s A side and one in the B side. Note that a PNC designation (A or B) does not 
directly designate the carrier where an EI resides. The active PNC’s EI is the one acting as the 
PN’s Archangel (TDM bus master). This EI’s amber LED should be blinking at a rate of 
2 seconds on and 200 ms off. Whereas, the amber LED on standby PNC’s EI should be off.
A PN (and thus, the EIs contained within it) can be remoted via a DS1 Converter complex. This 
requires that a fiber link (providing connectivity to the remoted PN) be administered with an 
associated DS1 Converter complex. This complex consists of two TN574 DS1 Converter 
(DS1C-BD) circuit packs connected by from 1 to 4 DS1 facilities. 

on page 1181 shows where the DS1 converter complex fits into an 

EI-to-SNI or EI-to-EI fiber link. For more information, see 

FIBER

FIBER

A-PNC

FIBER

FIBER 

FIBER

21

21

10

1 1

1 2 

10

13

13 1 

2 

10 

12

N N

N

N N 

N

N

I I 

I I 

I

I

I

I

I 

I

C C

C C

CARRIER D

SN #1

SN #1

CAB 1

CAB 1

CARRIER D

Slot #

Slot #

EPN EPN

CAB 2

CAB 2

CARRIER B

CARRIER B

CARRIER A 

CARRIER A

CAB 3

CAB 3

Slot #

Slot #

SN #2

SN #2

CAB 2

CAB 2

CARRIER E

CARRIER E

E

E

E

E

E

E

I

I I

I 

I

I

S S 

S 

S S 

S 

S

S S

S

S S 

S

S

N N 

N 

N N 

N 

N

1

2

2

2 10

13

13 2 

1

20

20

B-PNC

METALLIC

METALLIC

CABLE

CABLE

FIBER