Cisco Systems MGX 8220 manual BNM-T3/E3

2-15
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter Core Module Overview
BNM-T3/E3
The broadband network modules-T3E3 (BNM-T3E3) is a two-card set consisting of a BNM-T3 or E3
front card and a T3E3-D-BC or T3E3 - B-B C back card. Either back card can b e u sed w i th ei th er f ron t
card except that the BNC clock connector only works for E1 clock sources. The shelf may contain a
single BNM card set or a dual (redundant) card set. The cards are installed in slot 1 and/or slot 2.
An illustration of the BNM-E3/T3 card set is shown in Figure2-13.
Figure2-13 BNM-T3/E3 Cards
ACT
STBY
FAIL
PORT
BNM
ACO
HIST
T3
DC-A
DC-B
MIN
MAJ
ACO
HIST
• • • • •
••••••••
•••••••
T3E3-B
RX
TX
A
L
A
R
M
R
E
L
A
Y
S
E
X
T
T
M
G
T3 Front card
ACT
STBY
FAIL
PORT
BNM
ACO
HIST
E3
DC-A
DC-B
MIN
MAJ
ACO
HIST
• • • • •
E3 Front card Back card
B version
used for E1
clock timing
input
••••••••
•••••••
••••••••
•••••••
T3E3-D
RX
TX
A
L
A
R
M
R
E
L
A
Y
S
E
X
T
T
M
G
Back card
D version
used for T1 and
E1 clock timing
input
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