user manual

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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 3 Electrical Cards
3.11 FMEC E1-120PROA Card
3.11 FMEC E1-120PROA Card
The ONS 15454 SDH FMEC E1-120PROA card provides front mount electrical connection for 126 ITU
compliant, G.703 E-1 ports. With the FMEC E1-120PROA card, each E1-42 port operates at 2.048 Mbps
over a 120-ohm balanced interface. Each Molex 96-pin LFH connector supports 21 E1 interfaces.
Figure 3-10 shows the FMEC E1-120PROA faceplate and block diagram.
Caution This interface can only be connected to SELV circuits. The interface is not intended for connection to
any Australian telecommunications network without the written consent of the network manager.
Figure 3-10 FMEC E1-120PROA Faceplate and Block Diagram
You can install the FMEC E1-120PROA card in the EFCA in the four far-left slots (Slots 18 to 21) on
the ONS 15454 SDH. Each FMEC E1-120PROA card port features E1-level inputs and outputs
supporting cable losses of up to 6 dB at 1024 kHz.
3.11.1 FMEC E1-120PROA Connector Pinout
Use Table 3-12 to make the connection from the E-1 96-pin connector for Ports 1 to 21 to the external
balanced 120-ohm E-1 interfaces.
21 TX 22 N 45 RX 22 N 69 NC 93 NC
22 TX 22 P 46 RX 22 P 70 NC 94 NC
23 NC 47 NC 71 NC 95 NC
24 NC 48 NC 72 NC 96 NC
Table 3-11 E-1 Interface Pinouts on Ports 22 to 42 (continued)
Pin No.
Signal
Name Pin No.
Signal
Name Pin No.
Signal
Name Pin No.
Signal
Name
Inventory Data
(EEPROM)
134372
6 Interface
Connectors
B
a
c
k
p
l
a
n
e
4 x 42
Pairs of
Trans-
formers
Protect
Switch
Relay
Matrix
FMEC E1-120PROA
PORT
22-42
PORT
1-21
PORT
22-42
PORT
1-21
CLEI CODE BARCODE
PORT
22-42
PORT
1-21