Cisco ONS 15454 SDH Specifications Page 152

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
FMEC-DS1/E1 Card
3.14 FMEC-DS1/E1 Card
The ONS 15454 SDH FMEC-DS1/E1 card provides front mount electrical connection for fourteen
ITU-compliant, G.703 E-1 ports. With FMEC-DS1/E1, each E1-N-14 port operates at 2.048 MBits/s
(Mbps) over a 120 balanced cable via two 37-pin DB connectors. Figure 3-20 shows the
FMEC-DS1/E1 faceplate, and Figure 3-21 shows a block diagram of the card.
Caution E1 ports on the DS1/E1 FMEC card can only be connected to Safety Extreme Low Voltage (SELV)
circuits. The E1 interface is not intended for connection to any Australian Telecommunications
network without the written consent of the network manager.
Figure 3-20 FMEC-DS1/E1 faceplate
You can install the FMEC-DS1/E1 card in any EFCA (Electrical Facility Connector Assembly) slot from
Slot 18 to 22 or Slot 25 to 29 on the ONS 15454 SDH. Each FMEC-DS1/E1 card interface features
E1-level inputs and outputs supporting cable losses of up to 6 dB at 1024 kHz.
Figure 3-21 FMEC-DS1/E1 block diagram
61322
FMEC
DS1/E1
Inventory Data
(EEPROM)
61326
Ch 1-7
In/Out DB
Connector
Ch 8 - 14
In/Out DB
Connector
B
a
c
k
p
l
a
n
e
14
Pairs of
common
mode
chokes
14
Pairs of
Transient
Suppr.
14
Pairs of
Imped.
Transf.
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