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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter3 Electrical Cards
3.4.1 E3-12 Card Functionality
Figure3-3 E3-12 Card Faceplate and Block Diagram
3.4.1 E3-12 Card Functionality
You can install the E3-12 card in Slots 1 to 5 and 14 to 17 on the ONS 15454 SDH. Each E3-12 port
features ITU-T G.703 compliant outputs supporting cable losses of up to 12 dB at 17184 kHz. The
E3-12 card supports 1:1 protection.
Note The lowest level cross-connect with the XC10G card is STM-1. Lower level signals, such as E-1, DS-3,
or E-3, can be dropped. This might leave part of the bandwidth unused. The lowest level cross-con nect
with the XC-VXL-10G card and the XC-VXL-2.5G car d is VC-12 (2.048 Mbps).
Note When a protection switch moves traffic from the E3-12 working/active card to the E3-12 p rotect/standby
card, ports on the now active/standby card cannot be taken out of service. Lost traffic can result if you
take a port out of service, even if the E3-12 active/standby card no longer carries traffic.
BTC
ASIC
E3
ASIC
134378
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