Cisco Cisco ONS 15454 SONET 48-port DS-3 EC-1 Interface Card Data Sheet
Cisco Systems, Inc.
All contents are Copyright © 1992–2005 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
Page 1 of 1
Data Sheet
Cisco ONS 15454
SONET 48-Port DS-3/EC-1 Interface Card
The Cisco
®
ONS 15454 SONET 48-Port DS-3/EC-1 Interface Card provides a cost-effective, high-density DS-3/EC-1
interface solution for hand-offs and aggregation of large numbers of DS-3 and EC-1 circuits between networks. The
card’s high-density design frees up shelf-assembly slots for additional service-interface types.
Product Overview
The Cisco ONS 15454 SONET 48-Port DS-3/EC-1 Interface Card (Figure 1) provides 48 Telcordia-compliant, GR-499-CORE DS-3 C-Bit or
M2/3 framed or unframed interfaces operating at 44.736 Mbps or GR-253-CORE EC-1 interfaces operating at 51.840 Mbps received over
75
-
ohm coaxial cable. The Cisco Transport Controller craft manager supports manual-mode or automode DS-3 frame-format provisioning,
simplifying the activation of services. DS-3/EC-1 signals are terminated on one of the Cisco ONS 15454 shelf assembly’s high-density
electrical interface adapter (EIA) panels. The DS-3 interface is used for terminating 44.736 Mbps plesiosynchronous transport signals within a
central office or customer premises. Each DS-3 signal is mapped and transported over a single SONET STS-1 in asynchronous DS-3 mapping
mode according to GR-253-CORE encapsulation requirements. The output STS-1 is connected to the Cisco ONS 15454 system’s cross-connect
matrix, allowing the signal to be groomed with other services for transport over a higher-order optical (OC-n) signal. The EC-1 interface is used
for terminating 51.840 Mbps SONET signals, typically from a voice switch found in a central office. Each EC-1 signal is mapped per
GR-253-CORE and transported over a single SONET STS-1. The output STS-1 is connected to the Cisco ONS 15454 system’s cross-connect
matrix, allowing the signal to be multiplexed with other VT1.5- or STS-1-based signals for transport over a higher-order optical (OC-n) signal.
Figure 1
Cisco ONS 15454 48-Port DS-3/EC-1 Electrical Interface Card