Cisco Cisco ONS 15454 SONET 56-Port DS-1 E1 Card Data Sheet
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Data Sheet
Cisco ONS 15454 SONET 56-Port DS-1/E1 Card
The Cisco
®
ONS 15454 SONET 56-port DS-1/E1 Card provides a cost-effective, high-density DS-1/E1 interface solution for
hand-offs and aggregation of large numbers of DS-1 and E1 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 56-port DS-1/E1 Card (Figure 1) provides 56 DS-1 interfaces operating at 1.544 Mbps received over 100-ohm
nominal twisted-pair cable or 56 E1 interfaces operating at 2.048 Mbps over 120-ohm nominal twisted-pair cable. The DS-1 and E1 interfaces
are used for terminating transport signals within a central office or customer premises.
Figure 1
Cisco ONS 15454 56-Port DS-1/E1 Electrical Interface
The 56-port DS-1/E1 card supports manual-mode or auto-mode frame-format provisioning, simplifying the activation of services. The DS-1s
support asynchronous and byte-synchronous options for the mapping to VT-1.5. The E1s supports asynchronous mapping to VC-12 SDH. The
following port usage options are available:
•
DS-1 only: All 56 ports are configured for DS-1s (first 28 ports support retiming)
•
E1 only: All 56 ports are configured for E1s (first 21 ports support retiming)