Linear optical extensions

Overview

An additional topological flexibility offered by the Alcatel-Lucent 1665 DMX is 1+1 protected linear OC-3, OC-12, OC-48, OC-192 optical extensions from the Alcatel-Lucent 1665 DMX ring. Using this capability, Alcatel-Lucent 1665 DMX can support many of the new network configurations desired in evolving access networks.

Description

An access provider can use linear optical extensions from an OC-12/48/192 ring to provide OC-3, OC-12, and OC-48 signals directly to end users. This gives the end users the bandwidth they need for large bandwidth applications, such as video, data, and ATM.

Linear optical extensions can also be used to interconnect SONET subnetworks. Examples include interconnection of two access networks and interconnection between access and interoffice rings. Optical extensions can be used to interconnect Alcatel-Lucent 1665 DMX ring networks to an OC-3, OC-12, or OC-48 terminal, an OC-3, OC-12, OC-48, or OC-192 add/drop network, or another OC-3, OC-12, OC-48, or OC-192 ring. Intra-port hairpins are supported on 1+1 protected interfaces.

The figure below shows an Alcatel-Lucent 1665 DMX OC-48/OC-192 path switched ring with OC-3/OC-12/OC-48 services using linear optical extensions.

Figure 3-38: Linear optical extensions

Configuration advantage

Optical extensions from an Alcatel-Lucent 1665 DMX ring provide fast, reliable transport of voice, video, data, and ATM directly to end users when fiber topologies warrant protected linear (rather than ring) connections.