The Cisco ONS 15216 4 Channel Optical Add/Drop Multiplexers (OADMs) are a set of passive OADMs that allow the Cisco ONS 15454 Multiservice Transport Platform (MSTP) to address the edge of the optical network in a cost-effective manner without sacrificing operational ease of use. The Cisco ONS 15216 4 Channel OADMs are well suited to applications with minimal wavelength requirements and tight space and power constraints, such as cell site and customer premises terminations. Ten models are available, covering a 40-channel 100-GHz channel plan.

Applications

The Cisco ONS 15216 4 Channel OADM supports standard network topologies such as point-to-point and ring. With the introduction of omnidirectional and colorless reconfigurable optical add-drop multiplexer (ROADM) functionality on the Cisco ONS 15454 MSTP, the combined products allow additional network topologies, such as the termination of a spur or rings, originating on a Cisco ONS 15216 4 Channel OADM, into the colorless ports of the ROADM node (Figure 2). This configuration does not consume a ROADM degree, allowing the node to scale beyond eight directions of connectivity in a mesh-ROADM application.

Another application for the Cisco ONS 15216 4-channel OADMs is as the add/drop stage of a single-module ROADM node. When only a small number of channels are required to add/drop at a ROADM node, using one or more 4-channel OADMs can save costs and space compared to the typical configuration using the Cisco ONS 15216 Mux/Demux 40 Channel Patch Panel. When the number of add/drop channels exceeds the deployed capacity of the OADMs, additional units can be added or replaced with a Cisco ONS 15216 Mux/Demux 40 Channel Patch Panel without affecting the service of existing pass-through channels.

Edge Mounting Bracket

A Cisco ONS 15216 4 Channel OADM occupies a single position in the Cisco ONS 15216 Edge Mounting Bracket. The mounting bracket occupies one rack unit (1RU) and mounts into a standard-19-inch rack. It has four positions for mounting OADMs.

Features and Benefits

The Cisco ONS 15216 4 Channel OADM provides the following customer benefits:

●   Cost-effective DWDM add/drop capability

●   Best-in-class operational efficiency, with zero electrical power requirements

●   High port density: four OADMs can be mounted in a 1RU bracket

●   Low optical insertion loss for improved distance and performance

●   USB port for passive inventory management

●   Cisco Transport Controller (CTC) manageability for advanced fault isolation

●   CTP support for efficient network design verification