OMS 3250

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OMS3250Product DescriptionForewordThe product information contained herein is independent of product release and does not referto a defined product release.The technical information provided in this document is offered, in good faith, as an indication ofMarconi's intention to evolve its Optical Networks portfolio to meet the demands of themarketplace. Unless commercially agreed, the information contained herein should not to betaken as implying any commitment or obligation on the part of Marconi.For details concerning availability and supported features please refer to the SDH Roadmap.Issue 1 Copyright – Refer to Page 2 Page 9 of 74
Product DescriptionOMS32501 INTRODUCTIONThe OMS3250 is a compact SDH/OTH DXC4/4 product which evolved from the MSH2K SDHDXC. A combined ODU and VC-4 switch fabric enables both wavelength services and higherorder synchronous traffic to be switched simultaneously in the same network element. Inaddition the integration of a LO-VC switch permits the use of OMS3250 as a compact and costeffectivesolution for those network nodes where, in conjunction with a wide HO-VC switch, thecapability to groom a percentage of the traffic down to VC-3/VC-2/VC-12 level is required.To cope with the more data-centric network, Ethernet interfaces and Layer 2 Switching areprovided. Mapping is via GFP and LCAS can be used to manage the bandwidth. Data transportcapabilities are further enhanced by the provision of SAN interfaces.The OMS3250 incorporates a fully distributed, network aware control plane to supportadvanced, dynamic network architectures that require fast network restoration and customerdriven routing. Both SDH management and the emerging GMPLS (Generalised Multi-ProtocolLabel Switching) control mechanisms are included in the realisation.This document is intended to provide an overview of the product.This product is based on advanced electronic technology and provides a multi-fabric product(i.e. support for TDM and Data). The OMS3250 can support a number of high speed optical andelectrical interfaces and provide a 2048 x 2048 STM-1 equivalents switching capacity at HO-VC(i.e. 320G @ VC-4/4nc) with an optional LO-VC switching capability (Nx10G @ VC-3/2/12). Theproduct is optimised to provide a high density compact DXC 4/4 at 2.5 Gbit/s and 10 Gbit/sinterface rates.Additionally the OMS3250 includes switching of optical ODUk (k=1,2) containers and can beequipped with OTM-0.k/1r.k interfaces (k=1,2 according to G.709).Marconi OMS3250 is designed to support the migration of the transport network to the OpticalTransport Network (i.e. OTN). Marconi has combined the SDH and OTN layers in the sameequipment to provide the grooming and consolidation at the SDH layer with the flexibility oftransparent services offered by the G.709 OTN layer. The possibility to perform ODUk and VC-nswitching into a single switch platform, permits its use in a pure SDH network or in a pure OTNone or to merge in the same equipment an OTN and SDH network element. Without this uniquefunctionality it would be necessary to build two layers in the network: one to consolidate andgroom SDH traffic and one to switch in the OTN/ODU layer, each layer with its own nodesdedicated to provide flexibility. With OMS3250, the same network element can be used toassure flexibility to both the layers.This functionality, in addition to other offered features (e.g. map VC-4 based SDH traffic intoODUk, ODUk multiplexing and transparently map CBR2G5/CBR10G into their respective ODUkcontainers), makes the OMS3250 an advanced gateway to the optical layer that can be used tobuild flexible networks and offer a very competitive set of services in a cost effective andefficient manner.Combined with the possibility to have in-service scalability to enhanced switch platforms (i.e.OMS3250 can be upgraded in service to a port subrack for the OMS3260 (960 Gb/s) crossconnect), OMS3250 offers a genuine future-proof network architecture, which can be scaled tomeet the demands of tomorrows' network.The OMS3250 shares interfaces and common units with the MSH64C/OMS3240 (SDH/OTHCompact Add-Drop Multiplexer) and MSH-ES/OMS3260 (SDH/OTH very high capacity cross-Page 10 of 74 Copyright – Refer to Page 2 Issue 1
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