Alcatel 1642 Edge Multiplexer
155-to-622-Mbit/s Alcatel OMSN for customer premises & public/private companies
The Alcatel 1642 EM is a multiservice CPE that highlights Ethernet/Fast Ethernet ports with Layer 2 Ethernet switching functions to enable both point-to-point (E-line) and multipoint (E-LAN) Ethernet services.
The Alcatel 1642 Edge Multiplexer (EM), part of the Alcatel Optical Multiservice Node (OMSN) family, is an ideal spacesaving, next generation multiservice building block for customer premises and business locations. It enables business, residential and mission-critical communications in the metro network, providing unmatched performance for its size.
The primary applications for the Alcatel 1642 EM product are found in the following areas:
>Delivery of QoS-based Ethernet and TDM services to customer premises and business locations
>Local and metropolitan rings
>Point-to-point links with intermediate drop/insert and/or regeneration stations
>Always-on, mission-critical communication
COST-EFFECTIVE CPE FOR MULTISERVICE OPTICAL ACCESS
The extension of SDH benefits to customer premises and business locations has become an established concept. Installation of compact optical equipment (CPE) for leasedline and public/private-company services to medium and large businesses is a reality in many access networks. The benefits can be summarized in the extensive end-to-end path control and monitoring capabilities offered by SDH networks. It is worthwhile adopting SDH technology even for the
delivery of Ethernet services, bringing the benefits of SDH to the transport of data services. The variety of existing and future interfaces and services can be easily mapped into the SDH transport layer, adding the reliability and flexibility of SDH transport and providing a future-safe investment in new services.
ETHERNET VPN SERVICES AND LAN INTERCONNECTION
Data-aware features integrated into the Alcatel OMSN family through integrated service adapter (ISA) plug-in modules fully address the technical requirements of today’s service providers, as well as the expected need to provide telecom operators with the latest, future-safe optical provisioning platforms.
The Alcatel 1642 EM features an Ethernet/Fast Ethernet card for the transport of reliable frame-based data interconnections in point-to-point, point- to-multipoint and shared-bandwidth ring applications. The capability to map Ethernet flows into multiple SDH resources using virtual concatenation dramatically boosts the survivability of the user data connection in the event of a network failure. ISA-ES1 blades can be hosted in the Alcatel 1642 EM and enable carrier-class Ethernet VPN and aggregation services
in the metro network.
Alcatel 1642 Edge Multiplexer — 155-to-622-Mbit/s Alcatel OMSN for customer premises & public/private companies
Beyond mapping business and industrial Ethernet flows onto SDH network resources through standardized mechanisms such as GFP/LAPS, VCAT and LCAS (as specified in ITU G.7041, ITU G.7042 and ITU G.707), the ISA-ES1 series cards introduce wire-speed classification, policing and scheduling capabilities on a carrier-class Ethernet switching blade.
Per-customer traffic flow management with low bandwidth granularity, traffic segregation and per-flow QoS mechanisms are supported to enable service-oriented Ethernet networking. Two different blade options are available for the ISA-ES1 to meet the required capacity and features, providing the best cost-optimized Ethernet solution for different networking applications:
>ISA-ES1 3-port version, offering 2 x FE electrical plus 1 x FE optical ports on board, providing 155 Mb/s backpanel capacity and featuring GFP, VCAT, LCAS, VLAN/Q-in-Q with QoS support.
>ISA-ES1 8-port version, offering 8 x FE electrical ports on board, with the same features as the 3-port version.
Through the integration of Ethernet-switching capability on Alcatel 1642 EM Ethernet cards, not only point-to- point, but also point-to-multipoint applications and sharedbandwidth rings can be implemented. The resources required to connect several customer and business sites to provide Ethernet LAN interconnection services are drastically reduced.
Network-infrastructures owner must manage and transport new Ethernet-based revenue-generating value added services (VAS) at the lowest cost per bit, especially in the access network, where bandwidth is limited. The shared-bandwidth ring allows sharing of bandwidth between multiple users who are accessing the ring, using, for example, only 1 x VC-3 on each link for Ethernet traffic and leaving enough bandwidth for other revenuegenerating services.
The Alcatel 1642 EM’s Ethernet card gives service providers and public/private companies an optimized solution for providing Ethernet LAN interconnection services with incremental investments, exploiting the existing SDH infrastructure, thus avoiding the need to deploy a new overlay infrastructure, ultimately reducing both CAPEX and OPEX.
COMPACT, FLEXIBLE, DATA-ORIENTED, FUTURE-SAFE
The Alcatel 1642 EM is based on 2 x STM-1/4 (155 to 622 Mbit/s) line interfaces, up to 18 STM-1 equivalents full non-blocking HO SDH matrix and 12 STM-1 equivalents full non-blocking LO SDH matrix, clock reference and equipment control functions, all concentrated in a 1-slot wide compact card.
The equipment’s shelf is physically formed in four parts: a middle-lower area where a main control board holds an STM-1/4 ADM, the upper part with up to four upper tributary boards and the left and right parts hosting the fan and power-access board.
Figure 1- Positioning the Alcatel 1642 Edge Multiplexer in the Network
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