The ACE-2002E multiservice ATM access unit and NTU can be used as a carrier-owned demarcation device or as a corporate concentrator connected to the public ATM network.
As a demarcation device, the ACE-2002E multiservice ATM access unit enables carriers and service providers to define the boundary between their ATM-based public services and the customer private network (customer-located equipment - CLE). A clear demarcation point at the customer premises increases service reliability, improves network efficiency and ensures end-to-end QoS support.
The ACE-2002E multiservice ATM access unit can be used for a combination of legacy services, such as voice, LAN and ATM, or as a demarcation device for native ATM traffic.
The ACE-2002E has built-in features that enable the extension of ATM network facilities up to the customer premises. These features support various ATM services, such as advanced traffic management (policing, scheduling and shaping) and full I.610 OAM (Operation, Administration and Maintenance) flow support. In addition, the wide range of ATM modules further enhance the flexibility of service offerings.
When used as an interworking device, the ACE-2002E enables smooth migration of legacy equipment such as PBXs and routers operating over ATM networks. Using multiport modules and three user slots, the ACE-2002E can be used as a concentrator for medium to large corporations. The unit enables the most efficient utilization of public ATM services for transporting different types of corporate traffic, including ATM.
The additional interfaces and aggregation abilities of ACE-2002E also enable cellular operators to reduce the number of radio access links needed for connecting cellular base stations to their network, thus cutting down transport costs.
ACE-2002E supports up to 1,024 connections (VPC and/or VCC), enabling both NNI and UNI addressing with full bit range of VPI/VCI fields. In addition, full switching capability is available for each VC or VP (from either the user or the network) to obtain maximum flexibility in connection assignment.
To enhance carriers’ service offerings, the ACE-2002E multiservice ATM access unit supports VP tunneling. This enables bundling multiple VCCs into a single VPC while maintaining all the VCC QoS characteristics and I.610 OAM capabilities at F4 and F5 layers. Each tunnel can be shaped as a CBR connection. It can be defined with end-to-end OAM flows and act as a regular VP connection in the public network.
Both users and network operators benefit from spacing bursty traffic. For the user, more traffic can pass through the link at no additional cost. For the operator, spacing enables better statistical efficiency while keeping the same backbone equipment and QoS. ACE-2002E offers a built-in mechanism that supports up to 983 spaced connections.
In addition, it supports hierarchical traffic scheduling, setting layers per VC, per VP or VP tunnel and per network interface. In these cases, the ACE-2002E schedules the traffic to meet pre-defined traffic parameters. This ensures fair bandwidth sharing between different connections while preserving the requirements of the individual connections.
In order to improve service resilience, ACE-2002E offers a protection mechanism on both the user and network sides, enabling standard SDH/SONET protection for the last physical segment connecting the service exchange to the customer premises.
ACE-2002E multiservice ATM access NTU combines up to 20 E1/T1 IMA/UNI links, or up to 24 E1/T1 CES links. Such high E1/T1 port density is especially suitable for cellular applications.
The ACE-2002E can be equipped with multiple LAN modules, providing up to six LAN ports. Each LAN module performs bridging and routing (RFC 1483/2684) with IP ToS and 802.1D priority support. In addition, multiple VLANs can be configured, optimizing the units for LAN and IP access applications.
The ACE-2002E is available in a 1.5U-high enclosure, suitable for mounting in a 19" rack.
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