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FlexStream AK525CU

Carrier Ethernet Central Office Unit

Positron Access Diagram AK525CU

The AK525CU Compact Central Office Unit enables the point-to-point transport of high-quality, high bandwidth Carrier Ethernet services over bonded copper pairs. The AK525CU provides 50 Mbps of symmetrical bandwidth capable of delivering carrier-grade services to 12 Kft/3.7 Km and beyond. The hardened unit is capable of providing line powering to an AK525RU Compact Remote Unit over the same pairs of copper that carry the data.

AK525 Compact Central Office Unit

The AK525CU works in conjunction with the AK525RU Carrier Ethernet Compact Remote Unit. Environmentally hardened for both inside and outside plant deployment scenario, the compact CO unit facilitates deployment in Central Office locations where space is at a premium. Its compact size enables service providers to overcome the common challenges with respect to space availability, while it’s robustness make it possible to deploy in existing outside plant cabinets with minimal modifications.

Compliant with Industry Standards

The AK525CU is a standards-based multi-pair DMT product that provides superior performance and reliability in comparison to SHDSL multi-pair copper products on the market. Along with meeting copper loop standards such as ANSI T1.417 which enables the AK525CU Ethernet services to co-exist with other services in a binder, it is compliant with IEEE 802.1 and 802.3 LAN standards and Metro Ethernet Forum MEF9/MEF14.

Metro Ethernet Services

The AK525CU delivers Ethernet services such as Ethernet Private Lines (EPL and EVPL), Ethernet Private LAN services (EP-LAN and EVP-LAN) and Quality of Service including bandwidth profiling in compliance with the Metro Ethernet Forum CE 1.0 (MEF9 and MEF14) specifications.


Utilizing Positron’s breakthrough multi-channel signal processing DMT + MIMO techniques embodied in both the hardware and software, the AK525CU can transport more bandwidth over longer distances on fewer pairs than SHDSL or T1 IMA copper bonding technologies.

10X More Bandwidth and Expanded Reach

The AK525CU can transmit ten times more bandwidth than T1 IMA and up to four times more high-quality bandwidth than SHDSL. This huge improvement over other copper bonded technologies is achieved by overcoming traditional copper transmission interferences such as self and alien cross-talk as well as noise. In doing so, the AK525RU enables service providers to offer higher-bandwidth services to up to four times more customers over longer distances without requiring expensive repeaters.

Multi-Level of Reliability

The AK525CU is designed to dynamically compensate for individual copper pair failures. If a copper pair fails, the AK525CU proactively and automatically adjusts the other copper pair margins to compensate for the loss. This feature allows any pair to protect all the pairs in a bonded group. The result is reliability that matches fiber Service Level Agreements (SLAs).

Powering Options

The Ak525CU has the unique capability to be remotely line powered by the AK525RU or AK500S with AK525LCP(A) modules over the same bonded copper pairs that are carrying data. There is no performance impact on the data when the AK525RU is line powered vs local powered.

Management Versatility

The AK525CU can be securely managed by Positron’s Element Management System (AKEMS), AktinoView (GUI software), a Command Line Interface (CLI) and SNMP. The AK525CU interoperates with industry standard Network Management Systems providing comprehensive performance monitoring for both the transport physical layer and Ethernet.